(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "North American geologic formation names : bibliography, synonymy and distribution,"

Google 



This is a digital copy of a book that was preserved for generations on library shelves before it was carefully scanned by Google as part of a project 

to make the world's books discoverable online. 

It has survived long enough for the copyright to expire and the book to enter the public domain. A public domain book is one that was never subject 

to copyright or whose legal copyright term has expired. Whether a book is in the public domain may vary country to country. Public domain books 

are our gateways to the past, representing a wealth of history, culture and knowledge that's often difficult to discover. 

Marks, notations and other maiginalia present in the original volume will appear in this file - a reminder of this book's long journey from the 

publisher to a library and finally to you. 

Usage guidelines 

Google is proud to partner with libraries to digitize public domain materials and make them widely accessible. Public domain books belong to the 
public and we are merely their custodians. Nevertheless, this work is expensive, so in order to keep providing tliis resource, we liave taken steps to 
prevent abuse by commercial parties, including placing technical restrictions on automated querying. 
We also ask that you: 

+ Make non-commercial use of the files We designed Google Book Search for use by individuals, and we request that you use these files for 
personal, non-commercial purposes. 

+ Refrain fivm automated querying Do not send automated queries of any sort to Google's system: If you are conducting research on machine 
translation, optical character recognition or other areas where access to a large amount of text is helpful, please contact us. We encourage the 
use of public domain materials for these purposes and may be able to help. 

+ Maintain attributionTht GoogXt "watermark" you see on each file is essential for in forming people about this project and helping them find 
additional materials through Google Book Search. Please do not remove it. 

+ Keep it legal Whatever your use, remember that you are responsible for ensuring that what you are doing is legal. Do not assume that just 
because we believe a book is in the public domain for users in the United States, that the work is also in the public domain for users in other 
countries. Whether a book is still in copyright varies from country to country, and we can't offer guidance on whether any specific use of 
any specific book is allowed. Please do not assume that a book's appearance in Google Book Search means it can be used in any manner 
anywhere in the world. Copyright infringement liabili^ can be quite severe. 

About Google Book Search 

Google's mission is to organize the world's information and to make it universally accessible and useful. Google Book Search helps readers 
discover the world's books while helping authors and publishers reach new audiences. You can search through the full text of this book on the web 

at |http: //books .google .com/I 




/ 



\ 







1 



^ 

3 



'Si 

r 

■"r 



i 



/ 




r.'^- 



y 



\ ■ :rt- 



*. • 




r 












» 



\ 



^1. 



\ 



I am 



UNITED STATES GEOLOGICAL SURVEY 
CAABLES B. WALCOTT, DIRKCTOR 



NORTH AMERICAN 



GEOLOGIC FORMATION NAMES 



BIBLIOGRAPHY, SYNONYMY 
AND DISTRIBUTION 



FRED BOTJG-HTON AV^EEKS 



WASHIN(3TON 

GOVERNMENT PRINTING OFFICE 

1902 



179738 



CONTENTS. 



Page. 

Letter of transmittal 7 

Introduction 9 

List of publications examined 12 

Synonymic table of period names used by authors and those used by the United 

States Geological Survey ..l 21 

List of geologic formation names, arranged by geographic provinces under the 

geologic periods to which they have been assigned 23 

Alphabetical list of sedimentary formation names, with references to descrip- 
tions, synonymy, and correlations •■ 41 

Alphabetical list of geographic names applied to igneous masses 428 

Index list of formation names 436 



/ 



LETTER OF TRANSMITTAL. 



Department of the Interior, 

United States Geological Survey, 

Washington, D. (?., Novembet' 27, 1901. 

Sir: I have the honor to transmit herewith a manuscript entitled 
North American Geologic Formation Names: Bibliography, Syn- 
onymy, and Distribution, and to request that it be published as a bul- 
letin of the Survey. 

Very respectfully, 

F. B. Weeks. 
Hon. Charles D. Walcott, 

Director United States Geological Survey, 

7 



NORTH AMERICAN GEOLOGIC FORMATION NAMES: BIBLIOG 
RAPHY, SYNONYMY, AND DISTRIBUTION. 



Bv F. B. Weeks. 



INTRODUCTION. 

This publication contains: 

(1) A list of all North American sedimentary formation names, 
arranged alphabetically by geographic provinces under each of the 
larger geologic subdivisions to which they have been assigned, in 
general, by various authors. 

(2) A list of the tiames used to designate a particular stratum or 
aggregate of sedimentary strata within the area of North America. 
It is arranged alphabetically, and the references to each name are placed 
in chronological order. Each name appears in this list as it is used in 
the reference cited. The references refer only to the more important 
descriptions of formations or discussions of correlation, synonymy, or 
nomenclature. The geologic time-division to which a formation 
belongs, and the State, Territory, or country in which it occurs, form 
a part of each entry. 

(3) A list of the geographic names that have been applied to masses 
of igneous rocks occurring in North America. Only those names that 
indicate that the rocks are of igneous origin have been included in this 
list. All names of metamorphic or other rocks of uncertain origin 
are included in the list of sedimentary formation names. 

(4) An index list of formation names. 

At the inception of this work it was seen that it would be necessary 
to read carefully every article or book on geology that had been pub- 
lished in order to be certain that every name that had been used to 
designate particular strata should be included in this catalogue. It 
was evident that the necessity for an early completion of the work and 
the limited time that could be devoted to it rendered it impossible to 
adopt such a plan. Furthermore, it is well known that during the 
early years of geologic literature names were employed so loosely that 
in very many cases it is impossible to determine whether it was 
intended to use the name merely in a descriptive sense or as a dis- 
tinctive formation name. It may happen, therefore, that names are 

9 



10 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BULL.ldl. 

included in this list which were not intended to be proposed as forma- 
tion names, or that the first mention of a name subsequently used as a 
distinctive formation name has been omitted. 

This work not only presents a list of formation names, and their 
synonymy and correlations as given by authors, but also serves as a 
bibliography of the literature describing each formation. Mere men- 
tions of occurrence were not entered, but it was intended to include 
descriptions of a formation which defined it either wholly or in part. 
It is probably true that the discrimination as to what is a sufficient 
description to entitle the reference to be included in this catalogue has 
not been of such a uniform character as it would have been if the prep- 
aration of the catalogue had been wholly the work of one person; but 
it is not considered less valuable on this account, since all the reall}" 
important descriptions are believed to have been included. 

No attempt has been made to indicate the synonymy or taxonomic 
value of any formation except as it was given by the author of the 
reference cited. It is intended to refer the investigator to the litera- 
ture of any North American geologic formation name, and he must 
exercise his own judgment as to its value and standing as a formation 
name. 

The work of preparing this bulletin has been in progress for nearly 
three years. It has been interrupted from time to time by other office 
and field work of the author. * During the winter of 1899-1900 it 
became evident that this work must be completed at once for the use 
of members of the United States Geological Survey in assigning names 
to the formations which were being delineated on the folios forming 
the Geologic Atlas of the United States. The Director of the Survey 
requested the following geologists to assist in completing the work: 
Messrs. M. R. Campbell, N. H. Darton, J. S. Diller, G. H. Girty, 
C. W. Hayes, F. H. Knowlton, F. L. Ransome, G. O. Smith, A. C. 
Spencer, T. W. Stanton, J. A. Taff, T. W. Vaughan,and David White. 
The literature that then remained to be examined was apportioned 
among these gentlemen, and since that time the material has been 
brought down to January 1, 1901, by the author. The methods of 
preparing this material, previously adopted, were followed with as 
much uniformity as was possible, and the author, as well as geologists 
in general, is greatly indebted to these gentlemen who assisted in 
bringing the work to an early completion. 

In the discrimination of what constitutes a sufficient description of 
a formation and the determination of the problems of nomenclature, 
the following suggestions are offered. These represent, in brief, the 
conclusions of the author as the result of his studies of the geologic 
litemture of North America. 

A formation which is associated with other strata at the particular 
locality from which it takes its name should be defined, either by its 



WEEKS.] INTRODUCTION. 1 1 

lithologic or its f aunal characters, in such a manner that the reader, or 
the observer in the field, can differentiate it from the other strata with 
which it occurs. Where a name is given to a series of strata of varied 
lithologic character and of wide distribution, the general characters 
of the lithologic variations and the stratigraphic relations should be 
so given as to indicate, approximately, what are its relations to other 
formations of the same or related provinces. 

In determining the names to be applied to formations the laws of 
priority and prescription (general usage) should be observed. The 
name first given to a definite formation or series of strata should hold, 
unless this name is superseded in literature by another which has come 
into general use. In the latter case the first name should be dropped 
for this formation; and, where there can be no question as to the gen- 
eral usage of the subsequent name, the first name might be used again 
for a different formation without causing serious trouble. Such reuse 
would certainly be very advantageous in regiolis where there are few 
geographic names. 

As an illustration, the name Berkshire limestone was first applied to 
certain limestones in western Massachusetts. Subsequently the name 
Stockbridge limestone was employed to designate this formation and 
has since come into general usage for this subdivision of the Cambrian 
in that region. The name Berkshire limestone has therefore become 
obsolete, and the name might be used to designate some other forma- 
tion without creating confusion. 

The duplication of formation names has become a serious matter, as 
will be seen from an examination of this list. It seems very desirable 
that in the future there should be no further duplication; new names 
should replace those which can not hold their present varied definitions; 
thus in time all the present discrepancies in the nomenclature of forma- 
tions would disappear from geologic literature. 

It is the intention of the writer to continue this list in the yearly 
publication, Bibliogriaphy and Index of North American Geology, etc., 
under the subheading, ''Geologic formations described." 



LIST OF PUBLICATIONS EXAMINED. 

OFFICIAL AND SERIAL PUBLICATIONS. 

Alabama Geological Survey: Tuomey, First Biennial Report, 1849. 

Tuomey, Second Biennial Report, 1855. 

Smith (E. A.), Reports of Progress, 1874, 1875, 1876, 1877-78, 1879-80. 

Bulletins, Nos, 1-6. 

Report on Coosa Coal Field, 1895. 

Report on Warrior Coal Field. 1886. 

Report on the Warrior Coal Basin, 1900. 

Report on Cahaba Coal Field, 1890. 

Report on Coal Measures of thei Plateau Region, 1891. 

Report on Geological Structure of Murphreea Valley, 1893. 

Report on Geology of the Coastal Plain of Alabama, 1894. 

Report on Valley Regions of Alabama, Parts I-II. 

Alabama Industrial and Scientific Society: Proceedings, Vols. I-IX. 
Albany Institute: Proceedings, Vols. I-III, Parts I-II. 

Transactions, Vols. I-X. 

American Academy of Arts and Science: Proceedings, Vols. I-X XX V. 

Memoirs, Vols. I-X II. 

American Association for the Advancement of Science: Proceedings, Vols. I-XLVIII. 

American Geologist, Vols. I-X XIV. 

American Institute of Mining Engineers: Transactions, Vols. I-XXIX. 

American Journal of Agriculture and Science, Vols. I-VII, 1845-1848. 

American Journal of Science: First, second, third, and fourth series, Vols. I-VII. 

American Museum of Natural Historv: Bulletin, Vols. I-X II. 

Annual Reports, 1-31. 

Memoirs, Vol. I, Parts, I-II. 

American Naturalist, Vols. I-XXXIII, 1899. 
American Paleontology: Bulletins, Nos. 1-12. 
American Philosophical Society: Proceedings, Vols. I-XXXIX, Nos. 160-16,3. 

Transactions, Vols. I-X IX. 

Arkansas Geological Survey: Report for 1888, Vols. I-IV; Report for 1889, Vol. II; 

Report for 1890, Vols. I-IV; Report for 1891, Vols. I-II; Report for 1892, Vols. 

I-II. 

Owen (D. D. ). Geological Reconnoissance of Arkansas. First Rejx^rt, 1858. 

(Geological Reconnoissance of Arkansas. Second ReiK)rt, 1860. 

Boston Journal of Natural Historv, Vols. I-VII. 1837-186;^. 

Boston Sotiety of Natural Histor>': Proceeiiings, Vols. I-XXIX, Nos. 1-14, 1900. 

Journal, Vols. I-VII. 

Memoirs, Vols. I-V, Nos. 1-5. 1866-1899. 

Botanical Gazette: Vols. I-XXX. 

Brook ville S^nietv of Natural Historv: Bulletins, Nos. 1-2. 

Buffalo Sx'iety of Natural History: Bulletin, vols. 1-6, No. 1. 

12 



WEBKS.] PUBLICATIONS EXAMINED. 13 

California Academy of Science: Proceedings, first series, Vols. I- VII; second series. 
Vols. I-VI; third series, Vol. I, Nos. 1-9. 

Bulletin, Vol. II, Nos. 6-8. 

Occasional Papers, Vols. I-VI. 

Memoirs, Vols. I-II. 

California Geological Survey: Whitney, Geology, Vol. I; Paleontology, Vols. I-II. 

Whitney Guide Book, Yosemite Valley. 

Trask (1850-65), Reports Nos. 1-4. 

California State Mining Bureau: Annual Reports, Nos. 1-13. 

Bulletins, Nos. 1-19. 

California, University of. Department of Geology: Bulletin, Vols. I-II, Nos. 1-7. 

Canada Geological Survey: Reports of Progress, 1843-44, 1844-45, 1845-46, 1846-47, 
1847-48, 1848-49, 1849-50, 1850-51, 1851-52, 1852-53, 1843-1863, 1863-1866, 1866- 
1869, 1870-71, 1871-72, 1872-73, 1873-74, 1874-75, 1875-76, 1876-77, 1877-78, 
1878-79; 1879-80, 1880-81-82, 1882-83-84; new series. Vols. I-X. 

Paleozoic Fossils, Vols. I-III. 

Mesozoic Fossils, Vol. I, parts 1-3. 

Contributions to Canadian Paleontology, vols. 1-4, Part I. 

Contributions to the Micro-Paleontology of the Cambro-Silurian rocks of 

Canada, Parts I-IV. 

Canada Royal Society: Proceedings and Transactions, Vols. I-XII; new series, 
Vols. I-V. 

Canadian Institute: Journal, Vols. I-XV; new series. Vols. I-VII. 

Transactions, Vols. I-VI. 

Canadian Naturalist, Vols. I- VIII; new series. Vols. I-X. 

Canadian Record of Science, Vols. II- VIII; Nos. 1-4. 

Central Ohio Scientific Association: Proceedings, Vol. I, Part I, 1^78. 

Chicago Academy of Science: Transactions, Vol. I. 

Proceedings, Vol. I. 

Bulletin, Vols. I-II. 

Geological and Natural History Survey; Bulletin: Vols. I-II. 

Cincinnati Quarterly Journal of Science, Vols. I-II. 

Cincinnati Society of Natural History: Journal, Vols. I-XIX. 

Proceedings, No. 1, 1876. 

Cleveland Academy of Science: Proceedings, 1845-1859, 1874. 

Colorado Science Society: Proceedings, Vols. I-V. 

Colorado College Studies: Vols. IV-VIII. 

Connecticut Geological Survey: Shephard (Charles N. ), Report, 1837. 

Percival (James G.), Report on the Geology of the State of Connecticut, 1842. 

Mather, New London and Windham counties. 

Connecticut Academy of Arts and Sciences: Transactions, Vols. I-X, Part I. 

Davenport Academy of Science: Proceedings, Vols. I-VI. 

Delaware Greological Survey: Booth (J. C. ), Memoir of the Geological Survey, 1839. 

Denison University, Scientific Laboratories: Bulletin, Vols. I-X I, Nos. 1-9. 

Des Moines Academy of Science: Bulletin, Vol. I, No. .1; 

Elliott Society of Natural History: Proceedings, Vol. I, 1859. 

Essex Institute: Proceedings, Vols. l-III, VI. 

Bulletins, Nos. 1-30. 

Geological Society of America: Bulletins, Vols. I-XI. 

Georgia Greological Survey: Little (George), Report of Progress, 1874, 1875. 

Spencer (J. W.), First Report of Progress, 1891. 

The Paleozoic Group, 1893. 

Bulletins, Nos. 1-3A, 4A, 5A, 6A, 7. 

Hamilton Association: Journal and Proceedings, Vols. I-II and VII-XVI. 



14 NOBTH AMEBIOAN GEOLOGIC FORMATION NAMES. [»ull.191. 

Harvard College, Museum of Comparative Zoology: Bulletin, Vols. I-XXX V, Nos. 1-6. 

Memoirs, Vols. I-XXIII. 

Illinois Geological Survey: Norw'ood (J. G.), Report of Progress <»f the State (geo- 
logical Survey, 1853. 

Abstract of a Report on Illinois ('oals, 1857. Vols. I-VIII; Economic 

Geology, Vols. I-III. 

Illinois Natural History Society: Transactions, Series I, Vol. I, 1861. 

Illinois State Laboratory of Natural History: Bulletin, Vols. I-V, articles 1-10. 

Illinois State Museum of Natural History: Bulletin, Nos. 1-12. 

Indiana Academy of Science: Proceedings, 1885-99. 

Indiana Department of Statistics: Reports, 1879-1890. 

Indiana Department of Geology and Natural Resources: Annual Reports, 1-24. 

International Congress of Geologists, fifth session: Compte Rendu, 1893. 

Iowa Academy of Science: Proceedings, Vols. I- VI. 

Iowa Geological Survey, Vols. I-X. 

White (C. A.), First and Second Annual Reports, 1867, 1868. 

Report on the Geological Survey of the State of Iowa to the Thirteenth 

General Assembly, Vols. I, II, 1870. 

Hall (James) and Whitney (J. D. ), Report on the Geological Survey of the 

State of Iowa, embracing the results of investigations made during portions of 
the years 1855, 1856, and 1857. Albany, 1858. 
Hall (J.), Supplement to Vol. I, Part II, 1^59. 



Iowa State University, Laboratory of Natural History : Bulletin, Vols. I-V, No. 1, 

1899. 
Johns Hopkins University: Circulars, Nos. 1-146 (except 123, 137, 143). 
Journal of Geology, Vols. I-VIII. 

Kansas Academy of Science: Transactions, Vols. I-X VI. 
Kansas City Review, Vols. I-VIII. 
Kansas Geological Survey: Swallow (G. C), Preliminary Report of the Geological 

Survey of Kansas, 1866. 

Mudge (B. F. ), First Annual Report on Geology of Kansas, 1866. 

Swallow (G. C. ) and Hawn (F. ), Report on the Geological Survey of Miami 

County, Kans., 1865. 
Kansas University Geological Survey: Reports, Vol. I-V. 
Kansas University Quarterly, Vols. I-V"III. 
Kentucky Geological Survey, Vols. I-IV, by D. D. Owen. 

Bulletin No. 1. 

Memoirs, Vol. I, Parts I-IV; new series, Vols. I-V. 

Crandall (A. R. ), Report on Geology of Whitley County. 

Sullivan (G. M. ), Report on Geology of Jackson and Rockcastle Counties. 

Linney ( W. M.), Report on Geology of Clarke and Montgomery Counties. 

Report on Geology of Mercer County. 

Report on Geology of Lincoln County. 

Report or Geology of Henry, Shelby, and Oldham Counties. 

Report Oi. ieology of Mason County. 

Report on Geology of Garrard County. 

Report on Geology of Spencer and Nelson Counties. 

Report on Geology of Bath and Fleming Counties. 

Norwood (C. J.), Report on the Geology of the Region Adjacent to the Louis- 



ville, Paducah and Southwestern Railroad. 

— Knott (W. T.), Report on the Geology of Marion County. 

— Loughridge (R. H.), Report on Geology of Clinton County. 

Report on the Geological and Economical Features of the Jackson 

Purchase Region. 



WEEKS] PUBLICATIONS EXAMINED. 15 

Kentucky Geological Survey: Mather (W. W.), Report on a Geological Reconnois- 
sance of Kentucky in 1838. 

Orton (Edward), Report on the Occurrence of Petroleum, Natural Gas, and 

Asphalt Rocks in Western Kentucky. 

Leland Stanford Junior University: Geology and Paleontology, No. 1. 

Louisiana State Geological Survey: Part V, 1889. 

State University Reports, 1869, 1870, 1871; Preliminary Survey by Agricul- 
tural Station. 

Hilgard (E. W.), Preliminary Report of a Geological Reconnoissance of 

Louisiana. New Orleans, 1869. 

Supplementary and Final Report of a Geological Reconnoissance of the 

State of Louisiana. New Orleans, 1873. 

Hopkins (F. V. ), Second Annual Report of the Geological Survey of Louisi- 
ana, in Annual Report of Supervisors of the State University for 1870-71. 

Third Annual Report of Geological Survey of Louisiana, in Annual 



Report of Supervisors of the State University for 1871. 
Maine Geological Survey: Jackson (Chas. J.), First, Second, and Thini Annual 

Reports. 
Hitchcock (C. H.), Preliminary Report on Natural History and Geology of 

Maine, Vols. I-II. 
Maryland Academy of Science: Transactions, Vol. I, 1888-1892. 
Maryland Geological Survey: Ducatel (J. T.), Annual Reports of the Geologist of 

Maryland, 1836-1840. 

Tyson (Philip T.), State Chemist, First Report, 1860. 

State Chemist, First Report, 1862. 

Higgins (James), Annual Reports, 1-6. 

Maryland; Its Resources, Industries and Institutions, 1893. Vols. I-III 



(Clark), Allegany County, 1900. 
Massachusetts Geological Survey: Final Report by E. Hitchcock, 1841. 

Economic Geology, 1832 and 1838. 

Report on Geologic Map, by W. O. Crosby. 

Michigan Geological Survey: Annual Reports of the State Geologist, D. Houghton, 

1837-1843, 1-7. 

Winchell (A.), First Biennial Report of Progress, 1861. 

Report of Progress for 1870. 



— Geological Survey Reports, Vols. I-VII, Part I. 

— Report of State Board of Geological Survey for 1891-92, published 1893. 

— Commissioner of Mineral Statistics, Annual Reports, 1877-1891, 1895-1897. 

— Reports of State Geologist (D. Houghton) relative to State Salt Springs, 1839, 
1840, 1843. 

— Winchell (A.), 1866, The Grand Traverse Region. 

— Morley (F.), 1882, second edition, Michigan and its Resources. 

— Lawton (C. D.), 1886, Michigan Mineral Resources. 
Foster and Whitney, Report on the Geology and Topography of a Portion 



of Lake Superior Land District, Parts I-II. 
Minnesota Academy of Science: Bulletin, Vols. I-III. 
Minnesota Geological and Natural History Survey: Annual Reports, 1-24. 

Final Reports, Vols. I-IV. 

Winchell ( A.) , Report of a Geological Survey of the Vicinity of Belle Plaine, 

Minn. St. Paul, 1872. 

Reports of State Geologist, Henry H. Fames, 1865, 1866. 

Eames (Henry H.), Geological Reconnoissance of Northern, Middle, and 



Other Counties. St. Paul, 1867. 
Mississippi State Geological Survey: Waites (B. L. C), Report on the Agriculture 
and Geology of Mississippi, 1884 



16 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Mississippi State Geological Survey: Harper (L. ), Preliminary Report on the Geology 

and Agriculture of the State of Mississippi, 1867. 
Hilgard (E. W.), Reports on the Geological and Agricultural Survey of the 

State of Mississippi, 1858, 1860. 
Missouri Geological Survey: First and Second Annual Reports, 1855, by Swallow; 

Third Report, 1857; Fourth Report, 1859; Fifth Report, 1861. 

Reports, 1855-1871, Broadhead, Meek, and Shumard. 

Report, 1873-74, Broadhead and Norwood. 

Report, 1871-72. 

Hager (A. D.), Annual Report of the State (Geologist, 1871. 

Swallow, Geological Report on Country along Line of Southwestern Branch 

of Pacific Railroad. 
Vols. I-Xll. 



National Geographic Magazine, Vols. I-XI. 

Nebraska Academy of Science: Publications, I-III. 

New Brunswick Natural History Society: Bulletin, Vols. I-III, 1897, Noe. 16-17. 

Newfoundland, Geological Survey of the Province of. Annual Reports, 1839-1842, 

by Abraham Gesner. 
New Hampshire Geological Survey: Hitchcock (C. H.), The Geology of New 

Hampshire, Vols. I-III. 

-^ First Annual Report on the Geology and Mineralogy of the State of 

New Hampshire, 1869. 

: Second Annual Report on the Geology and Mineralogy of the State of 

New Hampshire, 1871. 



Jackson (Chas. T. ), Final Report on the Geology and Mineralogy of the 

State of New Hampshire, 1844. 
Report for the year 1870 of the Geological Survey of the State of New 

Hampshire. 

Report for 1871. 

Report for 1872. 

New Jersey Geological Survey: Rogers (H. D. ), Annual Report, 1836. 

Cook (G. H. ), Report on Geology of Cape May County, 1856. 

Geology of New Jersey, 1868. 

Annual Reports for 1854, 1855, 1856, 1857, 1863, 1864, 1865, 1866, 1867, 1868. 

Final Report, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 

1880, 1881, 1882, 1883, 1884, 1885, 1886, 1887, 1888, 1889, 1890, 1891, 1892, 

1893, 1894, 1895, 1896, 1897, 1898, 1899. 

Report on Clay Deposits of New Jersey, 1878. 

Final Report by Henry D. Rogers, Philadelphia, 1840. 



New Orleans Academy of Sciences: Proceedings, Vol. I, No. 1, 1854; No. 2, 1888. 
Newport Natural History Society: Proceedings, Documents Nos. 1-7. 
New York Academy of Science: Annals, Vols. I-XII; Transactions, Vols. I-XVI. 
New York Geological Survey; Natural History of New York, Geology of New York, 

Part I, by W. W. Mather; Part II, by E. Emmons: Part III, by L. Vanuxem; 

Part IV, by J. Hall. 

Agriculture of New York, by K. Emmons, Vols. 1-V. 

Paleontology, Vols. I-VIII. 

Annual Reports on Geological Survey of New York 1-V, 1837-1841, Mather, 

Emmons, Vanuxem, and Hall. 

Annual Reports of State Geologists (Hall), 1-17. 



New York Lyceum of Natural History: Proceedings, Vols. 1-XI. 

New York State Museum: Annual Reports, 1-49; 50, Vol. I; 51, Vols. I-II. 

Bulletins, 1-39. 



I 



VEEKS] PUBLICATIONS EXAMINED. 17 

North Carolina Geological Survey: Olmstead (D.)» Report of the Geology of North 

Carolina, Part I, 1824; Part II, 1825. 
Kerr (W, C.)» Report of Progress of the Geological Survey of North Carolina, 

1865. 

Report for 1866-67. 

Report of the Geological Survey of North Carolina, Vol. 1, 1875. 

Appendix to Report of 1873. 

Bulletins, 1, 3-7, 9-11, 13. 

First Biennial Report State Geologist, 1893. 

Emmons, Report on his Geological Survey of North Carolina. Raleigh, 1852. 

Report on the Midland Counties of North Carolina. Raleigh, 1856. 

Nova Scotian Institute of Science: Proceedings and Transactions, Vols. I-X, Part I. 
Ohio Greological Survey, Vols. I- VII. 

Paleontology, Vols. I-II. 

Third Organization, Vol. I. 

Mather (W. W. ), First and Second Annual Reports of the Geological Survey 

of the State of Ohio, 1838. 
Report on State House Artesian Well at Columbus, Ohio, 1859. 



Newberry (J. S.), Reports of Progress, 1868, 1869, 1870, 1871. 

Report on State House Artesian Well at Columbus, Ohio. 

Geological Survey of Ohio, its Progress in 1869, published in 1870. 

Annual Reports of the State Inspector of Mines, 1-6, 9, 12-22. 

Orton, Preliminary Report on Petroleum and Inflammable Gas, 1866. 

Ohio Mining Journal. Vol. I, No. 4; Vol. II, Nos. 1-3; Vol. Ill, No. 1. 

Ottawa Naturalist, Vols. I-XIV. 

Pacific Railway Survey, Vols. I-XII. 

Pennsylvania Greological Society: Transactions, Vol. I, 1835. 

Pennsylvania Geological Survey: Annual Report, 1885; Annual Report, 1886; Parts 

I-IV, 1887. 
Reports AA, C, CC, CCC, C*, C*, C«, D, DD, D»; Parts I, II, E, F, F, F*, G, 

G«, G», G*, G5, G«, G', H, H«, H«, H*, H*, H«, H', I, P, P, I*, P, J, K, K^ K», 

K*, Q, Q«, Q», Q*, R, RS T, T», T», T*, V, V«. 

Rogers' Annual Reports, I- VI. 

Geology of Pennsylvania, Vols. I-II, 1858. 

Lesley's Final Reports, Vols. I-III. 



Pennsylvania State College: Annual Report for 1896, Appendix. 
Philadelphia Academy of Natural Sciences: Proceedings 1843-1900, Parts I-II. 

Journal, Vols. I-X. 

Portland Society of Natural History: Journal, Vol. I, No. 1, 1864. 

Proceedings, Vol. I, 1861-1869. 

Quebec Literary and Historical Society: Transactions, new series, Vols. I-XXII. 
Rhode Island: Report of Geological and Agricultural Survey, by Chas. T. Jackson, 

1840. 
Rochester Academy of Science: Proceedings, Vols. I, II, and III, brochure 1 and 2. 
St. Louis Academy of Science: Transactions, Vols. I-IX, Nos. 1-8; Vol. X, Nos. 1-8. 
San Antonio Scientific Society: Proceedings, Vol. I, Nos. 1-2. 
School of Mines Quarterly, Vols. I-II, IV-XX. 
Science, Vols. I-XXIII; new series. Vols. I-XII. 
Sedalia Natural History Society: Bulletin, 1885. 
Smithsonian Institution, Annual Reports, 1851-1896, 46 volumes. 

Miscellaneous Collections, Vols. I-XL. 

Contributions to Knowledge, Vols. I-XXXVI, XXXVIII, XL; 8 special 

publications. 

Bull. 191—02 2 



18 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullwl 

South Carolina Geoloj?ical Survey: Tuomey (M. ), Report on the Geology of South 

Carolina, 1848. 
Lieber (O. M.), Annual Reports on the Survey of South Carolina, 1866, 1858, 

1859, 1860. 
South Dakota Geological Survey: Bulletins, Nos. 1-4. 
Technology Quarterly, Vols! III-XIII. 
Tennessee Geological Survey: Troost (G.), Annual Reiwrta (Third to Ninth). 

Safford (J. M.), Geology of Tennessee, 1869. 

Geological Reconnoissance of Tennessee, First Report, 1856. 

Killebrew (J. B.) and Safford (J. M.), Resources of Tennessee, 1874. 

Safford (J. M.) and Killebrew (J. B. ), Elementary Geology oi Tennessee, 1876. 

Texas Academy of Sciences: Transactions, Vol. I, Nos. 1,2; Vol. II, No. 1; Vol. 111. 
Texas Geological Survey: Annual Reports, 1-4; Bulletins, Nos. 1-3. 

Dumble (E. T.), Report on the Brown Coal and Lignites of Texas. 

First Report of Progress, 1889. 

Shumard (B. F.), First Report of Progress of the Geological and Agricultural 

Survey of Texas, 1859. 
Buckley (S. B.), A Preliminary Report of the Geological Survey of Texai*, 



1866. 

First Annual Report of Geological Survey of Texas, 1874. 

Second Annual Report of the Geological Survey of Texas, 1876. 



Shumard (George G.), A Partial Report on the Geology of Western Texas. 

Austin, 1886. 
The Virginias, Vols. I-VI. 

Torrey Botanical Club: Bulletin, Vols. I-XXVI. 
United States and Mexican Boundary Survey: Vols. I-III. 
United States Census, Tenth, Vols. XI-XIII. 

United States Chief of Engineers: Reports, 1873, 1874, 1875, 1876, 1878, 1879. 
United States Exploring Expedition under Command of Captain Wilkes, Vol. X; 

Geology by J. G. Dana. Philadelphia, 1849. 
United States Geological Survey: Annual Reports, 1-20. 

Monographs, 1-31 ; 32, Part II ; 33-39. 

Bulletins, 1-172. 

Folios 1-59, 61-65. 

Hawley sheet. 

Baltimore Geologic sheet. 

United States Geographical and Geological Survey of the Rocky Mountains Region : 

Gilbert (G. K.), Geology of the Henry Mountains. 

Dutton (C. E.), Geology of the High Plateau of Utah. 

Newton and Jenney, Geology of the Black Hills of Dakota. 

Powell (J. W.), Report on the Lands of the Arid Region of the United 

States, with a more detailed Account of the Lands of Utah. 

Report on the Geology of the Eastern Portion of the Uinta Mountains and a 



Region of Country Adjacent Thereto. 
United States Geographical and Geological Survey of the Territories: Annual Reports, 

1-12. 

Bulletms, Vols. I-VI. 

Monographs, Vols. I-XIII. 

United States Geological Exploration of the Fortieth Parallel, Vols. I-III. 

United States Geographical and Geological Survey West of the One Hundredth 

Meridian, Vol. Ill; Supplement to Vol. Ill; Vol. IV. 
United States National Museum: Annual Reports, 1884-1897. 

Proceedings, Vols. I-XXI. 

Bulletins Nos. 1-49. 



WEEKS] PUBLICATIONS EXAMINED. 19 

United States Treasury Department: Owen (D. D.), Geological Reconnoissance of 

the Chippewa Land District, 1848. 
Vassar Brothers Institute: Transactions, Vols. I- VII. 
Vermont Geological Survey: Hitchcock (E.), Report on Geology of Vermont, 1861. 

Third and Fourth Annual Reports on the Geological Survey of Vermont. 

Adams (C. B.), First and Second Annual Reports on the Geological Survey 



of the State of Vermont, 1847, 1848. 

Report of State Geologist, H. A. Cutting, for 1874, 1875. 



Virginia Geologici^l Survey: Rogers (William B.) , Reports of Progress of the Geologi- 
cal Survey of Virginia, 1836-1841. 

Geology of the Virginias, edited by Jed. Hotchkiss. 

Wagner Free Institute of Science: Transactions, Vols. I- VI. 

Washburn College, Laboratory of Natural History: -Bulletin, Vols. I-IX. 

Washington Academy of Sciences: Proceedings, Vol. I. 

Washington Biological Society: Proceedings, Vols. I-XIII. 

Washington Geological Society: Four brochures. 

Washington Philosophical Society: Bulletin, Nos. 1-13. 

West Virginia Geological Survey: Third Annual Report of Board of Regents of West 
Virginia University for 1870, published 1871. Article by Stevenson. 

Vol. I, White. 

Wisconsin Academy of Sciences, Arts, and Letters, Vols. I-XII, Part I. 

Wisconsin Geological Survey: Vol. I, 1883. 

Daniels (Edward), First Annual Report of the Geological Survey of Wis- 
consin, 1854. 

Percival (J. G.), Annual Report of the Geological Survey of Wisconsin, 1855. 

Daniels (Edward), Annual Report of the Geological Survey of Wisconsin, 1857. 

Hall (James), First Annual Report of the Geological Survey of Wisconsin, 1859. 

Murrish (John), Report on Geological Survey of Lead Region, 1863. 

Chamberlin (T. C. ), Annual Reports of the Wisconsin Geological Survey, 1876, 



1877, 1878, 1879. 

— BuUetms, Vols. I-VI. 



Wyoming Historical and Geological Society: Proceedings and Collections, Vols. I-III. 

MISCELLANEOUS PUBLICATIONS. 

Campbell (J. L.) and Ruffner (W. H.). A Physical Survey Extending Across Ala- 
bama and Mississippi to the Mississippi River. New York, 1883. 

Chapman (E. J.) . A Popular and Practical Exposition of the Minerals and Geology 
of Canada. Toronto, 1864. 

Dawson (George M. ). Report on the Tertiary Lignite Formation in the Vicinity of 
the Forty-ninth Parallel. Montreal, 1874. 

Report on the Geology and Resources of the Region in the Vicinity of the 

Forty-ninth Parallel, from the Lake of the Woods to the Rocky Mountains. 
British North American Boundary Commission. Montreal, 1875. 

Foster (J. W.) and Whitney (J. D. ). Report on the Geology of the Lake Superior 
Land District. Part I, Executive Document No. 69, House of Representatives, 
Thirty-first Congress, first session, 1850. Part II, Executive Document No. 4, 
Senate special session, March, 1851. 

Hind (Henry Youle). A Preliminary Report on the Geology of New Brunswick, 
with a Special Report on the Distribution of the Quebec Group. Fredericton, 
New Brunswick, 1865. 

Jukea (J. B.). General Report on the Geological Survey of Newfoundland, 1843. 

Marcou (James). Geology of North America. Zurich, 1858. 

Murray (Alexander). Geological Survey of Newfoundland. London, 1881. 



LIST OF GEOLOGIC FORMATION NAMES, ARRANGED BY GEO- 
GRAPHIC PROVINCES UNDER THE GEOLOGIC PERIODS TO 
WHICH THEY HAVE BEEN ASSIGNED. 



Alaska. 

Cook Inlet. 

Ground Ice. 

Kanektok. 

Kowak. 

Kuskokwim. 

Pinnacle. 

St. Elias. 

Saskachewan. 

Togiak. 

Yukon. 

Appalachian region. 

Teay. 

Atlantic Coast region. 

Barnstable. 

Barrington. 

Bryn Mawr. 

Cape May. 

Columbia. 

Cornfield Harbor. 

Jamesburg. 

Middleboro. 

Mohegan. 

Mussel-bearing. 

Packer. 

Philadelphia. 

Queens River. 

Sankaty. 

Simmons Bluff. 

Terrace. 

Tisbury. 

Truro. 

Yellow. 

Canada. 
Gait. 

Leda. 

Kingston. 



PLEISTOCENE. 

Saugeen. 
Saxicava. 
Syrtensian. 
Toronto. 

Great Lakes region. 

Albertan. 

Algoma. 

Arkona. 

Artemisia. 

Calumet Beach. 

Gary. 

Grassmere. 

Mesabi. 

Van Wert. 

Wisconsin. 

Great Plains region. 

Antelope. 

Cache Vallev. 

Equus. 

Gentile Valley. 

Kansan. 

Lake Bonneville. 

Malade Valley. 

Marsh Creek. 

McPherson. 

Meade. 

Megalonyx. 

Salt Creek. 

Third Moraine. 

Wellington. 

Gulf Stales. 

Biloxi. 
Mobile. 
Port Hudson. 



Mississippi Valley. 

Aftonian. 

Altamont. 

Bluff. 

Bottom Prairie. 

Boulder. 

Buchanan. 

Cerro Gordo. 

Delta. 

Forest. 

Fourth Moraine. 

Gravel. 

Highland. 

lUinoian. 

lowan. 

Iroquois. 

Itasca. 

Loess. 

Marseilles. 

Orange Sand. 

Peorian. 

Sangamon. 

Shelbyville. 

Silveria. 

Tolleston. 

Valley. 

Valparaiso. 

Vermilion. 

Western Valley. 

Yarmouth. 

Pacific ( 'oast region. 

Admiralty. 

Coos. 

Douty. • 

Gale. 

Midland. 

Orting. 

23 



24 



' 



NORTH AMEHIOAN GEOLOGIC FORMATION NAMES. [bull.191. 



Osceola. 

Puyallup. 

San Pedro. 

Steilacoom. 

Superjacent. 

Tehachipa. 

Vashon. 

Yakutat. 

Rocky Mountain region. 

Hot Spring. 

Sheridan. 

Stanford. 



PLEisTXK'ENE — Continued. 

SovUhwestem region. 

Coast. 

Guertie. 

Leona. 

Prairie d*Ane. 

Seymour. 

White Prairie d'Ane. 

West Indies. 

Barbican. 
Bogne Island. 
Buff Bay. 



Champlain. 

Coastal. 

Falmouth. 

May Pen. 

Montego. 

Neudeckian. 

Ozarkian. 

Warren. 

Zapata. 



Alaska. 

Hayes River. 

Kenai. 

Nulato. 

Nushagak. 

Orca. 

Palisades. 

Pinnacle. 

Saskatchewan. 

Tanana. 

Tok. 

Twelvemile. 

Tyonek. 

Unga. 

Yakutat. 

Yentna. 

Appalachian region. 

Flatwoods. 

Hickman. 

Irvine. 

Atlantic Coast region. 

Alachua. 

Altamaha. 

Alum Bluff. 

Appomattox. 

Aquia Creek. 

Archer. 

Ashley. 

Aspalaga. 

Autocene. 

Beacon Hill. 

Branditown. 

Brandon. 



TERTIARY. 

Bryn Mawr. 

Caloosahatchie. 

Cape Cod. 

Carolinian. 

Chattahoochee. 

Chesapeake. 

Cooper River. 

Coralline. 

Croatan. 

Duplin. 

Eo-Lignitic. 

Floridian. 

Glassboro. 

Gray. 

Great Carolina. 

Hawthorne. 

Holocene. 

Jacksonboro. 

Lafayette. 

Lisbon. 

Manatee. 

Marl. 

Marlborough. 

Marylandinian. 

Mont Alto. 

Mount Holly. 

Nashaquitsa. 

Orangeburg. 

Pamunkey. 

Patuxent. 

Pensauken. 

Piscataway. 

Pulaski. 

San tee. 

Shark River. 



Shell Bluff. 

Squanjum. 

Tuscahoma. 

Vineyard. 

Virginian. 

Waccamaw. 

Weyquosque. 

Wilmmgton. 

Woodstock. 

Yellow;. 

Canada. 

Carmanah Point. 

Coldwater. 

Lawrencian. 

Leda. 

Roche Percee. 

Saxicava. 

Sooke. 

Tranquille. 

Central America. 
Brito. 

Great Basin region. 

Amyzon. 
Bishop Mt. 
Bitter Creek 
Bridger. 
Cache Lake. 
Esmerelda. 
P^stuary. 
Fort Bridger. 
Green River. 



WEEKS] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 25 



TERTIARY — continued. 



Humboldt. 


Jacksonian. 


Yegua. 


Idaho. 


Jacksonville. 


Zeuglodon. 


Manti. 
Para. 


Lagarto. 
Lignite. 


Hawaii. 


Pink Cliff. 


Lignitic. 


Pearl River. 


Plant. 


Lufkin. 


Mexico. 


Salt lAke. 


Marine. 


Tower. 


Matthews Landing. 


Baucari. 


Truckee. 


Middleton. 


Coatzacoalcos. 


Uinta. 


Midway. 


Trincheras. 


White. 

Great Lakes region. 


Midwayan. 
Miliolite. 
Moody's Branch. 


Mississippi Valley. 
Bloomfield. 


Vermilion. 


Mount Selman. 


Bluff. 


Great Plains region. 


Myrick. 


Geneva. 




Naheola. 


La Grange. 


Equus. 


Nanafalia. 


Mansfield. 


Kingsdown. 


Navasota. 


Orangesand. 


McPherson. 


Nummulite. 


Port Hudson. 


M^alonyx. 


Oak Grove. 


Porters Creek. 


Nebrasca. 


Oakville. 


Portland. 


Pearlette. 


Ocala. 


Quitman-Muerto. 


Protoceras. 


Ocheesee. 




White River. 


Orbitoides. 


Pacific Coast region 


Greenland. 


Orbitoitic. 


Arago. 


Atane 


Orbitolite. 


Asphalto. 


# * VtM* A V^ • 


Orthaulax. 


Astoria. 


Gulf States. 


Ostrea sellaeformis. 


Aturia. 


Arcadia. 


Palo Duro. 


Auriferous. 


Bashi. 


Pascagoula. 


Bituminous. 


Bells landing. 


Peace Creek. 


Carmelo. 


Black Bluff. 


Queen City. 


Carrizo Creek. 


Bnhrstone. 


Reynosa. 


Chehalis. 


Chickasaw. 


Sabine River. 


Chico. 


Chipola. 


Shiloh. 


Coaledo. 


Claiborne. 


Sopchophy. 


Contra Costa. 


Clayton. 


Sparta. 


Ellensburg. 


Coal Bluff. 


St. Stephens. 


Empire. 


Cocksfield Ferry. 


Sucarnochee. 


lone. 


Coral. 


Tallahatta. 


John Day. 


De Soto. 


Tampa. 


Johnson. 


Diablo-Davis. 


Timber Belt. 


Kettleman. 


Ecphora. 


Tule. 


Kittitas. 


Fayette. 


Uvalde. 


Little Vein. 


Fleming. 


Vicksburg. 


Merced. 


Frio. 


Vicksburgian. 


Miohippus. 


Grand Gulf. 


Waldo. 


Mojave. 


Greensand. 


Walnut. 


Monterey. 


Greggs Tianding. 


Webb Bluff. 


Mytilus. 


Hatchetigbee. 


Wills Point. 


Oakland. 


' Jackson. 


Woods Bluff. 


Ocoya Creek. 



26 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191, 



TERTIARY — continued. 



Paso Robles. 


Florissant. 


Bingen. 


Pescadero. 


Fort Ellis. 


Blanco. 


Puget. 


Fort Union. 


Blanco Canyon. 


San Diego. 


Galisteo. 


Camden. 


San Pablo. 


High Park. 


Cleveland County. 


Santa Clara. 


Huerfano. 


Cooks Mountain. 


Sespe. 


Intermediate. 


Fort Selden. 


Sirnilkanieen. 


Judith River. 


Hueco. 


Superjacent. 


Laramie. 


Lapara. 


Swauk. 


Loup Fork. 


Llano Estacado. 


Tassagara. 


Loup River. 


Marks Mills. 


Tejon. 


Monument Creek. 


Plateau. 


Ticholeptus. 


North Park. 


White Bluff. 


Torregon. 


Nussbaum. 




Tunnel Point. 


Oreodon. 


West Indies 


Tuscan. 


Payette. 


Antiguan. 


Tyre. 


Pinon. 


Bowdan. 


Roslyn. 


Pliohippus. 


Cambridge. 


Umpqua. 


Poison Canyon. 


Caroni. 


Wallala. 


Potosi rhyolite series. 


Catadupa. 


Wilbur. 


Procamelus. 


Chapelton. 


Wildcat. 


Puerco. 


Cobre. 




San Juan. 


(riiJillava 


Rocky Mountain region. 


San Miguel. 


V4 uAi m V Of. 

Limon. 


Alnwick. 


Santa Fe. 


Manchionell. 


Arapahoe. 


Smith River. 


Manzanilla. 


Bates Hole. 


Sphinx. 


Maruga, 


Bozeman. 


Sweetwater. 


Matanzas. 


Brontotheriura. 


Titanotherium. 


May Pen. 


Brown. 


Wahsatch. 


Moneague. 


Browns Park. 


Washakie. 


Moruga. 


Canyon. 


West Elk. 


Naparima. 


Canyon City. 


Wind River. 


Nariva. 


Coryphoden. 


Wyoming. 


Oceanic. 


Cripple Creek. 
Cuchara. 


Southwestern region. 


Parian. 
Pepino. 


Deep River. 


Arkadelphia. 


Porus. 


Denver. 


Basal. 

CRETACEOUS. 




Alaska. 


Lisbon. 


Ilazlet. 


Holikunk. 


Marietta. 


Island. 


PColmakof 




James River. 


MatJinuska. 


Atlantic CoaM region. 


Lincoln. 


Mission Creek. 


Albirupean. 


Magothy. 


Oklune. 


Amboy. 


Manasquan. 


Orca. 


Aquia Creek. 


Marl. 


Tordrillo. 


Baltimorean. 


Matawan. 


Appalachian region. 


Clay. 


Monmouth. 


Brownstown. 


Eutaw. 


Mount Vernon. 


P:agle. 


Fish House. 


Navesink. 



WEEKS] BY GEOLOGIC PERI0D8 AND GEOGRAPHIC PROVINCES. 27 



CRETACEOUS — (continued . 



Patapsco. 


Salt Wells, 


Prairie Bluff. 




Pedee. 


Sulphur. 


Ripley. 




Potomac. 


Tu-nunk. 


Tombigbee. 




Potters. 




Tuscaloosa. 




Rancocafl. 


Great Plains region 


Winfield. 


* 


Rappahannock. 


Arickaree. 


Mexiro, 




Raritan. 


Bad Tiand. 


Cantera. 




Redbank. 
Sand Hill. 


Barrett. 
Belvidere. 


Timpas. 
Todos Santos. 




Sassafras River. 


Benton. 






Severn. 


Beulah. 


Mississippi Valley. 




Sewell. 


Black Hill. 






Vincentown. 


Blue Cut. 


Fort Dodge. 




Woodbridge. 


Blue Hill. 


Glauconitic. 




Chnada. 


Champion. 
Cheyenne. 
Corral. 


Green sand. 
Inoceramus. 
Nishuabotany. 




Belly River. 


Downs. 


Rockville. 




Clearwater. 


Elk Creek. 


Rotten. 




Crosswicks. 


Fence-post. 


Woodbury. 




Dunvegan, 


Fort Hays. 


Pacific Coast region. 




Edmonton. 


Fort Pierre. 


•r •' 




Fort St. John. 


Fort Union. 


Chico. 




Grand Rapids. 


Fullington. 


Chico-Tejon. 




Jackass Mountain. 


Greenleaf. 


Fora'uiniferal. 




Koinooks. 


Hay Creek. 


Franciscan. 




KootAnie. 


Kiowa. 


Golden Gate. 




T*a, Biche. 


Kirbv. 


Horsetown. 




Loon River. 


Lanphier. 


Knoxville. 




Nanaimo. 


Medicine. 


Mesa. 




Nicollet. 


Mentor. 


Myrtle. 




Odanah. 


Neocomian. 


Puget. 




Paskapoo. 


Oak Creek. 


Radioteirian. 




Pelican. 


Osborne. 


San Francisco. 




Porcupine. 


Platte. 


Shasta. 




Queen Charlotte. 


Reeder. 


Shasta-Chico. 




Quesnel River. 


Smoky Hill. 


Similkameen. 




St. Marys. 


Stokes. 


Suisure. 




Smoky River. 


Trego. 


Superjacent. 




Tar. 


Victoria. 


Tejon. 




Wapiti. 




Whitsett. 




Willow Creek. 


Greenland, 


Winthrop. 






Atane. 


Rocky Mountain region. 




Great Basin regwn. 


Kome. 
Patoot. 


Animas River. 




Bear River. 
Black Butte. 


Gulf Stales, 


Apishapa. 
Arapahoe. 




Bluegate. 


Arenaceous group. 


Bull Mountain. 




Golden Wall. 


Arietna. 


Canyon City. 




Henry's Fork. 


Bayou Chicot. 


Carlile. 




Hogback. 


Calcareous. 


Cascade. 




Masuk. 


Coffee sand. 


Ceratops. 





28 



NOBTH AMERICAN GEOLOGIC FOBMATION NAMES. [bull. 191. 



Colorado. 

Cretaceous Nos. 1, 2, 3. 

Dakota. 

Estuary. 

Fort Benton. 

Fox Hills. 

Graneros. 

Great Falls. 

Green Mountain. 

Greenhorn. 

Halymenites. 

Laramie. 

Livingston. 

Mancos. 

Mesa Verde. 

Middle Park. 

Montana. 

Niobrara. 

Ohio Creek. 

Pictured Cliff. 

Pierre. 

Pifion Mesa. 

Point of Rocks. 

Pteranodon. 

Puerco. 

Ruby. 

Saliferous. 

San Miguel. 

Trinidad. 

Yellowstone. 

Southwestern region. 

Anacacho. 

Anoma. 

Austin. 

Big Decipher. 

Black Prairie. 

Bosque. 

Buda. 



CRETACEOUS — contluued . 

Caprina. 

Caprotina. 

Chalky. 

Choctaw. 

Clark County. 

Comanche. 

Comanche Peak. 

Comet Creek. 

Coquina. 

Dallas. 

Danville. 

Delrio. 

Denison. 

Dexter. 

Dinosaur. 

Duck Creek. 

Eagle Ford. 

Eagle Pass. 

Mwards. 

Escondido. 

Etholen. 

Exogyra arietina. 

Exog}rra costata. 

Exogyra ponderosa. 

Flag. 

Fort Worth. 

Fredericksburg. 

Georgetown. 

Gillespie. 

Glen Rose. 

Goodland. 

Goodnight. 

Grand Prairie. 

Grayson. 

Gulf. 

Kiamitia. 

Lower Cross Timbers. 

Main Street. 

Malone. 

Marl Brook Columbus. 



Navarro. 

Nerin^ea. 

North Denison. 

Paluxy. 

Paw Paw. 

Pinto. 

Ponderosa. 

Preston. 

PuUiam. 

Quitman. 

Red River. 

Requienia. 

Richland-Gordon . 

Rocky Comfort. 

Shoal Creek. 

Taylor. 

Texana. 

Texanan. 

Timber Creek. 

Travis Peak. 

Trinity. 

Tucumcari. 

Upson. 

Val Verde. 

Vicarya. 

Vola. 

Walnut. 

Washita. 

Webberville. 

Yucca. 

West Indies, 

Ballard. 

Blue Mountain. 

Frankenfield. 

Jerusalem. 

Logic Green. 

Minbo. 

Yallahs. 



Alaska 

Naknek. 
Skwentna. 
Terra Cotta. 

Atlantic Coast region 

Albirupian. 

Arundel. 

Baltimoreau. 



JURATRIAS. 

Boscabel. 

Brunswick. 

Chesterfield. 

Chicopee. 

Connecticut River. 

Granby. 

Gwynedd. 

Lansdale. 

Lookatong. 



Long Meadow 

Mount Toby. 

New Red. 

Newark. 

Otterdale. 

Patuxent. 

Perkasic. 

Pleurocoelus. 

Potomac. 



WEEKS.! BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 29 

JURATRIA8 — continued . 



PottBtown. 


Pacific Coast region. 


Como. 


Red Hand rock. 




Dolores. 


Seneca. 


Auriferous slate. 


Ellis. 


Stockton. 


Bicknell. 


Gunnison. 


Sugarloaf. 


Cedar. 


Ta Plata. 


Trap Tuff. 


Foreman. 


McElmo. 


Tuckahoe. 


Franciscan. 


Meekoceras. 


Vinita. 


Golden Gate. 


Morrison. 




Hardgrave. 


Pentacrinus. 


Canada. 


Hinchman. 


Red. 


Nicola. 


Hosselkus. 


Shirley. 


Vancouver. 


Mariposa. 


Sundance. 




Milton. 


Teton. 


Great Basin region. 


Mineral King. 


Unkpaps. 




Monte de Oro. 


Wingate. 

Wyoming. 

Zuni. 


Flaming Goige. 
Gray CHff. 
Koipato. 


Mormon. 

Pitt. 

Radiolarian. 


Shinarump. 


Sailor Canyon. 


SotUhwestem 


Star Peak. 


Santa Anna. 


' 


Vermilion. 

Mexico. 


Swearinger. 

Thompson. 

Trail. 


Bend. 
Dockum. 
Lista Blanca. 


Barranca. 




Malone. 




Rocky Mountain region. 


Norristown. 


Mississippi VaUey. 


Atlantosaurus. 




Merom. 


Baptanodon. 

PERMIAN. 




Appalachian region. 


Cottonwood. 


Kiger. 


Dunkard Creek. 


Curzon. 


Kingfisher. 




Day Creek. 


Manhattan. 


Great Plains region. 


Dog Creek. 


Marietta. 


Abilene. 


Double Mountain. 


Marion. 


Alma. 


Dry Bone. 


Medicine Lodge. 


Amphitheatre. 


Flint. 


Neosho. 


Big Basin. 


Flint Hill. 


Red Bluff. 


Big Blue. 


Flower-pot. 


Salt Fork. 


Browntown. 


Forest City. 


Salt Plain. 


Cave Creek. 


Fort Riley. 


Shimer. 


Cedar Hills. 


Geronimo. 


Sumner. 


Chapman. 


Greuda. 


Taloga. 


Chase. 


Glass Mountain. 


Wellington. 


Cimarron. 


. Harpers. 


Wichita. 


Clear Fork. 


Jenkins. 

CARBONIFEROUS. 


Wreford. 


Alaska. 


Appala/ihian region. 


Anthracite. 


Cape Beaufort. 


Alleghany River. 


Bakerstown. 


Tachatna. 


Alton. 


Bangor. 


Tahkandit. 


Ames. 


Barren. 


Welleeley. 


Anderson. 


Barton. 



30 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 



Bayard. 
Bear wallow. 
Beaver Kiver. 
Bedford. 
Bee Spring. 
Bellton. 
Benezette. 
Berea. 
Big Clifty. 
Big Injun. 
Black Hand. 
Blaeksville. 
Black water. 
Birmingham, 
minefield. 
Bluestone. 
Bolivar. 
Bonair. 
Bradford. 
Braxton. 
Breathitt. 
Briceville. 
Broad Top. 
Browntown.. 
Brush Creek. 
Buffalo. 
Buhr. 
Butler. 
Cairo. 
Cambridge. 
Canaan. 
Canal. 
Cannelton. 
Caseyville. 
Cassville. 
Charleston. 
Clarion. 
Clark. 
Clarksburg. 
Cleveland. 
Coal measures. 
Colvins Run. 
Conemaugh. 
Conglomerate. 
Connellsville. 
Connoquenessing. 
Corbin. 
Corry. 
Crawford. 
Crinoidal. 
Curlew. 
Cussewago. 



CARBONIFEROUS — coutinued . 

Cuyahoga. 

Dismal. 

Dotson. 

Eagle. 

Elk Lick. 

Elk River. 

Elkgarden. 

Erie. 

Ewuing. 

Fairfax. 

Fayette. 

Federal Creek. 

Ferriferous. 

Fish Creek. 

Fishpot. 

Flint Ridge. 

Floyd. 

Fort Payne. 

Freeport. 

Frostburg. 

Gallitzen. 

Garland. 

Gilmore. 

Gladeville. 

Great. 

Great Conglomeratc\ 

Green County. 

Greenbrier. 

Griswold Gap. 

Harlan. 

Hartselle. 

Hinton. 

Homewood 

Horsepen. 

Iowa. 

Irondale. 

Johnson River. 

Johnstown. 

JoUvtown. 

Kanawha. 

Kanawha Falls. 

Kinzua. 

Kittanning. 

Lauderdale. 

Lee. 

Lehigh. 

Leitchfield. 

Licking. 

Logan. 

Lookout. 

Lower Green. 

Macksburg. 



Ma'iisonville. 

Mahoning. 

Marvin Creek. 

Massilon. 

Mauch Chunk. 

Maxville. 

Meadeville. 

Mercer. 

Middle Conglomerate. 

Mill Creek. 

Millstone. 

Monongahela River, 

Morgantown. 

Mount Morris. 

Mount Pleasant. 

Mount Sand. 

Mountain. 

New River. 

Newman. 

Newtonville. 

Nineveh. 

Norton. 

Oil Creek Lake. 

Oil Lake. 

Glean. 

Olive. 

Orangeville. 

Oxmoor. 

Panther Creek. 

Pennington. 

Pennsylvanian. 

Pickens. 

Pine Creek. 

Pine Mountain. 

Pithole. 

Pittsburg. 

Pocahontas. 

Pocono. 

Pomeroy. 

Ponent. 

Pottsville. 

Powelton. 

Price. 

Princeton. 

Productive. 

Pulaski. 

Putnam Hill 

Quakertown. 

Quinnemont. 

Raccoon. 

Raleigh. 

Redstone. 



WEfiKS.] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 31 



Riceville. 

Royal. 

Rushville. 

Salteburg. 

Sand Mountain. 

Savage. 

Schreyfogels. 

Scott. 

Scotts Creek. 

Sequoyah. 

Serai. 

Sewanee. 

Sewell. 

Sewickley. 

Sharon. 

Sharpsville. 

Shawnee. 

Shenango. 

Shinersville. 

Siliceous. 

South Carrolton. 

Subconglomerate. 

Sunbury. 

Tar Spring. 

Tellowa. 

Tionesta. 

Trough Creek. 

Tuscumbia. 

Umbral. 

Uniontown. 

Upshur. 

Vanport. 

Venango. 

Verdi. 

Vespertine. 

Walden. 

Wartburg. 

Washington County. 

Waverly. 

Waynesburg. 

Welch. 

White. 

Wildcat Mountain. 

Windy Gap. 

Wise. 

Wyoming Valley. 

Zoar. 

New England. 

Aquidneck. 

Attleboro. 

(boasters Harbpr Island, 



CARBONIFEROUS — coutiuued . 

Conanicut. 

Cranston. 

Kingstown. 

Millers River. 

Natick. 

Pawtucket. 

Pelham. 

Pondville. 

Purgaton. 

Rose Island. 

Roxbury. 

Sachuest. 

Sockanosset. 

Sukonk. 

Tenmile River. 

Tiverton. 

Wamsutta. 

Canada. 

Albert. 

Banff. 

Bonaventure. 

Cache Creek. 

Campbell Creek. 

Cape John. 

Cascade. 

Hopewell. 

Marble Canyon. 

Mertgomist. 

New Glasgow. 

Perry. 

Pictou. 

Portland. 

Riversdale. 

Smalls Brook. 

Smelt Brook. 

Stellarton. 

Union. 

Windsor. 

Woodstock. 

Great Basin region. 

Aubrey. 

Godiva. 

Diamond Peak. 

Humbug. 

Lodore. 

Mammoth. 

Red Wall. 

Wahsatch. 

Weber. 



Great Lakes region. 

Coldwater. 
Grand Rapids. 
Marshall. 
Michigan salt. 
Napoleon. 
Parma. 

Richmond ville. 
Rock Falls. 
Wood ville. 

Great Plains region. 

Altoona. 

Americus. 

Atchison. 

Auburn. 

Bethany Falls. 

Burlingame. 

Calhoun. 

Carlyle. 

Cave. 

Cave Rock. 

Cave Spring. 

Chanute. 

Chase. 

Cherryvale. 

Cottonwood. 

Cottonwood Falls. 

Deer Creek. 

Douglas. 

Dover. 

Dun. 

Dunlap. 

Earlton. 

Einstine. 

Elgin. 

Elk Falls. 

Elmont. 

Emporia. 

Falls River. 

Florence. 

Fort Scott. 

Gamett. 

Gypsum. \ 

Hartford. 

Howard. 

lola. 

Labette. 

Lane. 

Le Compton. 

he Roy. 



32 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191] 



Marion. 

Marmaton. 

Maryville. 

Neodesha. 

Oread. 

Osage. 

Osage City. 

Oswego. 

Ottawa. 

Pawnee. 

Plattsburg. 

Pleasanton. 

Pottawatomie. 

Robinett. 

Rossville. 

Sea Urchin. 

Severy. 

Shunganunga. 

Silver Lake. 

Soldier Creek. 

Spring Rock. 

Stanton. 

Strong. 

Swallow. 

Syntrialaeina. 

Tecumseh. 

Thayer. 

Topeka. 

Toronto. 

Victoria. 

Vilas. 

Wabaunsee. 

Wakarusa. 

Well Rock. 

Willard. 

Winfield. 

Mississippi Valley. 

Anvil Rock. 

Appanoose. 

Archimedes. 

Ardmore. 

Augusta. 

Aux Vases. 

Baden. 

Bevier. 

Bituminous. 

Burlington. 

Carlinville. 

Chaelites. 

Chariton. 

Cherokee. 

Chester. 

Chouteau. 



CARBONIFEROUS — Continued. 

Clepsydrops. 
Collins ville. 
Concretionary. 
Cooper. 

Coxville. 

Cypress. 

Dekalb. 
Earlham. 

Encrinital. 

English River. 

Ferruginous. 

Forbes. 

Fragmental. 

Fusulina. 

Geode. 

Goniatite. 

Grand River. 

Gray don. 

Graydon Springs. 

Hanging Rock. 

Hannibal. 

Harrodsburg. 

Henrietta. 

High Rock. 

Jonesboro. 

Kansas City. 

Kaskaskia. 

Keokuk. 

Keosauqua. 

Kinderhook. 

Knob. 

Knobstona 

Lady Washington. 

Lagonda. 

Lawrence. 

Lawrence-Crawford. 

Le Grand. 

Lithographic. 

Livingston. 

Louisiana. 

Macon City. 

Mansfield. 

Maple Hill. 

Marais des Cygnes. 

Marshalltown. 

Merom. 

Miller. . 

Mississippian. 

Missouri. 

Missourian. 

Mitchell. 

Moberly. 

Monroe-Harrison. 

Mound Valley. 



North Vernon. 

Orange Martin. 

Nodaway. 

Parkville. 

Pella. 

Platte. 

Plattsmouth. 

Pottery. 

Productal. 

Quarry Creek. 

Quitman. 

Redrock. 

Rhomboida*. 

Riverside. 

Rock Creek. 

Rockcastle. 

Rockford. 

St. Genevieve. 

St. Joe. 

St. Louis. 

Salem. 

Spring River. 

Springvale. 

Summit. 

Thomas Hill. 

Unionville. 

Warrensburg. 

Warsaw. 

Wassonville. 

West Franklin. 

Westerville. 

Weston. 

Winterset. 

Wyckoff. 

Pacific Coast region. 

Baird. 

Bed Rock. 

Blue Canyon. 

Calaveras. 

Cape Horn. 

Clipper Gap. 

Delhi. 

Eureka. 

Little Grizzly Creek. 

McCloud. 

Martinez. 

Pitt. 

Relief. 

Robinson. 

Shoo Fly. 



Rocky Mountain region. 

Arkansas. 
Bad i to. 



WEEKS] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 33 



Blue. 

Castle. 

Eryops. 

Fountain. 

Hermosa. 

Kibbey. 

Leadville. 

Madison. 

Maroon. 

Millsap. 

Monarch. 

Otter. 

Otter Creek. 

Paine. 

Quadrant. 

Rico. 

Wood River. 

Woodhurst. 

Southwestern region. 

Adams Branch. 
Albany. 
Antelope Creek. 
Appleton. 
Atoka. 
Bates vi lie. 
Bead Mountain. 
Belva. 
Bend. 
Big Valley. 
Boggy. 
Boone. 
Boone ville. 
Boston group. 
Brown Creek. 
Brownwood. 
Buffalo Creek. 
Bull Creek. 

Alaska. 

Tachatna. 
Tahkandit. 
Wellesley. 
West Fork. 

Appalachian region. 

Allegrippus. 

Becraft. 

Bell vale. 

Bernardston. 

Black shale. 

Blossburg. 

Burlington. 

Bull. 191—02 



CARBONIFEROUS — coutiuued. 

Burnet Branch. • 

Camp Colorado. 

Camp Creek. 

Campophyllum. 

Canyon. 

Carrollton. 

Cavaniol. 

Cedarton. 

ChaflSn. 

Cherry. 

Cisco. 

Coleman. 

Coon Mountain. 

Cottonwood Creek 

Cross Plains. 

Elliott Creek. 

Elm Creek. 

Fayetteville. 

Fox Ford. 

Frickham. 

Genevieve. 

Granville. 

Grape Creek. 

Greenwood. 

Hanna Valley. 

Hartshorne. 

Hartwell. 

Hog Creek. 

Home Creek. 

Hordes Creek. 

Horse Creek. 

Indian Creek. 

Jagger Bend. 

Kessler. 

Lohn. 

Lost Creek. 

Lynch Creek. 

DEVONIAN. 

Cadent. 

Camden. 

Cardiola. 

Cascade. 

Cashaqua. 

Catskill. 

Cauda-Galli. 

Chapman. 

Chattanooga. 

Chautauquan. 

Chemung. 

Cherry Ridge. 

Cleveland. 

Coeymans. 

-8 



McAlester. 

Milburn. 

Milburn-Strawn. 

Norristown. 

Novaculite. 

Paint Rock. 

Parks Mountain. 

Pawhuski. 

Pentremital. 

Poteau. 

Richland. 

Ricker. 

Rochelle. 

Rough Creek. 

Russellville. 

Saddle Creek. 

Santa Anna. 

Savanna. 

Sebastian. 

Shadrick Mill. 

Shoal Creek. 

Spadra. 

Speck Mountain. 

Spring Creek. 

Stockwether. 

Strawn. 

Sylamore. 

Talpa. 

Thurman. 

Tomlinson. 

Valera Bend. 

Waldrip. 

Washburn. 

Washington. 

Watts Creek. 

Wilbarger Creek. 

Wyman. 



Columbus. 

Corniferous. 

Cuboides. 

Delaware. 

Dellville. 

Dorset. 

Elk. 

Elk Mountair 

Ellicottsville. 

Encrinalf 

Erian. 

Erie. 

Esopus. 

Falls Creek. 



34 



NORTH AMEBICAN GEOLOGIC FORMATION NAMES. [bcll.19L 



Flagstone. 
Frog Mountain. 
Gardeau. 
GeneHee. 
Girard. 
Grainger. 
Great Bend, 
(treen Pond. 
Hamilton. 
HelderlK»rg. 
Helderbergian. 
Honesdale. 
Hosnier. 
Ithaca. 
Jennings. 
Kiniberling. 
Kings Mill. 
Lacka waxen. 
I^boeuf. 
Little Genesee 
Louisville. 
Ludlow ville. 
McKean. 
Manlius. 
Marcel Ins. 
Monteballo. 
Monterey. 
Montrose. 
Moscow. 
Mount Pleasant. 
Naples. 
New Milford. 
New Scotland. 
Nunda. 
Ohio. 
Old Red. 
Olentangy. 
. Oneonta. 
Onondaga. 
Oriskany. 
Panama. 
Panola. 
Perry. 
Peru. 
Ponent. 
Portage. 
Postmedidial. 
Romnev. 
Salamanca. 
Sandusky. 
Schoharie. 
Scioto. 
Selinsgrove. 



DEVONIAN — continued. 

Seneca. 

Senecan. 

Sherburne. 

Skaneateles. 

Skunnemunk. 

StaffonL 

Stanicca. 

Stony Brook. 

Storniville. 

Styliolina. 

Sweetland. 

Tentaculite. 

Towanda. 

Tully. 

Tuna. 

risterian. 

Venango. 

Vergent. 

West Jeffei>on. 

Wolf Creek. 

(hnada. 

Bloomsbury. 

Gaspe. 

Intermediate. 

Kingston. 

Lambton. 

Little River. 

Manitoban. 

Mispec. 

Winnipegosan. 

Great Basin region 

Nevada. 
Ogden. 

Temple Butte. 
White Pine. 

Great Lakes regiim. 

Dundee. 

Little Traverse Bay. 
St. Clair. 
Thunder Bay. 
. Traverse. 

Mississippi Valfeg. 

Brown. 
Bunker Hill. 
Callaway. 
Cedar Valley. 
Clear Creek. 
Davenport. 
Delphi. 
Favette. 



Grand Tower. 

(irassy Creek. 

(ivroceras. 

Hackl)erry. 

Hannilml. 

Huron. 

Independence. 

Kenwoo<l. 

Kinderhook. 

King. 

Lime Creek. 

Louisian. 

Louisville-Delphi. 

^lontpelier. 

New Albany. 

New Providence. 

North Vernon. 

Otis. 

Phelps. 

Riverside. 

Rockford. 

Sac. 

Sellersburg. 

Shelbv. 

Snvder Creek. 

Spirifera pennataT 

State Quarry. 

Sylamore. 

Vernicular. 

Walker Block. 

W^apsipinicon. 

Warren. 

New England. 

Moose Island. 
Moose River. 
Newport. 
Paupack. 

Pacific Coast region. 

Arlington. 

Kennett. 

Sacramento, 

Rocky Mountain region. 

Jefferson. 
^Monarch. 
Ourav. 
Parting. 
Three Forks. 

Southwestern region. 

Eureka. 



WEEKS.] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 35 



Appalachian region. 

Athens. 

Barree. 

Bastard. 

Bays. 

Beavertown. 

Bloomfield. 

Bloomsburg. 

Blue. 

Blue Shell. 

Bossardville. 

Bridgeport. 

Cacapon. 

Cedarville. 

Clarkes Mill. 

Cliff. 

Clinch. 

Clinch Mountain. 

Clinton. 

Cove. 

Crab Orchard. 
• Cumberland. 

Damourite. 

Dayton. 

Decker Ferry. - 

Delthyris. 

Dyestone. 

Garrard. 

Giles. 

Grand Rapids. 

Green Pond. 

Hampshire. 

Hancock. 

Harpeth. 

Helderberg. 

Highbridge. 

Hillsboro. 

Holland. 

Hydraulic. 

Juniata. 

Levant. 

Lewistown. 

Lexington. 

Longwood. 

Lowville. 

McCo)i»wn. 

Manlius. 

Massanutten. 

Medina. 

Meniscus. 

Meridian. 



SILURIAN. 






s 


Mifflintown. 


Great Basin region. 


Moccasin. 




Monclova. 


Eureka. 


Monterey. 


Lone Mountain. 


Montgomery. 


Great Lakes region. 


Neeleytown, 


Byron. 


Niagara. 


Coralline. 


Niagaran. 

Oneida. 

Onondaga. 


Gray. 

Mayville. 

Monroe. 


Oswegan. 


Racine. 


Oswego. 


Sylvania. 


Panola. 


Waukesha. 


Pentamerus. 




Postmeridian. 


Mississippi VaUey. 


Poxono Island. 




Pre-Meridian. 


Anamosa. 


Primedidial. 


Bertram. 


Proteau. 


Bowling Green. 


Red Mountiiin. 


Cape Girardeau. 


Rensselaer. 


Clear Creek. 


Rockwood. 


Coggan. 


Rondout. 


Coral. 


Salina. 


Glencoe. 


Salmon River. 


Gower. 


Scalent. 


Grand Tower. 


Scutella. 


Joliet. 


Shawangunk. 
Siliceous. 


Laurel. 
Le Claire. 


Sneedville. 


Noix. 


Springfield. 


Osgood. 


Stormville. 
Surgent. 


New England. 


Taylors Ridge. 


Amherst. 


Tellico. 


Aroostook. 


Tuscarora. 


Ashland. 


Tymochtee. 


Bellowspipe. 


Waldron. 


Brimfield. 


Waterlime. 


Cobscook. 


West Union. 


Greylock. 


White Oak Mountain. 


Sheridan. 




Vinal Haven. 


Canada. 


Whitmores Ferry. 


Anticosti. 




Arisaig. 


Pacific Coast region. 


Bertie. 


Grizzly. 


Cayuga. 


Taylorsville. 


Cobequid. 
Gaspe. 


Rocky Mountain region. 


Guelph. 


Parting. 


Halysites. 


White. 


Mascarene. 


Yule. 



36 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 



HiLiTRiAN — continued. 



SotUhwestem region. 


Glens Falls. 


St. Clair. 




Hinton. 


San Saba. 


Beaver. 


Hoover. 


Wyo. 


Burnet. 


Izard. 




Cason. 


Leon. 




Deep Creek. 


ORDOVICIAN. 




X Appalachian region. 


Mohawkian. 


Elevator. 




Nashville. 


Jordan. 


Auroral. 


Normandy. 


Trfike Superior. 


Avondale. 


Ontarian. 


St. Croix. 


Bamegate. 


Ontaric. 


St. Lawrence. 


Beekmantown. 


Ontario. 


St. Peters. 


Belfast. 


Peach Bottom. 




Berkshire. 


Pelham. 


Mississippi Valley, 


Bird Mountain. 


Pierce. 




Birdseye. 


Point Pleasant. 


Beloit. 


Black River. 


Ridley. 


Bryant. 


Calciferous. 


Rochdale. 


Buff. 


Canadian. 


Rockmart. 


Buffalo. 


Capitol. 


Sevier. 


Cap-au-Gr^s. 


Carters Creek. 


Shenandoah. 


Charette. 


Central. 


Siliceous. 


Crystal. 


Champlain. 


Sparry. 


Folley. 


Chazy. 


Stones River. 


Galena. 


Chester Valley. 


Trenton. 


Girardeau. 


Chickamauga. 


Utica. 


Joachim. 


Cincinnati. 


Wappinger Valley. 


McCum. 


Codorus. 


Westfield. ' 


Magnesian. 


College Hill. 


Whateley. 


Maquoketa. 


Conasauga. 


Winchester. 


Marble. 


Dayton. 




Marble Hill. 


Eolian. 


Canada. 


Receptaculites. 


Everett. 


Cat Head. 


Richmond. 


Flanagan. 


Citadel. 


St. Francois. 


Fossiliferous. 


Farnham. 


St. Thomas. 


Frankfort. 


Trfiuzon. 


Sandstone. 


Glade. 


Levis. 


Shakopee. 


Hudson. 


Marsouin. 


TheVjes. 


Hudson River. 


Mottled. 


Willow River. 


Inwood. 


Phillipsburg. 


Wykoff. 


Isle T^inotte. 


Quebec. 
St. Jean. 




Kentucky. 


New England, 


Knox. 


Winnipeg. 


Canaan. 


Lancaster. 




VyC4f A AUiCwAX • 


Lebanon. 


Great Basin region. 


Chester. 


Lenoir. 


• 


Conway. 


Lorraine. 


Pogonip. 


Egremont. 


Manhatta,n. 


Ute. 


Goshen. 1 


Martinsburg. 

Matinal. 

Moduria. 


Great Lakes region. 
Bluff. 


Granville. j 

Hardwick. 

Hawley. 


Mohawk. 


Eastern. 


Hoosac. 



WEEKS.] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 



37 



ORDOviciAN — continued. 



Leyden. 


Rocky Mountain region. 


Southv'eMem region. 


Riga. 


Fremont. 


Macluria. 


Kowe. 
Savoy. 
Mount Washington. 


Harding. 


Polk Bayou. 


Madison. 
Manitou. 


Rainy Mountain. 
Saccharoidal. 


Waterville. 


CAMBKIAN. 


St. Clair. 


Appalachian region. 


Unicoi. 


Keweenawan. 


• 


Wallkill. 


Tjake Superior. 


Aldrich. 


Wappinger Valley. 


Mendota. 


Antietam. 
Apison. 


Weisner. 
Weverton. 


Mississippi Valley. 


Ashley Hill. 


Wiltons Run. 


Cole Camp. 


Beaver. 


York. 


Crystal City. 


Chikis. 




Dresbach. 


Chilhowee. 


Canada. 


Elevator B. 


Chiques. 




Fredericktown. 


Cochran. 


Acadian. 


Gasconade. 


Cohulta. 


Adams TAke. 


Grand Portage. 


Coosa. 


Athabasca. 


Gritstone. 


Deer Creek. 


Barachois. 


Hinckley. 


Graysonton. 


Belle Isle. 


Jordan. 


Hampton. 


Bow River. 


La Motte. 


Hardistonville. 


Bretonian. 


Le Seur. 


Harpers. 


Castle Mountain. 


Moreau. 


Harpers Ferry. 


Churchill. 


New Richmond. 


Hellem. 


Copper-bearing. 


Pipestone. 


Hesse. 
Honaker. 


Etcheminian. 
Johannian. 


Pokegama. 
Potosi. 


Kentucky. 


Kaministiquia. 


Proctor. 


Knox. 


Nisconlith. 


Puckwunge. 


Loudon. 


Phillipsburg. 


Roubidoux. 


Maryville. 


Pointe Levis. 


St. Croix. 


Montevallo. 


Quebec. 


St. Frangois. 


Murray. 


St. John. 


St. Joseph. 


Nebo. 


Selkirk. 


St. Lawrence. 


Nichols. 


^ Sillery. 


Waswangoning. 


Nolichucky. 




Western. 


North Valley Hill. 


Great Basin region. 


White River. 


Oostanala. 
Potadam 


Hamburg. 


New England. 


Primal. 
Reading. 


Prospect Mountain. 
Secret Canyon. 
Tintic 


Becket. 
Berkshire. 


Rogersville. 


Tonto. 


Cheshire. 


Rome. 


Jk X>^^k^ VX^# 


Coos. 


Russell. 


Great Ijikes reaion. 


Dalton. 


Rutledge. 


»/ 


Eolian. 


Sandsuck. 


Eastern. 


Georgia. 


Shenandoah. 


Eau Claire. 


Granular. 


South Valley Hill. 


Fond du l4\c. 


Kendall (ireen. 


StArr. 


Ilermansville. 


Lincoln. 



38 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 



Lingua. 

Little Compton. 

Monson. 

Nahant. 

Newport Neck. 

Pelham. 

Poughquag. 

Quartzrock. 

St. Albans. 

Stockbridge. 

Stony Brook. 

Swiftwater. 

Appalachian region, 

Catoctin. 

Citico. 

Courtland. 

Edison. 

Franklin. 

Hamburg Mountain. 

Hazel. 

Hemlock. 

Losee Pond. 

Manhattan. 

Monroe. 

Pigeon. 

Sandpond. 

Taconic. 

Talladega. 

Thunderhead. 

Wilhite. 

Canada, 

Anorthosite. 

Aspidella. 

Avalon. 

Conception. 

Huronian. 

Kaministiquia. 

Kingston. 

Momable. 

Ontarian. 

Random. 

Signal Hill. 

Thessalon. 

Torbay. 

Great Lakes region. 

Ajibik. 

Antoine. 

Baraboo. 

Bijiki. 

Black River Falls. 

Bohemia. 



VA MBRi A N — (continued. 

Taconic. 
Taconytc. 
Vermont. 
Winooski. 

Rocky Mountain region. 

Barker. 
Dry ("reek. 
Flathead. 
Gallatin. 
Meagher. 

ALGONKIAN. 

Bone Lake. 

Chippewa. 

Clarksburg. 

Eastern. 

Felch Mountain. 

Goodrich. 

Groveland. 

Hanbury. 

Ishpeming. 

Kona. 

Mansfield. 

Maquethian. 

Marquette. 

Marquette-Menominee. 

Marquettian. 

Menominee. 

Mesnard. 

Michigamme. 

Mount Mesnard. 

Negaunee. 

Ogishke. 

Penokee. 

Penokee-Gogebic. 

Quartz slate. 

Randville. 

St. Louis. 

Siamo. 

Stuntz. 

Sturgeon. 

Thompson. 

Vulcan. 

Wewe. 

Great Basin region. 

Chuar. 

Grand Canyon. 

Unkar. 

Vishnu. 

Mississippi Valley. 

Pilot Knob. 
Sioux. 



Park. 
Pilgrim. 
Sa watch. 
Yogo. 

Southwestern region. 

Blue Creek. 

Hickorv. 

Katemcy. 

Ozark. 

Riley. 



Xetv England, 

Ashton. 

Blackstone. 

Coles Brook. 

Cumberland. 

East Lee. 

Goose Pond. 

Hinsdale. 

Hop Brook. 

Kearsarge. 

Mendon. 

Merrimack. 

Mount Holly. 

Rockingham. 

Smithfield. 

Stamford. 

Tyringham. 

Washington. 

White Mountain. 

Rocky Mountain reg^ion. 

Belt. 

Chamberlin. 

Cherry Creek. 

Empire. 

Greyson. 

Helena. 

Marsh. 

Neihart. 

Newland. 

Salida. 

Sheridan. 

Spokane. 

Southwestern region. 

Llano. 

Mason. 

Packsaddle. 

Texan. 

Texian. 



WEEKS.] BY GEOLOGIC PERIODS AND GEOGRAPHIC PROVINCES. 39 



Appalachian region. 

Broad Branch. 
Chestnut Hill. 
Highland. 
Manayunk. 
Orchard. 
Piedmont. 
Pochuck. 
South Mountain. 

Canada. 

Arvonian. 

Atic Oban. 

Coast. 

Coastal. 

Coldbrook. 

Coutchiching. 

Dore. 

Grenville. 

Hastings. 

Huron ian. 

Kingston. 

Laurentian. 

Norian. 

Quesnel Lake. 

Shuswap. 

Steep Rock. 



Alaska. 

Bettles. 

Birch Creek. 

Bristol Bay. 

Cantwell. 

Copper River. 

Fortymile. 

Greenstone. 

Klondike. 

McCarthy Creek. 

Nasina. 

Nilkoka. 

Nutzotin. 

Rampart. 

Rapids. 

Shushitna. 

Sunrise. 

Tanana. 

Valdes. 

Appalachian region. 

Bridgeton. 
Buncombe. 



ARCHEAN. 

Great Lakes region. 

Animikie. 

Clover C'anyon. 

Glacian. 

Hoi yoke. 

Kewatin. 

Keweenawan. 

Keweenian. 

Kewenan. 

Kitchi. 

Mareniscan. 

Minnesota River Valley. 

Mona. 

Necedah. 

Ophian. 

Palmer. 

Pelodian. 

Porphyrian. 

Portland. 

Quinnesec. 

Republic. 

Siderian. 

Vermilion. 

Waterloo. 



New England. 

Atlantic. 

Franconia. 

Greylock. 

Labrador. 

Labradorian. 

Lake Winnepesaukee. 

Lisbon. 

Lyman. 

Montalban. 

Pemigewassett. 

Pequawket. 

Terranovan. 

Worcester. 

Southwestern region. 

Bodeville. 
Bumetan. 
Click. 
Fernandan. 
Long Grove. 
Long Mountain. 
Iron Mountain. 
Valley Spring. 



Mexico. 



Volcan. 



FORMATIONS OF I NDETERMINED AGE. 



Cades. 

Cherokee slates. 

Clingman. 

Cockeysville. 

Conshohocken. 

Cortlandt. 

Eaton. 

Fairmount. 

Frankford. 

Kennett. 

Kings Mountain. 

Linnville. 

Moose Hide. 

New York. 

Ocoee. 

Oswegatchie. 

Peach Bottom. 

Pope Hollow. 

Setters. 

Yonkers. 

Canada. 

Anderson Riv^er. 
Boston Bar. 



Caribou. 
George River. 
Hunker. 
Indian River. 
Manitonnuck. 
Menevian. 
Mott Haven. 
Nechacco. 
Nipigon. 
Sault St. Mary. 

Great Bami region. 

Arizonian. 
Mesa. 
Re<l Creek. 

Gre((t Lfikes regUni. 

CupriferoiiH. 
L'Anse. 
Logan. 
Mackinac. 
Now rhn. 



40 



NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 



FORMATIONS OF UNDETERMINED AGE — continued. 



Pewabic. 
Point aux Gres. 
Trappean. 

Mississippi Valley, 

Brownsville. 

Cannelton. 

Flat Rock. 

Fort Knox. 

Geneva. 

Golconda. 

Grandad. 

Greensburg. 

Harris City. 

Hawpatch. 

Hindostan. 

Huntingdon. 

Lake Huron. 

Lamont. 

Lost River. 

Pendleton. 



Pine Creek. 
Putnam vi lie. 
St. Anthony. 
Sedalia. 
Williamsport. 

Xew England. 

Bar HarlM)r. 

Bartletts Inland. 

Blanford. 

Bolton. 

Calderwood Neck. 

Cambridge. 

Chitistone. 

Chloritic. 

Cranberry Island. 

Greenwich. 

Klutena. 

Kotlo. 

Lake. 

Mapleton. 



Phipsburg. 
Schooner Head. 
Buttons Island. 
S wanton. 
Taunton. 
Winnepesaukee. 

Pacific Coast region. 

Tolenas. 
Ventura. 

Rocky Mountain region. 

Minnelusa. 
Nampa. 

SouihwesUm region. 

Plymouth. 
Polk County. 

West Indies, 

Caribbean. 



SEDIMENTARY FORMATION NAMES. 

Abilene conglomerate, Haworth. Kan. Univ. Geol. Siirv., vol. i, p. 186. 1896. 

Permian. Kansas. 
Acadian, Dawson. Am. Assoc. Adv. Sci., vol. xvi, pp. 117-119. 1867. 

New Brunswick. 
Acadian, Dawson. Acadian Geolqgy, 2d ed., London, p. 688. 1868. 

New Brunswick. Exact syn. St. John group. 
Acadian, Smith. Ala. Geol. Surv., Kept, for 1875, p. 127. 1876. 

Cambrian. Alabama. 
Acadian group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, p. 271. 1881. 
Acadian series, Matthew. Am. Geol., vol. ii, p. 3. 1888. 

Cambrian. Canada. 
Acadian, Walcott. U. S. Geol. Surv. Bull., No. 81, p. 248. 1891. 

Cambrian. New Brunswick. 
Adams Branch limestone, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 391. 
1893. 

Carboniferous. Texas. Included in Canyon division. 
Adams liake series, Dawson. Can. Geol. Surv., new ser., vol. iv, pp. 29B, 31 B. 
1890. 

British Columbia. 
Adams Lake, Dawson. Geol. Soc. Am., Bull., vol. ii, p. 169. 1891. 

Cambrian? British Columbia. 
Adams Lake, Dawson. Can. Geol. Surv., new ser., vol. vii, pj). 26B, 30B, 33B. 
1896. 

Cambrian or Cambro-Silurian. British Columbia. 
Admiralty clay, Willis. Geol. Soc. Am., Bull., vol. ix, p. 157. 1898. 

Pleistocene. Washington. Included in Admiralty epoch. 
Admiralty till, Willis and Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 
54. 1899. 

Pleistocene. AVashington. 
Aftonian, Chamberlin. Jour, of Geol., vol. iii, pp. 272-273. 1895. 

Pleistocene. Included in Glacial epoch. 
Aftonian stage, Upham. Am. Geol., vol. xvi, p. 103. 1895. 

Pleistocene. Exact syn. Helvetian. 
Aftonian, Chamberlin. Jour, of Geol., vol. iv, pp. 872-876. 1896. 

Pleistocene. Mississippi Valley. 
Aitonian epoch, Todd. Mo. Geol. Surv., vol. x, p. 213. 1896. 

Pleistocene. Missouri. 
Aftonian, Beyer. Iowa Geol. Sur\\, vol. vii, pp. 231-232. 1897. 

Pleistocene. Iowa. 
Aftonian, Norton. Iowa Geol. Surv., vol. ix, p. 474. 1899. 

Pleistocene. Iowa. 

41 



42 NORTH AMERICAN GEOLOGIC FORMATION NAMES. cbull.191. 

AJibik quartzite, Van Hise and Bayley. U. S. (ieol. Surv., 15th Ann. Rept., i>. 540. 
1895. 

Algonkian. Lake Superior rej^ion. Included in I^)wer Marquette series. 
Ajibik quartzite, Smyth. U. S. Geol. Surv., 15th Ann. Kept., p. 610. 1895. 

Algonkian. Lake Superior region. Included in Lower Marquette series. 
Ajibik quartzite, Smyth. U. S. Geol. Surv., Mon., vol. xxviii, pp. 528-529. 1897. 

Algonkian. Michigan. Included in Lower Marquette series. 
Ajibik quartzite/. Van Hise. U. S. Geol. Surv., Mon., vol. xxviii, pp. 282-313. 1897. 

Algonkian. Michigan. Included in Lower Marquette series. 
Alachua clay, Dalland Harris. U. S. Geol. Surv., Bull., No. 84, p. 127. 1892. 

Tertiary. Florida. Included in Pliocene. 
Alachua clay, Dall. Wagner Free Inst., Trans., vol. iv, pp. xi-xiv. 1896. 

Florida. 
Albany division, Cummins. Texas Geol. Surv., 2d Ann. Rept., p. 395. 1891. 

Carboniferous. Texas. 
Albany division, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 421-429. 1893. 

Carboniferous. Texas. Includes Paint Rock, Talpa, Grape Creek, No. 12, Bead 
Mountain, Valera, Jagger Bend, No. 8, Elm Creek, Coleman, No. 5, Indian 
Creek, Hordes Creek, Lost Creek, and Coleman Junction beds. 
Albert shales. Hind. Geol. of New Brunswick, p. 85. 1865. 

Carboniferous. New Brunswick. 
Albert shales, Bailey. Can. Geol. Surv., Rept. 1876-77, pp. 356-371; 386-388. 1878. 

Carboniferous. New Brunswick. Included in Low^er Carboniferous. Exact, syn. 
Baltimore shales. 
Albert shales, Bailey, Matthew, and Ells. Can. Geol. Surv., Rept. 1878-79, pp. 
16D-19D. 1879. 

Carboniferous. New Brunswick. Included in Lower Carboniferous. 
Albertan formation, Dawson. Jour, of Geol., vol, iii, pp. 507-511. 1895. 

Pleistocene. British Columbia. 
Albertan stage, Dawson. Geol. Soc. Am., Bull., vol. vii, p. 45. 1895. 

Pleistocene. Alberta, Canada. 
Albertan, Chamberlin. Jour, of Geol., vol. iv, pp. 872-876. 1896. 

Pleistocene. Alberta, Canada. 
Albertan drift, Leverett. Chicago Acad. Sci., Bull. II of Geol. and Nat. Hist. Sur- 
vey, p. 13. 1897. 

Great Lakes region. Included in Pleistocene. 
Albirupean, Uhler. Am. Phil. Soc, Proc, vol. xxv, p. 42. 1888. 

Jurassic? Maryland. 
Albirupean, Uhler. Md. Acad, of Sci., Trans., vol. i, p. 45. 1889. 

Cretaceous. Maryland. 
Albirupean, Clark. Johns Hopkins Univ. Circulars, vol. ix, p. 69, and vol. x, pp. 
105-108. 1890. 

Mesozoic. Virginia-Maryland. 
Albirupean, Darton. Geol. Soc. Am., Bull., vol. ii, p. 436. 1891. 

Cretaceous. Maryland. 
Albirupean, Uhler. Md. Acad, of Sci., Trans., vol. i, pp. 185-201. 1892. 

Cretaceous. Maryland. Part. Syn. Potomac. 
Albirupean series, Ward. U. S. Geol. Surv., 15th Ann. Rept., p. 332. 1895. 
• Cretaceous. Maryland. Included in Potomac. 

Aldrich limestone, McCally. Ala. Geol. Surv., Rept. on Valley Regions, pt. ii, pp. 
41-42; 692-712, 767. 1897. 

Cambrian. Alabama. Exact Syn. Beaver limestone. 
Algoma sand, Logan. Can. Geol. Surv., Rept. 1843-63, pp. 887, 907-908. 1863. 

Pleistocene. Canada. 



WEEKS.] AJIBIK ALTAMONT. 43 

Allegheny series, Rogers. Pa. State Geol., 4th Ann. Rept., p. 177. 1840. 

Carboniferous. Pennsylvania. Exact Svn. Lower Coal Measures. 
Allegheny River series, Stevenson. Am. Phil. Soc, Trans., vol. xv, pp. 27-30. 1873. 

Carboniferous. West Virginia. Includes Mahoning sandstone. 
Allegheny River Coal Measures, Ashburner. Am. Phil. Soc., Proc.. vol. xvi, pp. 
519, 534. 1877. 
Carboniferous. Pennsylvania. Includes Mahoning sandstone. Exact Syn. 
Lower Productive Measures. 
Allegheny River series, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept., 1886, pp. 79-81 
1887. 
Carboniferous. Pennsylvania. Exact Syn. Lower Productive Measures. 
Allegheny River series. White. U. S. Geol. Surv., Bull., No. 65, p. 99. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Lower Coal 
Measures. Includes Upper Freeport limestone and sandstone, Bolivar fire clay. 
Lower Freeport limestone and sandstone, Johnstown (cement) limestone, Kit- 
tanning fire clay and sandstone, Ferriferous limestone, and Eagle limestone. 
Allegheny River series, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. 3, pt. ii, 

pp. 2155-2405. 1895. 
• Carboniferous. Pennsylvania. Exact Syns. No. xiii. Lower Productive Measures. 
Allegheny River coal series. White. W. Va. Geol. Surv., vol. i, p. 202. 1899. 

Carboniferous. West Virginia. 
Allegheny series. White. Geol. Soc. Am., Bull., vol. xi, pp. 147-157. 1900. 
Carboniferous. Pennsylvania. Includes Clarion group, Kittanning group and 
Freeport group. 
Allegheny formation, 0*Hari*a. Md. Geol. Surv., Allegany County, p. 115. 1900. 

Carboniferous. Maryland. 
Allegrippus conglomerate. White. 2d Pa. Geol. Surv., Rept. T'', i)p. 99-100. 1885. 

Devonian. Pennsylvania. Included in Chemung. 
Allegrippus conglomerate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1554- 
1556. 1892. 
Devonian. Pennsylvania. Included in Chemung. Exact syn. Chemung lower 
conglomerate. 
Alma limestone, Prosser. Geol. Soc. Am., Bull., vol. vi, p. 44. 1894. 

Permian. Kansas. Included in Cottonwood formation. 
Alnwick lake beds. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 

1894. Eocene. Colorado. 
Altamaha grit, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 
Miocene. Georgia. Included in Miocene (Chesapeake epoch). Part. syn. Grand 
Gulf group. 
Altamaha grit, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 81. 1892. 

Tertiary. Georgia. 
Altamaha grit, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, p. 164. 1894. 

Tertiary. Florida. 
Altamont moraine, Todd. U. S. Geol. Surv., Bull., No. 144, p. 13. 1896. 

Pleistocene. Dakota^. Exact Syn. First or Outer Moraine. 
Altamont limestone, Adams. Kan. Univ. Geol. Surv., vol. i, p. 22, 1896. 

Carboniferous. Kansas. 
Altamont moraine, Beyer. Iowa Geol. Surv., vol. vii, p. 239, 1897. 

Pleistocene. Iowa. 
Altamont limestone, Haworth. Kan. Tniv. Geol. Surv., vol. iii, pp. 6, 92, 94, 100. 
1898. 
Carboniferous. Kansas. Included in Manhattan formation. 
Altamont moraine, Todd. I^. S. Geol. Surv., Bull., No. 158, pp. lH-41. 1899. 
Pleistocene. South Dakota. Exact Syn. First or OuU^r Moraine. 



44 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bill. 191. 

Altamont moraine, Wilder. Iowa (ieol. Siirv., vol. x, p. 182. 1900. 

Pleistocene. Iowa. 
Alton group, Ashbumer. 2d Pa. (ieol. Surv., Kept. R^ pp. 367-873. 1885. 

Carboniferous. Pennsylvania. 
Alton coal group, D'Invilliers. 2d Pa. (ieol. Surv., Final Rept., vol. iii, pt. i, 
p. 1876. 1895. 

Carboniferous. Pennsylvania. Included in No. xii, Pottsville conglomerate. 
Altoona limestone, Haworth and Piatt. Kan. Univ. Quart., vol. ii, p. 117. 1894. 

Carboniferous. Kansas. Kxact Syn. P>ie limestone. 
Alum Bluflf series, Langdon. Ga. Geol. Surv., 1st Rept. of Prog., p. 97. 1891. 

Tertiary. Georgia. 
Alum Bluff series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., pp. 57, 97. 1891. 

Tertiary. Georgia. Included in Miocene. 
Alum Bluff beds, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 122. 1892. 

Tertiary. Florida. 
Alum Bluff beds, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, pp. 147, 165. 
1894. 

Tertiary. Florida. Included in Miocene. 
Amboy clays, Hollick. Geol. Soc. Am., Bull., vol. vii, p. 14. 1895. 

Cretaceous. New Jersey. Part. Syn. Albirupean. 
Amboy clay, Newberry. U. S. Geol. Surv.,. Mon., vol. xxvi, p. 21. 1895. 

Cretaceous. New Jersey. 
Amboy clay, Hollick. Am. Assoc. Adv. Sci., Proc, vol. xlvii, p. 293. 1898. 

Cretaceous. New Jersey. New England. 
Americus limestone, Kirk. Kan. Univ. Geol. Surv., vol. i, pp. 80-81. 1896. 

Carboniferous. Kansas. 
Ames limestone, Andrews. Ohio Geol. Surv., vol. i, pt. i, pp. 285, 296. 1873. 

Carboniferous. Ohio. Included in Coal Measures. 
Ames limestone, Lovejoy. Ohio Geol. Surv., vol. vi, pp. 681, 682. 1888. 

Carboniferous. Ohio. 
Amherst feldspathic mica-schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 50. 1898. 

Silurian. Massachusetts. 
Amphitheater dolomite, Cragin. Am. Geol., vol. xix, p. 858. 1897. 

Permian. Kansas. Oklahoma. Included in Dog Creek formation of Cimarron 
series. 
Amyzon beds, Clark. U. S. Geol. Surv., Bull., No. 83, p. 141. 1891. 

Tertiary. Interior region. 
Amyzon group, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 281. 1892. 

Tertiary. Oregon. 
Amyzon shales, Scott. Geol. Soc. Am., Bull., vol. ix, p. 404. 1898. 

Tertiary. Nevada. Included in Oligocene. 
Amyzon formation, Smith. Jour, of Geol., vol. viii, pp. 454-455. 1900. 

Tertiary. Western North America. Included in Eocene. 
Anacacho formation. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
p. 240. 1898. 

Cretaceous. Texas. Included in Montana division of Gulf series. 
Anacacho formation, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 

Cretaceous. Texas. Included in Gulf series. 
Anamosa beds, Norton. Iowa Geol. Surv., vol. iv, pp. 130-135. 1895. 

Silurian. Iowa. Included in Upper Silurian. Exact Syns. Mount Vernon beds. 



I 



WEEKS.] ALTAMONT AN0RTH08ITE. 45 

Anamosa stage, Calvin. Iowa Geol. Surv., vol. v, pp. 56-60. 1896. 

Silurian. Iowa. Included in Niagara series. 
Anamosa limestone, Calvin. Iowa Geol. Surv., vol. vii, pp. 55-57. 1897. 

Silurian. Iowa. Included in Niagara. 
Anamosa stone, Norton. Iowa Geol. Surv., vol. ix, p. 424. 1899. 

Silurian. Iowa. Included in Gower stage. 
Anderson sandstone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 
1896. 

Carboniferous. Tennessee. 
Anderson sandstone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 40. 
1897. 

Carboniferous. Tennessee. 
Anderson River group, Selwyn. Can. Geol. Surv., Kept. 1871-72, pp. 62-63. 1872. 

British Columbia. Exact Syn. Boston Bar group. 
Animas River beds. Cross. U. S. Geol. Surv., Mon., vol. xxvii, p..'217. 1896. 

Cretaceous. Colorado. Included in Post Laramie. Exact Syn. Denver. 
Animikie, Irving. Ut S. Geol. Surv., 3d Ann. Rept., pp. 165, 166. 1883. 

Archean. Michigan. Included in Huronian. 
Animikie group, Irving. Science, vol. i, pp. 140, 360. 1883. 

Huronian. 
Animikie formation, McKellar. Can. Roy. Soc, Trans., vol. v, nee. iv, pp. 63-73. 
1888. 

Archean. Canada. 
Animikie, Winchell. Am. Geol., vol. i, pp. 14-24. 188^. 

Archean. Minnesota. 
Animikie series, Winchell. Minn. Geol. and Nat. Hist. Surv., 16th Ann. Rept., pp. 
352-360. 1888. 

Huronian. Minnesota. 
Animikie, Lawson. Geol. Soc. Am., Bull., vol. i, p. 164. 1889. 

A Igonkian? Canada. 
Animikie, Van Hise. U. S. Geol. Surv., 10th Ann. Rept., p. 402. 1890. 

Algonkian. Wisconsin, Minnesota. Exact syn. Penokie. 
Animikie series. Van Hise. Int. Cong, of Geol., 5th Session, pi. xiv. 1893. 

Algonkian. Lake Superior Region. Included in Huronian. 
Animikie series, Spurr. Minn. Geol. and Nat. Hist. Surv., Bull., No. 10, p. 3. 1894. 

Minnesota. 
Animikie, Mclnnes. Can. Geol. Surv., new ser., vol. x, pp. 23H-24H. 1898." 

Ontario. 
Animikie, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Algonkian. Included in Upper Huronian. Part. Syns. Marquette, Kaministiguia, 
Penokee, Gogebic, Chippewa, and Baraboo. 
Animikie, Grant. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. iv, pp. 180, 
323, 417, 466, 484, 493. 1899. 

Cambrian. Minnesota. 
Animikie, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iv, pp. 296, 
374. 1899. 

Cambrian. Minnesota. Included in Taconic. 
Animikie, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. v, p. 46. 
1900. 

Cambrian. Minnesota. 
Anoma chalk. Hill. Geol. Soc. Am., Bull., vol. v, p. 308. 1894. 

Cretaceous. Indian Territory. 
Anorthosite series, Adams. Jour, of Geol., vol. i, pp. 332-335. 1898. 

Algonkian. Canada. 



46 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191, 

Antelope moraine, Todd. U. S. Geol. Surv., Bull., No. 144, pp. 11, 45. 1896. 

Pleistocene. North and South Dakota. Exact 8yn. Third moraine. 
Antelope Creek bed, Drake. Texas Geol. Surv., 4th Ann. Kept, pp. 385-386. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Anthracite formation, Zachariah. Am. Jour. Sci., Ist ser., vol. iv, pp. 1-8. 1821. 

Carboniferous. Pennsylvania. Includes Lehigh Coal. 
Anthracite Coal Measures, Rogers. Pa. State Geol., 2d Ann. Rept, pp. 71-79. 1838. 

Carl>oniferous. Pennsylvania. Exact Syn. No. xiii. 
Anticosti group, Logan. Can. Geol. Surv., Rept., 1843-1863, pp. 298-344. 1863. 

Silurian. Canada. Included in Middle Silurian. Includes Oneida conglomerate, 
Medina sandstone, Clinton group, and Niagara group. 
Anticosti group, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv. No. iv, p. 268. 1881. 

Silurian. 
Anticosti group, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 9. 1888. 

Canada. 
Antietam sandstone, Williams and Clark. Maryland: Its Resources, Industries, 
and Institutions, p. 68. 1893. 

Cambrian. Maryland. 
Antietam sandstone, Keith. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, pp. 335-337. 
1894. 

Cambrian. Virginia, Maryland. 
Antietam sandstone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 10. 
1894. 

Cambrian. Virginia, Maryland, and West Virginia. 
Antietam formation, Clark. Md. Geol. Surv., vol. i, pp. 157, 178. 1897. 

Cambrian. Maryland. 
Antiguan marls, Vaughan. Science, new ser., vol. xii, pp. 873-875. 1900. 

Tertiary. Georgia. Part. Syn. Chattahoochee limestone. 
Antoine dolomite, Van Hise. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 16. 
1899. 

Algonkian. Michigan. Included in Lower Menominee. 
Anvil Bock sandstone, Owen. Ky. Geol. Surv., vol. i, pp. 29-78. 1856. 

Carboniferous. Kentucky. Included in Lower Coal Measures. 
Anvil Rock sandstone, Lesquereux. Geol. Reconn. Indiana, Rept., 1859-60, p. 308. 
1862. 

Carboniferous. Indiana. 
Anvil Rock sandstone, Lesijuereux. 111. Geol. Surv., vol. i, pp. 213, 217, 232. 1866. 

Carboniferous. Illinois. Included in Coal Measures. 
Anvil Rock sandstone, Cox. Indiana Geol. Surv., 1st Ann. Rept. for 1869, p. 18. 1869. 

Carboniferous. Indiana. Exact Syn. Mahoning sandstone. 
Anvil Rock, Collett. Indiana Dept. Geol. and Nat. Hist., 13th Ann. Rept. for 1883. 
p. 9, 49. 1884. 

Carboniferous. Indiana. 
Apishapa formation, Gilbert. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 567. 
1896. 

Cretaceous. Colorado. Included in Niobrara group. 
Apishapa formation. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 58, 
1899. 

Cretaceous. Colorado. Included in Niobrara. 
Apishapa formation. Hills. U. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 68. 
1900. 

Cretaceous. Colorado. Included in Niobrara formation. 
Apison shale, Hayes. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folios 2, 4, 6, 20. 1894-95. 

Cambrian, Georgia, Tennessee. 



f 

I 
I 



WEEKS] ANTELOPE ARAPAHOE. 47 

Apison shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 16. 1895. 

Cambrian. Tennessee, North Carolina. 
Appanoose beds. Bain. Iowa Geol. Surv., vol. v, pp. 378-894. 1896. 

Carboniferous. Iowa. Included in Des Moines stage. 
Appanoose, Bain and Leonard. Geol. Soc. Am., Bull., vol. x, p. 11. 1899. 

Carboniferous. Iowa. Included in Upper Carboniferous. 
Appleton stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Includes Crossplains sandstone, Russell ville shale, 
Washbume sandstones. 
Appomattox formation, McGee. Am. Jour. Sci., 3d ser., vol. xxxv, pp. 328-330. 
1888. 

Tertiary. Virginia. 
ApjX)mattox formation, McGee. Am. Jour. Sci., 3d ser., vol. xl, pp. 15-41. 1890. 

Tertiary. Atlantic t^oastal Plain. 
Appomattox, Darton. Geol. Soc. Am., Bull., vol. ii, p. 432. 1891. 

Tertiary. Virginia, Maryland. 
Aquia Creek series, Ward. U. S. Geol. Surv., 15th Ann. Rept., p. 326. 1895. 

Cretaceous. Maryland, Virginia. Included in Potomac. 
Aquia Creek, Clark. U. S. Geol. Surv., Bull., No. 141, pp. 54, 57. 1896. 

Tertiary. Virginia. Included in Eocene. 
Aquia Creek stage, Clark. Am. Jour. Sci., 4th ser., vol. i, pp. 369, 370. 1896. 

Tertiary. Virginia. Included in Eocene (Pamunkey formation). Part. Syn. 
Middle or Upper Lignitic (p. 374). 
Aquidneck shales, Shaler, Wood worth, and Foerste. U. S. Geol. Surv., Mon., 
vol. xxxiii, pp. 348-364. 1899. 

Carboniferous. Rhode Island. 
Arago beds, Diller. U. S. Geol. Surv., 17th Ann. Rept., pt. 1, pp. 458-462. 1896. 

Or^on. Included in Eocene. 
Arago beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 343. 1898. 

Oregon. Included in Eocene. Claibornian stage. 
Arago formation, Diller. U. S. Geol. Surv., 19th Ann. Rept., i)t. iii, i)p. 319-320. 
1899. 

Oregon. Included in Eocene. Includes Coaledo and Pulaski formations. 
Arago formation, Smith. Jour, of Geol., vol. viii, pp. 459-460. 1900. 

Tertiary. Oregon. Included in Eocene. Includes Pulaski and Coaledo forma- 
tions. 
Arapahoe beds, Eldridge. Colo. Sci. Soc, Proc, vol. iii, p. 99. 1888. 

Tertiary. Colorado. Exact Syn. Willow Creek beds. 
Arapahoe, Eldridge. Colo. Sci. Soc, Proc, vol. iii, p. 97, footnote. 1888. 

Tertiary. 
Arapahoe, White. U. S. Geol. Surv., Bull., No. 82, p. 150. 1891. 

Cretaceous. Colorado. 
Arapahoe, Clark. U. S. Geol. Surv., Bull., No. 83, p. 135. 1891. 

Cretaceous. Colorado. 
Arapahoe formation. Cross. Am. Jour. Sci., 3d ser., vol. xliv, p. 20. 1892. 

Tertiary. Colorado. 
Arapahoe formation, Cannon. Colo. Sci. Soc, Proc, vol. iv, p. 253. 1893. 

Cretaceous. Colorado. 
Arapahoe, Emmons, Cross, and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, pp. 
31, 151, 206. 1896. 

Tertiary? Colorado. 
Arapahoe, Cross. U. S. Geol. Surv., Mon., vol. xxvii, p. 206. 1896, 

Tertiary? Colorado. 



48 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (bull. 191. 

Arapahoe, Davin. Am. Acaci. Art. ami Bci., Proc, vol. xxxv, p. 356. 1900. 

Tertiary. Colorado. 
Arcadia flayn, I^rch. Preliin. Itept. ujmn the hills of Ija. pouthof the V., 8. and 
P. R. R. (leol. aud Agric. La. Exp. Sta., pt. ii, p. 85. 1893. 
Tertiary. Include<l in Eocene. Exact Syn. Gray clays. 
Arcadia clays, Vaiighan. ^ U. S. (Jeol. Surv., Bull., No. 142, p. 18. 1896. 

Tertiary. Louisiana. Included in Pk)cene. Lower Claiborne. 
Archer, Scott, (ieol. Soc. Am., Bull., vol. v, p. 595. 1894. 

Tertiary. Florida. Included in I"pt>er Miocene. Loup Fork. 
Arcliiinedes limestone, Shumard. Mo. Geol. Surv., 1st and 2d Ann. Repte., pt. ii, 
pp. 151, 170, 181. 1855. 
Carboniferous. Missouri. 
Archimedes limestone. Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 95, 
174, 194. 1855. 
Carboniferous. Missouri. Include<l in Mountain or Lower Carboniferous lime- 
stone. 
Archimedes limestone, Upi)er, Swallow. Am. Assoc. Adv. Sci., Proc., vol. ii, p. 5. 
1857. 
Carlx)niferou8. Missouri. 
Archimedes limestone, Owen. First Report of a RetM)nnoissanc« of the Northern 
Counties of Arkansas, 1857-58, p. 34. 1858. 
Carlx)niferous. Arkansas. 
Archimedes, Owen. Geol. Reccmn. State of Indiana, Rept. 1837, pp. 20, 21. 1859. 

Carboniferous. Indiana. 
Archimedes limestone, White. Boston Soc. Nat. Hist., Proc, vol. vii, 1859-1861, p. 
321. 1860. 
Iowa. 
Archimedes limestone, Shumard. Mo. Geol. Surv., Rept. 1855-1871, pp. 279, 292, 
294, 321. 1873. 
Carboniferous. Missouri. Includes Upper Archimedes, Kaska^^kia limestone of 
Hall, 3d Archimedes. 
Archimedes, 3d, Shumard. Mo. Geol. Surv., Rept. ia55-1871, p. 305. 1873. 

Carboniferous. Missouri. Exact Syn. Warsaw. 
Archimedes limestone, Meek. Mo. Geol. Surv., Rept. 1855-1871, p. 172. 1873. 

Carboniferous. Missouri. Included in Lower Carboniferous. 
Archimedes limestone, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 95. 1874. 

Lower Carboniferous. Missouri. Included in Keokuk. 
Archimedes limestone, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 55-74, 150. 
1888. 
Carboniferous. Arkansas. Included in Lower Carboniferous. 
Archimedes limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, pp. 92-94. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Archimedes, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, p. 325. 1898. 

Carboniferous. Missouri. Exact Syn. Keokuk limestone. 
Ardmore limestone, Gordon. Mo. Geol. Surv., vol. ix, sheet rept. No. 2, p. 20. 
1896. 
Carboniferous. Missouri. Included in Lower Coal Measures. 
Arenaceous jrroup, Marcou. Boston Soc. Nat. Hist., Proc, vol. viii, 1861-62, p. 87. 
1861. 
Cretaceous. Texas. Included in Upper Cretaceous. 
Arietna bed, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 719-720. 1891. 

Cretaceous. Texas. Included in Washita division. 
Arietna clay, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 347-348. 1892. 
Cretaceous. Texas. Included in Washita division of Lower Cretaceous. 



WEEKS.] ARAPAHOE ASHLEY. 49 

Arickaree shales, Cragin. Colo. College Stud., vol. vi, p. 52. 1896. 

Cretaceous. Kansas. Included in Fox Hills. 
Arickaree beds, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-27. 1898. 

Upper Cretaceous. Kansas. Exact syn. Fort Pierre shale. 
Arikaree formation, Darton. U. S. Geol. Surv., 19th Ann. Rept., pt. iv, pp. 735, 
743-747. 1899. 
Nebraska. Included in Miocene. 
Arisaig series, Dawson. Can. Nat., vol. v, pp. 135-137. 1860. 

Silurian. Canada. Included in Middle Silurian. 
Arizonian slates, Blake. Rept. of Governor of Arizona to Secretary of Interior, 
1899, p. 139. 1900. 

Arizona. 
Arkadelphia shales. Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 53-56. 1888. 

Tertiary. Arkansas. Included in Camden series. 
Arkansas sandstone, Endlich. U. S. Geol. and Geog. Surv\ of Terr., 10th Ann. 
Rept., p. 129. 1878. 

Carboniferous. Colorado. Included in Upper Carboniferous. 
Arkona beach, Sherzer. Mich. Geol. Surv., vol. vii, pt. i, pp. 138-140. 1900. 

Pleistocene. Michigan. 
Arlingrton beds, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Carboniferous. California. 
Arlington, Diller. U. S. Geol. Surv., Geol. Atlas of U. S., FoUo No. 15. 1895. 

Devonian. California. 
Aroostook limestone, Gregory. U. S. Geol. Surv., Bull., No. 165, p. 141. 1900. 

Maine. 
Aroostook limestone, Williams. U. S. Geol. Surv., Bull., No. 165, p. 44. 1900. 

Silurian. Maine. 
Artemisia gravel, Logan. Can. Geol. Surv., Rept. 1843-1863, pp. 887, 908-910. 1863. 

Pleistocene. Canada. 
Artemisia gravel, Spencer. Geol. Soc. Am., Bull., vol. i, p. 86. 1889. 

Pleistocene. Great Lakes Region. 
Arundel formation, Clark. Md. Geol. Surv., vol. i, pp. 156, 190. 1897. 

Jurassic. Maryland. 
Arundel formation, Clark and Bibbins. Jour, of Geol., vol. v, pp. 485-489. 1897. 

Jurassic. Maryland. Included in Potomac group. Upper Jurassic. 
Arvonian, Whitney and Wadsworth. Mus. Comp. ZooL, Bull., vol. vii, 1880-1884. 
p. 561. 1884. 

Archean. 
Arvonian, Pumpelly. Geol. Soc. Am., Bull., vol. iv, p. 383. 1893. 

Archean. Canada. 
Ashland shale and limestone, Williams. U. S. Geol. Surv., Bull., No. 165, pp. 49- 
54. 1900. 

Silurian. Maine. 
Ashley beds, Tuomey. Geology of South Carolina. 1848. 

Tertiary. South Carolina. Included in Eocene. 
Ashley River beds, Pratt. Ashley River Phosphates. 1868. 

Tertiary. South Carolina. Included in Eocene. 
Ashley Phosphate beds, Leidy. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 209. 187-(?). 

South Carolina. 
Ashley River beds. Holmes. Phosphate Rock of South Carolina. 1848. 

Tertiary. South Carolina. Included in Eocene. 
Ashley River marl, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 340. 1898. 

Tertiary. South Carolina. 

Bull. 191—02 4: 



50 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Ashley Hill limestone, Dale. U. S. Geol. Surv., 13th Ann. Kept., pt. ii, p. 312. 
1893. 

Cambrian. New York. 
Ashton schists, Shaler, Wooclworth, an<l Foerste. U. 8. Geol. Surv., Mon., vol. 
xxxiii, p. 107. 1899. 

Algonkian. Rhode Island. Included in Blackstone series. 
Aspalaga chalk, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, p. 154. 
1894. 

Tertiary. Florida. Included in Miocene. 
Asphalto Lake bed, Cooper. Cal. Acad. 8ci., Proc. for 1893-94, 2d ser., vol. iv, 
p. 168. 1895. 

Tertiary. California. Included in Pliocene. 
Aspidella slate, Murray. Geol. of Newfoundland, pp. 280-288. 1881. 

Algonkian. Newfoundland. 
Astoria, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, pp. 223-225, 254. 1892. 

Tertiary. Oregon. Alaska. 
Atane beds. White and Schuchert. Geol. Soc. Am., Bull., vol. ix, p. 345. 1898. 

Cretaceous. Greenland. Included in Upper Oetaceous. 
Atane beds, Dall. U. S. Geol. Surv., 18th Ann. Kept., pt. ii, p. 346. 1898. 

Tertiary. Greenland. Included in Eocene. 
Atchison shale, Keyes. Am. Geol., vol. xxiii, p. 309. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Atchison shales, Keyes. Iowa Acad. Sci., Proc., vol. vii, p. 94. 1900. 

Carboniferous. Mississippi Valley. Included in Coal Measures. 
Athabasca sandstone, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, p. 51D. 
1893. 

Cambrian. Canada. 
Athabasca sandstone, Tyrrell. Can. Geol. Surv., new ser., vol. ix, Rept. F, p. 171. 
1898. 

Cambrian. Hudson Bay region. 
Athens marble, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. Included in Niagara. 
Athens shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 4, 20. 1894, 
1895. 

Silurian. Tennessee. 
Athens shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio Nos. 16, 25, 27. 
1895, 1896. 

Silurian. Tennessee, North Carolina. 
• A^thens shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 1899. 

Silurian. Virginia, Tennessee. 
Atic Oban series, Smith. Geol. Soc. Am., Bull., vol. iv, p. 334. 1893. 

Archean. Ontario, Canada. 
Atlantic group, Hitchcock. Geol. of N. Hamp., pt. i, p. 522. 1874. 

Archean. New Hampshire. 
Atlantic series, Hitchcock. Geol. of N. Hamp., ])t. ii, p. 54. 1877. 

Archean. New Hampshire. 
Atlantic gneiss, Hitchcock. Geol. of N. Hamp., pt. ii, pp. 276-277. 1877. 

Archean. New Hampshire. 
Atlantosanrus, Marsh. U. S. Geol. Surv., Mon., vol. xxvii, p. 476. 1896. 

Jurassic. Colorado. 
Atlantosaurus, Marsh. Am. Jour. Sci., 4th ser., vol. ii, pp. 434, 435. 1896. 

Jurassic. Wyoming. 
Atoka formation, Taff and Adams. U. S. Geol. Surv., 2l8t Ann. Rept., pt. ii, p. 273. 
1900. 

Carboniferous. Indian Territory. 



WEEKS.] ASHLEY AUGUSTA. 51 

Attleboro sandstone, Shaler, Wood worth, and Foerste. U. 8. Geol. Surv., Mon., 
vol. xxxiii, p. 151. 1899. 

Carboniferous. Rhode Island. 
Aturia formation, Smith. Jour, of Geol., vol. viii, pp. 463-464. 1900. 

Tertiary. Oregon. Included in Eocene. 
Aubrey, Gilbert. U. S. Geog. and Geol. Surv. West of 100th M., vol. iii, p. 177. 

1875. Carboniferous. Utah. 
Aubrey, Upper, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., pp. 41, 

54, 57, 60, 149. 1876. 
Carboniferous. Utah. 

Aubrey, Lower, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., pp. 41, 

55, 57, 60, 149. 1876. 
Carboniferous. Utah, 

Aubrey, Button. U. S. Geol. Surv., 2d Ann. Rept., p. 114. 1882. 

Carboniferous. Grand Canyon of Colorado. Included in Carboniferous. Exact 
Syn. Coal Measures of Pennsylvania and England. 
Aubrey group, Dutton. U. S. Geol. Surv., 6th Ann. Rept., p. 132. 1885. 

Carboniferous. New Mexico. 
Aubrey sandstone. Lower, Walcott. Geol. Soc. Am., Bull., vol. i, p. 50. 1889. 

Carboniferous. Arizona. 
Aubrey limestone, Upper, Walcott. Geol. Soc. Am., Bull., vol. i, p. 50. 1889. 

Carboniferous. Arizona. 
Auburn shale, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 30. 1898. 

Carboniferous. Kansas. 
Augrusta limestone, Keyes. Iowa Geol. Surv., vol. i, pp. 59-71. 1893. 

Carboniferous. Iowa. Included in Mississippian series. Includes Warsaw shales 
and limestone, Keokuk, Upper and Lower Burlington limestones. Exact Syns. 
Burlington and Keokuk. Osage. Part. syn. Encrinital limestone. 
Augusta stage, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 76. 1894. 

Carboniferous. Missouri. Included in Lower Carboniferous. Includes Warsaw, 
Geode bed, Keokuk limestone, Upper Burlington and Lower Burlington 
limestone. 
Augusta limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 58-76. 1894. 

Carboniferous. Missouri. Included in Mississippian series. Exact Syn. Osage. 
Augusta stf^e, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Carboniferous. Missouri. Included in Lower Carboniferous. Includes Warsaw 
(in part), ** Geode bed," Keokuk limestone. Upper and Lower Burlington 
limestone. 
Augusta, Bain. Iowa Geol. Surv., vol. iv, pp. 275-277. 1895. 

Carboniferous. Iowa. Included in Mississippian series. 
Augusta, Bain. Am. Geol., vol. xv, p. 321. 1895. 

Carboniferous. Iowa. Included in Mississippian series. 
Augusta limestone, Keyes. Iowa Geol. Surv., vol. iii, pp. 340-345, 439-447. 1895. 
Carboniferous. Iowa. Included in Mississippian series. Includes Upper and 
Lower Burlington limestone, Keokuk limestone, Geode bed, Warsaw beds. 
Augusta, Bain. Iowa Geol. Surv., vol. v, pp. 140-143. 1896. 

Carboniferous. Iowa. Included in Mississippian series. 
Augusta, Keyes. Am. Geol., vol. xxi, pp. 229-235. 1898. 

Carboniferous. Mississippi Valley. Part. syn. Osage. 
Augusta limestone, Shepard. Mo. Geol. Surv., vol. xii, p. 100. 1898. 
Carboniferous. Missouri. Included in Augusta stage. Includes lower and upper 
Burlington limestone, Keokuk limestone, Geode bed, and Warsaw shales. 
Part. Syn. Osage. 
Augusta stage, Shepard. Mo. Geol. Surv., vol. xii, p. 49, 100. 1898. 
Carboniferous. Missouri. Includes Upper and Lower Burlington limestone. 



52 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Augusta limestone, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, pp. 31, 161. 1898. 

Carboniferous. Missouri. Inclmled in Augusta stage. 
Auriferous slate series, Diller. IT. S. Geol. Surv., 8th Ann. Kept., pt. i, p. 404. 
1889. 
California. 
Auriferous slate series, Lindgren and Turner. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 3. 1894. 
Carboniferous-Cretaceous. California. Inclmles Calaveras and Mariposa forma- 
tions. 
Auriferous slate series, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 5. 
1894. 
Carboniferous-Cretaceous. California. Includes Calaveras and Mariposa beds. 
Auriferous slate series, Turner. U. S. Geol. Surv., 14th Ann. Kept., pt. ii, p. 445. 
1894. 
California. Includes Grizzly, Calaveras, Robinson, Little Grizzly Creek beds, 
Juratrias, Cedar, Mineral King, and Mariposa formations. 
Auriferous River gravels, Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 465. 
1894. 
Included in Neocene. California. 
Auriferous gravels, Lindgren and Turner. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folios Nos. 3, 17. 1894, 1895. 
Tertiary. California. Included in Neocene. 
Auriferous gravel, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folios J^os. 5, 
29, 31. 1894-1896. 
Included in Neocene. California. 
Auriferous gravels. Turner. Am. Geol., vol. xv, p. 371. 1895. 

Tertiary. California. Included in Miocene? 
Auriferous gravel, Lindgren. Jour, of Geol., vol. iv, pp. 881-890. 1896. 

Tertiary. California. Included in Miocene? 
Auriferous slate series. Turner. U. S. Geol. Surv., 17th Ann. Rept., pt. i, pp. 621, 
659, 684. 1896. 
Juratrias. California. 
Auroral series, Rogers. Geol. of Pa., vol. i, pp. 105, 123-124, 208-245, 251-257 etseq., 
261; vol. ii, p. 752. 1858. 
Silurian. Pennsylvania. Includes Calciferous, Chazy, and Black River. 
Auroral, Prime. Am. Phil. Soc, Proc, vol. xvi, p. 249. 1877. 

Silurian. Pennsylvania. Exact Syn. Magnesian or No. II. 
Austin limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, pp. 583, 585. 1857. 

Cretaceous. Texas. 
Austin limestone, Marcou. Boston Soc. Nat. Hist., Proc, vol. viii, 1861-62, p. 89. 
1861. 
Cretaceous. Texas. Included in Upper Cretaceous. 
Austin limestone. White. Phil. Acad. Nat. Sci., Proc, 1887, p. 40. 1887. 
Cretaceous. Texas. Included in Gulf series. Exact Syn. Rotten limestone of 
Mississippi and upper part of Colorado. 
Austin chalk, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. xlvii. 1890. 

Cretaceous. Texas. Included in Black Prairie series. 
Austin-Dallas chalk. Hill. Texas Geol. Surv., 1st Ann. Rept., p. 112. 1890. 

Cretaceous. Texas. Included in Black Prairie series. ' 

Austin marble. Hill. Texas Geol. Surv., 1st Ann. Rept., pp. 127-128. 1890. 

Cretaceous. Texas. Included in Washita division of Comanche series. 
Austin formation. White. U. S. Geol. Surv., Bull., No. 82, p. 123. 1891. 

Cretaceous. Texas. 
Austin marble, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 343-344. 1892. 
Cretaceous. Texas. Included in Fredericksburg division of Lower Cretaceous. 



WEEKS] AUGUSTA BANGOR. 53 

Austin limestone, Taff. Texas GeoL Surv., 3d Ann. Kept., pp. 350-354. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Austin-Dallas chalk, Hill. Artesian Invest., Final Rept., 52d Cong., Ist seas., Ex. 
Doc. 41, pt. iii, p. 71. 1892. 

Cretaceous. Texas. 
Austin limestone, Taff. Texas Greol. Surv., 4th Ann. Rept., pp. 305-308. 1893. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Austin chalk, Hill. Geol. Soc. Am., Bull., vol. v, pp. 297-305. 1894. 

Cretaceous. Indian Territory and Texas. Included in Colorado division. 
Austin chalk. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 239. 
1898. 

Cretaceous. Texas. Included in Colorado division of Gulf series. 
Austin chalk, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 19. 1900. 

Cretaceous. Texas. 
Austin chalk, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 1900. 

Cretaceous. Texas. Included in Gulf series. 
Autocene, Perry. Boston Soc. Nat. Hist., Proc, vol. xv, 1872-73, p. 55. 1872. 

Tertiary. New England. 
Aux Vases sandstone, Keyes. Geol. Soc. Am., Bull., vol. iii, p. 296. 1892. 

Carboniferous. Missouri. Included in Kaskaskia limestone. Exact syn. Ferru- 
ginous sandstone. 
Aux Vases sandstone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 72, 76. 1894. 

Carboniferous. Missouri. Included in Kaskaskia stage. Exact syn. Ferruginous 
sandstone. 
Aux Vases limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Carboniferous. Missouri. Included in Kaskaskia stage. 
Avalon terrane, Walcott. Geol. Soc. Am., Bull., vol. x, p. 218. 1899. 

Algonkian. Newfoundland. Includes Signal Hill, Momable, Tarhay, and Con- 
ception. 
Avondale lunestone, Frazer. 2d Pa. Geol. Surv., Rept. C*, pp. 307, 321. 1883. 

Silurian. Pennsylvania. Included in Siluro-Cambrian. 
Baden sandstone, Wheeler. St. Louis Acad. Sei., Trans., vol. vii, p. 125. 1895. 

Carboniferous. Missouri. Exact Syn. Ferruginous sandstone of early writers. 
Bad Land group. Holmes. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., 
pp. 245, 248, 251. 1877. 

Cretaceous. Colorado. Exact Syn. Puerco marl. 
Badito formation, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Carboniferous? Colorado. 
Baird shale. Smith. Jour, of Geol., vol. ii, pp. 594-599. 1894. 

Carboniferous. California. Included in McCloud formation. 
Bakerstown sandstone, White. 2d Pa. Geol. Surv., Rept. Q, p. .'W. 1878. 

Carboniferous. Pennsylvania. 
Ballard, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 42. 1899. 

Cretaceous. Jamaica. Included in Blue Mountain series. 
Baltimorean, Uhler. Am. Phil Soc, Proc, vol. xxv, p. 48. 1888. 

Jurassic? Maryland. 
Baltimorean, Uhler. Md. Acad. Sci., Trans., vol. i, p. 45. 1889. 

Cretaceous. Maryland- Part. syn. Potomac (?). 
Banff series, McConnell. Can. Geol. Surv., new ser., vol. ii, pp. 15D, 17D-19D. 1887. 

Carboniferous. Canada. Included in Lower Carboniferous or possibly Upper 
Devonian. Includes Upper Banff shales. Upper Banff limestone. Lower Banff 
shales, Lower Banff limestone. Exact Syn. Banff limestone. 
Bangror limestone, Hayes. Geol. Soc Am., Bull., vol. ii, p. 143. 1890. 

Carboniferous. Alabama, Tennessee. Exact Syn. Mountain limestone. 



54 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Bangor limestone, Hayes. Ala. (Jeol. Surv., Bull., no. iv, p. 48. 1892. 

Carboniferous. Alabama. Included in Mississippian series. 
Bangor limestone, Hayes. U. S. (?eol. Rurv., Geol. Atlas of U. S., Folios Nos. 2, 4, 
6, 8, 19, 21, 22, 35. 1894-1896. 

Carboniferous. Georgia, Tennessee, Alabama. 
Bangor, McCalley. Ala. Geol. Surv., Rept. on Valley Regions of Ala., pt. i, pp. 27, 
43. 1896. 

Carboniferous. Alabama. Included in Ix)wer Carboniferous. 
Bangor limestone, McCalley. Ala. Geol. Surv., Rept. on Valley Regions, pt. ii, pp. 
53-54, 183-185, 246-249, 811-812. 1897. 

Carboniferous. Alabama. Included in Upper Sub-Carboniferous. 
Baptanodon, Marsh. Am. Jour. Sci., 4th sen, vol. ii, pp. 433-434. 1896. 

Jurassic. Wyoming. 
Baraboo quartzite. Van Hise. Int. Cong, of Geol., 5th sess., pi. xiv. 1893. 

Algonkian. Lake Superior region. Included in Huronian. 
Baraboo quartzite, Crosby. Geol. Soc. Am., Bull., vol. x, p. 162. 1899. 

Cambrian? Wisconsin. 
Baraboo quartzite, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Algonkian. Wisconsin. Included in Upper Huronian. 
Barachois slates, Fletcher. Can. Geol. Surv., Descriptive note on the Sydney Coal 
field, p. 5. 1900. 

Cambrian. Nova Scotia. 
Barbican, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 42. 1899. 

Pleistocene. Jamaica. Includeil in Coastal series. 
Bar Harbor series, Shaler. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 1047. 1889. 

Maine. 
Barker formation, Weed. U. S. Geol. Surv., Geol. Atlas of V. S., Folios Nos. 55, 56. 
1899. 

Cambrian. Montana. Part. syn. Flathead and Gallatin formations. 
Bame^at limestone, Mather. Geol. Surv. of N. Y., 2d Ann. Rept., pp. 168-169 
1838. 

New York. 
Bamegat limestone, Mather. Geol. of N. Y., pt. i, pp. 410-412. 1843. 

Silurian. New York. Included in Calciferous group. 
Barnstable series, Shaler. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, pp. 539-541. 
1898. 

Pleistocene? Massachusetts. Included in Cape Cod series. 
Barranca division, Dumble. Am. Inst. Mg. Engrs., Trans., vol. xxix, p. 139. 1900. 

Included in Trias. Mexico. 
Barree, White. 2d Pa. Geol. Surv., Rept. T^, pp. 132-133. 1885. 

Silurian. Pennsylvania. Exact. Syn. Niagara? 
Barree group, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 825-827. 1892. 

Silurian.- Pennsylvania. Included in No. v, Clinton. 
Barren group. Upper, Rogers. Geol. of Pa., vol. ii, p. 20 et seq. 1858. 

Carboniferous. Pennsy 1 vania. 
Barren group, Lower, Rogers. Geol. of Pa., vol. ii, p. 17 et. seq. 1858. 

Carboniferous. Pennsylvania. 
Barren limestone, Owen. Geol. Reconn. State of Indiana, Rept. (1837), p. 22. 1859. 

Indiana. 
Barren group, Killebrew and Safford. Resources of Tennessee, p. 40. 1874. 

Carboniferous. Tennessee. Included in Lower Carboniferous. 
Barren Coal Measures, Newberry. Ohio Geol. Surv., vol. ii, p. 155. 1874. 

Carboniferous. Ohio. Included in Lower Coal Mea^jures. 



WEEKS.] BANGOR BARREN. 55 

Barren group, Upper, Stevenson. Am. Phil. Soc, Proc, vol. xiv, p. 372. 1875. 

Carboniferous. West Virginia. Included in Coal Measures. 
Barren group, Lower, Stevenson. Am. Phil. Soc, Proc, vol. xiv, p. 391. 1875. 

Carboniferous. West Virginia. Included in Lower Carboniferous. 
Barren group, Upper, White. Lyceum of Nat. Hist, of N. Y., Annals, vol. xi, pp. 
46-^7. 1876. 

West Virginia, Pennsylvania. 
Barren Measures, Upper, Stevenson. 2d Pa. Geol. Surv., Rept. K, pp. 34-56. 1870. 

Carboniferous. Pennsylvania. Includes Washington and Green Counties groups. 
Barren series. Lower, Stevenson. 2d Pa. Geol. Surv., Rept. K, pp. 75-83. 1876. 

Carboniferous. Pennsylvania. Includes Morgantown sandstone, Birmingham 
shale. 
Barren series, Lower, White. 2d Pa. Geol. Surv., Rept. A^, pp. 23-26. 1877. 

Carboniferous. Pennsylvania. 
Barren series. Upper, Stevenson. 2d Pa. Geol. Surv., Rept. K'-', pp. 25-29. 1877. 

Carboniferous. Pennsylvania. 
Barren series, Lower, Stevenson. 2d Pa. Geol. Surv., Rept. K^, pp. 64-72. 1877. 

Carboniferous. Pennsylvania. Includes Barton group. 
Barren Measures, Lower, Newberry. Ohio Geol. Surv., vol. iii, p. 723. 1878. 

Carboniferous. Ohio. Included in Coal Measures. 
Barren Measures, Piatt. 2d Pa. Geol. Surv., Rept. H*, pp. 167-174. 1878. 

Carboniferous. Pennsylvania. 
Barren series. Lower, Stevenson. 2d Pa. Geol. Surv., Rept. K^, pp. 18-26. 1878. 

Carboniferous. Pennsylvania. 
Barren Group, Lower, Stevenson. Ohio Geol. Surv., vol. iii, pp. 203,221. 1878. 

Carboniferous. Ohio. Included in Coal Measures. 
Barren series. Lower, White. 2d Pa. Geol. Surv., Rept. Q, pp. 23-38. 1878. 

Carboniferous. Pennsylvania. Includes Pittsburg limestone, Morgantawn sand- 
stone. Elk Lick limestone, Pine Creek limestone, Buffalo sandstone. Brush 
Creek limestone. 
Barren Measures, Chance. 2d Pa. Geol. Surv., Rept. V, pp. 13-15. 1879. 

Carboniferous. Pennsylvania. 
Barren Measures, Piatt. 2d Pa. Geol. Surv., Rept. H^ p. 311. 1880. 

Carboniferous. Pennsylvania. 
Barren group, Upper, Stevenson. The Virginias, vol. ii, p. 70. 1881. 

Carboniferous. West Virginia. Included in Coal Measures. 
Barren group, Ix>wer, Stevenson. The Virginias, vol. ii, pp. 98, 122. 1881. 

Carboniferous. West Virginia. 
Barren Measures, Lower, Piatt. 2d Pa. Geol. Surv., Rept. H^, pp. xxviii-xxix. 
1881. 

Carboniferous. Pennsylvania. 
Barren Coal Measures, White. 2d Pa. Geol. Surv., Rept. T"*, pp. 48 et seq. 1885. 

Carboniferous. Pennsylvania. 
Barren Measures, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept. 1885, pp. 177-181. 
1886. 

Carboniferous. Pennsylvania. Includes Connellsville and Morgantown sandstones. 
Crinoidal limestone No. 19. 
Barren Measures, D'lnviUiers. 2d Pa. Geol. Surv., Ann. Rept. 1886, pp. 74-79, 208, 
265, 295-296. 1887. 

Carboniferous. Pennsylvania. Exact Syn. Pittsburg series. 
Barren Measures, Upper, D'lnviUiers. 2d Pa. Geol. Surv., Ann. Rept. 1886, pp. 
58-63, 202-206, 262-263, 234-336. 1887. 

Carboniferous. Pennsylvania. Includes Green County grouj) and Washington 
County group. 



56 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Barren Measures, Tapper, Oarll. 2d Pa. Geol. Surv., Rept. I**, p. 122. 1890. 

Carboniferous. Pennsylvania. Exact Syn. Washington County group. 
Barren Measures, Lower, Carll. 2(1 Pa. (Teoi. Surv., Rept. 1^ pp. 123-125. 1890. 

Includes Crinoidal limestone = Ames limestone of Ohio and West Virginia. Exact 
Syn. Pitteburg series. 
Barren Measures, White. U. S. Geol. Surv., Bull., No. 65, p. 70. 1891. 

Carboniferous. Ohio, Pennsylvania, West Virginia. Exact Syn. Elk River series. 
Barren Measures, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 
2406-2447. 1895. 

Carboniferous. Pennsylvania. Exact Syn. No. xiv, Pittsburg series, VAk River 
series of West Virginia, 
Barren Measures, Upper, D'Invilliers. 2(1 Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, 
pp. 2565-2588. 1895. 

Carboniferous. Pennsylvania. Includes Green County group, Washington County 
group. 

Exact Syns. No. xvi, Permo-Carboniferoua or Dunkard Creek series. 
Barrett shales, Jenney. U. S. Geol. Surv., 19th Ann. Rept., pt. ii, pp. 568-587, 
593. 1899. 

Cretaceous. South Dakota. Included in Dakota group. 
Barrett shales. Ward. U. S. Geol. Surv., 19th Ann. Rept., pt. ii, p. 593. 1899. 

Cretaceous. South Dakota. 
Barringrton clays, Woodworth. U. S. Geol. Surv., 17th Ann. Rept. pt. i, p. 987. 
1896. 

Pleistocene. Rhode Island. 
Bartletts Island series, Shaler. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 1038. 
1889. 

Maine. 
Barton group, Stevenson. 2d Pa. Geol. Surv., Rept. K'^, pp. 67-68. 1877. 

Carboniferous. Pennsylvania. Included in Lower Barren series. 
Basal clays, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, pp. xli-xliv. 1890. 

Tertiary. Texas. Included in Eocene. 
Bashi deposit, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 140, 144. 1884. 

Tertiary. Alabama. Included in Eocene. Exact Syn. Eolignitic. 
Bashi series. Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 43. 1887. 

Tertiary. Alabama. Included in Lignitic or Lower Eocene. Exact syn. Wocxis 
Bluff series. 
Bashi,. Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 596. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Bashi series, Langdon. Ga. Geol. Surv., 1st Rept. of Prog., p. 96. 1891. 

Tertiary. Georgia. Exact syn. Woods Bluff series. 
Bashi division, Spencer. Geol. Surv. Ga., Ist Rept. of Prog., 1890-91. 1891. 

Tertiary. Georgia. Included in Lignitic. 
Bashi series, Dall. U. S. Geol. Surv., 18th Ann. Rept, pt. ii, p. 345. 1898. 

Tertiary. Alabama. Included in Eocene. Exact Syn. Woods Bluff series. 
Bastard limestone, White. 2d Pa. Geol. Surv., Rept. G', pp. 97-98. 1883. 

Silurian. Pennsylvania. Included in Lower Helderberg, or No. VI. 
Bastard limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 948. 1892. 

Silurian. Pennsylvania. Included in No. VI. Stormville series. 
Bates Hole formation, Smith. Jour, of Geol., vol. viii, p. 456. 1900. 

Tertiary. Wyoming. Included in Eocene. 
Batesville sandstone, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 49-53, 149. 1888. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Batesville sandstone, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 139, 140. 1890. 

Carboniferous. Arkansas. Included in Mississippian series. Osage group. 



WEEKS] BARREN BEADE. 57 

Batesville ash-bed, Williams. Ark. Geol. Surv., 1890, vol. ii, pp. 373-375. 1890. 

Arkansas. 
Batesville sandstone, Simonds and Hopkins. Ark, Geol. Surv., 1891, vol. ii, pp. 51- 
55. 1891. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Batesville sandstone, Williams. Ark. Geol. Surv., Ann. Rept. for 1892, pp. 355-358. 
1900. 

Carboniferous. Arkansas. 
Baucari division, Dumble. Am. Inst. Mg. Engrs., Trans., vol. xxix, p. 126. 1900. 

Tertiary. Mexico. 
Bay shot sand, Eaton. Am. Jour. Sci., 1st ser., vol. xii, p. 18. 1826. 
Bayard, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 
1896. 

Carboniferous. West Virginia, Maryland. 
Bayard, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Carboniferous. Maryland. Included in Coal Measures. 
Bayard formation, Clark. Md. Geol. Surv., vol. i, p. 186. 1897. 

Carboniferous. Maryland. 
Bayard, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Carboniferous. Maryland. 
Bayou Chicot limestone, Harris and Veatch. La. State Exp. Station, pt. v, p. 61. 
1899. 

Cretaceous. Louisiana. Included in Ripley stage. 
Bays sandstone, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 176. 1894. 

Silurian. Virginia. Included in Medina. 
Bays sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 12, 
26. 1894, 1896. 

Silurian. Kentucky, Virginia, Tennessee. 
Bays sandstone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25, 27. 
1895, 1896. 

Silurian. Tennessee, North Carolina. 
Bays limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 1896. 

Silurian. Tennessee. Exact Syn. Bays sandstone of Loudon folio. Part. Syns. 
Chickamauga limestone of Kingston folio; Trenton and Nashville group of 
Safford. 
Bays sandstone, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 44. 1897. 

Silurian. Virginia, West Virginia. 
Bays sandstone, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 59. 1899. 

Silurian. Virginia, Tennessee. 
Beacon Hill, Salisbury. N. J. Geol. Surv., Rept. 1893, pp. 47-57, 67-72. 1894. 

Pleistocene. New Jersey. Included in Yellow gravel. 
Beacon Hill formation, Salisbury. N. J. State Geol., Ann. Rept. 1894, pp. 99-104. 
1895. 

Tertiary. New Jersey. Included in Miocene. 
Beacon Hill formation, Salisbury. Geol. Soc. Am., Bull., vol. vi, p. 483. 1895. 

Tertiary. New Jersey. Included in Yellow gravel; Miocene? 
Beacon Hill formation, Salisbury. N. J. Geol. Surv., Rept. 1895, pp. 3-7. 1896. 

Tertiary. New Jersey. Included in Miocene. 
Beacon Hill formation, Salisbury. N. J. Geol. Surv., Rept. 1896, pp. 13-15. 1897. 

New Jersey. 
Beacon Hill formation, Salisbury. N. J. Geol. Surv., Rept. 1897, pp. 11-13. 1898. 

New Jersey. 
Beade MoTintain bed, Drake. Texas Geol. Surv., 4th Ann. Rept, p. 426. 1893. 

Carboniferous. Texas. Included in Albany division. 



58 NORTH AMERICAN GEOLOGIC FORMATION NAMEfl. [bull. 191. 

Bear Biver, Cope. U. 8. Geol. and Geog. Surv. of Terr., 1873, p. 439. 1874. 

Cretaceous or Tertiary. I'tah. Exact Syn. Green River. 
Bear Riv^er group, Cope. U. S. Geol. and Geog. Surv. of Terr., Bull., No. 2, p. 13. 
1874. 
Cretaceous. Wyoming. 
Bear River group, Cope. V, S. Geol. and Geog. Sur\\ of Terr., Mon., vol. ii, pp. 
36-40. 1875. 
Cretaceous. Wyoming. 
Bear River group, Peale. U. S. Geol. and Geog. Surv. of Terr., SJh Ann. Rept., p. 
144. 1876. 
Tertiary. Colorado. 
Bear River beds. Bowman, Can. Geol. Surv., new ser., vol. iii, pt. i, pp. 20C-22C. 
1889. 
British Columbia. Included in Upper Paleozoic. Includes Bear River limestone 
and Cherty series. 
Bear River formation, Stanton. Am. Jour. Sci., 3d ser., vol. xliii, pp. 98-115. 1892. 

Cretaceous. Utah, Wyoming. 
Bear River formation, White. Am. Jour. Sci., 3d ser., vol. xliii, pp. 91-97. 1892. 

Cretaceous. Utah, Wyoming. Exact Syn. Bear River Laramie. 
Bear River, White. U. S. Geol. Sur\ ., Bull., No. 128. 1895. 

Cretaceous. Utah, Idaho, Wyoming. 
Beaxwallow conglomerate, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 44. 1897. 
Carboniferous. Virginia, West Virginia. Part. Syns. No. xii, Great conglomerate 
of Rogers. 
Beaulxamois formation. Chapman. Can. Inst., new ser., vol. viii, pp. 186-190. 
1863. 
Cambrian. Canada. Included in Potsdam group. "Lower Silurian.*' 
Beaver division, Comstock. Texas Geol. Surv., 1st Ann. Rept., p. 295. 1890. 

Silurian. Texas. Included in Leon series. 
Beaver limestone, Hayes. Geol. Soc. Am., Bull., vol. v, p. 467. 1894. 

Cambrian. Tennessee and Georgia. Included in Lower Cambrian. 
Beaver limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio -o. 16. 
1895. 
Cambrian. Tennessee, North Carolina. 
Beaver Biver group. White. 2d Pa. Geol. Surv., Rept. Q, pp. 65-71. 1878. 
Carboniferous. Pennsylvania. Includes Homewood sandstone, Mercer limestone, 
Connoquenessing sandstone, and Sharon shales. 
Beaver River series. Chance. 2d Pa. Geol. Surv., Rept. V, p. 221 et seq. 1879. 

Carboniferous. Pennsylvania. 
Beaver River group, D'lnvilliers. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. i, 
p. 1912. 1895. 
Carboniferous. Pennsylvania. Included in No. xii, Pottsville conglomerate. 
Beavertown marl, Foerste. Denison Univ. Sci. Lab., Bull., vol. i, p. 65. 1885. 

Ohio. 
Beavertown marl, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 4. 1888. 

Ohio. 
Beavertown marl, Orton. Ohio Geol. Surv., vol. vii, p. 56. 1893. 

Silurian. Ohio. 
Becket gneiss, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Cambrian. Massachusetts. Part Syn. Stock bridge limestone. 
Beckett conglomerate, Emerson. Geol. Sch\ Am., Bull., vol. vii, p. 5. 1895. 
Cambrian. Massachusetts. 



WEEKS.] BEAR BEDFORD. 59 

Becket gneiss, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 1898. 

Cambrian. Massachusetts. 
Becket conglomerate gneiss, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 31-37. 
1898. 

Cambrian. Massachusetts. Included in Lower Cambrian. 
Becraft limestone, Darton. N. Y. State Geol., 13th Ann. Kept., pp. 245-246, 304. 
1894. 

Silurian. New York. Included in Lower Helderberg. 
Becraft limestone, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 
1899. 

Devonian. New York. Included in Helderbergian. 
Becraft limestone, Weller. N. J. Geol. Surv., Kept. 1899, p. 39. 1900. 

Devonian. New Jersey. 
Bedford rock, Owen. Geol. Reconn. Indiana, Rept. 1859-60, p. 137. 1862. 

Carboniferous. Indiana. 
Bedford shale, Newberry. Ohio Geol. Surv., Rept. 1869, p. 22. 1871. 

Carboniferous. Ohio. Included in Waverly group. 
Bedford shales, Reid. Ohio Geol. Surv., Rept. Prog. 1870, p. 469. 1871. 

Ohio. 
Bedford shale. Read. Ohio Geol. Surv., vol. i, pt. i, pp. 485, 508, 514, 525. 1873. 

Carboniferous. Ohio. 
Bedford stone, Collett. Indiana Geol. Surv., 5th Ann. Rept. for 1873, pp. 276, 280, 
283. 1874. 

Indiana. 
Bedford shale, Newberry. Ohio Geol. Surv., vol. ii, pp. 90-92, 188, 212. 1874. 

Carboniferous. Ohio. Included in Waverly. Lower Carboniferous. 
Bedford shale, Winchell. Ohio Geol. Surv., vol. ii, pp. 241, 263. .1874. 

Carboniferous. Ohio. 
Bedford shale, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 73-74. 1875. 

Carboniferous. Pennsylvania and Ohio. Exact Syn. No. ix? 
Bedford shale, Orton. Rev. of Strat. Geol. of East. Ohio, p. 4. 1880. 

Carboniferous. Ohio. 
Bedford shale, Orton. Ohio Geol. Surv., Prelim. Rept. Petroleum and Inflammable 
Gas, p. 25. 1886. 

Ohio. Included in Waverly series. 
Bedford shale, Orton. Ohio Geol. Surv., vol. vi, pp. 3,33. 1888. 

Carboniferous. Ohio. Included in Waverly group. 
Bedford shale, Herrick. Denison Univ. Sci., Lab. Bull., vol. iv^ pp. 101, 106. 1888. 

Ohio. 
Bedford shale. Cooper. Denison Univ. Sci. Lab., Bull., vol. v, p. 25. 1890. 

Ohio. Included in Waverly group. 
Bedford shale, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 34-35. 
1890. 

Carboniferous. Ohio. Included in Waverly group. 
Bedford shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 27. 1893. 

Carboniferous. Ohio. Included in Waverly group. 
Bedford oolitic limestone, Hopkins and Siebenthal. Indiana Dept. Geol. and Nat. 
Res., 2l8tAnn. Rpt. (1896), p. 291. 1897. 

Carboniferous. Indiana. Exact Syns. Indiana oolitic limestone, Spergen Hill 
limestone. White River stone. 
Bedford oolitic stone, Blatchley. Indiana Dept. Geol. and Nat. Res., 21st Ann. Rept. 
(1896), p. 14. 1897. 



fiO NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Bedford oolitic limestone, Blatchley. Indiana Dept. Geol. and Nat. Kef., 22d Ann. 
Kept. (1897), pp. 14, 20. 1898. 
CarlwniferouH. Indiana. 
Bedford oolitic limestone, Ashley. Indiana Dept. (ieol. and Nat Res., 23d Ann. 
Kept. (1898), p. 79. 1899.* 
Carboniferous. Indiana. 
Bed Rock series, Lindgren. U. S. (ieol. Surv., (ieol. Atlas of U. S., Folio No. 31. 
1896. 
0arl)oniferon8. California. Includes Calaveras formation. 
Be<l Rock series, Turner and Ransome. U, S. (Ieol. Surv., Geol. Atlas of U. S., 
Folio No. 41. 1897. 
Carboniferous. California. Includes Calaveras and Mariposa formations. 
Bed Rock series. Turner. U. S. Geol. Surv., Geol. Atlai? of U. S., Folio No. 37. 
1897. 
Carboniferous and older. California. Includes Calaveras and Robinson forma- 
tions. 
Bed Rock series, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 39. 
1897. 
Carboniferous and Juratrias. California. Includes Calaveras and Sailor Canyon 
formations. 
Bed Rock series, Turner. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 43. 
1898. 
Juratrias and older. California. Includes Calaveras and C'edar formations. 
Bed Rock series. Turner and Ransome. IT. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 51 . 1898. 
Carboniferous. California. Includes Calaveras. 
Bed Rock series, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 66. 1900. 

California. Includes Mariposa, Sailor Canyon, and Calaveras formations. 
Beekmantown limestone, Clarke and Schuchert. Science, new ser., vol. x, pp. 
876-877. 1899. 
Silurian. New York. Included in Canadian. 
Bee Spring" sandstone, Moore. Ky. Geol. Surv., new ser., vol. ii, pp. 105-106. 1877. 

Carboniferous. Kentucky. Included in Coal Measures. 
Belfast bed, Foerste. Cin. Soc. Nat. Hist., Jour., vol. xviii, nos. 3 and 4, pp. 161, 
190. 1896. 
Silurian. Ohio. Included in Lower Silurian. 
Belfast bed, Foerste. Ind. Dept. Geol. and Nat. Hist., 24th Ann. Rept., pp. 67-68. 
1900. 
Silurian. Ohio. Included in Middle Silurian. 
Belle Isle shale, Jukes. Gen. Rept. on Geol. of Newfoundland, pp. 51 etseq. 1843. 

Cambrian? Newfoundland. 
Bellowspipe quartzite, Dale. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, pi. Ixxi. 
1894. 
Silurian. Massachusetts. 
Bellowspipe limestone, Pumpelly, Wolff, and Dale. U. S. Geol. Surv., Mon., vol. 
xxiii, pp. 20, 180, 184-186. 1894. 
Silurian. Massachusetts. 
Bell's Landing" group, Aldrich. Ala. Geol. Surv., Bull., No. 1, p. 54. 1886. * 

Tertiary. Alabama. 
Bell's Landing series, Smith and Johnson. IT. S. Geol. Surv., Bull., No. 43, p. 46. 
1887. 
Tertiary. Alabama. Included in Lignitic; Lower Eocene. 
Bell's Landing, Langdon. Geol. Soc. Am., Bull., vol. ii, p. 588. 1891. 
Tertiary. Alabama. Included in Lower Eocene. 



WEEKS.] BEDFORD BEND. 61 

Beirs Landing, Clark. U. S. Geol. Surv., Bull., No. 141, p. 57. 18%v 

Tertiary. Alabama. Included in Eocene. 
Bellton coal erroup, White. U. S. Geol. Surv., Bull., No. 65, p. 32. 1891. 

Carboniferous. West Virginia, Pennsylvania. Included in Perrao-Carboniferous; 
Dunkard Creek series. Includes Nineveh, Dunkard, and JoUytown coals. 
Bellvale Flags, Darton. Geol. Soc. Am., Bull., vol. v, pp. 367, 373. 1894. 

Devonian. New Jersey. 
Bellvale flags, Ries. N. Y. State Geol., 15th Ann. Rept., vol. i, p. 404. 1897. 

Devonian. New York. 
Belly River series, Dawson. Can. Geol. Surv., Rept. 1882-^3-84, pp. 37C-126C. 
1885. 

Cretaceous. Canada. 
Belly River series, McConnell. Can. G«ol. Surv., new ser., vol. i, pp. 63C-65C. 
1886. 

Cretaceous. Canada. 
Belly River series, Tyrrell. Can. Geol. Surv., new ser., vol. ii, 90E-129E. 1887. 

Cretaceous. Canada. 
Belly River formation. White. U. S. GeoL Surv., Bull., No. 82, p. 173. 1891. 

Cretaceous. Rocky Mountains. 
Beloit formation, Sardeson. Am. Geol., vol. xix, pp. 24,26-29. 1897. 

Silurian. Mississippi Valley. Included in Lower Silurian. Includes Fucoid, 
Stictopora, Stictoporella, Bellerophon, and Buff limestone beds. 
Belt, Peale. U. S. Geol. Surv., Bull., No. 110, p. 16. 1893. 

Algonkian. Montana. 
Belt beds, Iddings and Weed. U.S. Geol. Surv., Geol. Atlas of U. S., Folio No. 1. 
1894. 

Algonkian. Montana. 
Belt, Peale. U. S. Geol. fJurv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Algonkian. Montana. 
Belt beds, Weed and Pirsson. V. S. Geol. Surv., Bull., No. 139, p. 32. 1896. 

Algonkian. Montana. 
Belt formation, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 56. 1899. 

Algonkian. Montana. 
Belt terrane. Weed. U. S. Geol. Surv., GeoL Atlas of U. S., FoHo No. 56. 1899. 

Algonkian. Montana. Includes Neihart quartzite and Belt formation. 
Belt terrane, Walcott. Geol. Soc. Am., Bull., vol. x, pp. 199, 201. 1899. 

Alwnkian? Pre-Cambrian. Montana. 
Belt terrane, Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, pp. 279-283. 1900. 

Algonkian. Montana. Includes Neihart quartzite, Chamberlain shale, Newland 
limestone. Grey son shale, and Spokane shale. 
Belva shale, Stevenson. N. Y. Acad. Sci., Trans., vol. xv., p. 51. 1896. 

Carboniferous. Arkansas. Included in Sebastian stage. 
Belvidere shales. Hill. Am. Jour. Sci., 3d ser., vol. 1, pp. 208-234. 1895. 

Cretaceous. Kansas, Oklahoma, New Mexico. Included in Comanche series. 
Belvidere beds, Cragin. Am. Geol., vol. xvi, p. 357. 1895. 

Cretaceous. Kansas. Includes Kiowa shales, Champion shell bed, Cheyenne 
sandstone. 
Bend, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, pp. Ixiii-lxv. 1890. 

Carboniferous. Texas. Included in Lower Carboniferous. 
Bend formation, Cummins. Texas Geol. Surv., 2d Ann. Rept., pp. 360-367, 372. 
1891. 

Carboniferous. Texas. Included in Coal Measures. 
Bend formation, Smith. Jour, of Geol., vol. ii, pp. 611-612. 1894. 

Juratrias. California. 



62 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Bend, Diller. U. S. Oeol. Surv., Geol. Atlas of U. 8., Folio No. 15. 1896. 

Juratrias. California. 
Benezette limestone, Ashburner. 2d Pa. Geol. Surv., Rept. R', p. 105. 1885. 

Carboniferous. Pennsylvania. Included in Pocono. 
Benton shale, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 1894. 

Cretaceous. Colorado^ 
Benton, Bain. Iowa Geol. Surv., vol. iii, pp. 101-114. 1895. 

Cretaceous. Iowa. 
Benton, Emmons, Cross, and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, p. 65. 
1896. 

Cretaceous. Colorado. Included in Colorado group. 
Benton group, Gill)ert. IT. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 564. 1896. 

Cretaceous. Colorado. Includes Carlile shale. Greenhorn limestone, and Grane- 
ros shale. 
Benton formation, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 

Cretaceous. Colorado. Includes Graneros shale. Greenhorn limestone, and Car- 
lile shale. 
Benton, Logan. Kan. Univ. Geol. Surv., vol. ii, pp. 215-219. 1897. 

Cretaceous. Kansas. Included in Upper Cretaceous. 
Benton, Adams. Kan. Univ. Geol. Surv., vol. iv, p. 27. 1898. 

Cretaceous. Kansas. Included in Upper Cretaceous. Includes Upper and Lower 
groups. 
Benton formation. Weed. U. 8. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 482-484. 
1898. 

Cretaceous. Montana. Included in Upper Cretaceous. 
Benton shale. Wilder. Iowa Geol. Surv., vol. x, p. 111. 1900. 

Cretaceous. Iowa. 
Berea grit, Newberry. Ohio Geol. Surv., Rept. Prog. 1869, pp. 21, 22, 29. 1870. 

Carboniferous. Ohio. Included in Waverly group. 
Berea grit, Newberry. Ohio (ieol. Surv. (for 1869), p. 22. 1871. 

Carboniferous. Ohio. Included in Waverly group. 
Berea grit. Read. Ohio Geol. Surv., Rept. Prog. 1870, p. 468. 1871. 

Ohio. 
Berea grit, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 186, 209. 1873. 

Carboniferous. Ohio. Included in Waverly. 
Berea grit. Read. Ohio Geol. Surv., vol. i, pt. i, pp. 483, 504, 512, 523. 1873. 

Carboniferous. Ohio. 
Berea grit, Newberry. Ohio Geol. Surv., vol. ii, pp. 88, 90, 211. 1874. 

Carboniferous. Ohio. Included in Waverly, Lower Carboniferous. 
Berea grit, Winchell. Ohio Geol. Surv., vol. ii, pp. 240, 259, 280. 1874. 

Carboniferous. Ohio. 
Berea grit, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 69-72. 1875. 

Carboniferous. Pennsylvania and Ohio. Exact Syn. No. X. 
Berea grit, Niles. Boston Soc. Nat. Hist., Proc, vol. xviii, 1875-76, p. 273. 1876. 

Ohio. Included in Waverly group. 
Berea grit, Read. Ohio Geol. Surv., vol. iii, p. 301. 1878. 

Carboniferous. Ohio. Included in Waverly. 
Berea grit, Orton. Rev. of Strat, Oeol. of East. Ohio, p. 5. 1880. 

Carboniferous. Ohio. 
Berea grit, Orton. Am. Assoc. Adv. Sci., Proc, vol. xxx, pp. 167-174. 1882. 

Carboniferous. Ohio. Included in Waverly. 
Berea grit, Orton. Ohio Geol. Surv., Prelim. Rept. Petroleum and Inflammable 
Gas, pp. 25, 54. 1886. 

Ohio. Included in Waverly series. 



WEEKS.] BEND BERTRAM. 63 

Bereagrit, Gushing. Am. Assoc. Adv. Sci., Proc, vol. xxxvi, pp. 213-215. 1888. 

Carboniferous. Ohio. Included in Waverly. 
Berea grit, Orton. Ohio Geol. Surv., vol. vi, pp. 3, 35. 1888. 

Carboniferous. Ohio. Included in Waverly group. 
Berea series, Herrick. Denison Univ. Sci. Lab., Bull., vol. iv, p. 106. 1888. 

Ohio. Includes Waverly shale, Berea shale, Berea grit, Bedford shale, Cleveland 
shale. 
Berea shale, Orton. Ohio Geol. Surv., vol. vi, pp. 3, 36. 1888. 

Carboniferous. Ohio. Included in Waverly group. Exact Syn. Waverly black 
slate. 
Berea grit, Carll. 2d Pa. Geol. Surv., Kept. I^ pp. 97-104. 1890. 

Carboniferous. Ohio, Pennsylvania. Included in Pocono. 
Berea grit and shale, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 
35-37, 249-258. 1890. 
Carboniferous. Ohio. Part Syn. Corry sandstone ( Pa. ) . 
Berea grit, Cooper. Denison Univ. Sci. Lab., Bull., vol. v, p. 25. 1890. 

Ohio. Included in Waverly group. 
Berea shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 30. 1893. 

Carboniferous. Ohio. Included in Waverly group. 
Bereagrit, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 28. 1893. 

Carboniferous. Ohio. Included in Waverly group. 
Berkshire limestone, Hitchcock. Mass. Geol. Surv. Rept., p. 297 (2d ed., p. 296); 
also Econ. Geol. Rept., 1838, p. 71. 1833. 
Massachusetts. 
Berkshire limestone, Hitchcock. Geol. of Mass., Final Rept., pp. 567-587. 1841. 

Massachusetts. 
Berkshire County series, Crosby. Rept. on Geol. Map of Mass., p. 40. 1876. 
Massachusetts. Included in Pre-Cambrian. Includes Eolian limestone, Taconic 
slate, etc. 
Berkshire schist. Dale. U. S. Geol. Surv., l^th Ann. Rept., pt. ii, p. 303. 1893. 

Silurian. New York. 
Berkshire schist, Dale. U. S. Geol. Surv., 14th Ann. Rept, pt. ii, pis. 67, 69, 71. 
1894. 
Silurian. Vermont, Massachusetts. 
Berkshire schist, Pumpelly, Wolff, and Dale. U. S. Geol. Surv., Mon., vol. xxiii, 
pp. 15, 16, 20, 179, 182-184. 1894. 
Silurian. Massachusetts. 
Berkshire schist, Dale. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 15-23. 1900. 

Silurian. Vermont. Included in Ordovician. 
Bemardston series, Emerson. L^. S. Geol. Surv., Mon., vol. xxix, pp. 253-296. 
1890. 
Devonian. Massachusetts. 
Bemardston series, Emerson. Am. Jour. Sci., 3d ser., vol. xl, pp. 263-275, 362-374. 
1890. 
Devonian. Massachusetts, Vermont. 
Bemardston series, Emerson. U. S. Geol. Sarv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Devonian. Massachusetts. 
Bertie dolomite, Chapman. A Popular and Practical Exposition of the Minerals 
and Geol. of Can., p. 190. 1864. 
Silurian. Canada. Includes Water lime and Tentaculite. Exact Syn. Cayuga 
dolomite. 
Bertram beds, Norton. Iowa Geol. Surv., vol. iv, pp. 135-138. 1895. 
Silurian. Iowa. 



64 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Bertram stage, Calvin. Iowa (leol. 8urv., vol. v, p. 60. 1896. 

Silurian. Iowa. Included in Niagara series. 
Bethany Fcklls limestone, Broadhead. St. Louis Acad. Sii. Trans., vol. ii, p. 320. 
1868. 

Carboniferous. Indiana. 
Bethany limestone, Broadhead. Mo. Geol. Surv., Kept. 1873-74, p. 317. 1874. 

Carboniferous. Missouri. Included in Coal Measures. 
Bethany Falls limestone, Keyes. Mo. Geol. Surv., vol. iv, p. 82, 1894. 

Carboniferous. Missouri. Included in Missourian. Exact Syn. Winterset lime- 
stone. 
Bethany Falls lime8tf)ne, Broadhead. Mo. Geol. Surv., vol. viii, p. 374. 1895. 

Carboniferous. Missouri. Included in Upper Coal Measures. 
Bethany, Keyes. Am. Jour. Sci., 4th ser., vol. ii, pp. 221, 225. 1896. 

Carboniferous. Missouri, Iowa, Kansas. Included in Tapper Coal Measures. 
Exact Syns. Winterset, Erie or Triple limestone. 
Bethany Falls limestone, Ilaworth. Kan. Univ. Geol. Surv., vol. i, p. 157. 1896. 

Carboniferous. Kansas. 
Bethany limestone, Tilton and Bain. Iowa (tcoI. Surv., vol. vii, pp. 509-520. 1897. 

Carboniferous. Iowa. In(!luded in Missourian formation. Includes Earlham 
limestone; Winterset limestcme. 
Bethany limestone, Ilaworth. Kan. Univ. Geol. Surv., vol. iii, pp. 102-103. 1898. 

Carboniferous. Kansas. Includes Erie, lola, and Garnett limestone. 
Bethany limestone, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, pp. 211, 215. 1898. 

Carboniferous. Missouri. Included in Missourian series. 
Bethany Falls limestone, Gallager. Mo. Geol. Surv. Bien. Rept., p. 45. 1898. 

Carboniferous. Missouri. Included in Middle Coal Measures. 
Bethany limestone. Bain. Am. Jour. Sci., 4th ser., vol. v, pp. 433-439. 1898. 

Carboniferous. Missouri. Included in Missourian series. Includes Westerville? 
Dekalb, Winterset, Earlham, and Fragmental. 
Bethany limestone. Bain. Iowa Geol. Surv., vol. viii, pp. 272-282. 1898. 

Carboniferous. Iowa. Included in Missourian series. Includes Earlham and 
Winterset limestones; Dekalb limestone. 
Bethany limestone, Keyes. Am. Geol., vol. xxiii, p. 304. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Bethany limestone, Keyes. Iowa Acad. Sci., Proc, vol. vii, p. 86. 1900. 

Carboniferous. Mississippi valley. Included in Coal Measures. 
Battles series, Schrader. U. S. Geol. Surv., 21st Ann. Rept., pt. ii, p. 475. 1900. 

Alaska. 
BeulaJi shales, Darton. Geol. Soc. Am., Bull., vol. xi, p. 393. 1899. 

Cretaceous. Black Hills. 
Beulali clays, Jenney. U. S. Geol. Surv., 19th Ann. Rept., pt. ii, pp. 568-587, 593. 
1899. 

Cretaceous. South Dakota. Included in Dakota group. 
Beulah clays, Ward. U. S. Geol. Surv., 19th Ann. Rept., pt. ii, p. 593. 1899. 

Cretaceous. South Dakota. 
Bevier fire clay, Wheeler. Mo. Geol. Surv., vol. ii, p. 57. 1893. 

Carboniferous. Missouri. Included in Lower Coal Measures. 
Bicknell sandstone, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Jurassic. California. Included in Callovian. 
Bicknell sandstone, Hyatt. Geol. Soc. Am., Bull., vol. v, p. 413. 1894. 

Jurassic. California. Included in Callovian. 
Big Basin sandstone, Cragin. Colo. College Stud., vol. vi, pp. 3, 7. 1896. 

Permian. Kansas. Included in Flint Hills division of Big Blue series. 



WEKK8.] BERTRAM BIRDSEYE. 65 

Big Basin sandstone, Cragin. Colo. College Stud., vol. vi, pp. 3, 46. 1896. 

Permian. Kansas. Included in Cimarron series. 
Big Basin sandstone, Proseer. Kan. Univ. Geol. Surv., vol. ii, p. 94. 1897. 

Permian? Kansas. Included in Cimarron series. 
Bi^ Blue series, Cragin. Colo. College Stud., vol. vi, pp. 3, 5. 18d6. 
Permian. Kansas. Includes Smnmer division above and Flint Hills below. Four 
formations. 
Big Blue beds, Grimsley. Greol. Soc. Am., Bull., vol. viii, p. 228. 1897. 

Permian. Kansas. 
Big Clifty sandstone, Norwood. Ky. Geol. Surv., new ser., vol. i, p. 369. 1876. 
Carboniferous. Kentucky. Included in Chester group. Exact Syn. T&r Spring 
sandstone. 
Big Deciper calcareous sandstone. Hill. Ark. Greol. Surv., 1888, vol. ii, pp. 77-79. 
1888. 
Cretaceous. Arkansas. Included in Upper Arenaceous beds. 
Big Injiiii sandstone. White. Geol. Soc. Am., Bull., vol. x, p. 279. 1899. 

Carboniferous. West Virginia. Included in Pocono. 
Big Valley beds, Drake. Texas Geol. Surv., 4th Ann Rept., p. 380. 1893. 

Carboniferous. Texas. Included in Strawn division. . 
Bijiki schist. Van Hise and Bayley. "U. S. Greol. Surv., 15th Ann. Rept., pp. 5, 96, 
1895. 
Algonkian. Lake Superior region. Included in Upper Marquette series. Ish- 
peming formation. 
Bijiki schist, Van Hise. U. S. Geol. Surv., Mon., vol. xxviii, pp. 416-420. 1897. 
Algonkian. Michigan. Included in Ishpeming formation of Upper Marquette 
series. 
Bilozi formation, Smith. Am. Jour. Sci., 3d ser., vol. xlvii, p. 286. 1894. 

Pleistocene. Alabama. 
Biloxi, Smith, Johnson, and Langdon. Ala. Greol. Surv., Geol. of Coastal Plain, 
p. 29. 1894. 
Pleistocene. Alabama. 
Bingen sands, Hill. Ark. Greol. Surv., 1888, vol. ii, pp. 56-58. 1888. 

Tertiary. Included in Camden series. 
Birch Creek series Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 140-144. 
1898. 
Alaska. 
Birch Creek series, Emmons. Nat. Geog. Mag., vol. ix, p. 156. 1898. 

Alaska. 
Bird Mouiitain grit. Dale. U. S. Geol. Surv., 20th Ann. Kept., pt. ii, pp. 15-23. 
1900. 
Silurian. Vermont. Included in Ordovician. 
Birdseye limestone, Emmons. Geol. of New York, pt. ii, pp. 107-111, 317, 382. 
1842. 
Paleozoic. New York. Included in New York Transition system. Champlain 
group. 
Bird's-eye limestone, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 230. 1842. 

Silurian. Included in Lower Silurian. 
Birdseye, Emmons. Agriculture of New York, vol. i, p. 122. 1846. 

Silurian. New York. Included in Champlain division of New York system. 
Birdseye limestone. Hough. Am. Jour, of Agric. and Sci., vol. v, p. 315. 1847. 
Silurian. New York. Exact Syns. Isle La Motte marble, Black marble of 
Gtoesee Falls. 
Birdseye limestone, Hall. Am. Jour. Sci., 2d ser., vol. xvii, pp. 181-193. 1854. 
Silurian. Michigan. 

Bull. 191—02 5 



66 NOBTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Birdeeye limestone, Hitchcock. Geol. of Vt., vol. i, pp. 279-280. 1861. 

Paleozoic. Vermont. Included in Trenton period. 
Birdeeye limestone, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 279, 

281. 1881. 
Birdeeye limestone, Linney. Ky. Geol. Surv., Greol. of Garrard Co., pp. 12-13. 1883. 

Silurian. Kentucky. Included in Trenton period. 
Birdseye limestone, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Mont- 
gomery Counties. 1884. 
Silurian. Kentucky. Included in Trenton period. Includes Kentucky marble. 
Birdeeye limestone, Whitfield. Am. Mus. Nat. Hist., Bull., vol. i, 1881-1886, p. 
295. 1886. 
Vermont. 
Birdseye limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. 
Birdseye limestone, Orton. Ky. Geol. Surv., Kept, on Petroleum, etc., p. 129. 
1891. 
Silurian. Kentucky. 
Birdseye formation. White. N. Y. State Mus., 51st Ann. Kept., vol. i, p. rl27. 1899. 

Ordovician. New York. 
Birdseye limestone, Cumings. N. Y. State Mus., Bull., vol. vii, p. 421. 1900. 

New York. Included in Ordovician. 
Birmingham shale, Stevenson. 2d Pa. Geol. Surv., Rept. K, p. 79. 1876. 

Carboniferous. Pennsylvania. Included in Lower Barren Measures. 
Bishop Mountain conglomerate, Powell. U. S. Geog. and Geol. Surv., Geol. of 
Uinta Mte., pp. 40, 44, 169. 1876. 
Tertiary. Utah. 
Bitter Creek series, Meek. U. S. Geol. and Geog. Surv. of Terr., 6th Ann. Rept, 

p. 455. 1873. Tertiary? Wyoming. 
Bitter Creek, Cope. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 435. 1874. 

Cretaceous. Wyoming. 
Bitter Creek series, Cope. U. S. Geol. and Geog. Surv. of Terr., Bull., No. 2, p. 8. 
1874. 
Cretaceous. Western United States. 
Bitter Creek series, Cope. U. 8. Geol. and Geog. Surv. of Terr., Mon., vcl. ii, pp. 
30-36. 1875. 
Cretaceous. Western United States. 
Bitter Creek, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., pp. 40, 45, 
162. 1876. 
Tertiary. Utah. 
Bitter Creek, Peale. U. S. Geol. and G^og. Surv. of Terr., 8th Ann. Rept., p. 145. 
1876. 
Tertiary. Rocky Mts. 
Bitter Creek, White. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., p. 223. 
' 1879. Tertiary. Utah. 

Bitter Creek beds, Dutton. U. S. Geog. and Geol. Surv., Geol. of High Plateaus 
of Utah, p. 166. 1880. 

Tertiary. Utah. Exact syns. Lower Green River epoch, Bitter Creek beds of . 

Uinta Mts. 
Bitter Creek group, Stanton and Knowlton. Geol. Soc. Am., Bull., vol. viii, p. 146. 
1897. 
Cretaceous. Wyoming. Included in Laramie? 
Bituminous slate, Whitney. Geol. Surv. of Cal., Geol., vol. i, p. 117. 1865. 
Tertiary. California. 



I 



WEEKS.] BIRDSEYE BLACK. 6T 

Bituminouo limestone group, Broadhead. Mo. Geol. Surv. Kept., 1873-74, p. 126. 
1874. 

Carboniferous. Missouri. Included in Coal Measures. 
Black shale, Hall. Geol. Surv. of New York, 3d Ann. Kept., pp. 301-302, 313. 1839. 

Devonian. New York. 
Black shale, Hall. Geol. Surv. of New York, 4th Ann. Kept., pp. 422-423. 1840. 

Devonian. New York. 
Black shale, Vanuxem. Geol. Survey of New York, 4th Ann. Kept., pp. 371.372. 
1840. 

Devonian. New York. 
Black shale, Douglass. Mich. Legislature Doc., vol. i, no. xi (4th Ann. Bept. State 
Geologist for 1840) , pp. 547, 549. 1841. 

Devonian. Michigan. 
Black limestone, Douglass. Mich. L^slature, Doc., vol. i, no. xi (4th Ann. Kept. 
State Geologist, for 1840), pp. 547, 551. 1841. 

Devonian. Michigan. 
Black slate, Emmons. Agric. of New York, vol. i, pp. 63-65. 1846. 

New York. Included in Taconic. 
Black slate, Safford. Am. Jour. Sci., 2d ser., vol. xii, p. 358. 1851. 

Silurian. Tennessee. 
Black lingula slate, Owen. Ky. Geol. Surv., vol. i, pp. 91-95. 1856. 

Devonian. Kentucky. 
Black shale, Safford. Geol. Reconn. of the State of Tenn., 1st Kept., p. 158. 1856. 

Carboniferous (?). Tennessee. 
Black slate, Lyon. St. Louis Acad. Sci., Trans., vol. i, p. 619. 1857. 

Kentucky. 
Black shale, Winchell. The Grand Traverse Region, p. 48. 1866. 

Michigan. 
Black slate, Worthen. 111. Geol. Surv., vol. i, pp. 119-120, 352-353. 1866. 

Devonian. Illinois. Exact Syn. Genesee slate. 
Black slate, Worthen. 111. Geol. Surv., vol. iii, pp. 41, 115-116. 1868. 

Devonian. Illinois. 
Black shale, Safford. Geol. of Tenn., pp. 329-337. 1869. 

Devonian. Tennessee. Part. Syn. Hamilton of New York. 
Black shale, Killebrew and Safford. Resources of Tenn., p. 39. 1874. 

Devonian. Tennessee. Included in Hamilton period. 
Black slate, Collett. Indiana Geol. Surv., 6th Ann. Rept. (1874), p. 88. 1875. 

Indiana. 
Black shale. Little. Handbook of Ga., Com. of Agric, 1876, p. 42. 1876. 

Devonian. Georgia. Part. Syn. Genesee. 
Black shale, Rominger. Mich. Geol. Surv., vol. iii, pt. i, p. 64. 1876. 

Devonian. Michigan. Exact syns. Black shales of Ohio and Genesee shales of 
New York. Basal portion of Winchell' s Huron shale. 
Black slate, Collett. Indiana Geol. Surv., 7th Ann. Rept. (for 1875), p. 373. 1876. 

Devonian. Indiana. 
Black slate, Hall. Paleontology of New York, vol. iv, pt. ii, pp. 148-154. 1879. 

Devonian. New York, Ohio, and Mississippi Valley. 
Black shale, Wetherby. Cin. Soc. Nat. Hist., Jour., vol. iii, no. ii, p. 147. 1880. 

Kentucky. 
Black shale, Orton. Rev. of Strat. Geol. of East. Ohio, p. 2. 1880. 

Devonian. Ohio. 
Black slate, Elrod. Indiana Dept. Geol. and Nat. Hist., 11th Ann. Rept., for 1881, 
pp. 174, 195. 1881. 

Devonian. Indiana. 



68 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Black slate, Linney. Ky. Geol. Surv., Geol. of Garrard Co., pp. 22-23. 1883. 

Devonian. Kentucky. 
Black slate, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Montgomery 
Counties. 1884. 

Devonian. Kentucky. 
Black slate, McCashin. Indiana Dept. Geol. and Nat. Hist., 13th Ann. Bept., for 
1883, pp. 120, 131. 1884. 

Devonian. Indiana. 
Black shale, Knott. Ky. Greol. Surv., Geol. of Marion County, p. 19. 1885. 

Devonian. Kentucky. Included in Hamilton period. 
Black slate, Linney. Ky. Geol. Surv., Geol. of Spencer and Nelson Counties, p. 46. 
1886. 

Devonian. Kentucky. 
Black shale, Williams. U. S. Geol. Surv., Bull., no. 41, p. 24. 

Devonian. Ohio. 
Black shale, Herrick. Denison Univ. Soi. Lab., Bull., voL iv, p. 101. 

Ohio. 
Black shale, Smith. Ala. Geol. Surv., Kept, on Cahaba Coal Field, p. 154. 1890. 

Devonian. Alabama. 
Black shale, Orton. Ky. Geol. Surv., Kept, on Petroleum, etc., p. 133. 1891. 

Devonian. Kentucky. 
Black shale, Phinney. U. S. Geol. Surv., 11th Ann. Kept., pt. i, p. 637. 1891. 

Devonian. Indiana. 
Black shale, Gibson. Ala. Geol. Surv., G^ol. Structure of Murphree's Valley, p. 24. 
1894. 

Devonian. Alabama. 
Black shale, McCalley. Ala. Geol. Surv., Kept, on Valley Regions, pt. ii, pp. 50-51, 
167-172, 237-240, 291-292, 475-476, 809. 1897. 

Devonian. Alabama. Exact Syn. Chattanooga shale. 
Black shale, Newsom. Indiana Acad. Sci., Proc. for 1897, p. 251. 1898. 

Devonian. Indiana. 
Black Bluff group, Aldrich. Ala. Geol. Surv., Bull., No. 1, p. 60. 1886. 

Tertiary. Alabama. 
Black Bluff, Smith and Johnson. U. S. Geol. Surv., Bull., No. 43, p. 61. 1887. 

Tertiary. Alabama. Included in Lower Eocene. Lignitic. 
Black Bluff, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 595. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Black Bluff, Smith. Ala. Geol. Surv., Bull., No. 2, pp. 48, 51. 1892. 

Tertiary. Alabama. Included in Lignitic. 
Black Bluff, Smith, Johnson, and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain, 
pp. 186, 239, 410, 489, 493. 1894. 

Tertiary. Alabama. Included in Eocene, Lignitic. 
Black Butte quartzite, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mt8., 
p. 160. 1876. 

Cretaceous. LTtah. 
Black Hand conglomerate. Hicks. Am. Jour. Sci., 3d ser., vol. xvi. p. 217. 1878. 

Carboniferous. Ohio. Included in Waverly group. 
Black Hill shale, Cragin. Washburn Coll. Lab. Nat. Hist., Bull., vol. i, no. iii, 
p. 90. 1885. 

Cretaceous? Kansas. 
Black Hill shale, Cragin. Am. Geol., vol. xvi, p. 379. 1895. 

Cretaceous. Kansas. Included in FulUngton shale, in Belvidere beds. Part. Syn. 



WEEKS.] BLACK BLACK EIVEE. 69 

Black Prairie formation, Hill. Am. Jour. Sci., 3d ser., vol. xxxviii, p. 469. 1889. 
Cretaceous. Texas. Included in Upper Cretaceous. Gulf series. Includes Black 
Prairie and Lower Cross Timbers formation. 
Black Prairie series, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, pp. xlv- 
xlix. 1890. 
Cretaceous. Texas. Includes Glauconitic beds, Ponderosa marls, Austin chalk, 
Eagle Ford shales, Lower Cross Timber sandstone. 
Black Prairie series. Hill. Texas Geol. Surv., 1st Ann. Kept., pp. 107-116. 1890. 
Cretaceous. Texas. Includes Eagle Ford shales, Austin-Dallas chalk, Exogyra 
ponderosa marls, Glauconitic division. 
Black Biver limestone, Vanuxem. Geol. of New York, pt. iii, pp. 38-46. 1842. 
Paleozoic. New York. Included in New York system. Includes No. II, Penn- 
sylvania survey. Exact Syns. Birdseye limestone, Mohawk limestone, Chazy 
limestone. Metalliferous or Transition lime rock. 
Black River limestone group. Hall. Geol. of New York, pt. iv, 4th Greol. Dist., 
pp. 18, 28. 1843. 
Paleozoic. New York. Included in New York system. Includes Birdseye and 
Chazy. 
Black River limestone, Mather. Geol. of New York, pt. i, pp. 402-409. 1843. 
Paleozoic. New York. Included in Champlain division. Includes Mohawk 
limestone, Birdseye limestone, Bald Mountain limestone. Blue limestone, 
Chazy limestone, Neeleytown limestone, Metalliferous, Transition and Sparry 
lime rocks, and No. II, Pennsylvania survey. 
Black River limestone, Hough. Am. Jour, of Agric. and Sci., vol. v, p. 314. 1847. 

Silurian. New York. 
Black River and Birdseye limestone. Swallow. Mo. Geol. Surv., 1st and 2d Ann. 
Repts., p. 114. 1855. 
Silurian. Missouri. 
Black River limestone. Hall. Am. Jour. Sci., 2d ser., vol. xvii, pp. 181-193. 1854. 

Silurian. Michigan. 
Black River, Shumard. Mo. Geol, Surv., 1st and 2d Ann. Repts., pt. ii, p. 159. 1855. 

Silurian. Missouri. Included in Lower Silurian. 
Black River limestone, Hitchcock. Geol. of Vt., vol. i, pp. 280-281. 1861. 
Paleozoic. Vermont. Included in Trenton period. Exact Syn. Isle La Motte 
marble. 
Black River group, Marcou. Boston Soc. Nat Hist., Proc., vol. viii, 1861-62, pp. 
241, 242, 249. 1861. 
Silurian. Vermont, Canada. Included in Lower Silurian. Includes Black River 
limestone, Birdseye limestone, and Chazy limestone. 
Black River, Broadhead. Mo. Geol. Surv'., Rept. 1855-1873, p. 50. 1873. 

Silurian. Missouri. Included in Lower Silurian. 
Black River and Birdseye, Shumard. Mo. Geol. Surv., Rept. 1855-1871, pp. 267, 
283-307. 1873. 
Silurian. Missouri. 
Black River group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 270, 281. 
1881. 
Includes Birdseye and Black River limestones. 
Black River group. Miller. North American Geol. and Pal., p. 39. 1889. 
Black River limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. Included in Silurian group. 
Black River, Brumell. Geol. Soc. Am., Bull., vol. iv, pp. 227, 234. 1893. 

Silurian. Ontario. Included in Lower Silurian. 
Black River schists, Van Hise. Int. Cong, of Geol., 5th sess., pi. Ixiv. 1893. 
Algonkian. Lake Superior Region. Included in Huronian. 



70 NOBTH AMERICAN GEOLOGIC FOBMATION NAMES. [bull. 191. 

Black River, Gushing. Geol. Soc. Am., Bull., vol. vi, p. 286. 1895. 

Silurian. New York. 
Black Rjver limestone, Clarke and Schuchert. Science, new ser., vol. x, pp. 876- 
877. 1899. 
Silurian. New York. Included in Mohawkian. 
Black River Falls iron-bearing schists, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 
1899. 
Algonkian. Wisconsin. Part. Syns. Menominee, Felch Mountain Iron series, 
Lower Marquette, Lower Vermilion, Lower Huronian. 
Black River formation, White. N. Y. State Mus., 51st Ann. Rept. vol. i, pr. 27. 1899. 

Silurian. New York. 
Black River limestone, Cumings. N. Y. State Mus., Bull., vol. vii, p. 423. 1900. 

New York. Included in Ordovician. 
Black River limestone, Cumings. N. Y. State Mus., Bull., vol. vii, No. 34, p. 423. 
1900. 
Silurian. New York. 
Black River limestone. Gushing. N. Y. State Geol., 15th Ann. Rept., vol. i, p. 514. 
1897. 
Silurian. New York. 
Blackstone series, Shaler, Woodworth, and Foerste. U. S. Greol. Surv., Mon., vol. 
xxxiii, pp. 104-107. 1899. 
Algonkian. Rhode Island. Includes Cumberland quartzites, Ashton schists, and 
Smithfield limestone. 
Blacksville limestone, White. U. S. Geol. Surv., Bull., No. 65, p. 36. 1891. 
Carboniferous. Pennsylvania. Included in Permo-Carboniferous, Dunkard Creek. 
Exact Syn. Limestone iii. 
Blackwater, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 32. 1896. 
Carboniferous. Virginia, West Virginia. Exact Syns. Pottsville conglomerate, 
Rogers, No. XII and Serai. 
Blackwater sandstone, Darton and Taff. U. S. Geol. Surv., G^ol. Atlas of U. S., 
Folio No. 28. 1896. 
Carboniferous. West Virginia, Maryland. 
Blackwater formation, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 61. 
1899. 
Carboniferous. Virginia, West Virginia. 
Blanco beds. Cope. Phil. Acad. Nat. Sci., Proc.,1892, p. 226. 1892. 

Texas. Intermediate between Loup Fork and Equus beds. 
Blanco beds, Cummins. Texas Geol. Surv., 4th Ann. Rept., pp. 200-201. 1893. 

Tertiary. Texas. 
Blanco beds, Scott. Geol. Soc. Am., Bull., vol. v, p. 594. 1894. 

Tertiary. Texas. Included in Pliocene. 
Blanco canyon. Hill. Texas Geol. Surv., Ist Ann. Rept., pp. 190-191. 1890. 

Juratrias? Texas. 
Blanco canyon beds, Cummins. Texas Geol. Surv., 2d Ann. Repfc., pp. 431-433. 

Tertiary. Texas. 
Blanco canyon beds, Kennedy. Texas Geol. Surv., 3d Ann. Rept., p. 170. 1892. 

Tertiary. Texas. 
Blanford limestone, Hitchcock. Mass. Geol. Rept., p. 305 (2d ser., p. 304). 1833. 

Massachusetts. 
Bloomfield sandstone, Claypole. 2d Pa. Geol. Surv., Rept. F*, pp. 54, 401. 1886. 

Silurian. Pennsylvania. Included in Onondaga. 
Bloomfield sandstone, Keyes. Mo. Geol. Surv., vol. iv, p. 30. 1894. 
Tertiary. Missouri. Included in Eocene. 



WEEKS] BLACK BIVEB — BLUE OUT. 71 

Blooxnsbur^ shale, White. 2d Pa. Geol. Surv., Kept. T», pp. 127, 130-131, 1885. 

Silurian. Pennsylvania. 
Bloomsburg shale, Lesley. 2d Pa. Geol. Surv., Final Bept., vol. ii, pp. 746, 760, 790, 
823-824. 

Silurian. Pennsylvania. Included in No. IV, Salina. 
Bloomsbury group, Matthew. Can. Boy. Soc., Trans., vol. xii, sec. iv, p. 89. 1895. 

Devonian. New Brunswick. £xact Syns. No. IV, Dawson. 
Blossburg, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 234. 1842. 

Pennsylvania. Included in Devonian. Includes Upper division. 
Blue limestone, Locke. Ohio Geol. Surv., 2d Ann. Bept. by W. W. Mather, p. 210. 
1838. 

Silurian. Ohio. 
Blue marl, Bogers. Bept. for 1839 and Geol. of Virginias, p. 268. 1840. 

Tertiary. Virginia. Included in Miocene. 
Blue limestone, Douglass. Michigan Legislature, Doc., vol. i, no. xi (4th Ann. Bept. 
State Geologist for 1840), pp. 548, 551. 1841. 

Devonian. Michigan. 
Blue limestone, Daniels. Wis. Geol. Surv., Bept. 1853, p. 15. 1854. 

Silurian. Wisconsin. Exact Syn. Trenton. 
Blue limestone, Percival. Wis. Gfeol. Surv., Bept. 1854, p. 15, and Bept. for 1856, 
pp. 25, 77-86. 1855. 

Silurian. Wisconsin. Includes Blue limestone and Buff limestone. 
Blue shale, Percival. Wis. Geol. Surv., Bept. 1856, p. 71. 1856. 

Siluriam. Wisconsin. 
Blue shell limestone and marl, Owen. Ky. Geol. Surv., vol. i, pp. 98-101. 1856. 

Silurian? Kentucky. 
Blue limestone, Whitney. 111. Geol. Surv., vol. i, pp. 165-169. 1866. 

Silurian. Illinois.. Exact Syn. Trenton. 
Blue limestone, Shaw. 111. Geol. Surv., vol. v, pp. 21, 38, 69-70, 88-89, 113-114, 
128-129. 1873. 

Silurian. Illinois. Included in Trenton. 
Blue limestone, Emmons. U. S. Greol. Surv., 2d Ann. Bept., p. 218. 1882. 

Carboniferous. Colorado. 
Blue limestone. Upper, Chamberlin. Geology of Wis., vol. i, p. 163, vol. ii, p. 296. 
1883. 

Cambro-Silurian. Wisconsin. Included in Trenton. 
Blue limestone. Lower, Chamberlin. Geology of Wis., vol. i, p. 162, vol. ii, p. 294. 
1883. 

Cambro-Silurian. Wisconsin. Included in Trenton. 
Blue limestone, Emmons. U. S. Geol. Surv., Mon., vol. xii, p. 63. 1886. 

Silurian. Colorado. 
Blue sandstone, Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 75-77. 1888. 

Cretaceous. Arkansas. Included in Upper Arenaceous beds. 
Blue marl, Clark. U. S. Geol. Surv., Bull., No. 83, p. 41. 1891. 

Tertiary. New Jersey. Included in Upper Marl bed. Eocene. 
Blue Canyon formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 66. 1900. 

Carboniferous. California. Included in Calaveras formation. 
Blue Creek series. Bain. Geol. Soc. Am., Bull., vol. xi, pp. 135, 138-140. 1900. 

Cambrian. Oklahoma. 
Blue Cut shale, Cragin. Am. Geol., vol. xvi, p. 380. 1895. 

Cretaceous. Kansas. Included in Fullington shale^ in Belvidere beds. Part. Syn. 
Kiamitia. 



72 NORTH AMEBIC AN GEOLOGIC FOBMATION NAMES. [bull.19L 

Bluefleld shale, Campbell. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 
1896. 

Carboniferoufl. Virginia, West Virginia. 
Bluefield shale, Campbell. U. S. Greol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 

Carboniferous. Virginia, West Virginia. Part. Syns. No. XI, Greenbrier shale. 
Blue Gate, Gilbert. U. S. Greog. and Geol. Surv., Kept, on Henry Mts., p. 4. 1877. 

Cretaeeous. Utah. 
Blue Hill shales, Logan. Kan. Univ. Geol. Surv., vol. ii, p. 218. 1897. 

Cretaceous. Kansas. Included in Benton. Exact Syn. Victoria shale. 
Blue Hill, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-26. 1898. 

Cretaceous. Kansas. Included in Benton. Exact Syn. Victoria shale. 
Blue Hill shales, Logan. Jour, of Gteol., vol. vii, pp. 88-89. 1899. 

Cretaceous. Kansas, Nebraska. Included in Fort Benton. Exact Syn. Upper 
Carlile. 
Blue Moimtaiii series, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., voL xxxiv, 
pp. 41-69. 1899. 

Cretaceous and Eocene. Jamaica. Includes Catadupa, Chapelton, Richmond, 
Minho, Ballard, Logie Green, Frankenfield, Jerusalem, and Yallahs beds. 
Bluestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Carboniferous. Virginia, West Virginia. 
Bluestone formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 

Carboniferous. Virginia, West Virginia. Part. Syns. No. XI, Greenbrier shale. 
Bluff, Swallow. Mo. Geol. Surv., let and 2d Ann. Repts., pp. 69, 172, 186. 1855. 

Pleistocene. Missouri. Exact Syn. Loess. 
Bluff formation, Hilgard. Kept, on Geol. and Agric. of Miss., pp. 194-197. 1860. 

Pleistocene, Mississippi. 
Bluff gravel, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, p. 371. 1864. 

Pleistocene. Tennessee. 
Bluff loam, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, p. 372. 1864. 

Pleistocene. Tennessee. 
Bluff lignite, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, p. 370. 1864. 

Tertiary? Tennessee, 
• Bluff group, Safford. Geology of Tennessee, pp. 432-434. 1869. 

Pleistocene. Tennessee. Includes Bluff loam and Bluff gravel. 
Bluff lignite, Safford. Geology of Tennessee, pp. 428-431. 1869. 

Tertiary. Tennessee. 
Bluff formation. White. Iowa Geol. Surv., vol. i, pp. 103-117. 1870. 

Pleistocene. Iowa. Exact Syn. Loess. 
Bluff, Hay den. U. S. Geol. and Geog. Surv. of Terr., lst-3d Ann. Repts. p. 18. 1873. 

Pleistocene. Nebraska. 
Bluff, Shumard. Mo. Geol. Surv., Kept. 1855-1871, p. 315. 1873. 

Pleistocene. Missouri. 
Bluff, Broadhead. Mo. Geol. Surv. Kept. 1855-1871, pp. 40, 67, 94. 1873. 

Pleistocene. Missouri. 
Bluff, Meek. Mo. Geol. Surv., Kept. 1855-1871, p. 161. 1873. 

Pleistocene. Missouri. Exact Syn. Loess. 
Bluff loam, Killebrew and Safford. Resources of Tennessee, p. 45. 1874. 

Pleistocene. Tennessee. 
Bluff, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 21. 1874. 

Pleistocene. Missouri. Exact Syn. Loess. 
Bluff formation, Hilgard. Smithsonian Contrib., vol. xxiii, no. ii, p. 3. 1881. 

Pleistocene. Mississippi. 






i 



it 



frL WEEKS.] BLUEFIELD BOONE. 73 

lioX Bluff limestone, Lower, Chamberlin. Geology of Wisconsin, vol. i, p. 162; vol. ii, 
p. 293. 1883. 
Cambro-Silurian. Wisconsin. Included in Trenton formation. 
oAi Bluff limestone, Lower, Chamberlin. Greology of Wisconsin, vol. i, p. 163; vol. ii, 

p. 295. 1883. 
r?k Cambro-Silurian. Wisconsin. Included in Trenton. 

4. i! Bluff lignite, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 153-154. 1884. 
Tertiary. Tennessee. 
Bluff bed, Taff. Texas Geol. Surv., 2d Ann. Kept., pp. 727-728. 1891. 

Cretaceous. Texas. Included in Washita division. 
Bluff Creek bed, Drake. Texas Geol. Surv., 4th Ann. Kept., p. 400. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Bodeville series, Dumble. Texas Greol. Surv., 1st Ann. Kept., pi. iii, p. Iv. 1890. 
[[(^ Archean. Texas. Included in Bumetan system. 

Boggy shale, Taff. U. S. Geol. Surv., 19th Ann. Kept, pt. iii, p. 438. 1899. 
nr Carboniferous. Indian Territory. Included in Coal Measures. 

Boggy shale, Taff and Adams. U. S. Geol. Surv., 21st Ann. Kept., pt. ii, p. 278. 1900. 

Carboniferous. Indian Territory. 
Bogue Island formation. Hill. Harvard Coll. Mus. Comp. 2kx)l., Bull., vol. xxxiv, 
p. 103. 1899. 
Pleistocene. Jamaica. Included in Coastal series. 
Bolxexnia conglomerate, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, p. 30. 1898. 

Algonkian. Michigan. Exact Syn. St. Louis conglomerate. 
Bolivar sandstone, Stevenson. 2d Pa. Geol. Surv., Kept. K', pp. 41-42. 1878. 

Carboniferous. Pennsylvania. Included in Lower Productive series. 
Bolivar fireclay. White. U. S. Geol. Surv., Bull., No. 65, p. 159. 1891. 
Carboniferous. Pennsylvania, West Virginia. Included in Lower Coal Measures, 
Allegheny River series. 
Bolton mica slate formation, Percival. Report on Geol. of Conn. 1842, pp. 229-233. 
1842. 
Included in * * Primary. * ' 
Bonair conglomerate lentil, Campbell. TJ. S. Geol. Surv., Geol. Atlas of XJ. S., 
FoUoNo. 53. 1899. 
Carboniferous. Tennessee. Included in Pennsylvanian series. Exact Syn. Look- 
out sandstone. 
Bonaventure formation. Chapman. Can. Inst. , new ser. , vol. viii, pp. 450-451 . 1863. 

Carboniferous. Canada. 
Bonaventure formation, Logan. Can. Geol. Surv., Rept. 1843-1863, pp. 404-405, 886. 
1863. 
Carboniferous. Canada. Included in Gaspe series. 
Bonaventure formation, Hind. Geol. of New Brunswick, p. 57, 1865. 

Carboniferous. New Brunswick. 
Bonaventure formation. Ells. Can. Geol. Surv., Rept. 1879-80, pp. 7D-10D. 1881. 

Carboniferous. New Brunswick. Included in Lower Carboniferous. 
Bonaventure formation. Ells. Can. Geol. Surv., Rept. 1880-81-82, p. 3D. 1883. 

New Brunswick. Partly included in Devonian. 
Bone Lake crystalline schists, Clements and Smyth. U. S. Geol. Surv., 19th Ann. 
Rept., pt. iii, p. 62. 1899. 
Algonkian. Michigan. Included in Hemlock formation. 
Boone chert and cherty limestone, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 
27-37, 149. 1888. 
Carboniferous. Arkansas. Included in Lower Carboniferous. 
Boone chert, Hopkins. Ark. Geol. Surv., 1890, vol. iv, pp. 94-107. 1890. 
Carboniferous. Arkansas. Included in Lower Carboniferous. 



74 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Boone chert, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 129-138. 1890. 

Carboniferous. Arkansas. Included in Mississippian series, Osage group. 
Boone chert and limestone, Simonds and Hopkins. Ark. Q«ol. Surv., 1891, vol. ii, 
pp. 38-46. 1891. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Boone chert and limestone, Drake. Am. Phil. Soc., Proc., vol. xxxvi, p. 349. 1897. 

Carboniferous. Indian Territory. Included in Lower Carboniferous. 
Boone chert, Williams. Ark. Geol. Surv., 1892, vol. v, pp. 337-341. 1900. 

Carboniferous. Arkansas. 
Booneville stage, Stevenson. N. Y. Acad. Sci., Trans., vol. vx, p. 51. 1896. 

Carboniferous. Arkansas. 
Boacabel beds, Shaler and Wood worth. U.S. Geol. Surv., 19th Ann. Rept., pt. ii, 
pp. 424-425. 1899. 

Juratrias. Virginia. Included in Tuckahoe group. 
Bosque division, Taff . Texas Geol. Surv. , 3d Ann. Rept. , pp. 272-273, 281-325. 1892. 

Cretaceous. Texas. Includes Paluxy sand. Glen Rose bed, and Trinity sand. 
Bosque, Dumble and Cummins. Am. Geol., vol. xii, p. 312. 1893. 

Cretaceous. Texas. 
Bosque division, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 378. 1896. 

Cretaceous. Texas. Included in Lower Cretaceous. 
Boaaardville limestone. White. 2d Pa. Geol. Surv., Rept. G«, pp. 141-145. 1882. 

Silurian. Pennsylvania. Included in Upper Helderbej^g, or No. VI. 
Bossardville limestone, White. 2d Pa. Geol. Surv., Rept. G^ pp. 98-101. 1883. 

Silurian. Pennsylvania. Included in Lower Helderberg, or No. VI. 
Bossardville limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 929-934, 
948, 960, 964. 1892. 

Silurian. Pennsylvania. Included in No. vi. Exact Syn. Lewistown limestone. 
Bossardville limestone, Weller. N. J. Geol. Surv., Rept. 1899, pp. 6-7. 1900. 

Silurian. New Jersey. 
Boston group, Branner. Ark. Geol. Surv., 1888, vol. iv, p. xiii. 1888. 

Carboniferous. Arkansas. Included in Mississippian series. Part. Syns. Chester 
and St. Louis. 
Boston group, Penrose. Ark. Geol. Surv., 1890, vol. i, p. 140. 1890. 

Carboniferous. Arkansas. Included in Mississippian series. 
Boston group, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Boston group, Drake. Am. Phil. Soc, Proc., vol. xxxvi, p. 354. 1897. 

Carboniferous. Indian Territory. Included in Lower Carboniferous. Includes 
Kessler limestone, Pentremital limestone, Washington shale and sandstone, 
Archimedes limestone, Marshall shale. Exact Syns. St. Louis and Chester. 
Boston group, Williams. Ark. Geol. Surv., 1892, vol. v, pp. 358-362. 1900. 

Carboniferous. Arkansas. 
Boston Bar group, Dawson. Can. Geol. Surv., Rept. 1871-72, pp. 62-63. 1872. 

British Columbia. Exact Syn. Anderson River group. 
Boston Bar group, Dawson. Can. Geol. Surv., Rept. 1877-78, p. 73B. 1879. 

British Columbia. 
Bottom Prairie, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 66, 172. 
1855. 

Pleistocene. Missouri. 
Bottom Prairie, Broadhead. Mo. Geol. Surv., Rept. 1855-1871, pp. 40, 67, 75, 94. 
1873. 

Pleistocene. Missouri. 
Bottom Prairie, Broadhead. Mo. Geol. Surv., Rept. 1873-74, pp. 20, 21. 1874. 

Pleistocene. Missouri. 



i 

M 



WEEKS] BOONE — BEIDGEPOET. 75 

Boulder formation, Billinga. Can. Nat., vol. i, pp. 321-336. 1857. 

Pleistocene, Canada. 
Boulder formation, Logan, Can. Geol. Surv., Kept. 1843-1863, pp. 887, 893-896. 1863. 

Pleistocene, Canada. 
Boulder drift, Andrews. Am. Jour. Sci., 2d ser., vol. xlviii, pp. 172-179. 1869. 

Pleistocene. Illinois. 
Boulder clay, Dawson. Can. Nat., new ser., vol. vi, pp. 22, 24-34. 1872. 

Pleistocene, Canada. 
Bowden beds, Dall. U. S. Geol. Surv., 18th Ann. Kept., pt. ii, p. 340. 1898. 

Tertiary. Jamaica. Included in Chipolan stage; Oligocene. Exact Syn. Monkey 
Hill beds. 
Bowden, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 82. 1899. 

Tertiary. Jamaica. Included in Coastal series. Pliocene. 
Bowling' Green limestone, Keyes. Iowa Acad. Sci., Proc., vol. v, p. 62. 1898. 

Silurian. Iowa. 
Bow River group, McConnell. Can. Geol. Surv., new ser., vol. ii, pp. 15D, 29D-30D. 
1887. • 

Cambrian. Canada. 
Bow River series, Dawson. Geol. Soc. Am., Bull., vol. ii, p. 168. 1891. 

Cambrian. British Columbia. 
Bow River series, McConnell. Can. Geol. Surv. , new ser. , vol. vii, pp. 24C-25C. 1896. 

Cambrian. Canada. 
Bozeman Lake beds, Iddings and Weed. U. S. Geol. Surv., Greol. Atlas of U. S., 
Folio No. 1. 1894. 

Included in Neocene. Montana. 
Bozeman Lake beds, Peale. U. S. Geol. Surv. , Geol. Atlas of XJ. S. , Folio No. 24. 1896. 

Included in Neocene. Montana. 
Bradford red beds, Carll. 2d Pa. Geol. Surv., Rept. P, pp. 95-97. 1890. 

Carboniferous. Pennsylvania. Included in Pocono. 
Bradford 3d sandstone, Carll. 2d Pa. Geol. Surv., Rept. P, pp. 133-136. 1890. 

Devonian. Pennsylvania. 
Branclxtown clay, Lewis. Phil. Acad. Nat. Sci., Proc, vol. xxxii, pp. 268, 296-297. 
1880. 

Tertiary. Pennsylvania. 
Brandon formation, Clark. U. S. Geol. Surv., Bull., No. 83, p. 90. 1891. 

Tertiary. Vermont, Pennsylvania, Georgia. Included in Eocene. 
Braxton, Taff and Brooks. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 34. 1896. 

Carboniferous. West Virginia. 
Braxton formation, Campbell. U. S. Geol. Surv., Geol. Atlas of XJ. S., Folio No. 69. 
1900. 

Carboniferous. West Virginia, Ohio. Includes Monongahela River Coal series 
and Elk River series in part. 
Breathitt formation, Campbell. XJ. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 47. 
1898. 

Carboniferous. Kentucky. Included in Pennsylvanian series. 
Bretonian, Walcott. U. S. Geol. Surv., Bull., No. 81, p. 247. 1891. 

Cambrian. New Brunswick. Included in Upper Cambrian. 
Briceville shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 25. 1896. 

Carboniferous. Tennessee. 
Briceville shale, Keith. XJ. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 1896. 

Carboniferous. Tennessee. Part. syn. Walden sandstone. 
Briceville shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 40. 1897. 

Carboniferous. Tennessee. Part. Syn. Walden sandstone. 
Bridgreport sandstone, Clay pole. 2d Pa. Geol. Surv., Rept. P, pp. 57, 58. 1885. 

Silurian. Pennsy vania. Included in Onondaga group. 



76 NOBTH AMERIOAN GEOLOGIC FOBMATION NAMES. [rull.191. 

Bridgeport sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept, vol. ii, pp. 761-763. 
1892. 

Silurian. Pennsylvania. Included in No. V, Salina, Bloomsbuig shale. 
Biidger group, Hayden. U. S. Geol. Surv. of Wyoming, pp. 55-58. 187L 

Tertiary. Wyoming 
Bridger group, ComstocK. Am. Jour. Sci., 3d ser., vol. vi, p. 427. 1873. 

Neocene. Wyoming. 
Bridger, Cope. Kept. Secy, of War to 43d Cong., vol. ii, pt. ii, p. 592. 1874. 

Tertiary. New Mexico. Included in Eocene. 
Bridger, Peale. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept, p. 149, also 
see pp. 156-158. 1876. 

Tertiary. 
Bridger, Powell. U. S. Greog. and Geol. Surv., Geology of Uinta Mts., pp. 40, 45, 
167. 1876. 

Tertiary. Utah. 
Bridger, Emmons. U. S. Geol. Exploration of 40th Parallel, vol. ii, pp. 204, 244. 
1877. 

Tertiary. Utah. 
Bridger, White. U. S. G«ol. and Geog. Surv. of Terr., 10th Ann. Rept, pp. 19, 22, 
37. 1878. 

Tertiary. Utah, Colorado. 
Bridger group. King. U. S. Geol. Exploration of 40th Parallel, vol. i, p. 394. 1878. 

Tertiary. Wyoming. Included in Eocene. 
Bridger, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 635, 639. 
1879. 

Tertiary. Wyoming. 
Bridger, Endlich. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., p. 132. 
1879. 

Tertiary. Wyoming. 
Bridger beds, McMaster. Mus. of Geol. and Arch, of Coll. of N. J., Contributions, 
vol. i, no. i, pp. 45-54. 1881. 

Wyoming. 
Bridger, Cope. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. iii, pp. 11-12. 1881. 

Tertiary. 
Bridger, Clark. U. S. Geol. Surv., Bull., No. 83, p. 141. 1891. 

Tertiary. Wyoming, Utah. Exact Syn. Dinoceras. 
Bridger, Peterson. Am. Mus. Nat. Hist., Bull., vol. v, p. 73. 1895. 

Tertiary. Utah. 
Bridger beds, Osbom. Am. Nat., vol. xxxi, pp. 966-968. 1897. 

Tertiary. Colorado. Included in Eocene. 
Bridger beds, Osbom. Am. Assoc. Adv. Sci., Proc, vol. xlvi, pp. 205-206. 1898. 

Tertiary. Colorado. 
Bridger formation. Smith. Jour, of Geol., vol. viii, pp. 450-451. 1900. 

Tertiary. Western North America. Included in Eocene. Includes Green River 
and Wind River beds. 
Bridgeton formation, Salisbury. N. J. Geol. Surv., Rept., 1897, pp. 13-15. 1898. 

New Jersey. 
Brimfield schist, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pi. 34. 1898. 

Silurian. Massachusetts. 
Bristol Bay silts and gravels, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, 
pp. 177-178. 1900. 

Pleistocene. Alaska. 
Brito formation, Hayes. Geol. Soc. Am., Bull., vol. x, p. 285-308. 1899. 

Tertiary. Nicaragua. Included in Oligocene. 



WEEKS.] BBIDGEPOET — BBUNSWICK. 77 

Broad Branch series, McGee, Williams^ and Darton. Int. Cong, of Geol., 5th sess., 
p. 244. 1893. 

Arehean. District of Columbia. 
Broad Top series, Rogers. 1st Ann. Rept. State Geologist of Pa., pp. 16-18. 1836. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Brontotheriuzn, Marsh. U. S. Geol. Surv., Mon., vol. xxvii, p. 479. 1896. 

Tertiary. Colorado. 
Brown shale, Phinney. U. S. Geol. Surv;, 11th Ann. Rept., pt. i, p. 637. 1891. 

Devonian. Indiana. 
Brown loam, Mabry. Jour, of G^ol., vol. vi, pp. 274-302. 1898. 

Tertiary. Gulf States. 
Brown Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 381. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Brown's Park, Powell. U. S. G^og. and Geol. Surv., Geology of Uinta Mts., 
pp. 40, 44, 168. 1876. 

Tertiary. Utah. 
Brown's Park, Emmons. U. S. Geol. Exploration of 40th Parallel, vol. ii, p. 222. 
1877. 

Tertiary. Utah. Exact Syn. Green River. 
Brown's Park beds, Osbom. Am. Mus. Nat. Hist., Bull., vol. vii, p. 74. 1895. 

Tertiary. Utah. Included in Upper Eocene? Exact Syn. Uinta beds. 
Brown's Park beds, Irving. N. Y. Acad. Sci., Trans., vol. xv., p. 252. 1896. 

Tertiary. Utah. Included in Pliocene. 
Brownstown marl. Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 86, 87. 1888. 

Cretaceous. Arkansas. Included in Chalky Marl beds. Exact Syn. Exogyra 
ponderosa marls of Texaa. 
Brownstown, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Indian Territory, Texas. Included in Glauconitic division. 
Brownsville bed, Elrod. Indiana Dept. Geol. and Nat. Hist., 14th Ann. Rept., for 
1884., p. 69. 1884. 

Indiana. 
Browntown sandstone. White. U. S. Geol. Surv., Bull., No. 65, p. 58. 1891. 

Carboniferous. West Virginia. Included in Upper Coal Measures, Monongahela 
River series. 
Browntown sandstone. White. Geol. Soc. Am., Bull., vol. iii, p. 190. 1892. 

Permian. West Virginia. Included in Dunkard Creek series. 
Brownville slate, Jackson. Geol. Rept. Public Lands in Maine, vol. i, p. 37. 1837. 
Brown"wood limestone, Tarr. Am. Geol., vol. vi, p. 150. 1890. 

Carboniferous. Texas. Included in Upper Carboniferous. 
Brown wood canyon, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. Ixvii. 
1890. 

Carboniferous. Texas. Included in Coal Measures. 
Brown wood bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 389. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Brule clay, Darton. U. S. Geol. Surv., 19th Ann. Rept., pt. iv, pp. 736, 755-759. 
1899. 

Tertiary. Nebraska. Included in Oligocene? 
Brunswick series, Salisbury. N. J. Geol. Surv., Rept. 1896, pp. 47-55. 1897. 

Juratrias. New Jersey. Included in Newark system. 
Brunswick shale series, Kiimmel. Jour, of Geol., vol. v, pp. 547-549. 1897. 

Juratrias. New Jersey. Included in Newark system. 
Brunswick series, Kummel. N. J. Geol. Surv., Rept. 1897, pp. 41-52. 1898. 

Juratrias. New Jersey. 



78 NORTH AMERtCAN GEOLOGIC FORMATION NAMES. [bdll.191. 



Brunswick beds, Kiimmel. Jour, of Geol., vol. vii, pp. 26-27. 1899. 

Juratriafl. New York, New Jersey. Included in Newark. 
Brush Creek limestone. White. 2d Pa. Geol. Surv., Rept. Q, p. 34. 1878. 

Carbonifereus. Pennsylvania. Included in Lower Barren series. 
Exact Syn. Philson (?) limestone. 
Bryant limestone, Keyes. Iowa Acad. Sci., Proc., vol. v, p. 61. 1898. 

Silurian. Iowa. Included in Lower Silurian. 
BrynMawr gravel, Lewis. Phil. Acad. Nat. Sci., Proc, vol. xxxii, pp. 269, 288, 296. 
1880. 

Tertiary. Pennsylvania. Included in Upper Miocene. Part. Syn. Mount Holly 
conglomerate of New Jersey. 
Bryn Mawr gravel. Hall. 2d Pa. Geol. Surv., Rept. O, pp. 10-13. 1885. 

Tertiary. Pennsylvania. 
Bryn Mawr gravel, Bascom. Am. Geol., vol. xix, pp. 50-57. 1897. 

Pleistocene. Pennsylvania. 
Buchanan gravels, Calvin. Iowa Acad. Sci., Proc., vol. iii, pp. 58-60. 1896. 

Pleistocene. Iowa. 
Buchanan gravels, Calvin. Iowa Geol. Surv., vol. vii, pp. 172-174. 1897. 

Pleistocene. Iowa. 
Buchanan, Beyer. Iowa Geol. Surv., vol. vii, pp. 233-234. 1897. 

Pleistocene. Iowa. 
Buchanan gravels, Calvin. Iowa Geol. Surv., vol. viii, pp. 167-170, 241-244. 1898. 

Pleistocene. Iowa. 
Buchanan?, Beyer. Iowa Geol. Surv., vol. ix, p. 199. 1899. 

Pleistocene. Iowa. 
Buchanan gravel, Udden. Iowa Geol. Surv., vol. ix, p, 339. 1899. 

Pleistocene. Iowa. 
Buchanan gravel. Wilder. Iowa Geol. Surv., vol. x, p. 129. 1900. 

Pleistocene. Iowa. 
Buchanan gravel, Williams. Iowa Geol. Surv., vol. x, p. 359. 1900. 

Pleistocene. Iowa. 
Buchanan gravels, Calvin and Bain. Iowa Geol. Surv., vol. x, p. 467. 1900. 

Pleistocene. Iowa. 
Buda limestone, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 18. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Buda limestone, Vaughan. U. S. Geol. Surv., Geol. Atlas of XJ. S., Folio No. 64. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Buff colored limestone, Daniels. Wis. Geol. Surv., 1853, p. 16. 1854. 

Silurian. Wisconsin. 
Buff sand, Winchell. Am. Assoc. Adv. Sci., Proc, vol. x, p. 89. 1856. 

Tertiary. Alabama. Included in Lower Eocene. 
Buff limestone, Everett. 111. Nat. Hist. Soc, Trans., vol. i, ser. i, p. 56. 1861. 

Silurian. Ohio. 
Buff limestone, Whitney. Rept. on Upper Mississippi Lead Region^ p. 157. 1862. 

Silurian. Wisconsin. 
Buff limestone, Whitney. 111. Geol. Surv., vol. i, pp. 165-167. 1866. 

Silurian. Illinois. Exact Syn. Birdseye and Black River. 
Buff limestone, Shaw. 111. Geol. Surv., vol. v, pp. 22-23, 70, 89-90, 115, 128. 1873. 

Silurian. Illinois. Included in Trenton group. 
Buff limestone, Hershey. Am. Geol., vol. xiv, p. 175. 1894. 

Silurian. Illinois. 
Buff limestone, Winchell and Ulrich. Minn. Geol. and Nat. Hist. Surv., Final f 

Rept, vol. iii, pt. ii. p. xci. 1897. 

Silurian. Minnesota. Included in Stones River group. 



WEEKS.] BRUNSWICK BUBLINGAME. . 79 

Buff Bay beds, Hill. Harvard Coll. Mus. Oomp. Zool., Bull., vol. xxxiv, p.84. 1899. 

Pleistocene or Pliocene. Jamaica. Included in Coastal series. 
Buffalo sandstone, White. 2d Pa. Geol. Surv., Kept. Q, p. 33. 1878. 

Carboniferous. Pennsylvania. Included in Lower Barren Measure series. Exact 
Syn. Upper Mahoning. 
Buffalo shales, Keyes. Iowa Acad. Sci., Proc., vol. v, pp. 61,62. 1898. 

Silurian. Iowa. Included in Lower Silurian. 
Buffalo Creek bed, Drake. Texas Greol. Surv., 4th Ann. Kept., p. 384. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Buhr, Mather. Am. Jour. Sci., Istser., vol. xxxiv, p. 360. 1838. 

Carboniferous. Ohio. 
Buhrstone formation, Tuomey. Kept, on Geol. of South Carolina, pp. 140-154. 1848. 

Tertiary. South Carolina. Included in Eocene. 
Buhr-stone, Tuomey. Ala. Geol. Surv., 1st Bien. Kept, p. 147. 1850. 

Tertiary. Alabama. 
Buhrstone, Winchell. Am. Assoc. Adv. Sci., Proc., vol. x, p. 87. 1856. 

Tertiary. Alabama. Included in Lower Eocene. 
Buhrstone group, Hilgard. Am. Jour. Sci., 2d ser., vol. xliii, p. 33. 1867. 

Tertiary. Alabama and Mississippi. Exact Syn. Siliceous Claiborne. 
Buhrstone, Pratt. Ashley River Phosphates. 1868. 

Tertiary. South Carolina. Included in Eocene. 
Buhrstone, Holmes. Phosphate Rock of South Carolina. 1870. 

Tertiary. South Carolina. Included in Eocene. Exact Syn. Silicified shell 
formation. 
Buhrstone beds, Broadhead. Mo. Geol. Surv., Rept. 1855-1871, p. 31. 1873. 

Silurian. Missouri. Included in Lower Silurian, Calciferous sand rock. 
Buhrstone, Heilprin. Phil. Acad. Nat. Sci., Proc, p. 184. 1882, 

Included in Eocene. Part. Syns. Siliceous Claiborne of Mississippi, Chalk Hills. 
Buhrstone, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 116, 120, 147, 148. 
1884. 

Tertiary. Included in Eocene. Exact Syns. Chalk Hills, Siliceous Claiborne. 
Buhrstone, Smith and Johnson. U. S. Geol. Surv., Bull., No. 43, pp. 16, 18, 34. 1887. 

Tertiary. Alabama. Included in Middle Eocene. 
Buhrstone, division, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., p. 49. 1891. 

Tertiary. Georgia. Included in Eocene. 
Buhrstone series, Langdon. Ga. Geol. Surv., 1st Rept. of Prog., p. 96. 1891. 

Tertisixy. Georgia 
Buhrstone iron ore. White. U. S. Geol. Surv., Bull., No. 65, p. 172. 1891. 

Carboniferous. Pennsylvania, Ohio, West Virginia. Included in Lower Coal 
Measures, Allegheny River series. Exact Syns. Baird, Gray, and Limestone 
ore. 
Buhrstone, Clark. U. S. Geol. Surv., Bull., No. 83, pp. 5, 61, 68. 1891. 

Tertiary. Mississippi, Alabama, South Carolina. Included in Eocene. 
Buhrstone, Langdon. Ala. Geol. Surv., Geol. of Coastal Plain, pp. 390, 491. 1894. 

Tertiary. Alabama. Included in Eocene Claiborne. 
Bull Creek sandstone, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 379. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Bull Mountam series, Lindgren. U. S. 10th Census Repts., vol. xv, pi. Ix. 1886. 

Cretaceous-Tertiary. Montana Included in Laramie. 
Buncombe group, Kerr. N. C. Geol. Surv., Rept. 1866-67, pp. 29-30. 1869. 

North Carolina. 
Burlingr&nie shale, Haworth. Am. Jour. Sci., 3d ser., vol. 1, p. 461. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 



80 NORTH AMEBICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Burlingame shales, Haworth. Kansas Univ. Geol. Surv., vol. i, pp. 162, 226-227. 
1896. 

Carboniferous. Kansas. 
Burlingame limestone, Beede. Kansas Univ. Quart., vol. vii, p. 232. 1898. 

Carboniferous. Nebraska. 
Burlingame limestone, Haworth. Kansas Univ. Greol. Surv., vol. iii, pp. 73,94, 105. 
1898. 

Carboniferous. Kansas. Included in Wabaunsee formation. Exact Syn. Eureka 
limestone. 
Burlingame shales, Beede. Kansas Acad. Sci., Trans., vol. xv, p. 30. 1898. 

Carboniferous. Kansas. 
Burlingame limestone, Beede. Kansas Acad. Sci., Trans., vol. xvi, pp. 82-^. 1899. 

Carboniferous. Kansas, Nebraska. 
Burlington, Hall. Am. Assoc. Adv. Sci., Proc., vol. x, p. 53. 1856. 

Carboniferous. Mississippi Valley. Exact Syn. Encrinital. 
Burlington limestone, Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 92-93. 1858. 

Carboniferous. Iowa. Exact Syn. Encrinital limestone. 
Burlington limestone, Worthen. Iowa Geol. Surv., vol. i, pp. 195-203, 244. 1858. 

Carboniferous. Iowa. 
Burlington limestone, White. Boston Soc. Nat. Hist., Jour., vol. vii, 1859-1863, 
p. 224. 1860. 

Iowa. 
Burlington limestone, Meek and Worthen. Am. Jour. Sci., 2d ser., vol. xxxii, p. 174. 
1861. 

Carboniferous. Illinois. 
Burlington limestone, Hall. Albany Inst., Trans., vol. iv, p. 3. 1864. 

Carboniferous. Mississippi Valley. 
Burlington limestone, Niles and Wachsmuth. Am. Jour. Sci., 2d ser., vol. xlii, 
pp. 95-99. 1866. 

Carboniferous. Iowa. 
Burlington limestone, Worthen. 111. G^ol. Surv., vol. i, pp. 102-108. 1866. 

Carboniferous. Illinois. Included in Lower Carboniferous. 
Burlington limestone, Engelmann. St. Louis Acad. Sci., Trans., vol. ii, p. 189. 1868. 

Lower Carboniferous. Illinois. 
Burlington limestone, Worthen. 111. Geol. Surv., vol. iii, pp. 113-115, 129-130, 140. 
1868. 

■ 

Carboniferous. Illinois. 
Burlington limestone, Green. 111. Geol. Surv., vol. iv, p. 281, 295. 1870. 

Carboniferous. Illinois. 
Burlington limestone, Worthen. 111. Geol. Surv., vol. iv, pp. 12, 29, 55. 1870. 

Carboniferous. Illinois. 
Burlington limestone. White. Iowa Geol. Surv., vol. i, pp. 201-209. 1870. 

Carboniferous. Iowa. Included in Lower Carboniferous. Exact Syn. Encrinital 
limestone. 
Burlington limestone, Worthen. 111. Geol. Surv., vol. v, p. 278. 1873. 

Carboniferous. Illinois. 
Burlington limestone, Sherwood. 2d Pa. Geol. Surv., Kept. G, p. 37. 1875. 

Devonian. Pennsylvania. Included in Chemung. 
Burlington group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 289. 1881. 

Silurian. 
Burlington limestone, Springer. Am. Jour. Sci., 3d ser., vol. xxvii, p. 97. 1884. 

Carboniferous. New Mexico. 
Burlington group, Miller. North American Geol. and Pal., p. 69. 1889. 



I 






WEBKS.J BUELINQAME — BYBON. 81 

Burlington series, Vogdes. N. Y. Acad. Sci., Annals, vol. iv, pp. 71-72. 1889. 

Carboniferous. Mississippi Valley. 
Burlington, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 64. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Burlington limestone, Ladd. Mo. Geol. Surv., Bull., No. 3, pp. 14, 16. 1890. 

Carboniferous. Missouri. 
Burlington limestone, Keyes. Am. Jour. Sci., 3d ser., vol. xliv, pp. 447-462. 1892. 

Carboniferous. Missouri. 
Burlington, Keyes. Greol. Soc. Am., Bull., vol. iii, pp. 283, 292. 1892. 

Carboniferous. Missouri. Included in Osage limestone. Exact Syn. Encrinital 
limestone. 
Burlington limestone, Lesley. 2d Pa. Geol. Surv., Final Kept, vol. ii, p. 1447. 1892. 

Devonian. Pennsylvania. Included in Chemung. 
Burlington limestone, Haworth. Kansas Univ. Quart., vol. ii, pp. 120-121, 125. 1894. 

Carboniferous. Kansas. 
Burlington limestone, Haworth and Kirk. Kansas Univ. Quart. , vol. ii, p. 110. 1894. 

Carboniferous. Kansas. Exact Syn. Gamett limestone. 
Burlington limestone, Keyes. Mo. Greol. Surv., vol. iv, pp. 30, 61-66, 76. 1894. 

Carboniferous. Missouri. Included in Augusta stage. 
Burlington limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Carboniferous. Missouri. Included in Augusta stage. Includes Upper and Lower 
BurUngton. 
Burlington, Gordon. Iowa Greol. Surv., vol. iv, pp. 210-211. 1896. 

Carboniferous. Iowa. 
Burlington limestone, Stewart. Kansas Univ. Quart., vol. iv, pp. 161-162. 1896. 

Carboniferous. Missouri. 
Burlington limestone, Keyes. St. Louis Acad. Sci., Trans., vol. vii, p. 369. 1897; 

Carboniferous. Missouri. 
Burlington limestone, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 103-123. 1898. 

Carboniferous. Missouri. Included in Augusta stage. 
Burnet limestone, Shumard. Am. Jour. Sci., 2d ser., vol. xxxii, p. 214. 1861. 

Silurian. Texas. 
Bumetan system, Comstock. Texas Geol. Surv., 1st Ann. Kept., pp. 266-267. 1890. 

Archean. Texas. Includes Bodeville, Long Mountain, and Lone Grove series. 
Bumetan system, Dmnble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, pp. Iv-lvi. 1890. 

Archean. Texas. Includes Bodeville, Long Mountain, and Lone Grove series. 
Exact syn. Laurentian. 
Bumetian system, Comstock. Texas Geol. Surv., 2d Ann. Rept., pp. 659-560, 
656-668. 1891. 

Archean. Texas. Includes Lone Grove, Long Mountain, and Bodeville series. 
Burnet Branch bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 375. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Butler sandstone. White. 2d Pa. Geol. Surv., Rept. Q, p. 47. 1878. 

Carboniferous. Pennsylvania. Included in Lower Productive series. Exact Syn. 
Upper Freeport sandstone. 
Butler limestone. White. 2d Pa. Geol. Surv., Rept. Q, p. 49. 1878. 

Carboniferous. Pennsylvania. Included in Lower Productive series. Exact Syn. 
Lower Freeport limestone. 
Butler gas sand, Carll. 2d Pa. Geol. Surv., Rept. I^ p. 97. 1890. 

Carboniferous. Pennsylvania. Included in Pocono. 
ron beds, Chamberlin. Geology of Wisconsin, vol. ii, pp. 345-348. 1877. 

Silurian. Wisconsin. Included in Niagara. 

BuU. 191—02 — -6 



82 NOETH AMEBIOAN GEOLOGIC POBMATION NAMES. [bull.1«1. 

B3rron beds, Chamberlin. Geology of Wisconsin, vol. i, p. 187. 1883. 

Silurian. Wisconsin. Included in Niagara. 
Cacapon sandstone, Darton and Taff. U. S. Greol. Surv., Geol. Atlas of U. S., Folio 
No. 28. 1896. 
Silurian. West Virginia, Maryland. 
Cacapon sandstone, Darton. U. S. Greol. Surv., Greol. Atlas of U. S., Folio No. 32. 
1896. 
Silurian. Virginia, West Vii>?inia. Part Syns. Clinton, Medina, Rogers, Nos. 4 
and 5, and Levant. 
Cacapon sandstone, Darton. U. S. Geol. Surv., Greol. Atlas of U. S., Folio No. 61. 
1899. 
Silurian. Virginia, West Virginia. 
Cache Creek group. Upper, Selwyn. Can. Geol. Surv., Kept. 1871-72, pp. 60-61. 
1872. 
Carboniferous. British Columbia. Exact Syn. Marble Canon limestone. 
Cache Creek group, Lower, Selwyn. Can. Geol. Surv., Rept. 1871-72, pp. 61-62. 
1872. 
Carboniferous? British Columbia. 
Cache Creek series, Selwyn. Can. Geol. Surv., Rept. 1876-76, pp. 78-79. 1877. 

Carboniferous. British Columbia. Includes Upper and Lower Cache Creek beds. 
Cache Creek series. Lower, Dawson. Can. Greol. Surv., Rept. 1876-77, pp. 56, 89. 1878. 

Carboniferous. British Columbia. 
Cache Creek series, Dawson. Can. Geol. Surv., Rept. 1877-78, p. 92B. 1879. 

Carboniferous. British Columbia. Included in Carboniferous. 
Cache Creek formation, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 26B, 
37B-49B, 98B, HOB. 1896. 
Carboniferous. British Columbia. Includes Upper and Lower Cache Creek 
groups of earlier reports, Campbell Creek beds (?), Marble Canon limestone, 
etc. Part, Syn. Boston Bar group. 
Cache Lake beds, Becker. U. S. Geol. Surv., Mon., vol. xiii, p. 238. 1888. 

Tertiary. California. Included in Pliocene. ^ 

Cache Lake beds, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 201. 1892. 

Tertiary. California. 
Cache Valley group, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept, 
p. 641. 1879. 
Pleistocene. Utah. Included in Quaternary. 
Cadent series, Rogers. Geol. of Pa., vol. i, pp. 107, 138-140, et seq.; vol. ii, p. 776. 
1858. 
Devonian. Pennsylvania. Exact Syn. Marcellus. 
Cades conglomerate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 16. 
1896. 
Tennessee, North Carolina. Included in Ocoee group. 
Cairo oil sand. White. Geol. Soc. Am., Bull., vol. x, p. 279. 1899. 

Carboniferous. West Virginia. Included in Pottsville? 
Calaveras, Turner. Am. Geol., vol. xi, pp. 309, 426. 1893. 

California. 
Calaveras, Turner. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 11. 1894. 

Carboniferous. California. 
Calaveras formation, Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 446. 
1894. 
Carboniferous. Cahfornia. 
Calaveras, Turner. Am. Geol., vol. xiii, p. 229. 1894. 
Carboniferous. California. Included in Lower Carboniferous. 



WEBKs.] BTBON 0AL0IFEB0U8. 83 

Calaveras, Lindgren. U. 8. Greol. Surv., Geol. Atlas of U. S., Folios Nos. 6, 29, 31. 
1894, 1896. 
Carboniferous. California. Included in Auriferous slate series. 
Calaveras, Lindgren and Turner. U. S. Geol. Surv., Greol. Atlas of U. S., Folios Nos. 
3, 18. 1894-95. 
Carboniferous. California. Included in Auriferous slate series. 
Calaveras, Diller. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 16. 1895. 

Carboniferous. California. 
Calaveras formation. Turner. U. 8. Geol. Surv., 17th Ann. Kept., pt. i, pp. 549, 628. 
1896. 
Carboniferous. California. 
Calaveras formation, Lindgren. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 31. 
1896. 
Carboniferous or older. California. Included in Bed Bock series. 
Calaveras formation, Lindgren. U. S. Geol. Surv., 17th Ann. Kept., pt. ii, pp. 79-88. 
1896. 
Carboniferous. California. Included in Bed Bock series. 
Calaveras formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 39. 
1897. 
Carboniferous. California. Included in Bed Bock series. 
Calaveras formation. Turner. U. S. G«ol. Surv., Geol. Atlas of U. S., Folio No. 37. 
1897. 
Carboniferous or older. California. Included in Bed Bock series. 
Calaveras formation. Turner and Bansome. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 41. 1897. 
Carboniferoufl. California. Included in Bed Bock series. 
Calaveras formation, Turner. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 43. 
1898. 
Carboniferous. California. Included in Bed Bock series. 
Calaveras formation. Turner and Bansome. U. S. Greol. Surv., Geol. Atlas of U. S., 
Folio No. 61. 1898. 
Carboniferous. Califomia. Included in Bed Bock series. 
Calaveras formation, Lindgren. U. S. Gteol. Surv., Geol. Atlas of U. S., Folio No. 66. 
1900. 
Carboniferous. Califomia. Includes Clipper Gap, Delhi, Cape Horn, Belief, and 
Blue Canyon formations. » 

Calaveras formation, Bansome. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 63. 
1900. 
Carboniferous. Califomia. 
Calcareous (or lime) group. Harper. Prel. Bept. Geol. and Agr. Miss., p. 75. 1857. 

Cretaceous. Mississippi. 
Galciferous sandrock, Eaton. Geol. and >.gric. Surv. adjoining the Erie Canal. 
1824. 
Silurian. New York. 
Calciferous sandrock, Vanuxem. Greol. Surv. N. Y., 2d Ann. Bept., pp. 259-261. 
1838. 
Cambrian. New York. 
Calciferous sandstone, Mather. Geol. Surv. N. Y., 5th Ann. Bept., p. 101. 1841. 

Silurian. New York. 
Calciferous, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 230. 1842. 

Included in Lower Silurian. 
Calciferous group, Vanuxem. Geol. of New York, pt. iii, pp. 30-38. 1842. 
Paleozoi<. New York. Included in New York system. Includes Calciferous 
sandrock and Transition sandrock, No. 2, Pennsylvania survey. 



84 NOBTH AMERICAN GEOLOGIC FOBMATION NAMES. [bull. 191. 

Calciferous sandrock, Emmons. Geol. of New York, pt. ii, pp. 105-106, 179, 270, 
310, 332, 361, 380. 1842. 
Paleozoic. New York. Included in New York transition system. Champlain 
group. 
Calciferous group, Mather. Geol. of New York, pt. i, pp. 410-417. 1843. 
Paleozoic. New York. Included in Champlain division. Includes Bamegat 
limestone, Newburg limestone, Warwick limestone, Calciferous and Transition 
sand rocks, and No. 2 Pennsylvania survey. 
Calciferous sandstone, Mather. Geol. of New York, pt. i, pp. 414-416. 1843. 

Paleozoic. New York. Included in Calciferous group. 
Calciferous sandstone. Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 28. 
1843. 
Paleozoic. New York. Included in New York system. 
Calciferous, Emmons. Agric. of New York, vol. i, pp. 118-122. 1846. 

Silurian. New York. Included in Champlain division of New York system. 
Calciferous sandstone, Emmons. Agric. of New York, vol. i, pp. 118-122. 1846. 

New York. Included in New York system, Champlain division. 
Calciferous sandstone, Foster and Whitney. Kept, on Geol. of Lake Superior Dist., 
pt. ii, p. 134, spec. sess. Mar., 1851, Ex. Doc. no. iv. 1861. 
Silurian. Lake Superior region. 
Calciferous sandstone, Shumard. Mo. Geol. Surv., 1st and 2d Ann. Repts., pt. ii, 
p. 160. 1855. 
Silurian. Missouri. Included in Lower Silurian. Includes Saccharoidal sand- 
stone, 2d Magnesian limestone. Exact Syns. St. Peter sandstone. Lower Mag- 
nesian limestone of Iowa, Wisconsin, and Minnesota. 
Calciferous sand rock. Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pt. ii, 
p. 114. 1855. 
Silurian. Missouri. Included in Lower Silurian. Includes 1st Magnesian lime- 
stone, Saccharoidal sandstone, 2d Magnesian limestone, 2d sandstone, 3d Mag- 
nesian limestone, 3d sandstone, 4th Magnesian limestone. 
Calciferous sandstone. Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 49-51. 1858. 

Silurian. Iowa. Exact Syn. Lower Magnesian limestone. 
Calciferous sand group, Shumard. Am. Jour. Sci., 2d ser., vol. xxxii, p. 215. 1861. 

Silurian. Texas. Part. Syn. Lower Magnesian of Mississippi States. 
Calciferous sand rock, Billings. Am. Jour. Sci., 2d ser., vol. xxxii, p. 232. 1861. 

Silurian. Vermont. Part. Syn. Postdam? 
Calciferous, Hall. Am. Jour. Sci., 2d ser., vol. xxxi, p. 222. 1861. 

Silurian. Vermont. 
Calciferous sand rock, Marcou. Boston Soc. Nat. Hist., Proc., vol. viii, 1861-62, 
pp. 241, 244, 249. 1861. 
Silurian. Vermont, Canada. Included in Lower Silurian. 
Calciferous sand rock, Hitchcock. Geol. of Vermont, vol. i, pp. 266-271. 1861. 

Paleozoic. Vermont. Included in Potsdam period. 
Calciferous formation, Logan. Can. Geol. Surv., Kept. 1843-1863, pp. 110-122. 1863. 

Lower Silurian. Canada. 
Calciferous group. Chapman. Can. Inst., new ser., vol. viii, pp. 190-195. 1863. 

Silurian. Canada. Included in Lower Silurian. 
Calciferous, Freeman. 111. Geol. Surv. , vol. iii, pp. 280-282. 1866. 

Silurian. Illinois. 
Calciferous epoch, Irving. Wis. Acad. Sci., Trans., vol. i-ii, 1870-1872, pp. 129-137. 
1872. 
Wisconsin. 
Calciferous, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 59. 1873. 
Silurian. Ohio. 



WEEKS] 0AL01FEB0U8 — CALHOUN. 85 

Calciferous sand rock, Fontaine. Am. Jour. Sci., 3d ser., vol. ix, pp. 365, 423-424. 
1875. 

Silunan. Virginia. 
Calciferous beds, Prime. Am. Jour. Sci., 3d ser., vol. ix, pp. 435, 437, 438, 439. 1875. 

Silurian. Pennsylvania. 
Calciferous mica-schist, Hitchcock. Geol. of New Hampshire, pt. ii, pp. 398-402. 
1877. 

Paleozoic. New Hampshire. 
Calciferous, Endlich. U. S. Geol. and Greog. Surv. of Terr., 11th Ann. Bept, pp. 71, 
102, 119. 1879. 

Calciferous. Wyoming. 
Calciferous, Piatt. 2d Pa. Geol. Surv., Kept. T, pp. 55-59. 1881. 

Silurian. Pennsylvania. 
Calciferous group, Miller. Cin. Soc. Nat Hist., Jour., vol. iv, no. iv, pp. 269, 276. 
1881. 

Ordovician. 
Calciferous, Stevenson. 2d Pa. Geol. Surv., Kept. T*, pp. 93-94. 1882. 

Silurian. Pennsylvania. 
Calciferous formation. Freeman. Economical (jreol, of HI., vol. ii, p. 229. 1882. 

Illinois. 
Calciferous group. Miller. North American G«ol. and Pal., p. 31. 1889. 
Calciferous, Brainerd and Seeley. Am. Mus. Nat. Hist., Bull., vol. iii, p. 1. 1890. 

Silurian. New York, Vermont. 
Calciferous, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian, Arkansas, 
Calciferous formation, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 116-121. 1890. 

Silurian. Arkansas. 
Calciferous formation, Brainerd and Seeley. Am. Mus. Nat. Hist., Bull., vol. iii, 
1890-91, pp. 1-23. 1890. 

Champlain Valley. 
Calciferous limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 115. 1890. 

Silurian. Arkansas. Includes Magnesian limestones of northwestern Arkansas. 
Calciferous, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 108, 116. 1893. 

Ordovician. New York. 
Calciferous sand rock, Darton. N. Y. State Greol. , 13th Ann. Bept. , pp. 417-421. 1894. 

Silurian. New York. 
Calciferous, Gushing. N. Y. State Geol., 13th Ann. Bept, pp. 479-481. 1894. 

Silurian. New York. 
Calciferous, Gushing. Geol. Soc. Am., Bull., vol. vi, p. 287. 1895. 

Cambrian. New York. 
Calciferous, Marcou. Am. Geol., vol. xix, pp. 46-49. 1897. 

Silurian. New York. 
Calciferous sand rock, Prosser and Cumings. N. Y. State Geol., 15th Ann. Bept, 
vol. i, pp. 619-659. 1897. 

Silurian. New York. 
Calciferous sand rock, Cumings. N. Y. State Mus., Bull., vol. vii, p. 419. 1900. 

Silurian. New York. Included in Ordovician. 
Galderwood Neck schists. Smith. Geol. of the Fox Islands, pp. 28-29. 1896. 

Maine. Included in Pre-Silurian. 
Calhoim shales, Haworth. Kan. Univ. Geol Surv., vol. iii, p. 94. 1898. 

Carboniferous. Kansas. Included in Shawnee formation. 
Calhoun sandstone and shale, Beede. Kans. Acad. Sci., Trans., vol. xv, p. 29. 1898. 

Carboniferous. Kansas. 
Calhoun limestone, Beede. Kans. Acad. Sci., Trans., vol. xv, pp. 28-29. 1898. 

Carboniferous. Kansas. 



86 NOBTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Callaway limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30-43. 1894. 

Devonian. Missouri. Included in Hamilton stage. 
Callaway beds, Keyes. Mo. Geol. Surv., vol. viii, p. 340. 1895. 

Devonian. Missouri. 
Callaway limestone, Wheeler. Mo. Greol. Surv., vol. xi, p. 42. 1896. 

Devonian. Missouri. Includes Hamilton group. 
Galooaahatchie beds, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 
1892. 

Pliocene. Florida. Included in Pliocene (Floridian epoch), Floridian group. 
Part. Syn. Floridian group. 
Caloosahatchie beds, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 142. 1892. 

Tertiary. Florida. Included in Pliocene. Exact Syn. Floridian. 
Caloosahatchie beds, Dall. Proc. U. 8. Nat. Mus., vol. xviii, p. 27. 1895. 

Tertiary. Florida. Included in Pliocene. 
Caloosahatchie beds, Dall. U. S. Geol. Surv., 18th Ann. Bept., pt. ii, p. 337. 1898. 

Tertiary. Florida. Included in Pliocene. 
Calumet Beach, Blatchley. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 
for 1897, pp. 34, 35. 1898. 

Glacial. Indiana. 
Gajnbridgre limestone, Andrews. Ohio Greol. Surv., vol. i, pt. i, p. 262. 1873. 

Carboniferous. Ohio. Included in Coal Measures. 
Cambridge limestone, Orton. Ohio Geol. Surv., vol. iii, p. 895. 1878. 

Carboniferous. Ohio. 
Cambridge limestone, Lovejoy. Ohio Geol. Surv., vol. vi, pp. 631, 633. 1888. 

Carboniferous. Ohio. 
Cambridge limestone, White. U. S. G«ol. Surv., Bull. No. 65, p. 93. 1891. 

Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Barren Meas- 
ures, Elk River series. Includes Upper and Lower Cambridge. Part. Syns. 
Pine Creek limestone. Coleman limestone, Black fossilif erous limestone. Brush 
Creek limestone. 
Cambridge slates, Wood worth. Boston Soc. Nat. Hist., Proc., vol. xxvi, 1892-1895, 
p. 125. 1893. 

Massachusetts. 
Cambridge formation. Hill. Harvard Coll. Mus. Comp. ZooL, Bull., vol. xxxiv, 
pp. 57-65. 1899. 

Tertiary. Jamaica. Included in Eocene. Includes Catadupa and Chapelton beds. 
Camden series. Hill, Ark. Geol. Surv., 1888, vol. ii, pp. 48, 177. 1888. 

Tertiary. Arkansas. Includes Arkadelphia shales, Bingen sands, and Cleveland 
County Red sands. 
Camden chert, Safford and Schuchert. Am. Jour. Sci., 4th ser., vol. vii, pp. 429-430. 
1899. 

Devonian. Tennessee. Included in (Lower Oriskany). 
Camden chert, Schuchert. Geol. Soc. Am., Bull., vol. xi, pp. 320-322. 1900. 

Devonian. Tennessee. Included in Oriskany. 
Camp Colorado bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 418. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Camp Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 416-417. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Campbell Creek beds, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 44B-45B, 
129B. 1896. 

Carboniferous. British Columbia. Incmded in Cache Creek group. 
Campophyllum bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 401. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Canaan dolomite, Hobbs. Jour, of Geol., vol. i, p. 726. 1893. 

Silurian. Massachusetts. Included in Mount Washington series. OrdoviciaiL 



WBEK8.] CALLAWAY — CAPE GIBABDEAU. 87 

Canaan, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 32. 1896. 
Carboniferous. Virginia, West Virginia. Exact Syn. Mauch Chunk shales. Part 
Syns. Rogers, No. 11, and Umbral. 
Canaan, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 28. 
1896. 
Cai'boniferous. West Virginia, Maryland. 
Canaan, Taff and Brooks. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 34, 1896. 

Carboniferous. West Virginia. 
Canaan formation, Darton. U. S. Geol. Surv., Greol. Atlas of U. S., Folio No. 61, 1899. 

Carboniferous. Virginia, West Virginia. 
Canadian, Clarke and Schuchert. Science, new ser., vol. x, p. 877. 

Silurian. New York. Includes Beekmantown limestone, Chazy limestone. 
Canal limestone, Ashburner. 2d Pa. Geol. Surv. , Ann. Rept. 1885, p. 446 et seq. 1886. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Cannelton coal. White. U. S. Geol. Surv., Bull. No. 65, p. 97. 1891. 
Carboniferous. West Virginia. Included in Barren Measures, Elk River series. 
Includes Upper and Middle Cannelton. 
Cannelton sandstone, Hopkins. Indiana Dept Greol. and Nat. Res., 20th Ann. Rept. 
(1895), p. 314. 1896. 
Indiana. 
Canon City group, Hayden. U. S. Geol. and Geog. Surv. of Terr., Bull., vol. i, no. 
V, 2d ser., p. 401. 1876. 
Cretaceous or Tertiary. Colorado. . 
Cantera, Kimball. Am. Jour. Sci., 2d ser., vol. xlviii, p. 379 et seq. 1869. 

Cretaceous. Mexico. 
Cantwell conglomerate, Eldridge. U. S. Geol. Surv., 20th Ann. Rept., pt vii, p. 16, 
1900. 
Alaska. 
Canyon division, Cummins. Texas Geol. Surv., 2d Ann. Rept., p. 374. 1891. 

Carboniferous. Texas. Included in Coal Measures. 
Canyon division, Drake. Texas Greol. Surv., 4th Ann. Rept., pp. 387-402. 1893. 
Carboniferous. Texas. Includes Campophyllum bed. Bluff Creek, Home Creek, 
Hog Creek, Chert, No. 7, Clear Creek, Cedarton, Adams Branch limestone, 
Brownwood, Rochelle conglomerate, and Coral limestone beds. 
Canyon conglomerate. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30, 
1896. 
Tertiary. Wyoming. Included in Neocene. 
Csp-au-Gris sandstone, Keyes. Iowa Acad. Sci., Proc., vol. v, p. 60. 1898. 

Ordovician. Iowa. 
Cape Beaufort Coal Measures, Dall and Harris. U. S. Greol. Surv., Bull. No. 84, 
p. 249. 1892. 
Carboniferous. Alaska. 
Cape Cod series, Shaler. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 535. 1898. 
Tertiary and later. Massachusetts. Includes Nashaquitsa and Barnstable series 
and other unnamed later deposits. 
Cape Girardeau limestone. Swallow. Mo. Geol. Surv., 1st and 2d Ann. Rept., 
p. 109. 1855. 
Silurian. Missouri. Included in Upper Silurian. 
Cape Girardeau, Shumard. St. Louis Acad. Sci., Trans., vol. ii, p. 156. 1868. 

Silurian. Missouri. 
Cape Girardeau limestone, Shumard. Mo. Geol. Surv., Rept. 1855-1871, pp. 263, 
264. 1873. 
Silurian. Missouri. Included in Upper Silurian. 
Cape Girardeau limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 
Silurian. Arkansas. 



88 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Cape Girardeau sandstone, Keyes. Mo. Geol. Surv., vol. iv, p. 39. 1894. 

Silurian. Missouri. Included in Hudson shales. 
Gape Horn formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 66. 1900. 

Carboniferous. California. Included in Calaveras formation. 
Gape John sandstones, Ami. Brit. Assoc. Adv. Sci., Bept. 1899, p. 756. 1899. 

Carboniferous. Nova Scotia. 
Cape John formation, Ami. Can. Rec. Sci., vol. viii, pp. 162-163. 1900. 

Carboniferous. Canada. Included in Neo-Carboniferous. 
Gape May formation, Salisbury. N. J. Geol. Surv., Rept. 1897, pp. 19-20. 1898. 

Pleistocene. New Jersey. 
Gapitol limestone, Safford. Geol. of Tennessee, pp. 277-278. 1860. 

Silurian. Tennessee. Included in Nashville formation. 
Gaprina limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, pp. 583, 584. 
1857. 

Cretaceous. Texas. 
Caprina limestone, Marcou. Boston Soc. Nat. Hist., Proc., vol. viii, 1861-62, p. 89. 
1861. 

Cretaceous. Texas. Included in Wpper Cretaceous. 
Caprina chalk and limestone, Hill. Texas Geol. Surv., 1st Ann. Rept., pp. 124-126. 
1890. 

Cretaceous. Texas. Included in Fredericksburg division of Comanche series. 
Caprina limestone. Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 513. 1891. 

Cretaceous. Texas. 
Caprina limestone, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 718-719, 720. 1891. 

Cretaceous. Texas. Included in Fredericksburg and Washita division. 
Caprina limestone, Dumble and Cummins. Am. Geel., vol. ix, p. 349. 1892. 

Cretaceous. Texas. 
Caprina limestone. Hill. Artesian Invest., Final Rept., Ex. Doc. 41, 52d Cong., Ist 
sess., pt. iii, p. 87. 1892. 

Cretaceous. Texas. Included in Trinity division. 
Caprina limestone, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 340-343. 1892. 

Cretaceous. Texas. Included in Fredericksburg division of Lower Cretaceous. 
Caprina limestone, Taff. Texas Geol. Surv., 4th Ann. Rept, pp. 256-257. 1893. 

Cretaceous. Texas. Included in Fredericksburg division of Lower Cretaceous. 
Gaprotina limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, pp. 583, 588. 
1857. 

Cretaceous. Texas. 
Caprotina limestone, Marcou. Boston Soc. Nat. Hist., Proc, vol. viii, 1861-62, p. 89. 
1861. 

Cretaceous. Texas. Included in Upper Cretaceous. (Lower Cretaceous). 
Caprotina limestone, Hill. Texas Geol. Surv., 1st Ann. Rept., pp. 127-128. 1890. 

Cretaceous. Texas. Included in Washita division of Comanche series. Exact 
Syn. Austin marble. 
Caprotina bed, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 719, 727. 1891. 

Cretaceous. Texas. Included in Washita division. 
Gardiola shale, Claypole. Am. Phil. Soc, Proc, vol. xxi, p. 230. 1884. 

Devonian. Pennsylvania. Exact Syn. Portage. 
Gariboo schists. Bowman. Can. Geol. Surv., new ser., vol. iii, pt. i, pp. 22C-25C. 
1889. 

British Columbia. Included in Lower Paleozoic. 
Garlile shale, Gilbert. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 565. 1896. 

Cretaceous. Colorado. Included in Benton group. 
Carlile shale, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 1897. 

Cretaceous. Colorado. Included in Benton formation. 



WEEKS.] OAPE GIBABDEAU — OAETEB's OBEEK. 89 

Carlile shale, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., FoUo No. 58. 1899. 

Cretaceous. Colorado. 
Carlile shale, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Cretaceous. Colorado. 
Garlinville limestone, Worthen. Economical Geol. of 111., vol. i, p. 169, vol. iii, 
pp. 305, 488. 1882. 

Carboniferous. Illinois. Included in Coal Measures. Exact syn. Shoal Creek 
limestone. 
Carlinville limestone, Worthen. Illinois Geol. Surv., vol. vii, pp. 19,48. 1883. 

Carboniferous. Illinois. Included in Coal Measures. 
Carlyle limestone, Haworth. Kansas Univ. Quart., vol. ii, p. 119. 1894. 

Carboniferous. Kansas. 
Carlyle limestone, Haworth and Piatt. Kan. Univ. Quart., vol. ii, p. 117. 1894. 

Carboniferous. Kansas. 
Carlyle limestone, Haworth and Kirk. Kan. Univ. Quart., vol. ii, pp. 109-110. 1894. 

Carboniferous. Kansas. 
Carlyle limestone. Kirk. Kan. Univ. Geol. Surv., vol. i, p. 78. 1896. 

Carboniferous. Kansas. 
Carlyle limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, p. 98. 1896. 

Carboniferous. Kansas. 
Carlyle limestone, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 133-134. 1896. 

Carboniferous. Kansas. 
Carlyle limestone, Haworth. Kan. Univ. G«ol. Surv., vol. i, p. 158. 1896. 

Carboniferous. Kansas. 
Carlyle limestone, Haworth. Kan. Univ. Greol. Surv., vol. iii, p. 104. 1898. 

Carboniferous. Kansas. Exact svn. Gamett limestone. 
Carman ah Point beds, Merriam. Univ. of Cal. Dept. of Geol., Bull., vol. ii, p. 102. 
1896. 

Tertiary. British Columbia. Included in Miocene. 
Cannelo series, Lawson. Univ. of Cal. Dept. of Geol., Bull., vol. i, pp. 1-69. 1893. 

Tertiary. California. Included in Eocene? Part. syn. Tejon? 
Carolinian bed, Conrad. Am. Jour. Sci., 2d ser., vol. xlviii, p. 260. 1867. 

Tertiary. North and South Carolina. 
Carolinian, Heilprin. Phil. Acad. Nat. Sci., Proc, 1882, p. 183-184. 1882. 

Included in Miocene. Includes Upper Atlantic Miocene. Exact syn. Sumpter. 
Carolinian, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 119-120. 1884. 

Included in Tertiary. Includes Upper Atlantic Miocene. Exact syn. Sumpter. 
Carolinian marl, Dall. U. S. Nat. Mus. Proc, vol. xviii, p. 31. 1895. 

Tertiary. North Carolina. 
Caroni series. Wall and Sawkins. Geol. of Trinidad, pp. 41-45. 1860. 

Tertiary. Trinidad. Included in Newer Parian group. 
Caroni beds, Dall. U. S. Geol. Su^^^, 18th Ann. Bept., pt. ii, p. 341. 1898. 

Tertiary. Island of Trinidad. Included in Oligocene. 
Carribean group. Wall and Sawkins. Geol. of Trinidad, pp. 13-33. 1860. 

Trinidad. 
Carrizo Creek oyster bed, Orcutt. Cal. State Min. Bur., 10th Ann. Bept., vol. x, 
p. 915, etc. 1890. 

Tertiary. California. Included in Miocene. 
Carrollton limestone, Williams. Ark. Geol. Surv., 1892, vol. v, pp. 334-337. 1900. 

Carboniferous. Arkansas. 
Carter's Creek limestone, Safford. Geol. of Tennessee, pp. 263-268. 1869. 

Silurian. Tennessee. Included in Trenton or Lebanon. 
Carter's Creek limestone, Wetherby. Cin. Soc. Nat. Hist., Jour., vol. iii, no. ii, p. 147. 
1880. 

Silorian* Kentucky. 



90 NOBTH AMEBIOAN GEOLOGIC FOBMATION NAMES. [bull.19L 

Cascade series, Selwyn. Can. Geol. Surv., Kept. 1871-72. p. 60. 1872. 

British Columbia. 
Cascade series, Dawson. Can. Geol. Surv. , Rept 1877-78, pp. 63B, 67B, etc. 1879. 

Carboniferous? British Columbia. 
Cascade sandstone, White. 2d Pa. Geol. Surv., Rept. G*, pp. 74-79. 1881. 

Devonian. Pennsylvania. Included in Chemung. 
Cascade formation, Wadsworth. Mich., Rept. State Board of Geol. Surv. for 
1891-1892, pp. 63, 66, 84, 99. 1893. 
Archean, Michigan. 
Cascade formation, Weed. U. S. Geol. Surv., Greol. Atlas of U. S., Folios Nos. 55, 56. 
1899. 
Cretaceous. Montana. 
GaseyviUe sandstone, Owen. Ky. Geol. Surv. , vol. iii, p. 21. 1857. 

Carboniferous. Kentucky. Included in Coal Measures. 
Cashaqua shale, HaU. N. Y. Geol. Surv. , 4th Ann. Rept , pp. 390-391, 423. 1840. 

Devonian. New York. 
Cashaqua shale. Hall. N. Y. Geol. Surv., 5th Ann. Rept., p. 165. 1841. 

New York. 
Cashaqua shale. Hall. Greol. of New York, pt. iv, 4th Greol. Dist., pp. 18, 226-227. 
1843. 
Paleozoic. New York. Included in Porta^ group. 
Gason limestone and shale, Williams. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 326- 
329. 1894. 
Silurian. Arkansas. Included in Upper Silurian. 
Cassville plant shale, White. U. S. Geol. Surv., Bull. No. 65, p. 41. 1891. 
Carboniferous. West Virginia. Included in Permo-Carbonif erous, Dunkard Creek 
series. 
Castle limestone, Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 293. 1900. 

Carboniferous. Montana. Included in Madison group. 
Castle Mountain group, McConnell. Can. Geol. Surv., Rept, new ser., vol. ii, 
pp. 15D, 24D-29D. 1887. 
Cambro-Silurian. Canada. 
Castle Mountain group, Dawson. Geol. Soc. Am., Bull., vol. ii, p. 168. 1891. 

Cambrian? British Columbia. 
Castle Mountain group, McConnell. Can. Geol. Surv., new ser., vol. vii, p. 34C. 1896. 

Canada. Included in Lower Paleozoic. 
Catadupa, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, pp. 58-61. 
1899. 
Eocene. Jamaica. Included in Blue Mountain series, Cambridge formation. 
Cat Head beds, Dowling. Ottawa Field Nat. Club, Trans., 1895-96, vol. xi, pp. 
69-70. 1895-96. 
Cambro-Silurian. Canada. 
Catoctin schist, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 10. 1894. 

Algonkian. Virginia, Maryland, West Virginia. 
Catoctin schist, Keith. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 306. 1894. 

Virginia, Maryland. 
Catskill Mountain series, Mather. N. Y. Geol. Surv., 4th Ann. Rept., pp. 227-233. 
1840. 
Devonian. New York. Includes Nos. 8, 9, 10, and 11 of Pennsylvania survey. 
Catskill Mountain series, Mather. N. Y. Geol. Surv. , 5th Ann. Rept. , pp. 75-85. 1841. 
Devonian. New York. Includes Montrose sandstone, Chemimg group, Ithaca 
group, Sherburne flags, Hamilton group, Marcellus shales. 
Catskill group, Vanuxem. Geol. of New York, pt. iii, pp. 186-194. 1842. 
Paleozoic. New York. Included in New York system. Includes Montrose and 
Oneonta sandstones, No. 9 Pennsylvania survey. 



WEEKS.] CASCADE CAT8KILL. 91 

Catskill shaly limestone, Vanuxem. Geol. of New York, pt. iii, pp. 120-122. 1842. 
Paleozoic. New York. Included in New York system. Includes Delthyris 
shaly limestone, Scutella limestone. Part. syn. No. 6, Pennsylvania survey. 
Catskill division, Mather. Geol. of New York, pt. i, pp. 29^316. 1843. 
Paleozoic. New York. Included in New York system. Includes Montrose and 
Oneonta sandstones, Old Red Sandstone Nos.ix, x, xi, xii, Pennsylvania survey. 
Catskill group, Emmons. Agriculture of New York, vol. i, pp. 193-197. 1846. 

Devonian. New York. Included in Catskill division of New York system. 
Catskill division, Emmons. Agriculture of New York, vol. i, pp. 187-197. 1846. 
Devonian. New York. Included in New York system. Includes Chemung, 
Portage, Ithaca and Catskill groups. 
Catskill shaly limestone, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 50. 1846. 
Silurian. New York. Included in No. 6 Pennsylvania Survey, Helderberg series 
(or division) of the New York system. Includes Delthyris shaly limestone 
and Scutella limestone. 
Catskill group, Dawson. Am. Jour. Sci., 2d ser., vol. xxxv, pp. 314-319. 1863. 

Devonian. Canada. Exact Syn. Old Bed Sandstone. 
Catskill, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 71. 1873. 

Devonian. Ohio. 
Catskill formation, Fontaine. Am. Jour. Sci., 3d ser., vol. vii, p. 578. 1874. 

Devonian. West Virginia. 
Catskill, Hotchkiss. A Geographical and Political Summary of Virginia, p. 22. 
1876. 
Devonian. Virginia. Included in Devonian or Old Red Sandstone. Exact syn. 
Ponent (Formation ix-Rogers). 
Catskill, Ashbumer. Am. Phil. Soc, Proc, vol. xvi, p.525. 1877. 

Devonian. Appalachian region. Exact Syn. Ponent. 
Catskill, Ashbumer. 2d Pa. Geol. Surv., Rept. F, pp. 217-220. 1878. 
Devonian. Pennsylvania. Exact syns. Ponent, Old Red Sandstone. 
Catskill, Newberry. Ohio Geol. Surv., vol. iii, p. 21. 1878. 

Carboniferous. Ohio, Pennsylvania. 
Catskill group, Stevenson. Am. Jour. Sci., 3d ser., vol. xv, pp. 423-430. 1878. 

Devonian. Pennsylvania. 
Catskill, Chance. 2d Geol. Surv. of Pa., Rept. G*, pp. 101-103. 1880. 

Devonian. Pennsylvania. Exact syn. No. ix, Ponent. 
CatBkUl, White. 2d Geol. Surv. of Pa., Rept. G\ pp. 9-73. 1881. 
Devonian. Pennsylvania. Includes Mount Pleasant and Elk Mountain shales. 
Cherry Ridge group, Honesdale sandstone, Montrose shale, Paupack sand- 
stone. New Milford group, Starucca shale. Exact syn. No. ix. 
Catskill, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 26-27. 1881. 

Devonian. Pennsylvania. Exact syn. No. ix. 
Catskill, White. " 2d Pa. Geol. Surv., Rept. G«, pp. 91-104. 1882. 
Devonian. Pennsylvania. Includes Mount Pleasant shale, Elk Mountain sand- 
stone, Cherry Ridge group, Honesdale sandstone, Montrose shale, Delaware 
River flags. New Milford shale, Starucca sandstone. 
Catskill, Stevenson. 2d Pa. Geol. Surv., Rept. T^ pp. 73-75. 1882. 

Devonian. Pennsylvania. 
Catskill, White. 2d Pa. Geol. Surv., Rept. G', pp. 54-63. 1883. 

Devonian. Pennsylvania. Exact syn. No. ix. 
Catskill-Chemung, White. 2d Pa. Geol. Surv., Rept. G', pp. 63-67. 1883. 

Devonian. Pennsylvania. Included in Nos. viii-ix. 
Catskill, Claypole. Am. Phil. Soc, Proc, vol. xx, p. 531. 1883. 
Devonian. Pennsylvania. 



92 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrQL.i9l. 

Catflkill, Claypole. 2d Pa. Geol. Surv., Kept. P, pp. 72-78. 1885. 

Devonian. Pennsylvania. Includes Kings Mill sandstone and shale, Dellville 
sandstone. 
Catskill, Ashburner. 2d Pa. Geol. Surv., Rept. R«, pp. 376-377. 1885. 

Devonian. Pennsylvania. Exact syn. No. ix. 
Catflkill, White. 2d Pa. Geol. Surv., Rept. T», pp. 88-99. 1885. 

Devonian. Pennsylvania. 
Catskill sandstone, Winslow. 2d Pa. Geol. Surv., Rept. 1886, pt. iv, pp. 1338, 1344, 
1354, 1357, 1358, 1359, 1361, 1363. 1887. 

Carboniferous. Pennsylvania. Exact syn. No. ix. 
Catskill group. Miller. North American Geol. and Pal., p. 65. 1889. 
Catskill limestone, Hopkins. Ark. Greol. Surv., 1890, vol. iv, p. 52. 1890. 

Silurian. Arkansas. Included in Lower Helderberg. 
Catskill, D'Invilliers. 2d Pa. Geol. Surv., Rept. F*, pp. 44-45. 1891. 

Devonian. Pennsylvania. Exact syn. No. ix. 
Catskill, Williams. U. S. Geol. Surv., Bull., No. 80, p. 121. 1891. 

Devonian. 
Catskill, Stevenson. Am. Assoc. Adv. Sci., Proc., vol. xl, p. 219. 1891. 

Devonian. Appalachian region. 
Catskill, Prosser. Am. Geol., vol. vii, p. 351. 1891. 

Devonian. New York, Pennsylvania. 
Catskill, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1567-1627. 1892. 

Devonian. Pennsylvania. Exact Syn. No. ix. 
Catskill, Stevenson. Am. Geol., vol. ix, p. 6. 1892. 

Devonian. Appalachian region. Included in Upper Devonian, Chemung. 
Catskill, Darton. Am. Jour. Sci., 3d ser., vol. xlv, pp. 208-209. 1893. 

Devonian. New York. Includes Portage and Chemung. 
Catskill, Stevenson. Am. Jour. Sci., 3d ser., vol. xlvi, pp. 330-337. 1893. 

Devonian. New York. 
Catskill sandstone, Williams and Clark. Maryland; its Resources, Industries, and 
Institutions, pp. 70, 72. 1893. 

Devonian. Maryland. Part. Syn. No. ix. 
Catskill group, Hall. N. Y. State Geol., 12th Ann. Rept., pp. 33-35. 1893. 

Devonian. New York. 
Catskill, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Upper Devonian. Includes 
Mount Pleasant red shale, Elk Mountain sandstone and shale. Cherry Ridge 
group, Honesdale sandstone. 
Catskill sandstone, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-878. 
1899. 

Devonian. New York. Included in Chautauquan. 
Catekill, White. W. Va. Geol. Surv., vol. i, p. 205. 1899. 

Devonian. West Virginia. 
Cauda-Galli grit, Vanuxem. Geol. of New York, pt. iii, pp. 127-130. 1842. 

Paleozoic. New York. Included in New York system. Includes Cocktail grit. 
Cauda-Galli grit, Mather. Geol. of New York, pt. i, pp. 341-342. 1843. 

Paleozoic. New York. Included in Helderberg division. 
Cauda-Galli grit. Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 150. 1843. 

Paleozoic. New York. Included in New York system. Exact Syn. Cocktail grit. 
Cauda-Galli grit, Emmons. Agriculture of New York, vol. i, pp. 171-173. 1846. 

Devonian. New York. Included in Helderberg division of New York system. 
Cauda-Galli grit, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 56. 1846. 

New York. Included in Helderberg division of New York system. 



1 OATSKILL OEBAB VALLEY. 98 

Cauda-Galli grit, Cook. Geol. of New Jersey, pp. 162-164. 1868. 

Devonian. New Jersey. 
Cauda-GaUi grit, White. 2d Pa. Geol. Surv., Kept. G«, pp. 121-122. 1882. 

Devonian. Pennsylvania. Included in Upper Helderberg of No. viii. 
Gaoda-Gralli, Olaypole. Am. Phil. Soc., Proc., vol. xx, p. 634. 1883. 

Devonian. Pennsylvania. 
Gaada-Galli grit, Lesley. 2d Pa. Greol. Surv., Final Rept.,^ol. ii, pp. 1040 et seq. 
1892. 

Devonian. Pennsylvania. Included in Oriskany. 
Cauda-OJalli grit, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Comiferous. (Lower Devonian.) 
Gsvaniol group, Drake. Am. Phil. Soc, Proc., vol. xxxvi, p. 371. 1897. 

Carboniferous. Indian Territory. Included in Upper Coal Measures. 
Gave limestone. Swallow. Kan. Greol. Surv., Prelim. Report, pp. 20-21, 75. 1866. 

Carboniferous. Kansas. 
Cave rock series. Swallow. Kan. Greol. Surv., Prelim. Report, p. 20. 1866. 

Carboniferous. Kansas. 
Cave Creek formation, Cragin. Colo. Collie Stud., vol. vi, pp. 3, 27-39. 1896. 

Permian. Kansas. Included in Cimarron series. Includes Medicine Lodge gyp- 
sum and Shimer. 
Cave Creek formation, Cragin. Am. Geol., vol. xix;, pp. 356-358. 1897. 

Permian. Kansas, Oklahoma. Included in Salt Fork division of Cimarron series. 
Includes Shimer gypsum, Jenkins clay and Medicine Lodge gypsum. 
Cave Creek gypsum, Prosser. Kan. Univ. Greol. Surv., vol. ii, p. 94. 1897. 

Permian? Kansas. Included in Upper part of Salt Fork division of the Cimarron 
series. 
Cave Springs sandstone, Haworth. Kan. Univ. Geol. Surv., vol. iii, p. 66. 1898. 

Carboniferous. Kansas. Included in Elk Falls limestone. 
Gsyugra dolomite. Chapman. A Popular and Practical Exposition of the Minerals 
and Geology of Canada, p. 190. 1864. 

Silurian. Canada. Includes Water lime and Tentaculite. Exact Syn. Bertie 
dolomite. 
Cayugan, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Silurian. New York. Includes Salina beds, Rondout Water lime, Manlius lime- 
stone. 
Gedar, Turner. Am. Geol., vol. xiii, p. 231. 1894. 

California. Includes Hosselkus limestone. 
Cedar formation. Smith. Jour, of Geol., vol. ii, pp. 604-609. 1894. 

Trias. California. Includes Swearinger shale and Hosselkus limestone. 
Cedar, Diller. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 15. 1895. 

Juratrias. California. 
Cedar formation. Turner. U. S. Geol. Surv., Greol. Atlas of U. S., Folio No. 43. 
1898. 

Juratrias. California. Included in Bed-Rock series. 
Cedar Hills sandstones, Cragin. Colo. College Stud., vol. vi, pp. 3, 24. 1896. 

Permian. Kansas. Included in Cimarron series. 
Cedar Hills sandstone, Cragin. Am. Geol., vol. xix, p. 355. 1897. 

Permian. Kansas, Oklahoma. Included in Glass Mountain formation of Cimar- 
ron series. 
Cedarton bed, Drake. Texas Greol. Surv., 4th Ann. Rept., p. 391. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Cedar Valley limestone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 314. 
1891. 

Devonian. Iowa. 



94 NORTH AMEBIOAN GEOLOGIO FOSBCATION NAMES. [bull. 191. 

Cedar Valley limestones, Keyes. Iowa Greol. Surv., vol. i, pp. 34-40. 1893. 

Devonian. Iowa. 
Cedar Valley limestones, Norton. Iowa Greol. Surv., voL iv, pp. 166-167. 1895. 

Devonian. Iowa. 
Cedar Valley stage, Calvin. Iowa Geol. Surv., vol. vii, pp. 62-72, 145-160. 1897. 

Devonian. Iowa. 
Cedar Valley limestone, Udden. Cin. Soc. Nat. Hist., Jour., voL xix, no. iii, p. 93. 
1897. 

Devonian. Illinois. 
Cedar Valley limestone, Calvin. Iowa Geol. Surv., voL viii, pp. 230-239. 1898. 

Devonian. Iowa. 
Cedar Valley limestone, Udden. Iowa Geol. Surv., vol. ix, p. 269. 1899. 

Devonian. Iowa. 
Cedar Valley limestone, Williams. Iowa Geol. Surv., vol. x, p. 345. 1900. 

Devonian. Iowa. 
Cedar Valley stage, Norton. Iowa Geol. Surv., vol. ix, p. 457. 1899. 

Devonian. Iowa. 
Oedarville guelph limestone, Orton. Ohio Geol. Surv., Rept Progress in 1870, 
pp. 271, 301. 1871. 

Silurian. Ohio. Included in Niagara series. 
Cedarville beds, Phinney. Indiana Dept. Geol. and Nat Hist., 13th Ann*. Rept. for 
1883, p. 142. 1884. 

Silurian. Indiana. 
Cedarville limestone, Orton. Ohio Greol. Surv., Prelim. Rept. Petroleum and Inflam- 
mable Gas, p. 21. 1886. 

Ohio. Included in Niagara series. 
Cedarville strata, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 6. 1888. 

Ohio. 
Cedarville limestone, Orton. Ohio Geol. Surv., vol. vi, pp. 4, 13. 1888. 

Upper Silurian. Ohio. Included in Niagara group. 
Cedarville limestone, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 11. 1893. 

Silurian. Ohio. Included in Niagara group. Exact Syn. Guelph limestone. 
Cedarville rocks, Foerste. Cin. Soc. Nat. Hist., Jour., vol. xviii, nos. iii, iv, pp. 188, 
190. 1896. 

Silurian. Ohio. 
Central limestone, Safford. Geol. Reconn. of the State of Tenn., 1st Rept., pp. 
154-156. 1856. 

Silurian. Tennessee. Included in Lower Silurian. Includes Nashville, Stone 
River. 
Central limestone, Safford. Geol. of Tenn., pp. 259-261. 1869. 

Silurian. Tennessee. Included in Trenton or Lebanon. 
Ceratops beds. Marsh. Am. Jour. Sci., 3d ser., vol. xxxviii, p. 501. 1889. 

Cretaceous. Rocky Mountains. Included in Upper Cretaceous. 
Ceratops beds, Hatcher. Am. Jour. Sci., 3d ser., vol. xlv, pp. 135-144. 1893. 

Cretaceous or Tertiary. Colorado, Wyoming. 
Ceratops beds, Hatcher. Am. Nat., vol. xxx, pp. 114-118. 1896. 

Tertiary. Rocky Mountain region. 
Ceratops beds. Marsh. U. S. Greol. Surv., Mon., vol. xxvii, p. 477. 1896. 

Cre^^aceous. Colorado. 
Cerro Gordo moraine, Leverett. U. S. Geol. Siu^., Mon., vol. xxxviii, pp. 218-222. 
1899. 

Pleistocene. Illinois. 
Chadron formation, Darton. U. S. Geol. Surv., 19th Ann. Rept., pt. iv. pp. 736, 759. 
1899. 

Tertiary. Nebraska. Included in Oligocene? 



WEKK8.J CEDAR VALLEY CHARLESTON. 95 

Chaelites limestone, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 202. 1874. 

Carboniferous. Missouri. Included in Coal Measures. 
Clia£Bji bed, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 410-412. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Chalky marl beds. Hill. Ark. Geol. Surv.^ 1888, vol. ii, p. 84. 1888. 
Cretaceous. Arkansas. Included in Upper Cretaceous or Exogyra castata series. 
Includes Marlbrook-Columbus or Gryphsea vesicularis chalk marls, Brown- 
stone marls. White Cliff chalk. Rocky Comfort chalk. 
Chaniberlain shales, Walcott. Geol. Soc. Am., Bull., vol. x, pp. 199, 206. 1899. 

Algonkian? Pre-Cambrian. Montana. Included in Belt terrane. 
Chamberlain shale. Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 282. 1900. 

Algonkian. Montana. Included in Belt terrane. 
Champion shell beds, Cragin. Am. Geol., vol. xvi, p. 368. 1895. 

Cretaceous. Kansas. Included in Belvidere beds. 
Champion shell bed, Prosser. Kan. Univ. Geol. Surv., vol. ii, pp. 114-115. 1897. 
Lower Cretaceous. Kansas. Included in Comanche series, Fredericksburg divis- 
ion. Exact Syn. Comanche Peak limestone. 
Champlain group, Emmons. Geol. of New York, pt. ii, pp. 99-126. 1842. 
Paleozoic. New York. Included in New. York Transition system. Includes 
Potsdam sandstone, Calciferous sand rock, Chazy limestone, Birdseye lime- 
stone, Trenton limestone, Utica slate, Lorraine shales, Grey sandstone. 
Champlain division, Mather. Geol. of New York, pt. i, pp. 366-421. 1843. 
Paleozoic, New York. Included in New York system. Includes Hudson River 
group, Utica slate, Trenton, Black River limestone, Calciferous group, Pots- 
dam sandstone. 
Champlain division, Emmons. Agriculture of New York, vol. i, pp. 117-141. 1846. 
New York. Includes Potsdam and Calciferous sandstone, Chazy and Birdseye 
limestones. Isle Lamotte marble, Trenton limestone, Utica slate, Lorraine shales, 
and Oneida conglomerate. 
Champlain, Perry. Boston Soc. Nat. Hist., Proc, vol. xi, 1866-68. p. 352. 1867. 

Vermont. 
Champlain, Hitchcock. Geol. Soc. Am., Bull., vol. vii, pp 2, 3. 1895. 

Pleistocene. Vermont, New Hampshire, etc. Exact Syn. Mecklenburg stage. 
Champlain clays, Emerson. U. S. Geol. Surv., Mon. vol. xxix, pp. 697-718. 1898. 

Pleistocene. Massachusetts. Included in Glacial. 
Champlainic, Clarke and Schuchert. Science, new ser., vol. x, pp. 875-876. 1899. 

Silurian. New York. Exact Syn. Ordovician. 
Chanute shales, Haworth and Kirk. Kan. Univ. Quart., vol. ii, p. 109. 1894. 

Carboniferous. Kansas. 
Chapelton, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, pp. 61-65. 
1899. 
Eocene. Jamaica. Included in Blue Mountain series, Cambridge formation. 
Chapman dolomite, Cragin. Am. Geol., vol. xix, p. 358. 1897. 
Permian. Kansas, Oklahoma. Included in Dog Creek formation of Cimarron 
series. 
Chapman sandstone, Williams. U. S. Geol. Surv., Bull. No. 165, p. 78. 1900. 

Devonian. Maine. 
Chapman sandstone, Gregory. U. S. Geol. Surv., Bull. No. 165, p. 133. 1900. 

Maine. 
Charette limestone, Broadhead. Mo. Geol. Surv., Rept. 1855-1871, p. 49. 1873. 

Silurian. Missouri. Included in Trenton limestone. 
Chariton conglomerate. Bain. Iowa Geol. Surv., vol. v, pp. 394-398. 1896. 

Carboniferous, Iowa. Included in Des Moines stage. 
Charleston sandstone, Campbell and Mendenhall. U. S. Geol. Surv., 17th Ann. 
Rept, pt. ii, p. 508. 1896. 
Carboniferous. West Virginia. Exact Syn. No. xiv. Lower Barren Measures. 



96 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Charleston sandstone, Campbell. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 69. 1900. 
Carboniferous. West Vii^nia, Ohio. Included in Elk River series. 
Chase formation, Prosser. Jour, of Geol., vol. iii, pp. 771-786. 1895. 

Permo-Carboniferous. Kansas. 
Chase limestones, Cragin. Colo. College Stud., vol. vi, pp. 3, 7. 1896. 

Permian. Kansas. Included in Big Blue series. 
Chase formation, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 180-187. 1896. 

Carboniferous. Kansas. Included in Permian. 
Chase formation, Beede. Kan. Univ. Quart., vol. ix, p. 198. 1900. 

Carboniferous. Kansas. 
COiattahoocliee series, Spencer. Gra. Geol. Surv., IstRept of Prog., p. 57. 1891. 

Tertiary. Georgia. Included in Miocene. 
Chattahoochee series, Langdon. Ga. Geol. Surv., 1st Rept. of Prog., p. 97. 1891. 

Tertiary. Georgia. 
Chattahoochee group, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 
1892. 
Miocene. Greorgia, Florida. Included in Chipola epoch. Includes Hawthorne 
and Ocheesee beds. 
Chattahoochee group, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 83. 1892. 

Tertiary. Georgia. 
Chattahoochee, Foerste. Am. Jour. Sci., 3d ser., vol. xlviii, pp. 41-54. 1894. 

Tertiary. Georgia, Florida. Included in Miocene. 
Chattahoochee limestone, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, 
pp. 147, 162. 1894. 
Tertiary. Florida. Included in Miocene. Includes Hawthorne beds, Tampa 
limestone. 
Chattanooga black shale, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Devonian. Tennessee. Exact syn. black shale. 
Chattanooga black shale, Hayes. Ala. Geol. Surv., Bull., vol. iv, p. 45. 1892. 

Devonian. Alabama. 
Chattanooga, Spencer. Ga. Geol. Surv., The Paleozoic group, p. 50. 1893. 

Devonian. Georgia. 
Chattanooga black shale, Hayes. Geol. Soc. Am., Bull., vol. v, p. 470. 1894. 

Devonian. Alabama. 
Chattanooga black shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 12. 1894. 
Devonian. Kentucky, Virginia, Tennessee. 
Chattanooga black shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folios 
Nos. 2, 4, 6, 8, 19, 20, 21, 22, 35. 1894-95, 1896. 
Devonian. Georgia, Tennessee. Alabama. 
Chattanooga black shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios 
Nos. 16, 25, 27. 1895, 1896. 
Devonian. Tennessee, North Carolina. 
Chattanooga shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 
1896. 
Devonian. Tennessee. 
Chattanooga black shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 35. 1896. 
Devonian. Alabama. Part. syn. Black shale. 
Chattanooga shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
46, 47. 1898. 
Devonian. Kentucky. 



WEEKS] CHARLESTON CHAZY. 97 

Chattanooga shale, Campbell. U. S. Geol. Srrv., Geol. Atlas of U. S., Folio No. 53. 
1899. 

Devonian. Tennessee. 
Chattanooga shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 
1899. 

Devonian. Virginia, Tennessee. 
Chautauquan, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Devonian. New York. Includes Chemung beds. 
CQiazy limestone, Emmons. Geol. of New York, pt. ii, pp. 107, 315. 1842. 

Paleozoic. New York. Included in New York Transition system, Champlain 
group. 
Chazy, Emmons. Agriculture of New York, vol. i, p. 122. 1846. 

Silurian. New York. Included in Champlain division of New York system. 
Chazy limestone, Emmons. Agriculture of New York, vol. i, p. 122. 1846. 

New York. Included in New York system, Champlain division. 
Chazy limestone. Hall. Am. Jour. Sci., 2d ser., vol. xvii, pp. 181-193. 1854. 

Silurian. Michigan. 
Chazy limestone, Hitchcock. Geol. of Vermont, vol. i, pp. 272-279. 1861. 

Paleozoic. Vermont. Included in Trenton period. Exact syn. Isle La Motte 
limestone. 
Chazy formation, Logan. Can. Geol. Surv., Kept. 1843-1863, pp. 123-135. 1863. 

Lower Silurian. Canada. 
Chazy formation, Chapman. Can. Inst., new ser., vol. viii, pp. 195-196. 1863. 

Silurian. Canada. Included in Lower Silurian. 
Chazy formation, Bell. Can. Geol. Surv., Rept. 1863-1866, p. 170. 1866. 

Silurian. Canada. 
Chazy, Smith. Ala. Geol. Surv., Rept. 1875, pp. 24, 96, 111. 1876. 

Silurian. Alabama. 
Chazy, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 55-59. 1881. 

Silurian. Pennsylvania. 
Chazy group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 270, 279. 1881. 
Chazy limestone, Linney. Ky. Geol. Surv., Geol. of Garrard Co., p. 10. 1883. 

Silurian. Kentucky. Included in Canadian period. 
Chazy limestone, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Mont- 
gomery counties. 1884. 

Silurian or Cambrian. Kentucky. Included in Canadian period. 
Chazy limestone, Whitfield. Am. Mus. Nat. Hist., Bull., vol. i, 1881-1886, p. 295. 
1886. 

Vermont. 
Chazy, Brainerd and Seeley. Am. Geol., vol. ii, pp. 323-330. 1888. 

Silurian. New York. 
Chazy formation, Sowter. Ottawa Field Nat. Club, Trans., 1888-89, vol. iv, pp. 
11-15. 1888, 1889. 

Silurian. Canada. 
Chazy group, Miller. North American Geol. and Pal., p. 36. 1889. 
Chazy, Hopkins. Ark. Geol. Surv., 1890, vol. iv. p. 50. 1890. 

Silurian. Arkansas. 
Chazy limestone, Orton. Ky. Geol. Surv., Rept. on Petroleum, etc., p. 128. 1891. 

Silurian. Kentucky. 
Chazy limestone. Gushing. N. Y. State Geol., 13th Ann. Rept., pp. 481-483. 1894. 

Silurian. New York. 
Chazy, Gushing. Geol. Soc. Am., Bull., vol. vi, p. 286. 1895. 

Ordovician. New York. 

Bull. 191—02 7 



98 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bill. 191. 

Chazy, liraiiiertl and Seeley. Am. Mus. Nat. Hist., Bull., vol. viii. pp. 305-315. 1896. 

Silurian. Vennont and New York. 
Chazy linioHtone, Cusliing. N. Y. State (ieol., 15th Ann. Kept., vol. i, p. 513. 1897. 

Silurian. New York. 
Chazy, Marcou. Am. (leoI., vol. xi.x, pp. 4(5-49. 1897. 

Silurian. New York. 
Cliazy limestone, Clarke and Sidiuchert. Science, new ser., vol. x, pp. 876-877. 
1899. 

Silurian. New York. Included in Canadian. 
CQiehalis, Lawson. Am. (ieol., vol. xiii, p. 437. 1894. 

Tertiary. Washington. Included in ik>ceue or Miocene. 
Chemung group. Hall. N. Y. (ieol. Surv., 3d Ann. Rept., pp. 322-324, 326. 1839. 

Devonian. New York. 
Chemung group, Hall. N. Y. Geol. Surv., 4th Ann. Rept. pp. 402-409. 1840. 

Devonian. New York. 
Chemung, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, pp. 232, 235. 1842. 

Included in Devonian. Includes Middle division. 
Chenmng group. Hall.- Am. Jour. Sci., 1st ser., vol. xlii, p. 54. 1842. 

Devonian. Ohio. 
Chemung group, Vanuxem. (tcoI. of New York, pt. iii, pp. 179-185. 1842. 

Paleozoic. New York. Included in New York svstem. 
Chemung group, Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 251-261. 
1843. 

Paleozoic. New York. Included in New York system. Includes Ithaca group, 
No. 9 Pennsylvania survey. 
Chemung group, Emmons. Agriculture of New York, vol. i, pp. 190-193. 1846. 

Devonian. New York. Included in Catskill division of New York system. 
Chemung, Whittlesey. Am. Ass(Xi. Adv. Sci., Proc, vol. v, p. 207. 1851. 

Devonian. Ohio. 
Chemung group, Meek. Mo. (Jeol. Surv., 1st and 2ud Ann. Repts., pt. ii, p. 101. 
1855. 

Carboniferous. Missouri. Includes Chouteau limestone. 
Chemung, Swallow. Mo. Geol. Surv., 1st and 2nd Ann. Repts., pp. 101, 176. 1855. 

Devonian. Missouri. Includes Chouteau, Vermicular, and Lithographic. 
Chemung, Swallow. Am. Assoc. Adv. Sci., Proc, vol. ii, p. 9. 1857. 

Devonian. Missouri. Includes Chouteau, Vermicular sandstone, and Lithographic 
limestone. 
Chenuing group. Hall. Iowa Geol. Surv., vol. i, p. 88. 1858. 

Devonian. Iowa. 
Chemung group, Worthen. Iowa Geol. Surv., vol. i, p. 245. 1858. 

Devonian. Iowa. 
Chenmng group, Whitney. Iowa Geol. Surv., vol. i, p. 376. 1858. 

Devonian. Iowa. 
Chemung group. Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 88-91. 1858. 

Devonian. Iowa. 
Chemung group, Worthen. Iowa Geol. Surv., vol. i, pt. i, pp. 245-246. 1858. 

Devonian. Iowa. 
Chemung group, Whitney. Iowa Geol. Surv., yoI. i, pt. i, pp. 376-378. 1858. 

Devonian. Iowa. 
Chemung group. Hall and Whitney (review). Am. Jour. Sci., 2d ser., vol. xxvii, 
p. 113. 1859. 

Devonian. Iowa. 
Chemung group, White and Whitfield. Boston Soc. Nat. Hist., Proc, vol. viii, 
1861-62, p. 289. 1862. 

Iowa. 



W-EK8.] CHAZY CHEMUNG. 99 

Chemung group, Dawson. Am. Jour. Sci., 2d ser., vol. xxxv, pp. 314-319. 1863. 

Devonian. Canada. 
Chemung, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 69. 1873. 

Devonian. Ohio. 
Chemung, Hall. Am. Assoc. Adv. Sci., Proc., vol. xxiv, p. 80. 1875. 

Devonian. New York. 
Chemung, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 88-95. 1875. 

Devonian. Pennsylvania, New York. Exact syn. No. viii. 
Chemung, Hotchkiss. A Geographical and Political Summary of Virginia, p. 22. 1876. 

Devonian. Virginia. Included in Devonian or Old Red Sandstone. Exact syn. 
Vergent ( Formation ix, Rogers) . 
Chemung, Ashbumer. Am. Phil. Soc, Proc., vol. jcvi, pp. 526, 549. 1877. 

Devonian. Appalachian region. Exact syn. Vergent. 
Chemimg group, Stevenson. Am. Jour. Sci., 3d ser., vol. xv, pp. 423-430. 1878. 

Devonian. Pennsylvania. Part. syns. Ponent series and Vergent series. 
Chemung, Newberry. Ohio Geol. Surv., vol. iii, p. 21. 1878. 

Carboniferous. Ohio, Pennsylvania. 
Chemung group, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 289. 1881. 

Silurian. 
Chemung, White. 2d Pa. Geol. Surv., Rept. G^ pp. 73-79. 1881. 

Devonian. Pennsylvania. Includes Cascade sandstone. Part. syn. No. viii. 
Chemung, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 27-29. 1881. 

Devonian. Pennsylvania. 
Chemimg, White. 2d Pa. Geol. Surv., Rept. Q*, pp. 117-118. 1881. 

Devonian. Pennsylvania. 
Chemung, White. 2d Pa. Geol. Surv., Rept. G«, pp. 104-106. 1882. 

Devonian. Pennsylvania. Included in No. viii. 
Chemung group, Williams. Am. Jour. Sci., 3d ser., vol. xxv, pp. 97-104. 1883. 

Devonian. Mississippi Valley, New York. 
Chemung, White. 2d Pa. Geol. Surv., Rept. G', pp. 67-83. 1883. 

Devonian. Pennsylvania. Includes Portage. Exact syn. No. viii. 
Chemung, Ewing. 2d Pa. Geol. Surv., Rept. T^, pp. 433-434. 1884. 

Devonian. Pennsylvania. Exact syn. No. viiic. 
Chemung, Lilley. Am. Phil. Soc, Proc, vol. xxi, p. 304. 1884. 

Devonian. Pennsylvania. 
Chemung, Claypole. 2d Pa. Geol. Surv., Rept. P, pp. 70-72. 1885. 

Devonian. Pennsylvania. 
Chemung, White. 2d Pa. Geol. Surv., Rept. T^ pp. 99-104. 1885. 

Devonian. Pennsvlvania. 
Chemung, Ashbumer. 2d Pa. Geol. Surv., Rept. R^.p. 377. 1885. 

Devonian. Pennsylvania. Exact syn. Vergent. 
Chemung, Hall. Am. Assoc Adv. Sci., Proc, vol. xxxiii, pt. ii, p. 417. 1885. 

Devonian. Pennsylvania, New York. 
Chemung, Stevenson. Am. Phil. Soc, Proc, vol. xxi, pp. 135, 139. 1885. 

Devonian. Virginia. 
Chemung, Lilley. Am. Phil. Soc, Proc, vol. xxiii, p. 291. 1886. 

Devonian. Pennsylvania. 
Chemung, Williams. U. S. Geol. Surv., Bull., No. 41, pp. 51-104. 1887. 

Devonian. New York. 
Chemung, Stevenson. Am. Phil. Soc, Proc, vol. xxiv, p. 81. 1887. 

Devonian. Virginia. 
Chemung group. Miller. North American Geol. and Pal., p. 64. 1889. 
Chemung, Stevenson. Am. Assoc. Adv. Sci., Proc, vol. xl, p. 219. 1891. 

Devonian. Appalachian region. Includes Portage, Chemung, Catskill. 



17\)}S6 



100 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Chemung, Williams. U. S. Geol. Surv., Bull., No. 80, p. 121. 1891. 

Devonian. 
Chemung, Harris. Am. Cieol., vol. vii, p. 166. 1891. 

Devonian. New York. 
Chemung, Pro8^»er. Am. Jour. Sci., 3d ser., vol. xliv, pp. 210-221. 1892. 

Devonian. Pennsylvania. 
Chemung, Lesley. 2(1 Pa. (leol. Surv., Final Kept., vol. ii, pp. 1371-1566. 1892. 

Devonian. Pennsylvania. Exact syn. No. viiig. 
Chemung, Stevenson. Am. Geol., vol. ix, p. 6. 1892. 

Devonian. Appalachian region. Included in Upper Devonian. Includes Portage, 
Chemung, Catskill. 
Chemung, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 100-108, 116. 1893. 

Devonian. New York. 
Chemung formation, Darton. Am. Jour. Sci., 3d ser., vol. xlv, pp. 203-209. 1893. 

Devonian. New York. 
Chemung, Williams and Clark. Maryland: Its Resources, Industries, and Institu- 
tions. 1893. 

Devonian. Maryland. Part. syn. No. viii. 
Chemung group. Hall. N. Y. State Geol., 12th Ann. Rept., pp. 33-35. 1893. 

Devonian. New York. 
Chemung, Prosser. U. S. Geol. Surv., Bull., No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Upper Devonian. Includes 
Montrose shales, Delaware flags, New Milford shale, Starucca sandstone. 
Chemung series, Prosser. N. Y. State Geol., 15th Ann. Rept., pp. 83-222. 1897. 

Devonian. New York. 
Chemung group, Luther. N. Y. State Geol., 15th Ann. Rept., pp. 284-286. 1897. 

Devonian. New York. 
Chemung, Prosser. Roch. Acad. Sci., Proc, vol. ii, pp. 50-124. 1898. 

Devonian. New York. 
Chemung group, Luther. N. Y. State Geol., 16th Ann. Rept., p. 225. 1899. 

Devonian. New York. 
Chemung, Prosser. N. Y. State Geol., 17th Ann. Rept, pp. 67-315; N. Y. State 
Mus., 51st Ann. Rept., vol. ii, pp. 67-315. 1899. 

Devonian, New York. 
Chemung beds. White. W. Va. Geol. Surv., vol. i, p. 208. 1899. 

Devonian. West Virginia. 
Chengrwatona series, Hall. Am. Assoc. Adv. Sci., Proc, vol. xlix, p. 191. 1900. 

Great Lakes region. 
Cherokee slates, Kerr. N. C. Geol. Surv., Rept. 1866-67, p. 29. 1869. 

North Carolina. Exact, syn. Linville slates. 
Cherokee shales, Haworth and Kirk. Kan. Univ. Quart, vol. ii, pp. 105-106. 1894, 

Carboniferous. Kansas. 
Cherokee shales, Haworth. Kan. Univ. Quart., vol. iii, pp. 272-273. 1895. 

Carboniferous. Kansas, etc. 
Cherokee shales, Haworth. Am. Jour. Sci., 3d ser., vol. i, pp. 455-456. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Cherokee shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 150-151, 221-224. 
1896. 

Carboniferous. Kansas. 
Cherokee shales, Adams. Kan. Univ. Geol. Surv., vol. i, pp. 18-21. 1896. 

Carboniferous. Kansas. Included in Coal Measures. 
Cherokee shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 37-40. 1896. 

Carboniferous. Kansas. 
Cherokee shales, Kirk. Kan. Univ. Geol. Surv.,^ vol. i, pp. 72-73. 1896. 

Carboniferous. Kansas. 



WEEKS] CHEMUNG CHESAPEAKE. 101 

Cherokee shale, Marbut. Mo. Geol. Surv., vol. xir, pt. ii, pp. 32-33,34-70,119-121, 
1 24-156, 162-163, 209, 212, 267. 1898. 

Upper Carboniferous. Missouri. Included in Des Moine*^ series. 
Cherokee shales, Shepard. Mo. Geol. Surv., vol. xii, pp. 195, 197. 1898. 

Lower Carboniferous. Missouri. 
Cherokee stage, Shepard. Mo. Geol. Surv., vol. xii, p. 49. 1898. 

Upper Carboniferous. Missouri. Included in Des Moines series. Includes Gray- 
don sandstone. 
Cherokee shales, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 21-30, 89, 92, 94, 99. 
1898. 

Carboniferous. Kansas. Included in Lower Coal Measures. 
Cherokee shales, K eyes. Iowa Acad. Sci., Proc, vol. vii, p. 84. 1900. 

Carboniferous. Mississippi Valley. Included in Coal Measures. 
Cherry limestone bed, Drake. Texas Geol. Surv., 4th Ann. Rept, p. 395. 1893. 

Carboniferous. Texas. Included in Canyon Division. 
Cherry Creek beds, Peale. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 24. 1896. 

Algonkian. Montana. 
Cherry Ridge group, White. 2d Pa. Geol. Surv., Rept. G^ pp.* 64-66. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Cherry Ridge group, AVhite. 2d Pa. Geol. Surv., Rept. G«, pp, 95-97. 1882. 

Devonian. Pennsylvania. Included in Catskill. 
Cherry Ridge conglomerate, Lesley. 2d Pa. Geol. Surv., HiRal Rept., vol. ii, pp. 
1579-1580. 1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 
Cherry Ridge group, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Catskill (Upper Devonian). 
Cherryvale shales, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 47-48, 102. 1898. 

Carboniferous. Kansas. 
Chesapeake, McGee. U. S. Geol. Surv., 12th Ann. Rept., pt. i, p. 410. 1891. 

Tertiary. Atlantic Coastal Plain. Included in Miocene. 
Chesapeake, Darton. (ieol. Soc. Am., Bull., vol. ii, pp. 431, 435, 443. 1891. 

Tertiary. Virginia, Maryland. Included in Miocene. 
Chesapeake, Dall and Harris. U. S. Geol. Soc, Bull. No. 84, pp. 54, 68, 123. 1892. 

Tertiary. Atlantic coast. 
Chesapeake, Darton. U. S. Geol. Surv., Baltimore, Md., Geologic Sheet. 1892. 

Tertiary. Maryland. Included in Neocene. 
Chesapeake group, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Miocene. " Virginia, Maryland, Florida, etc. 
Chesapeake, Williams and Clark. Maryland: Its Resources, Industries, and Insti- 
tutions, pp. 77, 80-82. 1893. 

Tertiary. Maryland. Included in Miocene. 
Chesapeake, McGee, Williams, and Darton. Int. Cong, of Geol., 5th sess., pp. 236, 
246-247. 1893. 

Tertiary. Maryland, District of Columbia. 
Chesapeake, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, pp. 147, 167. 
1894. 

Tertiary. Florida. Included in Miocene. 
Chesapeake, Clark. N. J. Geol. Surv., Rept. 1894, p. 339. 1894. 

Neocene. New Jersey. 
Chesapeake, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 13, 23. 1894, 
1896. 

Tertiary. Virginia, Maryland. Included in Neocene. 
Chesapeake, Clark. Johns Hopkins Univ. Circ, No. 121, pp. 6-8. 1895. 

Tertiary. New Jersey. Included in Miocene. 



102 NOBTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Chesapeake formation, Shattuck. Johns Hopkins Univ. Circ, No. xv, p. 15. 1895. 

Neocene. N^^w Jersey. 
Chesapeake, Darton. U. S. Geol. Surv., Bull., No. 138, pp. 41, 119, 126, 163. 1896. 

Tertiary. Atlantic Coastal Plain. Included in Neocene. 
Chesapeake, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Neocene. Maryland. 
Chesapeake formation, Clark. Md. Geol. Sur\\, vol. i, p. 197. 1897. 

Tertiary. Maryland. Included in Neocene. 
Cheshire quartzite, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 

Cambrian. Massachusetts. Part. syn. Stockbridge limestone. 
Cheshire quartzite, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 78. 1899. 

Cambrian. Massachusetts. 
Chester, Swallow. Am. Assoc. Adv. Sci., Proc, vol. ii, p. 5. 1857. 

Carboniferous. Missouri. 
Chester, Worthen. Am. Assoc. Adv. Sci., Proc, vol. xiii, p. 312. 1860. 

Carboniferous. Illinois. 
Chester group, Worthen. 111. Geol. Surv., vol. i, pp. 41-42, 77-83, 284-292, 305-308, 
321. 1866. 

Carboniferous. Illinois. Includes Ferruginous sandstone. 
Chester group, Engelmann. 111. Geol. Surv., vol. i, pp. 381-397, 414-417, 438-447, 
460-477. 1866. 

Carboniferous. Illinois. 
Chester group, Worthen. 111. Geol. Surv., vol. iii, pp. 44-50, 65-68. 1868. 

Carboniferous. Illinois. 
Chester limestone, Engelmann. St. Louis Acad. Sci., Trans., vol. ii, p. 189. 1868. 

Lower Carboniferous. Illinois. 
Chester group. Broad head. Mo. Geol. Surv., Rept. 1873-74, p. 24. 1874. 

Carboniferous. Missouri. Included in Lower Carboniferous, Mountain limestone. 
Chester group, Cox. 111. Geol. Surv., vol. vi, pp. 221-223. 1875. 

Carboniferous. Illinois. 
Chester group, Norwood. Ky. Geol. Surv., vol. i, new^ ser., pp. 366-371. 1876. 

Carboniferous. Kentucky. Included in Lower Carboniferous. Exact syn. 
Chester group of Illinois. 
Chester group, Shaler. Ky. Geol. Surv., vol. iii, new ser., pp. 182-183. 1877. 

Carboniferous. Kentucky. Included in Sub-Carboniferous limestone. 
Chester group. Smith. Ala. Geol. Surv., Rept. 1877-78, pp. 16, 21, 24, 37, 39, 64. 
1879. 

Carboniferous. Alabama. Exact syn. Mountain limestone. 
Chester group, McCalley. Ala. Geol. Surv., Rept. 1879-80, pp. 77, 128, 133, 144 
1881. 

Carboniferous. Alabama. Included in Sub-Carboniferous. Exact syn. Moun- 
tain limestone. 
Chester group, Worthen. 111. Geol. Surv., vol. vii, pp. 34 et seq. 1883. 

Carboniferous. Illinois. Included in Lower Carboniferous. 
Chester series, Vogdes. N. Y. Acad. Sci., Annals, vol. iv, p. 73. 1889. 

Carboniferous. Mississippi Valley. 
Chester, Ladd. Mo. Geol. Surv., Bull., No. 3, pp. 14, 15. 1890. 

Lower Carboniferous. Missouri. 
Chester, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Chester shale and liiucfoLuiie, Sullivan. Ky. Geol. Surv. (Proctor), Geol. of Jackson 
and .Rockcastle counties. 1891. 

Carboniferous. Kentucky. 



l^ WEEKS] CHESAPEAKE CHEYENNE. 103 

Chester group, Orton. Ky. Geol. Surv., Rept. on Petroleum, etc., p. 135. 1891. 
Carboniferous. Kentucky. ^ 

'^ Chester, Nickles. Am. Geol., vol. vii, p. 47. 1891. 

Carboniferous. Illinois. Included in Sub-Carboniferous. 
Chester amphibolite, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley 
sheet. 1892. 
Silurian. Massachusetts. 
Chester shale, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 295, 297. 1892. 

Lower Carboniferous. Missouri. Exact syn. Kaskaskia. 
Chester shales, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 76. 1894. 

Lower Carboniferous. Missouri. Included in Kaskaskia stage. 
Chester amphibolite, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 

Cambrian? Massachusetts. Part. syn. Stockbridge limestone. 
Chester amphibolite, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 
1898. 
Silurian. Massachusetts. 
Chester amphibolite, Emerson. IT. S. Geol. Surv., Mon., vol. xxix, pp. 78-116. 1898. 

Silurian. Massachusetts. Included in Lower Silurian. 
Chesterfield group, Shaler and Wood worth. U. S. Geol. Surv., 19th Ann. Rept., 
pt. ii, pp. 435-436. 1899. 
Juratrias. Virginia. Includes Otterdale sandstone and Vinita beds. 
Chester Valley limestone, Lesley. 2d. Pa. Geol. Surv., Rept. C*, pp. 113-135. 
1883. 
Silurian. Pennsylvania. Exact syns. Formation No. ii. Auroral; Calciferous, 
Chazy, and Trenton of New York. 
Chestnut Hill group. Hall. 2d Pa. Geol. Surv., Rept. C«, pp. 24-27. 1881. 

Pennsylvania. 
Chestnut Hill subdivision, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, pp. 
123-124. 1892. 
Archean. Pennsylvania. 
Chestnut Hill schists, Rand. Phil. Acad. Nat. Sci., Proc. 1900, pp. 275-276. 1900. 

Pennsylvania. 
Cheyenne sandstone, Cragin. Washburn Coll. Lab. Nat. Hist., Bull., vol. ii, pp. 
65-68. 1889. 
Kansas. Exact syn. Trinity division of Texas and Arkansas. 
Cheyenne sandstone, Cragin. Am. Geol., vol. vi, p. 233. 1890. 

Cretaceous. Kansas. Exact syn. Trinity. 
Cheyenne sandstone, Cragin. Washburn Coll. Lab. Nat. Hist., Bull., vol. ii, pp. 
69-80. 1890. 
Cretaceous. Kansas. 
Cheyenne, Cragin. Am. Geol., vol. vii, p. 179. 1891. 

Cretaceous. Texas. 
Cheyenne sandstone, Cragin. Am. Geol., vol xvi, p. 361. 1895. 
Cretaceous. Kansas. Included in Belvidere beds. Includes Elk Creek beds, 
Coral sandstone. 
Cheyenne sandstone. Hill. Am. Jour. Sci., 3d ser., vol. 1, pp. 207-234. 1895. 
Cretaceous. Kansas, Oklahoma, New Mexico. Included in Comanche series. 
Cheyenne sandstone, Prosser. Kan. Univ. Geol. Surv., vol. ii, pp. 112-114. 1897. 

Lower Cretaceous. Kansas. Included in Comanche series. 
Cheyenne sandstone, Gould. Am. Jour. Sci., 4th ser., vol. v, pp. 169, 173, 174. 
1898. 
Cretaceous. Kansas. Included in Comanche series. "'^»^'^" 
Cheyenne sandstone, Prosser. Kan. Univ. Quart., vol. viii, pp. 135-136. 1899. 
Cretaceous. Kansas. 



104 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.l9L 

Cliickamauga limestone, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Silurian. Tennessee. Exact Syn. Trenton ? 
Chickamauga, Hayes. Ala. Geol. Surv., Bull., No. 4, p. 42. 1892. 
Silurian. Alabama. Includes Nashville or Cincinnati, Trenton, and Chazy of 
Smith; Nashville, Trenton or Lebanon of Safford. 
Chickamauga series, Spencer. Ga. Geol. Surv., The Paleozoic Group, pp. 45, 82, 113 
116, 120, 124, 131, 141. 1893. 
Silurian. Georgia. Included in Hudson, Trenton, and Chazy. Includes Rock- 
smart slate, Maclurea limestone. 
Chickamauga limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios 
Nos. 12, 26. 1894, 1896. 
Silurian. Kentucky, Virginia, Tennessee. 
Chickamauga, Hayes. Geol. Soc. Am., Bull., vol. vi, p. 469. 1894. 

Silurian. Georgia, Alabama. 
Chickamauga limestone, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
2, 4, 6, 8, 19, 20, 21, 22, 35. 1894, 1895, 1896. 
Silurian. Georgia, Tennessee, Alabama. 
Chickamauga limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
16, 25, 27. 1895, 1896. 
Silurian. Tennessee, North Carolina. 
Chickamauga limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 
1896. 
Silurian. Tennessee. Part. syns. Trenton and Nashville groups. 
Chickamauga limestone, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 35. 1896. 
Silurian. Alabama. Exact syns. Trenton or Pelham limestone of Smith, Trenton, 
Lebanon, or Maclurea limestone of Safford. 
Chickamauga limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 
Silurian. Virginia, West Virginia. 
Chickamauga limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 59. 1899. 
Silurian. Virginia, Tennessee. 
Chickajsaw formation, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, pp. 344-345. 
1898. 
Tertiary. Gulf States. Included in Eocene. Part. syn. Lignitic group. 
Chickasawan stage, Vaughan. U. S. Geol. Surv., Mon., vol. xxxix, p. 25. 1900. 
Tertiary. Gulf States. Included in Eocene. Includes Nanafalia, Bluff beds, 
Greggs Landing beds, Bashi or Woods Bluff beds, Hatchetebigbee Bluff beds. 
Chico group, Whitney. Geol. Surv. of Cal., Palaeontology, vol. ii. Preface, p. xiii. 
1869. 
Cretaceous. California. 
Chico group, Diller. Science, vol. v, p. 43. 1885. 

Tertiary. California. 
Chico-Tejon, White.. U. S. Geol. Surv., Bull., No. 51, p. 28. 1889. 

Tertiary, Cretaceous. Oregon, Washington. 
Chico beds, Diller. U. S. Geol. Surv., 8th Ann. Kept., pt. i, p. 407. 1889. 

Cretaceous. California. 
Chico-Tejon series. White. U. S. Geol. Surv., Bull., No. 82, pp. 192, 264. 1891. 

Cretaceous. Pacific coast. Included in Upper Cretaceous. 
Chico beds, Diller. Geol. Soc. Am., Bull., vol. iv, p. 205. 1893. 

Cretaceous. California. 
Chico, Stanton. Geol. Soc. Am., Bull., vol. iv, p. 245. 1893. 
Cretaceous. California. 



WEEKS.] CHICKAMAUGA — CHIPOLA. 105 

Chico beds, Diller and Stanton. Geol. Soc. Am., Bull., vol. v, pp. 435, 444. 1894. 

Cretaceous. California. Includes Wallala beds. 
Chico, Emmons and Merrill. Geol. Soc. Am., Bull., vol. v, pp. 496, 500. 1894. 

Cretaceous. Mexico. 
Chico formation, Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 458. 1894. 

Cretaceous. California. 
Chico, Turner. Am. Geol., vol. xiii, p. 234. 1894. 

Cretaceous. California. 
Chico-Tejon series, Turner and Stanton. Am. Geol., vol. xiv, p. 92. 1894. 

Cretaceous. Tertiary. California. 
Chico-Tejon formation, Marcou. Am. Geol., vol. xix, pp. 121-125. 1897. 

Cretaceous. 
Chico formation, Fairbanks. Jour, of Geol., vol. vi, pp. 560-561. 1898. 

Cretaceous. California. 
Cliicopee shale, Emerson. Geol. Soc. Am., Bull., vol. ii, p. 452. 1891. 

Trias. Massachusetts. 
Chicopee shale, Emerson. Geol. Soc. Am., Bull., vol. viii, p. 62. 1897. 

Trias. Massachusetts. 
Chicopee shale, Emerson. TJ. S. Geol. Surv., Mon., vol. xxix, p. 370. 1898. 

Juratrias. Massachusetts. Included in Connecticut River sandstone. 
Chicopee shale, Emerson. U. S. Geol. Surv., Atlas of U. S., Folio No. 50. 1898. 

Juratrias. Massachusetts. 
Chikis quartzite, Frazer. 2d Pa. Geol. Surv., Rept. C, pp. 6-8, 19-20. 1880. 

Cambrian? Pennsylvania. Exact syn. Primal sandstone. See Chiques sandstone. 
ChiUiowee sandstone and shales, Safford. Geol. Reconn. of the State of Tenn., 
Ist Rept., pp. 152-153. 1856. 

Tennessee. Includes in Cambrian system (?). 
Chilhowee sandstone, Safford. Geol. of Tenn. pp. 198-203. 1869. 

Silurian. Tennessee. Included in Potsdam group. 
Chilhowee sandstones, Kerr. N. C. Geol. Surv., Rept. 1866-67, p. 29. 1869. North 

Carolina. 
Chilhowee sandstone, Killebreu and Safford. Resources of Tennessee, p. 30. 1874. 

Silurian. Tennessee. Included in Potsdam group. 
Chilhowee sandstone, Bradley. Am. Jour. Sci., 3d ser., vol. ix, p. 283. 1875. 

Cambrian. Tennessee. Exact syn. Potsdam sandstone. 
Chilhowee sandstone, Little. Handbook of Ga., Com. of Agric. 1876, p. 41. 1876. 

Silurian. Georgia. Included in Lower Primordial. 
Chilhowee sandstone series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., 1890-91. 
1891. 

Cambrian. Georgia. Exact syn. Weisner quartzite. 
Chilhowee, Walcott. U: S. Geol. Surv., Bull., No. 81, p. 251, 300. 1891. 

Cambrian. Appalachian region. Included in Lower Cambrian. Exact syn. 
Granular quartz. 
Chilhowee, Spencer'. Ga. Geol. Surv., The Paleozoic group, pp. 35, 77. 1893. 

Cambrian. Georgia. Included in Lower Cambrian. 
Chilhowee group, Keith. Wash. Phil. Soc, Bull., vol. xii, pp. 72, 75. 1895. 

Tennessee. Included in Cambrian. 
Chilhowee series, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 
1895. 

Cambrian. Tennessee. Includes Sandsuck shale, Starr conglomerate, Cochran 
conglomerate, Nichols shale, Nebo sandstone, Murray shale. 
Chipola beds, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Miocenj. Florida. Included in Miocene (Chipola epoch), Tampa group. Part, 
syn. Tampa group. 



106 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Chipola marl, Dall and Harris. U. S. Geol. Surv., Bull. 84, p. 122. 1892. 

Tertiary. Florida. Included in Miocene. 
Chipola marl, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, pp. 147, 165. 
1894. 

Tertiary. Florida. Included in Miocene. 
Chipola beds, Dall. U. S. Nat. Mus., Proc, vol. xviii, p. 23. 1895. 

Tertiary. Florida. 
Chippewa Valley quartzites, Van Hise. Int. Cong, of Geol., 5th sees., pi. xiv. 
1893. 

Algonkian. Lake Superior region. Included in Huronian. 
Chippewa quartzites, Walcott. (leol.Soc. Am., Bull., vol. x, p. 222. 1899. 

Algonkian. Wisconsin. Included in Upper Huronian. Part syns. Penokee, 
Upper Marquette, Animikie. 
Chiques sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, p. 165. 1892. 

Cambrian. Pennsylvania. Included in No. 1. See Chikis quartzite. 
Chitistone limestone, Rohn. U. S. Geol. Surv., 2l8t Ann. Rept., pt. ii, p. 426. 1900. 

Alaska. 
Chloritic formation, Dana. Am. Jour. Sci., 3d ser., vol. x, pp. 119-122. 1875. 

Connecticut. 
Choctaw limestone, Cragin. Colo. College Stud., vol. v, p. 41. 1894. 

Cretaceous. Texas. Included in Main street limestone. 
Chouteau limestone. Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 101, 
176, 194. 1855. 

Devonian. Missouri. Included in Chemung. 
Chouteau limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, p. 408. 1857. 

Missouri. Included in Chemung group. 
Chouteau limestone, Meek and Worthen. Am. Jour. Sci., 2d ser., vol. xxxii, p. 174. 
1861. 

Carboniferous? Illinois. 
Chouteau limestone, Shumard. Mo. (ieol. Sur\% Repts., 1855-1871, pp. 45, 295. 1873. 

Carboniferous. Missouri. Included in Chemung group. Lower Carboniferous. 
Chouteau limestone, Meek. Mo. Geol. Surv. Repts., 1855-1871, p. 174. 1873. 

Carboniferous. Missouri. Included in Lower Carboniferous. 
Chouteau group, Broadhead. Mo. Geol. Surv. Rept., 1878-^74, pp. 26-65. 1874. 

Carboniferous. Missouri. Included in Lower Carboniferous, Mountain limestone. 
Includes Chouteau limestone, Vernicular sandstone. Lithographic limestone. 
Exact syns. Chemung group, Kinderhook group. 
Chouteau group, Broadhead. St. Louis Acad. Sci., Trans., vol. iii, pp. 219, 220. 1878. 

Carboniferous. Missouri. Includes Chouteau limestone, Vernicular sandstone, 
and the Lithographic limestone. Exact syn. Kinderhook group. 
Chouteau, Rowley. Am. Geol., vol. iii, pp. 111-116. 1889. 

Carboniferous. Missouri. 
Chouteau, I^dd. Mo. Geol. Surv., Bull. No. 3, pp. 14, 15. 1890. 

Low^er Carboniferous. Missouri. Exact syn. Waverly. 
Chouteau group, Williams. U. S. Geol. Surv., Bull., No. 80, p. 170. 1891. 

Carboniferous. Included in Mississippian series. Includes Chouteau limestone, 
Vermicular sandstone, and Lithographic limestone. 
Chouteau, Miller. Mo. (xeol. Surv., Bull. No. 4, p. 6. 1891. 

Lower Carboniferous. Missouri. P^xact syn. Waverly, Marshall, Kinderhook. 
Chouteau limestone, Keyes. Geol. Soc. Am., Bull., vol. iii, p. 283. 1892. 

Lower Carboniferous. Missouri. Included in Kinderhook beds. 
Chouteau limestone, Keyes. Iowa Geol. Surv., vol. i, p. 56. 1893. 

Carboniferous. Iowa. Included in Kinderhook. 



WEEKS] CHIPOLA — ^CINCINNATI. 107 

Chouteau group, Broadhead. Am. Geol., vol. xii, p. 82. 1893. 

Carboniferous. Missouri. Included in Mississippian series. Includes Chouteau 
limestone, Vemicular sandstone, Lithographic limestone. 
Chouteau limestone, Keyes. Mo. Geol. Surv. , vol. iv, pp. 30, 50, 57, 76. 1894. 

Lower Carboniferous. Missouri. Included in Kinderhook stage. 
Chouteau limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, pp. 390, 395. 1894. 

Lower Carboniferous. Missouri. Included in Kinderhook stage. 
Chouteau group, Weller. Jour, of Geol., vol. iii, pp. 903-917. 1895. 

Carboniferous. Mississippi Valley. 
Chouteau limestone, Stewart. Kan. Univ. Quart., vol. iv, pp. 161-162. 1896. 

Carboniferous. Missouri. 
Chouteau limestone, Keyes. St. Louis Acad. Sci., Trans., vol. vii, p. 359. 1897. 

Carboniferous. Missouri. 
Chouteau limestone, Shepard. Mo. Geol. Surv., Rept., vol. xii, pp. 49, 92-100. 1898. 

Lower Carboniferous. Missouri. Included in Kinderhook stage. 
Chouteau limestone, Keyes. Jour, of Geol., vol. viii, p. 318. 1900. 

Carboniferous. Mississippi Valley. 
Chuax, Walcott. Geol. Soc. Am., Bull., vol. i, p. 50. 1889. 

Algonkian. Arizona. 
Chuar, Walcott. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 506. 1894. 

Algonkian. Grand Canyon of Colorado. Included in Grand Canyon series. 
Chuar terrane, Walcott. Jour, of Geol., vol. iii, pp. 319-322. 1895. 

Algonkian. Grand Canyon region. Included in Grand Canyon series. 
Chuar terrane, Walcott. G«ol. Soc. Am., Bull., vol. x, p. 215. 1899. 

Algonkian. Arizona. Included in Grand Canyon series. 
Chuar, Crosby. Geol. Soc. Am., Bull., vol. x, p. 158. 1899. 
Algonkian. Colorado. Included in Grand Canyon group. 
Churchill Arkose sandstone, Tyrrell. Can. Geol. Surv., new ser., vol. ix, p. 174F. 
1898. 
Cambrian. Hudson Bay region. 
Cixnaxron series, Cragin. Colo. College Stud., vol. vi, pp. 3, 18-48. 1896. 
Permian. Kansas. Includes Kiger division above and Salt Fork below, 10 forma- 
tions. 
Cimarron series, Prosser. Kan. Univ. Quart, vol. vi, pp. 150-151, 175. 1896. 

Permian or Triassic? Kansas. 
Cimarron series, Prosser. Kan. Univ. Gefll. Surv., vol. ii, pp. 75-95. 1897. 
Carboniferous. Kansas. Included in Permian? Includes Kiger and Salt Fork 
divisions, comprising Big Basin sandstone, Hackberry shales. Day Creek dolo- 
mite. Red Bluff sandstones, Dog Creek shales, Cave Creek gypsum, Flower-pot 
shales. Cedar Hill sandstones, Salt Plain measures and Harper sandstones. 
Upper Permian. 
Cimarron series, Grimsley. Geol. Soc. Am., Bull., vol. viii, p. 228. 1897. 

Permian. Kansas. 
Cimarron series, Cragin. Am. Geol., vol. xix, pp. 351-363. 1897. 
Permian. Indian Territory, Kansas, Oklahoma. Includes Kiger and Salt Fork 
divisions. 
Cincinnati limestone, Mather. Rept. State House Artesian Well at Columbus, Ohio. 
p. 6. 1859. 
Ohio. 
Cincinnati group. Meek and Worthen. Phil. Acad. Nat. Sci., Proc, vol. xvii, 

p. 155. 1865. 
Cincinnati group, Worthen. 111. Geol. Surv., vol. i, pp. 136-141. 1866. 
Silurian. Illinois. Included in Lower Silurian. Includes Cape Girardeau lime- 
stone, and Thebes sandstone in southern Illinois. 



108 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Cincinnati group, Wiiitney. 111. Geol. Surv., vol. i, pp. 172-177. 1866. 

Silurian. Illinois. 
Cincinnati group, Worthen. 111. Geol. Surv., vol. iii, pp. 26-27, 117. 1868. 

Silurian. Illinois. 
Cincinnati limestone, Haymond. Indiana Geol. Surv., 1st Ann. Rept., 1869, p. 192. 
1869. 

Indiana. 
Cincinnati group. Bannister. 111. Geol. Surv., vol. iv, pp. 121, 140. 1870. 

Silurian. Illinois. 
Cincinnati group, Bradley. 111. Geol. Surv., vol. iv, pp. 200, 216, 233. 1870. 

Silurian. Illinois. 
Cincinnati group, Worthen. 111. Geol. Surv., vol. iv, p. 5. 1870. 

Silurian. Illinois. 
Cincinnati group, Newl)erry. Ohio. (reel. Surv., Rept. Prog., 1869, p. 19. 1870. 

Silurian. Ohio. P]xact syn. Blue Limestone group. 
Cincinnati group, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, pp. 12, 14. 1870. 

Silurian. Ohio. Exact syn. Blue limestone. 
Cincinnati group, Newberry. Ohio Geol. Surv., Rept. Prog., p. 14. 1871. 

Silurian. Ohio. 
Cincinnati group, Shaw. 111. Geol. Surv., vol. v, pp. 35-56, 65-66, 77-78, 98-99, 
110-111, 131-132, 152-154. 1873. 

Silurian. Illinois. 
Cincinnati group, Orton. Ohio. Geol. Surv., vol. i, pt. i, pp. 367, 437. 1873. 

Silurian. Ohio. Includes Lebanon, Cincinnati, and Point Pleasant beds. Exact 
syns. Blue limestone, Hudson River. 
Cincinnati, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 103, 116. 1873. 

Silurian. Ohio. Includes Lebanon, Cincinnati, and Point Pleasant beds. 
Cincinnati group. Miller. Cin. Quart. Jour. Sci., vol. i, pp. 97-115. 1874. 

Silurian. Ohio Valley. Includefl in Ordovician. 
Cincinnati group, Borden. Indiana Geol. Surv., 5th Ann. Rept. 1873, p. 137. 1874. 

Indiana. 
Cincinnati group, Broadhead. Mo. Geol. Surv., Rept., 1873-74, p. 28. 1874. 

Silurian. Missouri. Included in Lower Silurian. Exact syns. Hudson River 
and Utica shales. 
Cincinnati, Orton. Ohio. Geol. Surv., vol. ii, p. 662. 1874. 

Silurian. Ohio. 
Cincinnati group, Bradley. Am. Jour Sci., 3d ser., vol. ix, p. 281. 1875. 

Silurian. Tennessee. 
Cincinnati group, Shaler. Ky. Geol. Surv., new ser., vol. iii, pp. 149-159. 1877. 

Silurian. Kentucky. 
Cincinnati shales and limestone, Chamberiin. Geol. of Wisconsin, vol. ii, p. 314. 
1877. 

Lower Silurian. Wisconsin. 
Cincinnati group, Newl)erry. Ohio Geol. Surv., vol. iii, p. 2. 1878. 

Silurian. Ohio. Included in Lower Silurian. 
Cincinnati group, Orton. Ohio Geol. Surv., vol. iii, pp. 382, 400, 406. 1878. 

Silurian. Ohio. Exact syn. Blue limestone. 
Cincinnati. Kansas City Rev., vol. ii. No. xi, p. 668. 1879. 

Silurian. Ohio. 
Cincinnati group. Miller. Cin. Soc. Nat. Hist, Jour., vol. iv, p. 269. 1881. 

Ordovician. 
Cincinnati group, Foerste. Denison Univ. Sci. Lab., Bull., vol. i, p. 64, etc. 1885. 

Ohio. 



WKEK8.] CINCINNATI CITICO. 109 

Cincinnati group, James. Cin. Soc. Nat. Hist., Jour., vol. ix, No. 2, p. 20. 1886. 

Ordovician. 
Cincinnati series, Orton. Ohio Geol. Surv. , Prelim. Kept. Petroleum and Inflammable 
Gas, p. 19. 1886. 

Ohio. 
Cincinnati group, James. Cin. Soc. Nat. Hist., Jour., vol. x, No. 2, pp. 71, 77. 1887. 

Ordovician. Ohio. 
Cincinnati group, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 3. 1888. 

Ohio. 
Cincinnati limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. 
.Cincinnati, James. Am. Geol., vol. v, p. 335. 1890. 

Silurian. Ohio and Mississippi Valley. Part. syn. Maquoketa. 
Cincinnati group, James. Cin. Soc. Nat. Hist., Jour., vol. xiv, No. 2, p. 93. 1891. 

Ordovician. Ohio. 
Cincinnati group, James. Cin. Soc. Nat. Hist., Jour., vol. xiv, No. i, p. 45. 1891. 

Lower Silurian. 
Cincinnati limestone and shale, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, 
pp. 332, 365. 1892. 

Silurian. Minnesota. Includes Maquoketa beds and Wykoff beds. 
Cincinnati group, Hubbard. Indiana Acad. Sci., Proc., 1885-1891, p. 68. 1892. 

Lower Silurian. Indiana. 
Cincinnati group, Hershey. Science, vol. xxii, p. 202. 1893. 

Silurian. Illinois. 
Cincinnati formation, Foerste. Cin. Soc. Nat. Hist., Jour., vol. xviii, nos. 3,4, p. 163. 
1896. 

Ordovician. Ohio. 
Cincinnati, Winchell and Ulrich. Minn. Geol. and Nat. Hist. Surv., Final Kept., 
vol. iii, pt. ii, p. ci. 1897. 

Lower Silurian. Minnesota. Exact syn. Hudson River. 
Cincinnati group, Kindle. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 
1897, p. 408. 1898. 

Ordovician. Indiana. 
Cincinnati beds, Newsom. Indiana Acad. Sci., Proc. 1897, p. 250. 1898. 

Indiana. 
Cincinnati rocks, Ashley. Indiana Dept. Geol. and Nat. Res., 23d Ann. Rept., 1898, 
p. 77. 1899. 

Lower Silurian. Indiana. 
Cincinnatian, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Silurian. New York. Includes Utica shale, Lorraine beds, Richmond beds. 
Cisco division, Cummins. Texas Geol. Surv., 2d Ann. Rept., pp. 374-375. 1891. 

Carboniferous. Texas. Included in Coal Measures. 
Cisco division, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 402-421. 1893. 

Carboniferous. Texas. Includes Santa Anna branch, No. 18, Horse Creek, Watts 
Creek, Camp Colorado, No. 13, Stockwether bed, Coon Mountain, Camp Creek, 
Saddle Creek, Waldrip, Chaffin, Parks Mountain, Lohn, Speck Mountain, 
Bellerophon, and Trickham beds. 
Citadel series, Ells. Geol. Soc. Am., Bull., vol. i, p. 465. 1889. 

Ordovician. Quebec. Included in Quebec group. 
Citadel rocks, Bailey and Mclnnes. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 
5M-6M, 13M-14M. 1893. 

Silurian. Canada. Included in Cambro-Silurian. Part. syn. Trenton-Utica. 
Citico conglomerate, Walcott. Geol. Soc. Am., Bull., vol. v, p. 196. 1894. 

Archean? Tennessee. Included in Ocoee- 



110 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Citico conglomerate, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 
1895. 

Algonkian? Tennessee. Included in Ocoee series. 
Citico conglomerate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25. 
1895, 1896. 

Tennessee, North Carolina. Included in Ocoee group. 
Claiborne deposits, Conrad. Phil. Acad. Nat. Sci., vol. vii, pp. 116-123. 1834, 

Included in Eocene. 
Claiborne sandstone, Conrad. Phil. Acad. Nat. Sci., Proc., vol. iii, pp. 280-281. 
1846. 

Mississippi. Included in Lower Eocene. 
Claiborne, Conrad. Phil. Acad. Nat. Sci., Proc., vol. vii, p. 257. 1856. 

Mississippi. Included in Eocene. 
Claiborne group, Hilgard. Rept. on Geol. and Agric. Miss., pp. 123-128. 1860. 

Eocene. Mississippi. Includes Siliceous Claiborne, Lignitic clays and sands of 
Northern Clarke County? Part. syns. Buhrstone, Claiborne, etc. 
Claiborne group, Hilgard. Am. Jour. Sci., 2d ser., vol. xliii, p. 33. 1867. 

Tertiary. Alabama, Mississippi. Exact syn. Claiborne group proper, or Calcare- 
ous Claiborne. 
Claiborne, Mell. Am. Inst. Mg. Engrs., Trans., vol. viii, p. 304. 1880. 

Tertiary. Alabama. 
Claibornian, Heilprin. Phil. Acad. Nat. Sci., Proc., 1882, p. 184. 1882. 

Included in Eocene. Exact syn. Claiborne. 
Claibornian, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 116, 120, 145-147. 
1884. 

Included in Tertiary, Eocene. 
Claiborne, Aldrich. Am. Jour. Sci., 3d ser., vol. xxx, pp. 300-303. 1885. 

Tertiary. Alabama. 
Claiborne, Meyer. Am. Jour. Sci., 3d ser., vol. xxx, pp. 421-435. 1885. ' • 

Tertiary. Gulf region. 
Claiborne, Smith. Am. Jour. Sci., 3d ser., vol. xxx, p. 272. 1885. 

Tertiary. Gulf States. 
Claiborne, Langdon. Am. Jour. Sci., 3d ser., vol. xxxi, p. 206. 1886. 

Tertiary. Mississippi. 
Claiborne group, Aldrich. Cin. Soc. Nat. Hist., Jour., vol. viii, p. 256. 1886. 

Tertiary. 
Claiborne, Aldrich. Ala. Geol. Surv., Bull., No. 1, p. 44. 1886. 

Tertiary . A labama. 
Claiborne, Smith. Ala. Geol. Surv., Bull. No. 1, p. 8. 1886. 

Tertiary. Alabama. 
Claiborne, Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, pp. 16, 18, 1887. 

Tertiary. Alabama. Included in Middle Eocene. 
Claiborne series, Langdon. Ga. Geol. Surv., 1st Rept. Prog., p. 96. 1891. 

Tertiary. Georgia. 
Claiborne division, Spencer. Ga. Geol. Surv., 1st Rept. Prog., p. 51. 1891. 

Tertiary. Georgia. Included in Eocene. 
Claiborne, Langdon. Geol. Soc. Am., Bull., vol. ii, p. 588. 1891. 

Tertiary. Alabama. Included in Middle Eocene. 
Claiborne division, Spencer. Ga. Geol. Surv., 1st Rept. Prog., 1890-91. 1891. 

Tertiary. Georgia. Included in Middle Eocene. 
Claiborne, Clark. U. S. Geol. Surv., Bull. No. 83, pp. 58, 62, 68. 1891. 

Tertiary. Alabama, Mississippi. Included in Eocene. 
Claiborne stage, Harris. Ark. Geol. Surv., 1892, vol. ii, p. 87. 1892. 

Tertiary. Arkansas. Included in Eocene series. 



WEEKS.] OITIOO CLARKSBUBG. Ill 

Claiborne, Smith. Ala. Geol. Surv., Bull., No. 2, pp. 53, 62. 1892. 

Tertiary. Alabama. 
Claiborne, Smith, Johnson, and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain 
of Alabama, pp. 122, 232, 385, 492, 494. 1894. 
Tertiary. Alabama. Included in Eocene. Includes Claiborne, Buhrstone. 
Claiborne stage. Lower, Vaughan. Am. Geol., vol. xv, p. 210. 1895. 

Tertiary. Louisiana. Included in Eocene. Includes Mansfield group, Arcadia 
clays. 
Claiborne, Lower, Vaughan. U. S. Geol. Surv., Bull. No. 142, p. 15. 1896. 

Tertiary. Louisiana. Included in Eocene. Includes Jackson in part, Arcadia, 
Upper Lignitic in part. Marine Claiborne, Lower Claiborne in part, and 
Mansfield. 
Claiborne-^Ieridian, McGee. U. S. Geol. Surv., 12th Ann. Kept, pt. i, p. 413. 1896. 

Tertiary. Coastal Plain, Gulf States. Included in Eocene. 
Claiborne, Lower, Vaughan. U. S. Geol. Surv., Bull. No. 142, p. 15. 1896. 

Tertiary. Louisiana. Included in Eocene. Includes Ostrea sellaeformis, Lisbon, 
Buhrstone, Calcareous and Siliceous Claiborne beds, Lerch's Jackson Arcadia, 
Upper Lignitic, Marine Claiborne, and Lower Lignitic, Mansfield group. 
Claiborne sands, Dall. U. S. Geol. Surv., 18th Ann. Kept., pt. ii, p. 340. 1898. 

Tertiary. Alabama. Included in Claibornian stage. Eocene. 
Claiborne stage, lower, Harris and Veatch. La. State Exp. Sta., pt. v, p. 73. 1899. 

Tertiary. Louisiana. Included in Eocene. 
Claibornian stage, Vaughan. U. S. Geol. Surv., Mon., vol. xxxix, p. 27. 1900. 

Tertiary. Gulf States. 
Claxion group, Rogers. Geol. of Pa., vol. ii, pp. 490, 501, 572. 1858. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Clarion sandstone, Stevenson. 2d Pa. Geol. Surv. , Rept. K^, p. 43. 1878. 
Carboniferous. Pennsylvania. Included in Lower Productive series. Exact syn. 
Piedmont sandstone. 
Clarion sandstone, Piatt. 2d Pa. Geol. Surv., Rept. H^, p. 323.' 1880. 

Carboniferous. Pennsylvania. 
Clarion group. Chance. Pa. Geol. Surv., Rept. V^, pp. 49-56. 1880. 

Carboniferous. Pennsylvania. Included in Lower Productive Measures. 
Clarion coal, White. U. S. Geol. Surv., Bull. No. 65, p. 175. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Lower Coal 
Measures, Allegheny River series. Includes Upper and Lower Clarion. Part, 
syn. Scrub-grass coal. 
Clarion group. White. Geol. Soc. Ain., Bull., vol. xi, pp. 148-150. 1900. 

Carboniferous. Pennsylvania. Included in Allegheny series. 
Clark, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Carboniferous. Virginia, West Virginia. Included in Pottsville series. 
Clark formation, White. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, p. 814. 1900. 

Carboniferous. Virginia, West Virginia. 
Clark County Littorals, Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 79, 80. 1888. 

Cretaceous. Arkansas. Included in Upper Arenaceous beds. 
Clarke's iWiH shale, Lesley. 2d Pa. Geol. Surv. , Final Rept. , vol. ii, pp. 969-970, 972. 
1892. 
Silurian. Pennsylvania. Included in No. vi. Includes Pentamerus limestone, 
Delthyris shale. 
Clarksbtirgr limestone. White. U. S. Geol. Surv., Bull. No. 65, p. 88. 1891. 
Carboniferous. Pennsylvania, West Virginia. Included in Barren Measures, Elk 
River series. 



112 NOBTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Clarksburg formation, Van Hise and Bay ley. U. S. Geol. Surv., 15th Ann. Rept., 
p. 604. 1895. 

Algonkian. Lake Superior Region. Included in Upper Marquette series. 
Clarksburg formation, Bay ley. U. S. Geol. Surv. , Mon., vol. xxviii, pp. 460-486. 1897. 

Algonkian. Michigan. Includeti in Upper Marquette series. 
Clay marl formation, Clark. N. J. State Geol., Rept., 1892, pp. 186-190. 1893. 

Cretaceous. New Jersey. 
Clayton, Smith, Johnson, and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain of 
Alabama, pp. 192, 198, 240, 413, 489. 1894. 

Tertiary. Alabama. Included in Eocene. Exact syn. Midway. 
Clear Creek limestone, Worthen. 111. Geol. Surv., vol. i, pp. 126-129. 1866. 

Devonian and Upper Silurian. Illinois. Part. syn. Lo>ver Helderberg limestone 
and Oriskany sandstone of New York. 
Clear Creek, Hmestone, Worthen. 111. Geol. Surv., voL iii, pp. 24-25, 37-38. 1868. 

Devonian. Illinois. Included in Oriskany group. 
Clear Creek sandstone, Broadhead. Mo. Geol. Surv., Rept. 1873-74, pp. 69, 100. 
1874. 

Carboniferous. Missouri. Included in Coal Measures. 
Clear Creek bed, Drake. Texaa Geol. Surv., 4th Ann. Rept., pp. 392-394. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Clear Creek limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 41, 42. 1894. 

Silurian. Missouri. Included in Niagara stage. 
Clear Creek, Wheeler. Mo. Geol. Surv., vol. xi, p. 41. 1896. 

Silurian. Missouri. 
Clear Creek limestone, Schuchert. Geol. Soc. Am., Bull., vol. xi, p. 317. 1900. 

Devonian. Illinois. Included in Oriskany. 
Clear Fork, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. Ixix. 1890. 

Permian. Texas. 
Clear Fork beds, Cummins. Texas Geol. Surv., Ist Ann. Rept, p. 188. 1890. 

Permian. Texas. 
Clear Fork beds, Cummins. Texas Geol. Surv., 2d Ann. Rept., pp. 401-402. 1891. 

Permian. Texas. 
Clear Fork division, Cummins. Texas Geol. Surv., 4th Ann. Rept., pp. 226-228. 
1893. 

Permian. Texas. 
Clearwater shale, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 30D-32D, 
55D-58D. 1893. 

Cretaceous. Canada. Included in Colorado group. 
Clepsydrops shale, Cope. U. S. Geol. and Geog. Surv. of Terr., Bull., vol. v, pp. 
51-52. 1879. 

Carboniferous. Illinois, Indiana. 
Clermont limestone, Ashburner. 2d Pa. Geol. Surv., Rept. R^, pp. 378-379. 1885. 

Carboniferous. Pennsylvania. 
Cleveland shale, Newberry. Ohio Geol. Surv., Rept. Prog. 1869, pp. 19, 21. 1870. 

Carboniferous. Ohio. 
Cleveland shale, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 22. 1871. 

Carboniferous. Ohio. Included in Waverly group. 
Cleveland shale, Read. Ohio Geol. Surv., vol. i, pp. 486, 514, 525. 1873. 

Carboniferous. Ohio. Included in Waverly. 
Cleveland shale, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 189, 208. 1873. 

Carboniferous. Ohio. Included in Waverly. 
Cleveland shale, Newberry. Ohio Geol. Surv., vol. ii, pp. 92-95, 188, 213. 1874. 

Carboniferous. Ohio. Included in Waverly, Lower Carboniferous. 
Cleveland shale, Winchell. Ohio Geol. Surv., vol. ii, pp. 242, 263, 282. 1874. 

Carboniferous. Ohio. Included in Waverly. 



WEEKS.] CLARKSBUEG CLINCH. 113 

Cleveland shale, Lesley. 2d Pa. Geol. Surv., Rept. I, p. 75. 1875. 

Devonian. Ohio, Pennsylvania. Exact syn. No. viii. 
Cleveland shale, Hicks. Am. Jour. Sci., 3d ser., vol. xvi, p. 70. 1878. 

Carboniferous. Ohio. Included in Waverly, 
Cleveland shale, Orton. Rev. of Strat. Geol. of eastern Ohio, p. 2. 1880. 

Devonian. Ohio. 
Cleveland shale, Orton. Ohio Geol. Surv., vol. vi, pp. 4, 26. 1888. 

Devonian. Ohio. Included in Ohio shale. 
Cleveland shale, Herrick. Denison Univ. Sci. Lab., Bull., vol. iv, p. 106. 1888. 

Ohio. 
Cleveland shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 21, 22. 1893. 

Devonian. Ohio. Included in Ohio shale. 
Cleveland County red sands, Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 58-59. 1888. 

Tertiary. Arkansas. Included in Camden series. Part. syn. Claiborne beds of 
Alabama and Mississippi. 
Click series, Durable. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. Ivii. 1890. 

Archean. Texas. Included in Femandan system. 
Cliff limestone, Locke. Ohio Geol. Surv., 2d Ann. Rept., by W. W. Mather, p. 211. 
1838. 

Silurian. Ohio. 
Cliff limestone, Owen. Rept. on Geol. of Iowa, Wis., and 111., p. 19. 1839. 

Mississippi Valley. 
Cliff limestone, Clapp. Phil. Acad. Nat. Sci., Proc, vol. i, pp. 178, 316. 1843. 

Silurian. Ohio. Includes Niagara, Marcellus. 
Cliff limestone, Daniels. Wis. Geol. Surv., Rept., 1853, p. 12. 1854. 

Silurian. Wisconsin. Includes Corraline beds. 
Cliff limestone, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 20. 1870. 

Ohio. Includes Salina and Lower Helderberg formations with two other lime- 
stones and a bed of sandstone overlying. 
Cliff limestone, Orton. Ohio Geol. Surv., Rept. Prog., 1869, pp. 141, 150. 1870. 

Ohio. Includes Clinton and Niagara groups. 
Cliff limestone, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 15. 1870. 

Silurian. Ohio. Includes Salina and Water lime. 
Cliff limestone, Orton. Geol. Surv. Ohio, Rept. Prog., 1870, p. 295. 1871. 

Silurian. Ohio. 
Cliff limestone, Newberry. Ohio Geol. Surv., p. 15. 1871. 

Silurian. Ohio. Includes Salina and Lower Helderberg limestones. 
Cliff limestone, Foerste. Denison Univ. Sci. Lab., Bull., vol. i, p. 64. 1885. 

Ohio. 

Clifton limestone, Safford and Killebrew. Elementary Geol. of Tenn., pp. 144-146. 

1876. 

Silurian. Tennessee. Included in Upper Silurian. Exact syn. Meniscus lime- 
stone. 

Clinch Mountain sandstone, Safford. Geol. Reconn. in the State of Tenn. , 1st Rept. , 

p. 157. 1856. 

Silurian(?). Tennessee. Included in Dyestone and Gray limestone group. 
Clinch Mountain sandstone, Safford. Geol. of Tenn. , pp. 292-299. 1869. 

Silurian. Tennessee. Included in Niagara group. Part. syn. Medina sandstone 
of New York. 
Clinch Mountain sandstone, Killebrew and Safford. Resources of Tenn. , p. 37. 1874. 

Silurian. Tennessee. Included in Niagara period. 
Clinch sandstone, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 176. 1894 

Silurian. Virginia. Included in Medina, Oneida. 

Bull. 191—02 8 



114 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Clinch sandstone, Campbell. U. S. Geol. Surv., G«ol. Atlas of U. S., Folios Nos. 12, 26. 
1894, 1896. 
Silurian. Kentucky, Virginia, Tennessee. 
Clinch sandstone, Keith. U. 8. Geol. Surv., Geol. Atlas of U.S., Folios Nos. 25, 27, 
1896. 
Silurian. Tennessee. 
Clinch sandstone, Campbell. U. S. Greol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Silurian. Virginia, West Virginia. 
Clinch sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 59. 
1899. 
Silurian. Virginia, Tennessee. 
Clingman conglomerate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 16. 1895. 
Tennessee, North Carolina. Included in Ocoee group. 
Clinton group, Vanuxem. Geol. of New York, pt. iii, pp. 79-90. 1842. 
Paleozoic. New York. Includes Ferriferous slate and sandrock. No. 5 Pennsyl- 
vania survey. Part. syn. Protean group. 
Clinton, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 230. 1842. 

Included in Lower Silurian. 
Clinton group, Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 58-79. 
1843. 
Paleozoic. New York. Includes Pentamerus limestone of Clinton group. Exact 
syn. Protean, Ferriferous slate and sand rock. 
Clinton group, Emmons. Agric. of New York, vol. i, pp. 144-150. 1846. 

New York. Included in Ontario division of New York system. 
Clinton group, Emmons. Agric. of New York, vol. i, pp. 144-150. 1846. 
Silurian. New York. Included in Ontario division of New York system. Exact 
syns. Protean group, Ferriferous slate and sand rock. 
Clinton group, Hall. Foster and Whitney's Kept, on Geol. of Lake Superior Dist, 
pt. ii, p. 152. 1851. 
Silurian. Lake Superior region. 
Clinton group. Hall. Paleontology of New York, vol. ii, pp. 2-4, 15-17. 1852. 

Silurian. New York. 
Clinton group, Hall. Am. Jour. Sci., 2d ser., vol. xvii, p. 192. 1854. 

Silurian. Michigan. 
'Clinton formation, Logan. Can. Geol. Surv., Kept., 1843-63, pp. 310-321. 1863. 

Silurian. Canada (Western). Included in Anticoste group. 
Clinton formation, Bell. Can. Geol. Sur\\, Kept. 1866-69, pp. 127-128. 1871. 

Silurian. Canada. 
jClinton, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 62, 103, 126. 1873. 

Silurian. Ohio. 
Clinton, Orton. Ohio Geol. Surv., vol. i, pt. i, p. 463. 1873. 

Silurian. Ohio. 
Clinton, Orton. Ohio Geol. Surv., vol. ii, p. 663. 1874. 

Silurian. Ohio. 
Clinton, Lesley. Am. Phil. Soc, Proc, vol. xiv, p. 103. 1874. 

Silurian. Pennsylvania. 
Clinton, Ash burner. Am. Phil. Soc, Proc, vol. xvi, pp. 531, 556. 1877. 

Silurian. Appalachian region. Includes Olive shale. Exact syn. Surgent. 
Clinton iron ore, Chamberlin. Geol. of Wisconsin, vol. ii, pp. 327-334. 1877. 

Upper Silurian. Wisconsin. 
Clinton, Ashburner. 2d Pa. Geol. Surv., Kept. F, pp. 248-260. 1878. 
Silurian. Pennsylvania. Exact syn. Surgent. 



WEEKS] CLINCH CLINTON. 115 

Clinton, Orton. Ohio Geol. Surv., vol. iii, pp. 384, 407. 1878. 

Silurian. Ohio. 
Clinton, Newberry. Ohio Geol. Surv., vol. iii, p. 5. 1878. 

Silurian. Ohio. Included in Upper Silurian. 
Clinton, Hussey. Ohio Geol. Surv., vol. iii, pp. 441, 479. 1878. 

Silurian. Ohio. 
Clinton, Stevenson. Am. Phil. Soc., Proc., vol. xix, pp. 99, 228. 1880, 1881. 

Silurian. Virginia. 
Clinton, Piatt. 2d Pa. Geol. Surv., Kept. T, pp. 42-44, 137-152. 1881. 

Silurian. Pennsylvania. Exact syn. Surgent. 
Clinton group, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 268, 289. 1881. 

Silurian. 
Clinton, White. 2d Pa. Geol. Surv., Rept. G«, pp. 147-149. 1882. 

Silurian. Pennsylvania. Exact syn. No. v. 
Clinton, Stevenson. 2d Pa. Geol. Surv., Rept. T, pp. 90-91. 1882. 

Silurian. Pennsylvania. 
CUnton, White. 2d Pa. Geol. Surv., Rept. G^ pp. 110-114. 1883. 

Silurian. Pennsylvania. Exact syn. No. v. 
Clinton formation, Chamberlin. Geol. of Wisconsin, vol. i, pp. 179-181. 1883. 

Upper Silurian. Wisconsin. Included in Niagara period. 
Clinton group, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Montgom- 
ery counties, 1884. 

Silurian. Kentucky. Included in Upper Silurian. Part. syn. Crab Orchard shale. 
Clinton, Schmitz. Am. Inst. Mg. Engrs., Trans., vol. xii, p. 144. 1884. 

Silurian. Alabama. 
Clinton, Claypole. Am. Phil. Soc, Proc, vol. xxi, p. 492. 1884. 

Silurian. Pennsylvania. 
Clinton, Claypole. 2d Pa. Geol. Surv., Rept. F, pp. 44-51. 1885. 

Silurian. Pennsylvania, 
ainton. White. 2d Pa. Geol. Surv., Rept. T^, pp. 131-132. 1885. 

Silurian. Pennsylvania. 
Clinton, Stevenson. Am. Phil. Soc, Proc, vol. xxi, p. 137. 1885. 

Silurian. Virgiaia. 
Clinton, Linney. Ky. Geol. Surv., Geol. of Bath Co., p. 17. 1886. 

Silurian. Kentucky. 
Clinton group. Miller. North American Geol. and Pal., p. 49. 1889. 
Clinton group, Orton. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 559. 1889. 

Silurian. Ohio, Indiana. 
Clinton, Smith. Ala. Geol. Surv., Rept on Cahaba coal field, p. 153. 1890. 

Silurian. Alabama. Exact syn. Red Mountain. 
Clinton limestone, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 
17-18, 225-247. 1890. 

Silurian. Ohio. 
Clinton, Prosser. Roch. Acad. Sci.,Proc., vol. ii, pp. 50-124. 1892. 

Silurian. New York. 
Clinton, Gibson. Ala. Geol. Surv., Geol. Structure of Murphree's Valley, pp. 25, 39. 
1893. 

Silurian. Alabama. Exact syn. Red Mountain. 
Clinton, Brumell. Geol. Soc Am. , Bull. , vol. iv, pp. 227, 232. 1893. 

Silurian. Ontario. 
Clinton, Prosser. Geol. Soc. Am. Bull., vol. iv, pp. 108, 116. 1893. 

Silurian. New York. 
Clinton, Williams and Clark. Maryland. Its Resources, Industries, and Institu- 
tions, p. 70. 1893. 

Silurian. Maryland. Exact syn. Niagara. Part. syn. No. v. 



116 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Clinton, Spencer. Ga. Geol. Surv., The Paleozoic group. 1893. 

Silurian, (xeorgia. Included in Red Mountain. 
Clinton, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 218-220. 1894. 

Silurian. New York. 
Clinton conglomerate, Foerste. Jour, of Geol., vol. iii, pp. 50-61, 169-197. 1895. 

Silurian. Kentucky, Ohio. 
Clinton shales, Luther. N. Y. State Geol., 15th Ann. Rept. p. 247. 1897. 

Silurian. New York. 
Clinton, Barlow. Can. Geol. Surv., new ser., vol. x, p. 123 I. 1898. 

Silurian. Ontario and Quebec. 
Clinton group, Luther. N. Y. State Geol., 16th Ann. Rept., p. 203. 1899. 

Silurian. New York. 
Clinton, White. N. Y. State Mus., 51st Ann. Rept., voL i, p. r37. 1899. 

Silurian. New York. 
Clinton, Foerste. Indiana Dept. Geol. and Nat. Res., 24th Ann. Rept., pp. 68-77. 
1900. 

Silurian. Indiana, Kentucky, Ohio. Included in Middle Silurian. 
Clinton formation, O'Harra. Md. Geol. Surv., Allegany County, p. 89. 1900. 

Silurian. Maryland. 
Clipper Gap formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 66. 1900. 

Carboniferous. California. Included in Calaveras formation. 
Clover Canyon quartzite, King. U. S. Expl. of 40th Parallel, vol. i, p. 69. 1878. 

Archean. Nevada. 
Coal Bluflf lignite, Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 51. 1887. 

Tertiary. Alabama. Included in Lignitic, Nanafalia series. Lower Eocene. 
Coaledo formation, Diller. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, pp. 319- 
320. 1899. 

Tertiary. Oregon. Included in Eocene. 
Coal Measures, Rogers. Pa. State Geol., 1st Ann. Rept., pp. 16-20. 1836. 

Carboniferous. Pennsylvania. 
Coal Measures, Foster. Ohio Geol. Surv., 2d Ann. Rept., by W. W. Mather, p. 83. 
1838. 

Carboniferous. Ohio. 
Coal Measures, Briggs. Ohio Geol. Surv., 2d Ann. Rept., by W. W. Mather, p. 132. 
1838. 

Carboniferous. Ohio. 
Coal series, Lower, Mather. Am. Jour. Sci., 1st ser., vol. xxxiv, p. 357. 1838. 

Ohio. 
Coal Measures, Tuomey. Ala. Geol. Surv., 1st Biennial Rept., p. 72. 1850. 

Carboniferous. Alabama. 
Coal Measures, Hitchcock. Am. Jour. Sci., 2d ser., vol. xvi, pp. 327-337. 1853. 

Carboniferous. Rhode Island. 
Coal Measures, Shumard. Mo. Geol. Surv'., Ist and" 2d Ann. Repts., pt.'ii, p. 176. 
1855. 

Silurian. Missouri. 
Coal Measures, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 78, 173, 187. 
1855. 

Carboniferous. Missouri. Included in Upper Carboniferous. Includes Upper, 
Middle, and Lower Coal series. 
Coal Measures, Owen. Ky. Geol. Surv., vol. i, pp. 29-78. 1856. 

Carboniferous. Kentucky. Includes Lower Coal Measures and Upper Coal 
Measures. 



WEEKS] CLINTON — COAL MEASURES. 117 

Coal Measures, Safford. Geol. Reconn. of the State of Tenn., 1st Kept., p. 161. 1856. 

Carboniferous. Tennessee. 
Coal Measures, Emmons. Geol. Rept. of Midland coimties of N. C, pp. 227, et seq. 
1856. 

Carboniferous. North Carolina. 
Coal Measures, Upper, Rogers. Geol. of Pa., vol. ii, p. 19, etseq. 1858. 

Carboniferous. Pennsylvania. 
Coal Measures, Hall. Iowa Geol. Surv., vol. i, p. 120. 1858. 

Carboniferous. Iowa. 
Coal Measures, Worthen. Iowa Geol. Surv., Rept., vol. i, pt. i, pp. 120-141, 188-190, 
200-201, 211-214, 222-226, 233-236, 241-242, 250, 254. 1858. 

Carboniferous. Iowa. 
Coal formation. No. 19, Tyson. Md. State Agric. Chem. Rept., 1860, p. 40. 1860. 

Carboniferous. Maryland. Exact syn. Serai series of Pennsylvania. 
Coal Measures, False, Lesley. Am. Jour. Sci.,2d ser., vol. xxxii, p. 282. 1861. 

Carboniferous. Pennsylvania. 
Coal Measures, Lesquereux. Ky. Geol. Surv., 4th Rept. of Owen, pp. 337-437. 1861. 

Carboniferous. Kentucky. 
Coal Measures, Lesley. Am. Phil. Soc. Proc, vol. ix, p. 30. 1862. 

Carboniferous. Southern Appalachian region. 
Coal Measures, Lesley. Am. Jour. Sci., 2d ser., vol. xxxvi, pp. 179-189. 1863. 

Carboniferous. Canada. 
Coal Measures, Dawson. Am. Phil. Soc, Proc, vol. ix, pp. 165, 208. 1863. 

Carboniferous. Canada. 
Coal Measures, Lesley. Am. Phil. Soc, Proc, vol. ix, p. 165. 1863. 

Carboniferous. Canada. 
Coal Measures, Lesquereux. 111. Geol. Surv., vol. i, pp. 212-237. 1866. 

Carboniferous. Illinois. 
Coal Measures, Worthen. 111. Geol. Surv., vol. i, pp. 48-76, 281-284, 300-305, 316- 
320, 330-333. 1866. 

Carboniferous. Illinois. 
Coal Measures, White. Am. Jour. Sci., 2d ser., vol. xliv, pp. 23-31. 1868. 

Carboniferous. Iowa. 
Coal Measures, White. Am. Jour. Sci., 2d ser., xlv, pp. 331-334. 1868. 

Carboniferous. Iowa. 
Coal Measures, Hayden. Am. Jour. Sci., 2d ser., vol. xlv, pp. 326-330. 1868. 

Carboniferous. Nebraska. 
Coal Measures, Freeman. 111. Geol. Surv., vol. iii, pp. 264-275. 1868. 

Carboniferous. Illinois. 
Coal Measures, Engelmann. 111. Geol. Surv., vol. iii, pp. 148-168,174-186, 193-215, 
220-235. 1868. 

Carboniferous. Illinois. 
Coal Measures, Middle, St. John. Iowa Geol. Surv., 2d Ann. Rept., 1867, pp. 175- 
190. 1868. 

Carboniferous. Iowa. 
Coal Measures, Worthen. 111. Geol. Surv., vol. iii, pp. 69-75, 87-97, 107-111 124- 
127, 136-138. 1868. 

Carboniferous. Illinois. 
Coal Measures, Safford. Geol. of Tenn., pp. 336-409. 1869. 

Carboniferous. Tennessee. Includes Upper Measures, Main conglomerate, Lower 
Measures. 
Coal Measures, Bannister. 111. Geol. Surv., vol. iv, pp. 151, 165, 179. 1870. 

Carboniferous. Illinois. 



118 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Coal Measures, Bradley. 111. Geol. Surv., vol. iv, pp. 194, 209, 231, 244, 267. 1870. 

Carboniferous. Illinois. 
Coal Measures, Green. 111. Geol. Surv., vol. iv, pp. 289, 302, 314, 326, 337. 1870. 

Carboniferous. Illinois. 
Coal Measures, Worthen. 111. Geol. Surv., vol. iv, pp. 15, 32, 48, 66, 77, 93. 1870. 

Carboniferous. Illinois. 
Coal Measures, St. John. Iowa Geol. Surv., vol. ii, pp. 12-138. 1870. 

Carboniferous. Iowa. 
Coal Measures, White. Iowa Geol. Surv., vol. ii, pp. 254-274. 1870. 

Carboniferous. Iowa. 
Coal Measures, group. White. low^a Geol. Surv., vol. i, pp. 231-250, 284. 1870. 

Carboniferous. Iowa. Includes Upper, Middle, and Lower divisions. 
Coal Measures, Middle, St. John. Iowa Geol. Surv., vol. i, pp. 264-284. 1870. 

Carboniferous. Iowa. 
Coal Measures, Stevenson. (leol. of Monongalia Co., West Va., pp. 47-63; W. Va, 
Univ., 3d Ann. Rept. of Board of Regents, pp. 47-63. 1871. 

Carboniferous. West Virginia. Includes Upper and Lower Coal Measures. 
Coal Measures, Cox. Am. Assoc. Adv. Sci., Proc., vol. xx, p. 236. 1871. 

Carboniferous. Indiana. 
Coal Measures, Lesley. Am. Phil. Soc, Proc, vol. xii, p. 489. 1871. 

Carboniferous. Virginia. 
Coal Measures, Lesley. Am. Phil. Soc, Proc, vol. xii, p. 125. 1871. 

Carboniferous. Pennsylvania. 
Coal Measures, Shaw. 111. Geol. Surv., vol. v, pp, 172-181, 188-198, 204-208. 1873. 

Carboniferous. Illinois. 
Coal Measures, Andrews. Ohio Geol. Surv., vol. i, pt. i, pp. 226, 248, 263, 295, 318. 
1873. 

Carboniferous. Ohio. 
Coal Measures, Read. Ohio Geol. Surv., vol. i, pp. 495, 521. 1873. 

Carboniferous. Ohio. 
Coal Measures, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 74, 214. 1873. 

Carboniferous. Ohio. 
Coal Measures, Shumard. Mo. Geol. Surv., Repts., 1855-1871, p. 316. 1873. 

Carboniferous. Missouri. 
Coal Measures, Broadhead. Mo. Geol. Surv., Repts. 1855-1871, pp. 42, 70, 77, 95. 
1873. 

Carboniferous. Missouri. 
Coal Measures, Meek. Mo. Geol. Surv., Repts., 1855-1873, p. 163. 1873. 

Carboniferous. Missouri. 
Coal Measures, Worthen. 111. Geol. Surv., vol. v, pp. 219-221, 228-233, 238-247, 
255-260, 270-274, 287-301, 309-316. 1873. 

Carboniferous. Illinois. 
Coal Measures, Upper, Stevenson. Lyceum of Nat. Hist, of New York, Annals, 
vol. X, pp. 226-252. 1874. 

Carboniferous. Northern Appalachian region. 
Coal Measures, Killebrew and Safford. Resources of Tenn., pp. 41-42. 1874. 

Carboniferous. Tennessee. Included in Coal Measures period. 
Coal Measures, Andrews. Ohio Geol. Surv., vol. ii, pp. 458, 510, 530, 544, 571. 
1874. 

Carboniferous. Ohio. 
Coal Measures, Broadhead. Mo. Geol. Surv., Rept. 1873-74, pp. 23, 69, 100, 122, 
157, 182, 186, 229, 250, 261, 304, 314, 323. 1874. 

Carboniferous. Missouri. Includes Upper, Middle, and Lower Coal Measures. 



WEEKS.] COAL MEASURES. Il9 

Coal Measures, Norwood. Mo. Geol. Surv., Rept, 1873-74, pp. 92, 140, 200, 276, 
295. 1874. 

Carboniferous. Missouri. 
Coal Measures, Freeman. 111. Geol. Surv. vol. vi, pp. 238-244. 1875. 

Carboniferous. Illinois. 
Coal Measures, Cox. 111. Geol. Surv., vol. vi, pp. 202-212, 223-232. 1875. 

Carboniferous. Illinois. 
Coal Measures, Broadhead. 111. Geol. Surv., vol. vi, pp. 130-196. 1875. 

Carboniferous. Illinois. 
Coal Measures, Worthen. 111. Greol. Surv., vol. vi, pp. 1-127. 1875. 

Carboniferous. Illinois. 
Coal Measures, Piatt. 2d Pa. Geol. Surv., Rept. H, pp. 3-9. 1875. 

Carboniferous. Pennsylvania. 
Coal Measures, Andrews. Am. Assoc. Adv. Sci., Proc., vol. xxiv, p. 84. 1875. 

Carboniferous. Appalachian region. 
Coal group. Lower, Stevenson. Am. Phil. Soc., Proc., vol. xiv, p. 384. 1875. 

Carboniferous. West Virginia. Included in Coal Measures. 
Coal group, Upper, Stevenson. Am. Phil. Soc., Proc., vol. xiv, p. 375. 1875. 

Carboniferous. West Virginia. Included in Coal Measures. 
Coal Measures, White. Lyceum of Nat. Hist, of New York, Annals, vol. xi, pp. 14-18. 
1876. 

Carboniferous. Pennsylvania. 
Coal Measures, Smith. Ala. Geol. Surv., Rept. 1875, p. 120. 1876. 

Carboniferous. Alabama. 
Coal Measures, Emmons. U. S. Geol. Expl. of 40th Parallel, vol. ii, pp. 198, 343. 1877. 

Carboniferous. Utah. 
Coal Measures, Hague. U. S. Geol. Expl. of 40th Parallel, vol. ii, pp. 29-33. 1877. 
Coal-bearing group, Endlich. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., 
p. 195. 1877. 

Tertiary. Colorado. 
Coal Measures, Upper, Broadhead. Kansas City Rev., vol. ii, no. iv, pp. 206-210. 
1878. 

Carboniferous. Missouri. 
Coal Measures, Middle, Broadhead. Kansas City Rev., vol. ii, no. iv, pp. 206-208. 
1878. 

Carboniferous. Missouri. 
Coal group, Upper, Stevenson. Ohio Geol. Surv. , vol. iii, p. 209. 1878. 

Carboniferous. Ohio. Included in Coal Measures. 
Coal Measures, Stevenson. Ohio Geol. Surv., vol. iii, pp. 187, 221, 238, 262. 1878. 

Carboniferous. Ohio. 
Coal Measures, Read. Ohio Geol. Surv., vol. iii, pp. 353, 523, 531, 548, 649, 822, 1878. 

Carboniferous. Ohio. 
Coal Measures, Hodge. Ohio Geol. Surv., vol. iii, p. 564. 1878. 

Carboniferous. Ohio. 
Coal Measures, Newberry. Ohio Geol. Surv., vol. iii, pp. 54, 104, 137, 155, 719, 784. 
1878. 

Carboniferous. Ohio. Includes Upper Barren Measures, Upper Coal group, 
Lower Barren Measures, Lower Coal group. 
Coal group, Upper, Newberry. Ohio Geol. Surv., vol. iii, p. 720. 1878. 

Carboniferous. Ohio. Included in Coal Measures. 
Coal group. Lower, Newberry. Ohio Geol. Surv., vol. iii, p. 724. 1878. 

Devonian. Ohio. Included in Coal Measures. 
Coal Measures, Upper, King. U. S. Exploration of 40th Parallel, vol. i, pp. 127-248. 
1878. 

Carboniferous. Utah, Nevada. 



120 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Coal Measures, Smith. Ala. Geol. Surv., Kept., 1877 and 1878, pp. 18, 21, 24, 37, 64, 
84,100,106,121. 1879. 

Carboniferous. Alabama. 
Coal Measures, Stevenson. Am. Phil. Soc, Proc, vol. xix, pp. 90, 237. 1880, 1881. 

Carboniferous. Virginia. 
Coal group, Lower, Stevenson. The Virginias, vol. ii, p. 98. 1881. 

Carboniferous. West Virginia. 
Coal group, Upper, Stevenson. The Virginias, vol. ii, p. 71. 1881. 

Carboniferous. West Virginia. Included in Coal Measures. 
Coal Measures, Stevenson. The V^irginias, voL ii, p. 25. 1881. 

Carboniferous. Virginia. 
Coal Measures, Piatt. 2d Pa. Geol. Surv. Kept. T, pp. 93-126. 1881. 

Carboniferous. Pennsylvania. Includes Freeport and Kittanning. 
Coal-bearing group, Upper, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., 
vol. iii, SuppL, p. 137. 1881. 

Cretaceous. Colorado, New Mexico. Included in Laramie. Exact syns. Lar- 
amie, King, Fort Union, Hayden. 
Coal-bearing group. Lower, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., 
vol. iii, SuppL, p. 134. 1881. 

Cretaceous. Colorado, New Mexico. Included in Laramie. 
Coal Measures, McCalley. Ala. Geol. Surv., Rept., 1879-1880, pp. 77, 129, 136, 144, 
151. 1881. 

Carboniferous. Alabama. 
Coal Measures, Smith. Ala. Geol. Surv., Rept. 1879-1880, p. 19. 1881. 

Carboniferous. Alabama. 
Coal Measures, Stevenson. Am. Phil. Soc, Proc, vol. xix, p. 276. 1881. 

Carboniferous. West Virginia. 
Coal Measures, White. 2d Pa. Geol. Surv., Rept. G^ pp. 87-88. 1882. 

Carboniferous. Pennsylvania. Exact syn. No. xiii. 
Coal Measures, Stevenson. 2d Pa. Geol. Surv., Rept. T*-^, pp. 59-65. 1882. 

Carboniferous. Pennsylvania. 
Coal Measures limestone, Lower, Hague. U. S. GeoL Surv., 3d Ann. Rept., p. 268. 
1883. 

Carboniferous. Nevada. 
Coal Measures limestone, Upper, Hague. U. S. Geol. Surv., 3d Ann. Rept., p. 270. 
1883. 

Carboniferous. Nevada. 
Coal Measures, D'Invilliers. 2d Pa. Geol. Surv., Rept. T*, pp. 51 et seq. 1884. 

Carboniferous. Pennsylvania. 
Coal Measures, Schmitz. Am. Inst. Mg. Engrs., Trans., vol, xii, p. 144. 1884. 

Carboniferous. Alabama. 
Coal Measures, White. The Virginias, vol. vi, pp. 7-16. 1885. 

Carboniferous. West Virginia. 
Coal Measures, White. 2d Pa. Geol. Surv., Rept. T^ pp. 45^8. 1885. 

Carboniferous. Pennsylvania.- 
Coal Measures, Stevenson. Am. Phil. Soc, Proc, vol. xxii, pp. 133, 147. 1885. 

Carboniferous. Virginia. 
Coal Measures, McCalley. Ala. Geol. Surv., Rept. on Warrior Coal field. 1886. 

Carboniferous. Alabama. 
Coal Measures, Col ton. Am. Inst. Mg. Engrs., Trans., vol. xiv, p. 292. 1886. 

Carboniferous. Tennessee. 
Coal Measures, Winslow. 2d Pa. Geol. Surv., Ann. Rept., 1886, pt. iv. p. 1337. 1887. 

Carboniferous. Pennsylvania. Exact syn. No. xiii. 



WEEKS.] COAL MEASUBE8. 121 

Coal-bearing shale, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 93-102. 1888. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Coal Measures, Keyes. Am. Geol., vol. ii, pp. 39&-404. 1888. 

Carboniferous. Iowa. 
Coal Measures, Penrose. Ark. Greol. Surv., 1890, vol. i, p. 498. 1890. 

Carboniferous. Arkansas. Includes Upper and Lower Coal Measures. 
Coal Measures, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 56. 1890. 

Carboniferous. Arkansas. 
Coal formation, Upper, Penrose. Ark. Geol. Surv., 1890, vol. i, p. 498. 1890 

Carboniferous. Arkansas. 
Coal Measures, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii. 1890. 

Carboniferous. Texas. Includes Coleman-Albany, Waldrip-Cisco, Brown wood 
Canyon, Milburn-Strawn, Richland-Gordon divisions. 
Coal Measures, Worthen. 111. Geol. Surv., vol. i, pp. 48-76. 1890. 

Carboniferous. Illinois. 
Coal Measures, Lower, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., 
p. 44. 1890. 

Carboniferous. Ohio. Exact syns. Hecla sandstone. Ferriferous limestone, Kit- 
tanning sandstone. Lower and Upper Freeport sandstone. 
Coal Measures, Chance. Am. Inst. Mg. Engrs., Trans., vol. xviii, p. 653. 1890. 

Carboniferous. Indian Territory. 
Coal Measures, McCalley. Ala. Geol. Surv., Rept. on Coal Measures of Plateau , 
region. 1891. 

Carboniferous. Alabama. Includes Lower conglomerate or Millstone grit, or 
Cliff rock, and Upper conglomerate. 
Coal Measures, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 308. 1891. 

Carboniferous. Iowa. 
Coal Measures, Williams. U. S. Geol. Surv., Bull. No. 80, p. 83., 1891. 

Carboniferous. 
Coal Measures, Lower, Brown. Am. Geol., vol. ix, p. 224. 1892. 

Carboniferous. West Virginia. 
Coal Measures, Lower, Gordon. Am. Geol., vol. ix, p. 185. 1882. 

Carboniferous. Iowa. 
Coal Measures, Upper, Williams and Clark. Maryland. Its Resources, Industries 
and Institutions, p. 73. 1893. 

Carboniferous. Maryland. Part. syn. No. xv. 
Coal Measures, Lower, Spencer. Ga. Geol. Surv., The Paleozoic Group. 1893. 

Carboniferous. Georgia. Included in Coal Measures. 
Coal Measures, Spencer. Ga. Geol. Surv., The Paleozoic Group, pp. 52, 96, 127, 136, 
143, 247. 1893. 

Carboniferous. Georgia. 
Coal Measures, Gibson. Ala. Geol. Surv., Geol. Structure of Murphree's Valley, p. 17. 
1893. 

Carboniferous. Alabama. 
Coal Measures, Broadhead. Am. Geol., vol. xii, p. 86. 1893. 

Carboniferous. Missouri. Includes Upper and Lower Coal Measures. 
Coal Measures, Keyes. Am. Geol., vol. xii, p. 99. 1893. 

Corboniferous. Iowa. 
Coal Measures, Hodge. Am. Inst. Mg, Engrs., Trans., vol. xxi, p. 922. 1893. 

Carboniferous. Virginia. 
Coal Measures, Weeks. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, pp. 573-588. 
1894. 

Carboniferous. West Virginia. 



122 NOBTH AMEBIC AN GEOLOGIC FORMATION NAMES. [bull. 191. 

Coal Measures, Lyman. Am. Phil. Soc., Proc., vol. xxxiii, p. 282. 1894. 

Carboniferous. West Virginia. 
Coal Measures, Til ton. Iowa Geol. Surv., vol. iii, pp. 137-146. 1896. 

Carboniferous. Iowa. 
Coal Measures, Lower, Keyes. Iowa Geol. Surv., vol. iii, pp. 265-266, 352-353, 448- 

450. 1895. Carboniferous. Iowa. Exact syn. Des Moines formation. 
Coal Measures, Smith. 2d Pa. (Jeol. Surv., Final Rept., vol. iii, pt. i, pp. 1923-1924, 
1951, 1960, 1968, 1976, 1986, 2002, 2024, 2051. 1895. 
Carboniferous. Pennsylvania. 
Coal Measures, Gibson. Ala. Geol. Surv., Rept. on Coosa Coal field. 1895. 

Carboniferous. Alabama. 
Coal Measures, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 179-185. 1896. 

Carboniferous. Kansas. 
Coal Measures, Smith. Am. Phil. Soc, Proc., vol. xxxv, p. 213. 1896. 

Carboniferous. Arkansas. 
Coal Measures, McCalley. Ala. Geol. Surv., Rept. on Valley regions, pt. ii, pp. 53- 
57,185-188, 250-251, 306, 308, 451^52,478-481, 505-606, 531-534, 748-749,812- 
814. 1897. 
Carboniferous. Alabama. 
Coal Measures, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 
Carboniferous. Maryland. Includes Elkgarden, Fairfax, Bayard, Savage, and 
Pottsville. 
Coal Measures, Drake. Am. Phil. Soc., Proc., vol. xxxvi, p. 360. 1897. 

Carboniferous. Indian Territory, Includes Upper and Lower Coal Measures. 
Coal Measures, Keyes. Jour, of Geol., vol. viii, pp. 356-365. 1898. 

Carboniferous. Arkansas. Exact syn. Des Moines series. 
Coal Measures, White. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, pp. 462-471. 
1899. 
Carboniferous. Indian Territory. Includes Upper and Lower Coal Measures. 
Coal Measures, Girty. U.S. Geol. Surv., 19th Ann. Rept., pt. iii, pp. 541-546. 1899. 

Carboniferous. Indian Territory. Includes Upper and Lower Coal Measures. 
Coal Measures, Beede. Kan. Acad. Sci., Trans., vol. xvi, pp. 70-84. 1899. 

Carboniferous. Kansas and Nebraska. 
Coal Measures, Fletcher. Can. Geol. Surv., Descriptive note on Sydney Coal field, 
pp. 8-12. 1900. 
Carboniferous. Nova Scotia. 
Coast group, Bailey and Matthew. Can. Geol. Surv., Rept., 1870-71, pp. 87-122. 
1873. 
Archean. New Brunswick. Included in Huronian. 
Coast clays, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, pp. xxxii-xxxiii. 
1890. 
Pleistocene. Texas. 
Coast clays, Dumble. Jour, of Geol., vol. ii, pp. 564-566. 1894. 
Tertiary. Texas. Included in Champlain period of Dana. Exact syn. Port 
Hudson group. 
Coastal group, Matthew. Can. Geol. Surv., Rept. Prog., 1876-77, p. 334. 1878. 

Archean. New Brunswick. Included in Laurentian (?). 
Costal series. Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, pp. 82-99. 
1899. 
Pleistocene. Jamaica. Included Falmouth, Barbican, Hopewell, and Manchionel 
and Bowden formations. 
Coasters Harbor Island arkose, Shaler, Wood worth, and Foerste. U. S. Geol. 
Surv., Mon., vol. xxxiii, p. 380. 1899. 
Carboniferous. Rhode Island. 



WEEKS] COAL MEASUBES — COLDBBOOK. 123 

Coatzacoalcos formation, Spencer. Geol. Soc. Am., Bull., vol. ix, pp. 13, 23. 1897. 

Tertiary. Mexico. Included in Miocene. 
Cobeqtiid series, Dawson. Can. Nat., 2d ser., vol. ix, p. 332. 1880. 

Silurian. Nova Scotia. Included in Upper Silurian. Includes Upper and Lower 
Cobequid. 
Cobra, Hill. Harvard Coll. Mus. of Comp. ZooL, Bull., vol. xxxiv, p. 78. 1899. 

Tertiary. Jamaica. Included in Oceanic series. 
Gobscook series, Shaler. Am. Jour. Sci., 3d ser., vol. xxxii, pp. 35-60. 1886. 

Devonian and Silurian. Maine. 
Gobscook Bay series, Williams. U. S. Geol. Surv., Bull. No. 165, p. 34. 1900. 

Silurian. Maine. 
Gochran conglomerate, Hayes. U. S. Geol. Surv., Greol. Atlas of U. S., Folio No. 20. 
1895. . 

Cambrian. Tennessee. Included in Chilhowee series. 
Cochran conglomerate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
16, 25. 1895, 1896. 

Cambrian. Tennessee, North Carolina. 
Gockeysville marble, Williams. U. S. Geol. Surv., Baltimore, Md. Greologic sheet. 
1892. 

Maryland. 
Cocksfield Ferry beds, Vaughan. Am. Geol., vol. xv, p. 220. 1895. 

Tertiary. Louisiana. Included in Eocene. 
Cocksfield Ferry beds, Vaughan. U. S. Geol. Surv., Bull. No. 142, p. 21. 1896. 

Tertiary. Louisiana. Included in Eocene. Exact syn. Claiborne sands of 
Alabama. 
Codorus limestone, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. i, p. 454. 1892. 

Silurian. Pennsylvania. Included in Lower Silurian, No. ii (?). 
Coeymans limestone, Clarke and Schuchert. Science, new ser., vol. x, pp. 876- 
877. 1899. 

Devonian. New York. Included in Helderbergian. 
Coeymans limestone, Weller. N. J. Geol. Surv., Kept. 1899, p. 28. 1900. 

Devonian. New Jersey. 
Coffee sand, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 362-364. 1864. 

Cretaceous. Tennessee. Exact syn. Tombigbee sand. 
Coffee sand, Safford. Geol. of Tennessee, pp. 411^14. 1869. 

Cretaceous. Tennessee. Exact syn. Tombigbee sand. 
Coffee sand, Killebrew and Safford. Resources of Tenn., pp. 42-43. 1874. 

Cretaceous, Tennessee. 
Coggr&n beds, Norton. Iowa Acad. Sci., Proc., vol. i, pt. iv, p. 23. 1894. 

Silurian. Iowa. Included in (?) Silurian (uppermost). 
Coggan beds, Norton. Iowa Geol. Surv., vol. iv, pp. 138-154. 1895. 

Silurian. Iowa. Included in Upper Silurian. 
Cobulta conglomerate, Hayes. Geol. Soc. Am., Bull., vol. ii, pi. iii, p. 4. 1890. 

Cambrian (?). Georgia. 
Coldbrook group, Matthew. Can. Nat., vol. viii, pp. 244, 246-247. 1863. 

New Brunswick. 
Coldbrook group, Bailey and Matthew. Can. Geol. Surv., Rept., 1870-71, pp. 59-85. 
1873. 

Archean. New Brunswick. Included in Huronian. 
Coldbrook group, Bailey and Matthew. Can. Geol. Surv., Rept, 1875-76, pp. 350-352. 
1877. 

Huronian (?). New Brunswick. 



124 NOKTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Coldwater ehalet*, Lane. Mich. (ieol. Surv. Rept. State Board for 1891-92, p. 66. 
1898. 

Sub-Carboniferous. Michigan. 
Coldwater shales, Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 19. 1895. 

Michigan. Exact syn. Cuyahoga shale of Ohio. 
Coldwater group, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 26B, 65B-66B, 
68B-71B, 160B-164B. 1896. 

Tertiary. British (/oluinbia. Exact syn. Oligocene. 
Coldwater shales. Lane. U. S. Geol. Surv., Water-Supply papers, No. 30, pi. vi. 
1899. 

Carboniferous. Michigan. Part. syns. Waverly and Cuyahoga, 
Coldwater shale, Gordon. Mich. Geol. Surv., vol. vii, pt. iii, p. 7. 1900. 

Carboniferous. Michigan. 
Coldwater shale, Lane. Mich. Geol. Surv., vol. vii, pt. ii, pp. 24, 86. 1900. 

Carboniferous. Michigan. Exact syn. Cuyahoga. 
Cole Camp sandstone, Keyes. Mo. Geol. Surv., vol. vi, pp. 331, 366, 369. 1894. 

Cambrian. Missouri. Included in Gasconade limestone, Ozark series. Part. syn. 
St. Joseph limestone. 
Coleman- Albany, Dumble. Texas Geol. Surv., 1st Ann. Rept. pi. iii, p. Ixvii. 1890. 

Carboniferous. Texas. Included in Coal Measures. 
Coleman division, Tarr. Am. Geol., vol. vi, p. 152. 1890. 

Carboniferous. Texas. Included in Upper Carboniferous. 
Coleman beds, Tarr. Texas Geol. Surv., Bull. No. 3, pp. 14-15. 1892. 

Carboniferous. Texas. 
Coleman bed, Drake. Texas Geol. Surv., 4th Ann. Rept?., p, 424. 1893. 

Carboniferous. Texas. Included in Albany division. 
Coles Brook limestone, Emerson. U.S. Geol. Surv., Mon., vol. xxix, p. 27. 1898. 

Algonkian. Massachusetts. 
Coles Brook limestone, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 41. 1899. 

Pre-Cambrian. Massachusetts. Exact syn. Hinsdale limestone. 
Coles Brook limestone, Emerson. U. S.Geol. Surv., Bull. No. 159, pp. 41-43. 1899. 

Pre-Cambrian. Massachusetts. 
College Hill limestone, Safford. Geol. of Tenn., p. 276. 1869. 

Silurian. Tennessee. Included in Nashville formation. 
Collinsville limestone, Worthen. Econ. Geol. of 111., vol. iii, p. 332. 1882. 

Carboniferous. Illinois. Included in Coal Measures. 
Colorado group, P^ndlich. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept, 
pp. 126, 188, 192-215. 1877. 

Cretaceous. Colorado. Exact syn. Cretaceous, No. 2. 
Colorado, Hague. U. S. Geol. Explor. of 40th Parallel, vol. ii, pp. 28, 41-45. 1877. 

Cretaceous. Colorado. Includes Fort Benton, Niobrara, and Fort Pierre. 
Colorado group. King. U. S. Explor. of 40th Parallel, vol. i, pp. 305-320. 1878. 

Cretaceous. Colorado, Wyoming, Utah. Includes Fort Benton (Cretaceous, No. 2), 
Niobrara (Cret. No. 3), and Fort Pierre (Cret No. 4). 
Colorado, White. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept, pp. 19, 22, 
30. 1878. 

Cretaceous. Utah, Colorado. 
Colorado, Endlich. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept, pp. 75, 
109, 126. 1878. 

Cretaceous. Colorado. 
Colorado, Stevenson. Chief of Engineers' Rept., 1879, pt. iii, p. 2254. 1879. 

Cretaceous. New Mexico. Includes Fort Benton, Niobrara, and Fort Pierre. 
Colorado, Endlich. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 85, 
87, 109, 122. 1879. 

Cretaceous. Wyoming. 



WEEKS.] COLDW ATER COLUMBIA. 125 

Colorado group, Stevenson. U. S. Geog. and Geol. Surv. of 100th M., vol. iii, Suppl., 
p. 95. 1881. 
Cretaceous. Colorado, New Mexico. Includes Fort Benton, Niobrara, and Fort 
Pierre of Meek and Hayden, Nos. 2, 3, 4, and Middle Cretaceous of Newberry. 
Colorado group, Dutton. U. S. Geol. Surv., 6th Ann. Kept., pp. 136-140. 1885. 

Cretaceous. N W. New Mexico. Includes Dakota sandstone, and Colorado shales. 
Colorado, White. U. S. Geol. Surv., Bull. No. 82, pp. 158, 261. 1891. 

Cretaceous. Rocky Mts. Includes Niobrara and Fort Benton. Exact syns. Aus- 
tin limestone and Eagle Ford shale. 
Colorado formation. Cannon. Colo. Sci. Soc, Proc., vol. iv, p. 248. 1893. 

Cretaceous. Colorado. 
Colorado, Weed. U. S. Geol. Surv., Bull. No. 106, p. 17. 1893. 

Cretaceous. Montana. 
Colorado, Stanton. U. S. Geol. Surv., Bull. No. 106. 1893. 

Cretaceous. Rocky Mountains. 
Colorado, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 1. 
1894. 
Cretaceous. Montana. Includes Benton and Niobrara. 
Colorado, Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 1894. 

Cretaceous. Colorado. 
Colorado, Bain. Iowa Geol. Surv., vol. v, pp. 273-275. 1896. 

Cretaceous. Iowa. Includes Benton and Niobrara. 
Colorado, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cretaceous. Montana 
Colorado, Emmons, Cross, and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, pp. 26, 
64. 1896. 
Cretaceous. Colorado. Includes Benton, Niobrara. 
Colorado, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 1896. 

Cretaceous. Wyoming. Includes Benton and Niobrara. 
Colorado group. Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 45. 1896. 

Cretaceous. Montana. Includes Benton and Niobrara. 
Colorado, Bain. Iowa Geol. Surv., vol. viii, pp. 330-335. 1898. 

Cretaceous. Iowa. 
Colorado formation, Spurr. U. S. Geol. Surv., Mon., vol. xxxi, pp. 41-42. 1898. 

Cretaceous. Colorado. Includes Benton shales and Niobrara limestone. 
Colorado formation. Weed. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 55. 1899. 

Cretaceous. Montana. 
Colorado formation, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxii, pt. ii, 
pp. 1-59, 149-164. 1899. 
Cretaceous. Yellowstone Park. 
Colorado formation, Logan. Jour, of Geol., vol. vii, pp. 83-91. 1899. 

Cretaceous. Kansas and Nebraska. Includes Fort Benton and Niobrara. 
Colorado formation, Todd. U. S. Geol. Surv. , Water-Supply paper, No. 34, p. 15. 1900. 

Cretaceous. South Dakota. 
Columbia formation, McGee. U. S. Geol. Surv., 7th Ann. Rept., p. 594. 1888. 

Pleistocene. Maryland. 
Columbia formation, McGee. Am. Jour. Sci., 3d ser., vol. xxxv, pp. 367-388, pp. 
367-388, 448-466. 1888. 
Pleistocene. Atlantic Coast region. 
Columbia, McGee. Am. Assoc. Adv. Sci., Proc, vol. xxxvi, pp. 221-222. 1888. 

Pleistocene. Atlantic Coastal Plain. 
Columbia formation, McGee. U. S. Geol. Surv., 12th Ann. Rept, pt. i, p. 384. 1891. 

Pleistocene. Atlantic Coastal Plain. 
Columbia, McGee. Am. Assoc. Adv. Sci., Proc, vol. xxxix, p. 245. 1891. 
Pleistocene. Mississippi Valley. 



128 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Comanche Peak limestone, Vaughan. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 64. 1900. 

Cretaceous. Texas. Includeii in Comanche series. 
Comet Creek bed, Hill. Am. Jour. Sci., 3d ser., vol. 1, pp. 228-229. 1895. 

Cretaceous. Oklahoma. Included in Comanche. 
Come stage. Knight. Geol. Soc. Am., Bull., vol. xi, pp. 383-385. 1900. 

Jurassic. Wyoming. 
Conanicut arkose, Shaler, Wood worth, and Foerste. U. S. Geol. Surv., Mon., vol. 
xxxiii, p. 380. 1889. 

Carboniferous. Rhode Island. 
Conasauga shale, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Ordovician (?). Tennessee. Exact syn, Knox shale. 
Conasauga, Walcott. U. S. (leol. Surv., Bull., No. 81, p. 246. 1891. 

Cambrian. Georgia. Exact syn. Knox shale, Montevallo, Choccolocco. 
Conasauga shale, Hayes. Ala. Geol. Surv., Bull., No. 4, pp. 34, 39. 1892. 

Cambrian. Alabama. 
Conasauga shale, Hayes. Geol. Soc. Am., Bull., vol. v, p. 467. 1894. 

Cambrian. Georgia. 
Conasauga shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 2, 4, 6, 
20, 35. 1894-95, 1896. 

Cambrian. Georgia, Tennessee. 
Conasauga shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 35. 1896. 

Cambrian. Alabama. Exact syns. Montevallo or Choccolocco shale, Knox shale. 
Conasauga shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 1896. 

Cambrian. Tennessee. Includes Nolichucky shale and Marysville limestone. 
Exact syn. Knox shale. 
Conasauga shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 25. 1896. 

Cambrian. Tennessee. 
Conception slates, W^alcott. Geol. Soc. Am., Bull., vol. x, p. 220. 1899. 

Algonkian. Newfoundland. Included in Avalon terrane. 
Concretionary limestone, Worthen. Iowa Geol. Surv., vol. i, pt. i, pp. 190-191, 201, 
215-216, 226-227, 236-237, 242-243, 254-255. 1858. 

Carboniferous. Iowa. 
Concretionary limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Conemaugh formation, O'Harra. Md. Geol. Surv., Allegany County, p. 118. 1900. 

Carboniferous. Maryland. 
Conemaugh formation, Clark. Md. Geol. Surv., Phys. Atlas of Md., Allegany 
County. 1900. 

Carboniferous. Maryland. 
Conglomerate series, Fontaine. Am. Jour. Sci., 3d ser., vol. vii, pp, 463-465. 1874. 

Carboniferous. West Virginia. 
Conglomerate series, Fontaine. Am. Jour. Sci., 3d ser., vol. xi, p. 374. 1876. 

Carboniferous. AVest Virginia. 
Conglomerate Measures, White. 2d Pa. Geol. Surv., Rept. Q, pp. 33-58. 1880. 

Carboniferous. Pennsylvania. Includes Homewood sandstone, Mercer shales, 
Connoquenessing sandstone, Sharon conglomerate. Exact syn. No. xii. 
Conglomerate group, Orton. Ohio Geol. Surv., vol. vi, p. 43. 1888. 

Carboniferous. Ohio. Includes Homewood sandstone, Upper Mercer group, Lower 
Mercer group, Massillon sandstone, Upper Massillon sandstone. Lower Sharon 
conglomerate. 
Conglomerate group, Squire. Ala. Geol. Surv., Rept. on CahabaCoal field, pp. 14 et 
seq. 1890. 

Carboniferous. Alabama. Included in Coal Measures. 



WEEKS] COMANCHE PEAK — COOK's MOUNTAIN. 129 

Conglomerate group, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., 
pp. 43-44. 1890. 
Carboniferous. Ohio. Includes Horaewood sandstone, Mercer group, Massillon 
sandstones, and Sharon conglomerate. 
Connecticut River sandstone, Hitchcock. Am. Assoc. Adv. Sci., Proc, vol. ix, 
p. 225. 1855. 
Juratrias. Massachusetts. 
Connecticut Rivtr sandstone, Emmons. St. Louis Acad. Sci., Trans., vol. i, p. 102. 
1857. 
Connecticut. 
Connecticut sandstone, Hitchcock. Science, new ser., vol. i, pp. 74-77. 1895. 
Juratrias. Connecticut. Exact svn. Newark or Connecticut River sandstone. 
Connecticut River sandstone, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 
351-406. 1898. 
Juratrias. Massachusetts. Included in Trias. Includes Sugar Loaf arkose. Mount 
Toby conglomerate, Longmeadow brownstone, Chicopee shale, Granby tuff, 
Holyoke, Deerfield, and Black Rock beds. Part. syn. Newark. 
Connellsville sandstone, Piatt. 2d Pa. Geol. Geol. Surv., Rept. H*, p. 312. 1878. 

Carboniferous. Pennsylvania. 
Connellsville sandstone. White. U. S. Geol. Surv., Bull. No. 65, p. 87. 1891. 
Carboniferous. Pennsylvania, West Virginia. Included in Barren Measures, Elk 
River series. 
Connellsville sandstone. White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Upper Carboniferous. West Virginia. Included in Elk River series. 
Connoquenessingr sandstone, Piatt. 2d Pa. Geol. Surv., Rept. H^, p. 325. 1880. 

Carboniferous. Pennsylvania. 
Connoquenessing sandstone. White. U. S. Geol. Surv., Bull. No. 65, p. 201. 1891. 
Carboniferous. Ohio and Pennsylvania. Included in Potts ville conglomerate 
series. Part. syn. Massillon sandstone. 
Connoquenessing sandstone, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, 
pt. i, p. 1911. 1895. 
Carboniferous. Pennsylvania. Exact syn. Massillon sandstone of Ohio. 
Consholiocken clay, Hopkins. Geol. Soc. Am., Bull., vol. x, pp. 480-484. 1900. 

Pennsylvania. 
Contra Costa lake bed, Cooper. Cal. Acad. Sci., Proc, 1893-94, 2d series, vol. iv, 
p. 169. 1895. 
Pliocene. California. Included in Pliocene fresh-water beds. 
Conway schist, Emerson. CJ. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Silurian. Massachusetts. 
Conway schists, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 

Ordovician ? Massachusetts. 
Conway schists, Emerson. U. S. Geol. Surv., Hon., vol. xxix, pp. 177-200. 1898. 

Silurian. Massachusetts. 
Conway schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 
1898. 
Silurian. Massachusetts. 
Cook Inlet gravels, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 174-175. 
1900. 
Pleistocene. AJaska. 
Cook's Mountain beds, Dumble. Texas Geol. Surv., Rept. on brown coal, pp. 141- 
143. 1892. 
Tertiary. Texas. Included in Timber Belt division of Eocene. 

Bull. 191—02 9 



130 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Cook's Mountain series, Kenne<ly. Texas Geol. Surv., 3d Ann. Rept., pp. 54-57. 
1892. 

Tertiary. Texas. Included in Tim))er Belt beds of Eocene. 
Coon Mountain bed, Drake. Texas (leol. Surv., 4th Ann. Rept., p. 417. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Cooper marble, Meek. Mo. Geol. Surv., Repts. 1855-1871, p. 176. 1873. 

Carboniferous. Missouri. 
Cooper River beds, Pratt. Ashley river phosphates. 1808. 

Tertiary. South Carolina. Included in Eocene. 
Cooper River beds, Holmes. Phosphate Rock of South Carolina. 1878. 

Tertiary. South Carolina. Included in Eocene. Part. syn. Eocene marl. 
Coo|)er River marls, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 342. 189S. 

Tertiary. South Carolina. Include<i in Vicksburgian stage, Oligocene. 
Coos group, Hitchcock. Boston Soc. Nat. Hist, Proc, vol, xv, 1872-73, p. 307. 1873. 

New Hampshire. Includes Calciferous mica schists. 
Coos group, Hitchcock. Am. Jour. Sci., 3d ser., vol. vii, pp. 474-475. 1874. 

New Hampshire. 
Coos quartzite, Huntington, (xeol. of New Hamp., pt. ii, pp. 412-421. 1877. 

Paleozoic. New Hampshire. 
Coos group, Huntington. Geol. of New Hamp., pt. ii, pp. 38-47, 316-320, 372, 442. 
1877. 

Paleozoic. New Hampshire. Includes Coos quartzite. 
Coos group, Hitchcock. Jour, of Geol., vol. iv, p. 55. 1896. 

Silurian (?). New Hampshire. 
Coos group, Hitchcock. Geol. Soc. Am., Bull., vol. vii, p. 510. 1896. 

Cambrian. Vermont. 
Coos conglomerate, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 336. 1898. 

Pleistocene. Oregon. 
Coosa shale, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Cambrian (?). Tennessee, Georj^ia. 
Coosa shale, Smith. Ala. Geol. Surv., Rept. on Cahaba Coal field, p. 148. 1890. 

Cambrian. Alabama. 
Coosa, Walcott. U. S. Geol. Surv., Bull., No. 81, p. 247. 1891. 

Cambrian. Alabama and (Georgia. 
Coosa shale, Hayes. Ala. Geol. Surv., Bull., No. 4, pp. 34, 35. 1892. 

Cambrian. Ala))ama. 
Coosa shale, Gibson. Ala. (leol. Surv., (ieol. Struct, of Murphrees Valley, pp. 26, 
90. 1893. 

Cambrian. Alabama. Exact syn. S])arry limestone. 
Coosa shales, McCalley. Ala. (ieol. Surv., Rept. on Valley regions, pt. ii, pp. 
42-44, 189-191, 254-256, 311-314, 453-456, 484-485, 514-516, 588-593, 712-713, 
767-768. 1897. 

Cambrian. Alabama. Exact syn. Flat wood shales, Conasauga. 
Copper-bearing series of Lake Superior, Logan. Can. Geol. Surv., Rept., 1843-1863, 
pp. 67-86. 1863. 

Canada. Includes Upper and Ix)wer Copper-l>earing groups. 
Copper- bearing series. Upper, MacFarlane. Can. Geol. Surv., Rept, 1863-1866, 
pp. 132-147. 1866. 

Canada. Included in Copper-bearing series of Lake Sui)erior. Exact syn. Quebec 
and Potsdam groups. 
Copper- bearing rocks, Wadsworth. Am. Assoc. Adv. Sci., Proc., vol. xxix, pt. ii, 
pp. 429-430. 1881. 

Potsdam. Michigan. 



WEEKS.] COOK^S MOUNTAIN CORNIFEROUS. 131 

Copper River silts and gravels, Schrader. U. 8. Geol. Surv., 20th Ann. Kept, 
pt. vii, pp. 410-412. 1900. 

Alaska. 
Coqtiina beds, Hill. Wash. Biol. Soc., Proc., vol. viii, p. 14. 1893. 

Cretaceous. Texas. Included in Trinity division of Comanche series in Glen 
Rose beds. 
Coral beds, Upper and Lower, Chamberlin. Geol. of Wis., vol. ii, pp. 349-356. 
1877. 

Upper Silurian. Wisconsin. Included in Niagara. 
Coral beds, Chamberlin. Geol. of Wis., vol. i, p. 187. 1883. 

Silurian. Wisconsin. Included in Niagara. Includes Upper and Lower Coral. 
Coral limestone, Langdon. Geol. Soc. Am., Bull., vol ii, p. 588. 1891. 

Tertiary. Alabama. Included in Eocene (Upper). 
Coralline limestone. Hall. Paleontology of New York, vol. ii, pp. 321-322. 1852. 

Silurian. New York. 
Coralline Falls limestone, Owen. Ky. Geol. Surv., vol. i, pp. 95-97. 1856. 

Devonian. Kentucky. 
Coralline limestone, Barrett. Am. Jour. Sci., 3d ser., vol. xv, p. 370. 1878. 

Silurian. New Jersey. Exact syn. Niagara limestone. 
Coralline beds, Pratt. Ashley River phosphates. 1868. 

Tertiary. South Carolina. Included in Eocene. 
Coralline beds, Norton. Iowa Geol. Surv., vol. iv, pp. 128-129. 1895. 

Silurian. Iowa. Included in Upper Silurian. 
Corbin conglomerate lentil, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 46. 1898. 

Carboniferous. Kentucky. 
Corbin conglomerate lentil, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 47. 1898. 

Carboniferous. Kentucky. Included in Pennsylvanian series. 
Cornfield Harbor clays, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 336. 
1898. 

Pleistocene. Maryland. 
Comiferous lime rock, Eaton. Am. Jour. Sci., 1st ser., vol. xxxvi, pp. 61-71. 
1839. 

New York. Exact syn. Cherty lime rock. 
Comiferous limestone, Douglass. Michigan Legis. Doc, vol. i. No. ix (4th Ann. 
Rept. State Geol., 1840), p. 550. 1841. 

Michigan. 
Comiferous limestone, Vanuxem. Geol. of New York, pt. iii, pp. 139-146. 1842. 

Paleozoic. New York. Included in New York system. Includes Seneca limestone. 
Comiferous limestone, Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 
161-170. 1843. 

Paleozoic. New York. Included in New York system. Includes Seneca lime- 
stone. Part. syn. Comiferous limerock. 
Comiferous limestone, Mather. Geol. of New York, pt. i, pp. 337-338. 1843. 

Paleozoic. New York. Included in Helderbcr^ divisicm. 
Comiferous limestone, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 64. 1846. 

Devonian. New York. Includes Seneca limestone. 
Comiferous formation. Chapman. Can. Inst., new ser., vol. viii, pp. 441-444. 1863. 

Devonian. Canada. 
Comiferous formation, Logan. Can. Geol. Surv., Rept., 1843-1863, pp. 361-379, 1863. 

Devonian. Canada. Included in Upper Ilelderberg group. 



132 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (bollIM, 

CorniferouB limeelone, Dawson. Am. Jour, Bci., 2d eer., vol. xxxv, pp. 314-319. 
1863. 

Oevonian. Canada. 
CorniferouH limestone, Hunt. Am. Jour. Sci., 2d8er., vol. xlvi, pp. 357-;W2. 1868. 

Devonian. Canada. Included in Lower Devonian. 
Comiterous limestone, Cook. Geol. of New Jereey, pp. 1B5-166. 1868. 

Devonian. New Jereey, 
Corniterous, Winchell. Ohio Geol. Surv., vol. i, pt i, pp. 603, 619, 636, 642. 1873. 

Devonian. Ohio. 
ComiferouB, Gilbert. Ohio Geol. Surv., vol. i, pt. i, p. 575. 1873. 

Silurian. Ohio. 
Corniferoua, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp, 67, 1(B, 142. 1873. 

Devonian. Ohio. 
Comiferous, Winchell. Am. Absoc. Adv. Sci., Proc., vol. xxii, p. 102, 1873, 

Devonian. Ohio. 
CorniferouB, Newberry. Ohio Geol. Surv., vol. ii, p. 190. 1874. 

Devonian. Ohio. 
Comiferous, Andrews, Ohio Geol. Surv., vol. ii, p. 591. 1874. 

Devonian. Ohio. 
Corniferoiis, Winchell. Ohio Geol. Surv., vol. ii, pp. 243, 289, 328, 339, 356, 383. 
1874. 

Devonian. Ohio. Includes Upper and Lower Comiferous. 
Corniferous, Winchell. Am. Assoc. Adv. Sci., Proc., vol. xxiv, p. 57. 1875. 

Devonian. Ohio, Michigan. 
Comiferous, Hotchkiss. A GeoRraphical and Political Summary of Virginia. lR7fi. 

Devonian. Virginia. Included in Devonian or Old Red Sandstone. Exact eyn. 
Post-Meridian, Formation viii. 
Comiferous, Orton. Ohio Geol. Surv., vol. iii, p. 603. 1878. 

Devonian. Ohio. 
Comiferous, Newberry. Ohio Geol. Surv., vol. iii, p. 10. 1878. 

Devonian. Ohio. 
Corniferoua, Hall. Albany Inst., Trans., vol. ix, pp. 169-175. 1879. 

Devonian. Ohio. 
Comiferous limestone. Miller, Cin. Soc, Nat, Hist., Jour., vol. iv, No. iv, p. 291. 

1881. 
Corniferoua limestone, Worthen. Econ. Geol. of 111., vol. i, p. 482. 1882. 

Devonian. Illinois. 
Corniferous, White. 2d Pa. Geol. Surv., Kept. G«, pp 116-121. 1882. 

Devonian. Pennsylvania. Included in Upper Helderlierg of No. viii. 
Corniferous, Linney. Ky. Geol. Surv., Geol. of Garrard County, p. 21. 1883. 

Devonian. Kentucky. 
Corniferoua limestone, Linney. Ky. Geol. Surv., Geol. of Spencer and Nelson coun- 
ties, pp. 45-46. 1884. 

npvnnian Kcnltirkv. 

y. Ky. Geol. Surv., Geol. of Clark and Montgomery 



ol. Surv., Geol. of Marion County, p. 17. 1885. 

eol. Surv., Geol, of Bath County, p. 23. 1886. 

eol. Surv., Rept. P, pp. 71-73, 118-120, 136. 18( 
Included in No. viii. 
I. Ark. Geol. Surv., 1890, vol. iv, p. 52. 1890. 



WEEKS.] CORNIFEROUS COTTONWOOD. 133 

CJomiferous limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1153 
et seq. 1892. 

Devonian. Pennsylvania. Included in No. viiia. 
Comiferous limestone, Prosser. N. Y. State Geol., 12th Ann. Rept., pp. 110-142. 
1893. 

Devonian. New York. 
Comiferous, Bruraell. Geol. Soc. Am., Bull., vol. iv, pp. 227, 229. 1893. 

Devonian. Ontario. 
Comiferous, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Lower Devonian. Includes 
Upper Helderberg, Cauda-Galli grit. 
Comiferous, Gallaher. Mo. Geol. Surv., Bien. Rept., p. 27. 1898. 

Devonian. Missouri. 
Corral sandstone, Cragin. Am. Geol., vol. xvi, p. 366. 1895. 

Cretaceous. Kansas. Included in Bel vide re beds, Cheyenne sandstone. 
Corry sandstone. White. 2d Pa. Geol. Surv., Rept. Q*, pp. 92-94. 1881. 

Carboniferous. Pennsylvania. Included in Oil Lake group. 
Corry sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, p. 1769. 1895. 

Carboniferous. Pennsylvania. Included in Oil Creek Lake group of No. x, Pocono. 
Cortlandt series, Dana. Am. Jour. Sci., 3d ser., vol. xxi, pp. 103-119. 1881. 

New York. 
Cortlandt series, Williams. Am. Jour. Sci., 3d ser., vol. xxxi, p. 26. 1886. 

New York. 
Cortlandt series, Williams. Am. Jour. Sci., 3d ser., vol. xxxiii, pp. 135-144, 191-199, 

1887. New York. 
Cortlandt series, Williams. Am. Jour. Sci., 3d ser., vol. xxxv, pp. 438-448. 1888. 

New York. 
Cortlandt series, Williams. Johns Hopkins Univ. Circ, vol. vii, pp. 63-65. 1888. 

Paleozoic (?). New York. Includes Eruptive rocks of Cortlandt Township, N. Y. 
Coryphodon beds, Osbom. Am. Mus. Nat. Hist., Bull., vol. vii, p. 73. 1895. 

Eocene. Included in Upper Eocene. Exact syn. Wahsatch. 
Cottonwood Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 382. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Cottonwood, Prosser. Geol. Soc. Am., Bull., pp. 29, 39. 1894. 

Permian. Kansas. 
Cottonwood formation, Prosser. Jour, of Geol., vol. iii, pp. 697-705. 1895. 

Carboniferous. Kansas. Included in Upper Carboniferous. 
Cottonwood limestone, Prosser. Kan. Univ. Quart., vol. vi, pp. 151-155, 161, 164- 
165, 168, 175. 1896. 

Carboniferous. Kansas. 
Cottonwood shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 164-165. 1896. 

Carboniferous. Kansas. Included in Cottonwood formation. 
Cottonwood Falls limestone, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 164, 167. 
1896. 

Carboniferous. Kansas. 
Cottonwood Falls limestone. Kirk. Kan. Univ. Geol. Surv., vol. i, pp. 81, 83-85. 
1896. 

Carboniferous. 
Cottonwood Falls limestone, Grimsley. Geol. Soc. Am., Bull., vol. viii, p. 229. 1897. 

Permian. Kansas. 
Cottonwood formation, Prosser. Jour, of Geol., vol. v, pp. 5-10. 1897. 

Carboniferous. Kansas and Nebraska. Included in Upper Carboniferous. 
Cottonwood limestone, Beede. Kan. Univ. Quart., vol. vii, pp. 231-233. 1898. 

Carboniferous. Nebraska. 



134 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Cotton wockI limestone, Beede. Kansas Acad. Sci., Trans., vol. xvi, pp. 71, 84. 1899. 

Carboniferous. Nebraska. 
Cottonwood limestone, Keyes. Am. Geol., vol. xxiii, pp. 310-311. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Cottonwood limestone, Keyes. Iowa Acad. Sci., Proc., vol. vii, p. 95. 1900. 

Carboniferous. Mississippi Valley. Include<l in Coal Measures. 
Cottonwood formation, Beede. Kan. Univ. Quart., vol. ix, p. 193. 1900. 

Carl>oniferou8. Kannas. 
Courtland (luartzite. Hall. U. S. (xeol. Surv., Bull., No. 157, p. 23. 1899. 

Pre-Cambrian. Minnenota. 
Coutchiching series, Lawson. Can. Geol. Surv., new^er., vol. iii, pt. i, pp. 99F- 
lllF. 1889. 

Archean. Canada. 
Coutchiching, Lawson. Geol. Soc. Am., Bull., vol. i, pp. 176, 182. 1889. 

Huronian. Canada. 
Coutchiching series, Smith. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 17G, 39G- 
56G. 1893. 

Archean. Canada. Part syn. Huronian (?). 
Coutchiching, Smith. Geol. Soc. Am., Bull., vol. iv, pp. 333, 340. 1893. 

Lauren tian(?). Ontario, Canada. 
Coutchiching, Winchell and Grant. Minn. Geol. and Nat. Hist. Surv., 23d Ann. 
Rept., p. 62. 1895. 

Minnesota. Included in Ontarian. Exact syn. Vermilion. 
Coutchiching, Mclnnes. Can. Geol. Sur., new ser., vol. x, pp. 174-184. 1898. 

Ontario. 
Coutchiching, Coleman. Geol. Soc. Am., Bull., vol. ix, p. 224. 1898. 

Algonkian. Ontario. Included in Ontarian. 
Coutchiching, Grant. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iv, p. 176. 
1899. 

Archean. Minnesota. 
Coutchiching, Winchell and Grant. Minn. Geol. and Nat. Hist. Surv., Final Rept., 
vol. iv, p. 199. 1899. 

Minnesota. Included in Ontarian. 
Cove, Rogers. Pa. State Geol., 1st Ann. Rept., p. 13. 1836. 

Silurian (?). Pennsylvania. 
Coxville sandstone, Ashley. Indiana Dept. Geol. and Nat. Res., 23rd Ann. Rept. 
(1898), p. 300,385. 1899. 

Carboniferous. Indiana. 
Crab Orchard shale, Linney. Ky. Geol. Surv. (Proctor), Geol. of Lincoln County. 

1882. Silurian. Kentucky. Included in Clinton group. 
Crab Orchard shale, Foerste. Jour, of Geol., vol. v, p. 171. 1895. 

Silurian. Kentucky. Included in Clinton. 
Cranberry Island series, Shaler. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 1043. 
1889. 

Maine. 
Cranston beds, Shaler, Wood worth and Foerste. U. S. Geol. Surv. , Mon. , vol. xxxiii, 
pp. 159-163. 1899. 

Carboniferous. Rhode Island. Included in Coal Measures. Includes Pawtucket 
shales, Sockanosset sandstones. 
Crawford shale, Carll. 2d Pa. Geol. Surv., Rept. I^, pp. 93-95, 128. 1890. 

Carboniferous. Pennsylvania. Included in Pocono, Vespertine. 
Cretaceous No. 1, Marvine. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 100. 1874. 

Cretaceous. Colorado. 



WEEKS] COTTONWOOD — CUMBERLAND. 135 

Cretaceous No. 1, Endlich. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept, 
p. 222. 1876. 
Cretaceous. Colorado. 
Cretaceous No. 2, Marvine. IT. S. Geol. and Geog. Surv. of Terr., 1873, p. 101. 1874. 

Cretaceous. Colorado. 
Cretaceous No. 2, Endlich. U. S. (xeol. and Geog. Surv. of Terr., 8th Ann. Rept., 
p. 224. 1876. 
Cretaceous. Colorado. 
Cretaceous No. 3, Marvine. U. S. Geol. and (leog. Surv. of Terr., 1893, p. 102. 1874. 

Cretaceous. Colorado. 
Crinoidal limestone, Borden. Indiana Geol. Surv., 5th Ann. Rept., p. 157. 1874. 

Indiana. 
Crinoidal limestone. White. U. S. Geol. Surv., Bull., No. 65, p. 90. 1891. 

Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Barren Measures, 
Elk River series. Exact syns. Green fossiliferous limestone, 1st Pa. Surv.; 
Ames limestone, Ohio Surv. 
Croatan beds, Dall. Wagner Free Inst. Sci., vol. iii, pt. ii, p. 209. 1892. 

Pliocene. South Carolina. Included in Pliocene (Floridian epoch). Part. syn. 
Floridian group. 
Croatan beds, Dall. IJ. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 337. 1898. 

Tertiary. North Carolina. Included in Pliocene. 
Cross Plains sandstone, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Included in Appleton stage. 
Crosswicks group, Conrad. Am. Jour. Sci., 2d ser., vol. xlvii, p. 359. 1869. 

Cretaceous. New Jersey. 
Crosswicks clays, Clark, Bagg, and Shattuck. Geol. Soc. Am., Bull., vol. viii, pp. 315, 
329. 1897. 
Cretaceous. New Jersey. Included in Matawan formation. 
Crosswicks clays, Clark, Bagg, and Shattuck. N. J. Geol. Surv., Rept. 1897, p. 178. 
1898. 
Cretaceous. New Jersey. Included in Matawan formation. 
Crystal city sandstone, Keyes. Mo. Geol. Surv., vol. vi, pp. 331, 352, 358. 1894. 
Cambrian. Missouri. Included in Ozark aeries. Exact syn. Roubidoux or 
Saccharoidal sandstone. 
Crystal sandstone, Wheeler. Mo. Geol. Surv., vol. xi, p. 39. 1896. 

Ordovician. Missouri. Included in Ozark series. 
Cuboides zone, Williams. Geol. Soc. Am., Bull., vol. i, p. 485. 1889. 

Devonian. New York. Exact syn. Tully limestone. 
Cuchsira beds. Hills. Colo. Sci. Soc, Proc, vol. iv, p. 9. 1891. 

Tertiary. Colorado. Included in Lower Eocene, Huerfano series. 
Cuchara beds, Osborn. Am. Nat., vol. xxxi, p. 967. 1897. 

Cretaceous. Colorado. 
Cuchara formation. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Tertiary. Colorado. Included in P^ocene(?). 
Cumberland sandstone, Shaler. Ky. Geol. Surv. , new ser. , vo\. m, pp. 159-160. 1877. 

Silurian. Kentucky. Part. syn. Oneida conglomerate and Medina sandstone. 
Cumberland quartzites, Shaler, Woodworth, and Foerste. U. S. Geol. Surv., Mon., 
vol. xxxiii, p. 106. 1899. 
Algonkian. Rhode Island. Included in Blackstone series. 
Cumberland sandstone, Foerste. Ind. Dept. Cieol. and Nat. Res., 24th Ann. Rept., 
pp. 57-63. 1900. 
Silurian. Indiana. Included in Middle Silurian. 



130 NURTH AMERICAN GEOLOGIC FORMATION NAMES. |biill.191. 

Cupriferous wries, Wiiichell. Am. Abboc. Adv. Sti., Pro*., vol. zxix, pt. ii, pp. 
422-42ri. 1881. 

Minntwota. 
Curlew BanilBtone and limestone, Owen. Ky. Geol. Surv.,vol, iii, pp. 13, 23. 1857. 

Carboniferous. Kentucky. Included in Coal Kteasures. Exact syn. Mahoning 
sandstone of Fa.(?). 
Curlew limestone, Lesquereux. Ind.Geol. Reconn., Rept. 1859-1860, p. 310. 1862. 

CarlKintferoii)!. Indiana 
Curlew limestone, Le.'^iuereuT 111 Geol. Surv,, vol. i, p. 216. 1866. 

Carboniferous. Illinois InclntUd in Coal IMcasures. 
Curlew limestone, I.,esquereux 111 Geoi. Sun-., vol. i, pp. 216, 222, 227. 1866. 

Carboniferous. Illinois Imluded in Coal Measures. 
CurzoD limestone, Gallaher Mo Geol Surv., Bien. Rept., p. 57. 1898. 

Permian. Missouri. 
CuBsewa^, White. 2d Pa Geo! Sun , Bept. Q', pp. 94-96. 1881. 

Carb'iniferoiiB. PennsjUania Included in Oil Lake group. 
CiiJwewapo, U^sley. 2<l Pa Geoi Sur\ Final Rept., vol. iii. pt. i, p. 1773. 1895. 

Carl>oniferous, Pennsjiiania. Included in Oil Creek. I^ke group of No. x, 
Po<'ono. 
Cuyahoga Hhale, Newberry. OhioGeoI. Surv., Rept. Prog., 1869, pp. 21, 29. 1870. 

Carboniferous. Ohio. 
Cuyahoga shale, Newberry. Ohio Geol. 8ur\-., Rept. Prog., 1869, p. 22- 1871. 

Carboniferous. Ohio. IncliKled hi Waverly group. 
Cuyahoga shale, Ri'id. Ohio Geol. Surv,, Rept. Pr(«., 1870, p. 469. 1871. 

Ohio. 
Cuyahoga sliale, Newberry. Ohio Geol. Sun-., vol. i, pt. i, pp. 185, 210. 1873. 

Carboniferous. _ Ohio. Included in Waverly. 
Cuyahoga shale, Reiiil. Ohio Geol. Surv., vol. i, pp. 495, 512, 525. 1873. 

Carboniferous. Ohio. 
Cuyahoga, Wincliell. Ohio Geol. Surv., vol. ii, pp. 240, 267, 276. 1874. 

Carboniferons. Ohio. 
Cuyahoga shale, Newlwrry. Ohio Geol. Sun-., vol. ii, pp. 87-88, 210. 1874. 

Carboniferous. Ohio. Included in Waverly. Lower Carboniferous. 
Cuyahoga, Lesley. 2d Geol. Surv. of Pa., Rfli)t. I. pp. 67-69. 1875. 

Carlxiniferous. Pennsylvania anil Ohio. Exact syn. No. xi. 
Cuyahoga shale. Read. Ohio Geol. Surv., vol. iii, \>. 299. 1878. 

CarboniferoLLJ. Ohio. Includeil in AVaverly. 
Cuyaht^ shale, Orton. Rev. of Strat. of eastern Ohio, p. 10. 1880. 

Carboniferous. Ohio. 
Cuyahoga shale, Orton. OhioGeoI. Sun-,, Prelim. Rept. Petroleum and Inflamma- 
ble Gas, p. 25. 1886. 

Ohio. Included in Waverly series. 
CuvahoL'a shale. Orton. Ohio Geol. Surv., vol. vi, pp. 3, 37. 1888. 

I In Waverly proui>. 

n Uiilv. Sci. Lab,, Bull., vol. iv, p. 105. 1888. 
. Logan and Kinderhook. 

II Univ. Sfi. Ijb., Bull., vol. iv, p. 103. 1888. 

Univ. Sci. Lab., Bull., vol. iv, p. 62. 1888. 

)1. Surv., 3d Organ i7.ation, 1st Ann. R«pt., pp. 

I. Sharpsvillo sandstone of Pa. (White). 
Tuiv, Sd. Uh., Bull., vol. v, pp. 30, 31. 1890. 



WEEKS.] CUPRIFEROUS — DAKOTA. 137 

Cuj^ahoga shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 31. 1893. 

Carboniferous. Ohio. Included in Waverly group. 
Cypress sandstones, Engelmann. St. Louis Acad. Sci., Trans., vol. ii, p. 189. 1868. 

Lower Carboniferous. Illinois. 
Dakota group, Meek and Hayden. Phil. Acad. Nat. Sci., Proc, vol. xiii, pp. 410, 
420. 1862. 
Nebraska. Included in Lower Cretaceous. Exact syn. Formation No. i. Part, 
syn. (vid. Niobrara). 
Dakota group, Hayden. Am. Jour. Sci., 2d ser., vol. xliii, pp. 171-179. 1867. 
Cretaceous. Nebraska, Dakota, Minnesota, Kansas, and New Mexico. Exact syn. 
No. i Cretaceous. 
Dakota, Hayden. U. S. Geol. Surv. of Wyoming, Kept., p. 87. 1871. 

Cretaceous. Included in Lower Cretaceous. Exact syn. Formation No. i. 
Dakota, Hayden. U. S. Geol. Surv. of Terr., l-3d Ann. Repts., pp. 49, 50. 1873. 

Cretaceous. Exact syn. Formation No. i. 
Dakota group, Lesquereux. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. vi, 
pp. 1-31. 1874. 
Cretaceous. 
Dakota group, Meek. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ix, pp. xxvi- 
xxviii. 1876. 
Cretaceous. 
Dakota, Lesquereux. U.S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 316. 
1876. 
Cretaceous. 
Dakota, Peale. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 128. 1876. 

Cretaceous. Colorado. Exact svn. Formation No. i. 
Dakota, Hague. U. S. Geol. Explor. of 40th Parallel, vol. ii, pp. 28, 39-41. 1877. 

Cretaceous. Colorado. 
Dakota, Mudge. U. S. Geol. Surv. of Terr., 9th Ann. Rept., p. 291. 1877. 

Cretaceous. Kansas. 
Dakota, Endlich. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., pp. 124, 181. 
1877. 
Cretaceous. Colorado. Exact syn. Cretaceous No. 1. 
Dakota, Peale. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., p. 88. 1877. 

Cretaceous. Colorado. Exact syn. Formation No. i. 
Dakota, White. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept, pp. 19, 22, 
29. 1878. 
Cretaceous. Utah and Colorado. 
Dakota, King. U. S. Geol. Explor. of 40th Parallel, vol. i, pp. 298-304. 1878. 

Cretaceous. Colorado and Utah. 
Dakota, Endlich. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 74, 
108, 127. 1878. 
Cretaceous. Colorado. 
Dakota, Stevenson. Chief of Engineers' Ann. Rept., pt. iii, p. 2254. 1879. 

Cretaceous. New Mexico. 
Dakota, Endlich. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 84, 87, 
108, 122. 1879. 
Cretaceous. Wyoming. 
Dakota group, Newton. Geol. of Black Hills, pp. 174-186. 1880. 

Cretaceous. South Dakota. 
Dakota, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th Meridian, vol. iii, Suppl., 
pp. 88-93. 1881. 
Cretaceous. Colorado and New Mexico. Includes Upper, Middle, and Lower 
Dakota. 



138 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (apLLiSi. 

Dakota group, Stembei^r. Kan.suH City Rev., vol. iv, pp. 675-677. 1881. 

Cretaceoiiii. KatiHas. 
Dakota group, Lc-w inert iii, U. S. Geol. anil Ueog. Surv. of Terr., Mon., vol. viii, 
pp. 2-24. 1883. 

CretaceouB. 
Dakota, Hk'ks. Am. Awioc Adv. Sci., Proc, vol. xxxiv, p. 217. 1886. 

CretoceoiiH. Nebraska. 
Dakota, Stevenson. Am. Geol., vol. iii, p. 3.9.1. 1889. 

Cretaceous. Colorado and Ne«- Mexico. Includes I'pper, Middle, and Lower 
Dokdta. 
Dakota. White. IT. S. Geol. Surv., Bull. So. 82, pp. 171,257. 1891. 

Cretaceoua. Rocky Mountainn. 
Dakota, Weed. Geol. Soc, Am., Bull., vol. iil, p. 310. 1892. 

Cretaceous, Montana. 
Dakota formation, Taft. Texas Geol. Surv., 4th Ann. Kept., pp. 285-298. 1893. 

Cretaceous. Texas. Inchiiled in Upi>er Cretaceous. Includes Timber Creek 
l)eds, Dexter sand, and Baaal clay. Exact Byn. I^ower Cross tiir ar. 
Dakota, Weed. U. S. (ieol. Surv. Bull., No. 106, p. 17. 1893. 

Cretaceous. Montana, 
Dakota group, Calvin. Iowa Geol. Surv., vol. i, pp. 148, 161. 1893. 

Cretaceoua. lo^'a. Kxact syns. Woodbnry sandsloncB and shales. 
Dakota sandstone. Cannon. Colo. Sci. Soc., Proc, vol. iv, p. 247. 1893. 

CretaceouB. Colorado. 
Dakota, Cross. U. S. Geol. Surv., Geol. Atlae of U. 8., Folio No. 7. 1894. 

Cretaceous. Colorado. 
Dakota, Eldriilge. (J. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 18W. 

Cretaceous. Colorado. 
Dakota, Iddings and Weed, U. S. Geol. Surv., Geol. Atlas of U. S., Polio No. I. 
1894. 

CrelaceouM. Montana. 
Dakota, Bain. Iowa Geol. Surv., vol. iii, pp. 101-114. 1895. 

Cretaceous. Iowa. 
Dakota group, Gilbert. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 562. 1896. 

Cretaceous. Colorado. 
Dakota, I'eale. U. S. lieol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cretaceous. Montana. 

dridge. U. S. Geol. Surv., Mon., vol, xxvii, pp. 25, 



v., Geol. Atla.f of U. S., Folio >fo. 30. 1896. 

8. Geol. Surv., Bull. No. l;W, ]>. 45. 1896. 

■.,vol.v,pp, 267-273. 1896. 

■., vol, vii, pp. 451-459. 1897. 

. Geol. Surv., Geol. Atlas ot U. S,, Folio No, 36, 1897. 

ol. Surv., vol, ii, pp, 206-215. 1897. 

n. Univ. Geol. Surv., vol. ii, pp. 182-194, 1897. 
Includes Mentor beds of the Comanche series, 
ol. Surv., vol. iv, pp, 25-27. 1898. 
Kansas. 



WEEKS.] DAKOTA DAVENPORT. 139 

Dakota, Bain. Iowa Geol. Surv., vol. viii, pp. 329-330. 1898. 

Cretaceous. Iowa. 
Dakota, Weed. U. S. Geol. Surv., 18th Ann. Kept., pt. iii, p. 477. 1898. 

Cretaceous. Montana. 
Dakota formation, Spurr. U. S. (ieol. Surv., Mon.,vol. xxxi, p. 41. 1898. 

Cretaceous. Colorado. 
Dakota sandstone. Ward. U. S. Geol. Surv., 19th Ann. Rept., i)t. ii, p. 593. 1899. 

Cretaceous. South Dakota. 
Dakota sandstone, Hills. U. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 58. 1899. 

Cretaceous. Colorado. 
Dakota group, Jenney. U. S. Geol. Surv., 19th Ann. Kept., pt. ii, pp. 56H-587. 1899. 

Cretaceous. South Dakota. 
Dakota formation, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 55, 56. 
1899. 

Cretaceous. Montana. 
Dakota formation, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 

Cretaceous. Yellowstone Park. 
Dakota formation. Cross. U. S. Geol. Surv., (leol. Atlas of U. S., Folio No. 57. 1899. 

Cretaceous. Colorado. 
Dakota formation, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 58. 1899. 

Cretaceous. Colorado. 
Dakota, Bain. Iowa Geol. Surv., vol. xiv, p. 73. 1899. 

Cretaceous. Iowa. 
Dakota sandstone, Wilder. Iowa Geol. Surv., vol. iv, p. 110. 1900. 

Cretaceous. Iowa. 
Dakota, Logan. Kan. Univ. Quart, vol. ix, pp. 115-118. 1900. 

Cretaceous. Kansas. 
Dakota sandstone, Todd. U. S. Geol. Surv., Water-Supply papers, No. 34, p. 13. 
1900. 

Cretaceous. South Dakota. 
Dakota sandstone, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Cretaceous. Colorado. 
Dallas limestone. Hill. Am. Jour. Sci., 3d ser., vol. xxxiii, p. 298. 1887. 

Cretaceous. Texas. Included in (iulf series. 
Dalton phyllite, Emerson. U. S. Geol. Surv., Geol. Atlas of U.S., Hawley sheet. 
1892. 

Cambrian. Massachusetts. Part. syn. Stockbridjre limestone. 
Damourite slate, Prime. 2d Pa. Geol. Surv., Rept. D^, pj). 23-24. 1878. 

Silurian. Pennsylvania. 
Danville stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, j). 51. 1896. 

Carboniferous. Arkansas. 
Davenport beds. Lower, Norton. Iowa Acad. Sci., Proc, vol. i, pt. iv, p. 24. 1894. 

Devonian. Iowa. Exact syn. Gyroceras bed. Part. syns. (.orniferous, Fayette 
breccia. 
Davenport beds, Upper, Udden. Cin. Soc. Nat. Hist., Jour., vol. xix, no. iii, p. 93. 
1897. 

Devonian. Illinois. 
Davenport beds, Lower, Udden. Cin. Soc. Nat. Hist., Jour., vol. xix, no. iii, p. 93. 
1897. 

Devonian. Illinois. 
Davenport, Norton. Iowa Geol. Surv., vol. xiv, p. 443. 1899. 

Devonian. Iowa. Included in Wapsipinicon. Includes Upper and Lower 
Davenport. 



140 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bitll.ISI. 

Day Creek dolomite, f'ragin. Colo. C;ollese Slud., vol. vi, pp. 3. 44. 1896. 

iVrmian. Kansiut. lndu(le<l in (^tmBrron >4Ti<t<. 
Day t'reck tiirmation, CruKin. Am. Ueol., vol, xix, pp. ;«(1-3(J2. 1897. 

Purmiaii, KaiiHaf. Ofelalioiiia. InoIuiltKl in Kiger division of Cimarron serieK. 
Dayton stone, Haymoad. Ind. Geoi. Surv., Ist Ann. Kept, 1869, p. 193. 1869. 

Indiana. 
Dayton alone, Orton. Ohio Geol. Sutv., Repl. of ProK-, 1869, pp. 143, 150, 157. 
1870. 
Oliio. 
Dayton stone, Newberry. Oliio Ueol. Surv., Reiit. of Prop., 1869, p. 15, 1870. 

Silurian. Ohio. 
Dayton stone, Orion. Ohio (ieol. Surv,, Rept. of I'roR., 1870, pp. 271, 301, 1871. 

Silurian. Ohio. InHuiliHl in Niagara HerieR. 
Dayton stone, Orton, Ohio tleol. Surv., vol. ii, ji. 668. 1874. 

Silurian. Ohio, Includeil in Niagara. 
Dayton limeBlone, Foerst*. Denieon Univ., Sci. Ijib., Bull., vol. i, p. 65, etc. 1SS5. 

Ohio. 
Dayton limestone, Ortoii, Ohio (ieol. Surv,, Prelim. Kept. Petroleum and Inflam- 
mable (ias, p. 21, 18K6. 
Ohio. Induded in Niagara serifs. 
Dayton limestone, Foerste. Denison Univ., Bri. I^b., Bull., vol. iii, p. 4. 1886. 

Ohio, 
Dayton limestone, Orton. Ohio (ieol, Surv., vol, vi, pi>, 4, 13. 1888. 

Upjier Silurian. Ohio. Included in Niajjara shale, 
Dayton limestone, Orton. Ohio (ieol. Sun'., vol, vii, pp. 4, 11. 1893. 

rp|>er Silurian. Ohio, In<:lude<l in Niagara shale. 
Dayton limestone, Foerste. Cin. Hoc. Nat. Hist., Jour., vol. xviii, nos. iii, iv, pp. itiS, 
190. 1896. 
Ixiwer Silurian. Ohio. 
Decker Ferry limestone, White, 2d Pa. (ieol. Surv., Rept, G», pp. 137-141. 1882. 

Silurian. Pennylvania. Included in Uppi'r Helderberg, no. vi. 
Decker Ferry limestone, Lesley. 2<l Pa, (ieol. Surv,, Final Rept., vol. ii, pp. 927-929. 
1892. 
Silurian. Pennsylvania. Indiideil in No. vi. 
Decker Ferry formation, VVeller. N.J. Geol. Surv., Rept. 1899, p. 7. 1900. 

Silurian. New Jersey. 
Beep Creek division, Ck>ins(o<'k. Texas (ieol. Surv., l^t Ann. Kept, pp. 303-305. 
1890. 

f, I. ...!... m ... ,.. [^,j] jjj j^ii Saba Beries. 

aw Geol. Surv,, Ist Ann. Rept,, pi, iii. 1890. 

Ie<l in San Saba sutries, 

Harris. U. S. Geol. Surv., Boll. No. 84, p. 287. 18.92. 

L'hide<l in Neocene. 

Soc. Am., Bull,, vol. v, p. 5115. 1894. 

sludeil in I»up Fork, Upper .Miocene, 

m. Phil. Soc., Trans., vol, sviii, pp, 65-63, 1895. 

S. Geol, Surv., !8th Ann, Rept., pt. it, p. 339. 1898. 
:act syn. Ticholcptua tels. 
■tt, Kan. Univ. Geol. Surv., vol. i, p. 117. 1896. 

i, pp.94, l(e. 1898. 



WEEKS] DAY CREEK DELTHYRI8. 141 

Deer Creek sandstone, Clark. Md. Geol. Surv., vol. ii, p. 213. 1898. 

Cambrian. Maryland. 
Deer Creek sandstone, Mathew. Md. Geol. Surv., vol. ii, p. 213. 1898. 

Cambrian. Maryland. 
Dekalb limestone. Bain. Am. Jour. Sci., 4th ser., vol. v, pp. 437, 439. 1^98. 
Carboniferous. Missouri. Included in Missourian series. Exact syn. Fusilina 
limestone. 
Dekalb limestone, Bain. Iowa Geol. Surv., vol. viii, pp. 277-278. 1898. 

Carboniferous. Iowa. Included in Bethany limestone. 
Delaware bluestone, Orton. Ohio Geol. Surv., vol. vi, p. 763. 1888. 

Ohio. Part. syns. Sandusky bluestone and Flinty courses at Columbiis. 
Delaware limestone, Newberry. Cin. Soc. Nat. Hist., Jour., vol. xii, Nos. ii, iii, 
p. 49. 1889. 
Devonian. Ohio. 
Delaware limestone, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., 
p. 25. 1890. 
Devonian. Ohio. Included in Upper Helderberg limestone. Exact syn. Upper 
Comiferous. 
Delaware flag, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Chemung, Upper Devonian. 
Delaware stage, Calvin. Iowa Geol. Surv., vol. v, pp. 49-50. 1896. 

Silurian. Iowa. Included in Niagara series. 
Delaware beds, Brownocker. Denison Univ., Sci. Lab., Bull., vol. ii. Art. ii, p. 20. 
1898. 
Devonian. Ohio. 
Delaware river flags. White. 2d Pa. Geol. Surv., Rept. G«, pp. 99-101. 1882. 
Devonian. Pennsylvania. Includes Paupack and New Milford sandstones. 
Delhi formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 66. 
1900. 
Carboniferous. California. Included in Calaveras formation. 
Dellville sandstone, Claypole. 2d Pa. Geol. Surv., Rept. F^ pp. 77-78. 1885. 

Devonian. Pennsylvania. Included in Catskill. 
Dellville green sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1558- 
1560. 1892. 
Devonian. Pennsylvania. Included in Chemung. 
Delphi black shale, Gorby. Ind. Dept. Geol. and Nat. Hist., 15th Ann. Rept., 
1886, p. 79. 1886. 
Devonian. Indiana. Exact syn. New Albany black shale? 
Del Rio clay, Hill and Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 42. 1898. 
Cretaceous. Texas. Included in Comanche series. 
Del Rio clays. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, pp. 
236-237. 1898. 
Cretaceous. Texas. Included in Washita division of Comanche series. Exact 
syn. Exogyra arietina clays. 
Del Rio clay, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Del Rio clay, Vaughan. U. S. Geol. Surv., Bull. No. 164, p. 17. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Delta sand, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 177. 1873. 

Pleistocene. Ohio. 
Delthyris shaly limestone. Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 
18, 144. 1843. 
Paleozoic. New York. Included in New York system. Includes CatskiU shaly 
limestone. 



142 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.19L 

Delthyris shaly limeHtone, Mather. Geol. of New York, pt. i, pp. 343-345. 1843. 

Paleozoic. New York. Included in IIelderl>erg division. Exact syn. Catskill 
shaly limeHtone. 
Delthyris shaly limestone, Emmons. Agric. of N. Y., vol. i, pp. 167-168. 1846. 

iSilurian. New York. Included in Helderl)erg division of New York system. 
Delthyris shaly limestone, Owen. Am. Jour. 8ci., 2d ser., vol. i, p. 50. 1846. 

Silurian. New York. Included in Catskill shaly limestone. 
Delthyris limestone, Shumard. Mo. Geol. Surv., 1st and 2d Ann. Repts., pt. ii, 
p. 153. 1855. 

Silurian. Missouri. Included in Up])er Silurian. 
Delthyris shaly limestone, Swallow. Mo. Geol. Surv., Ist and 2d Ann. Repts., 
p. 109. 1855. 

Silurian. Missouri. Included in Upper Silurian. 
Delthyris shale, Shumard. Mo. (Jeol. Surv., Repts., pt. ii, 1855-1871, pp. 261, 281. 
1873. 

Silurian. Missouri. Included in Upper Silurian. 
Denison beds. Hill. Texas Geol. Surv., Ist Ann. Rept, p. 130. 1890. 

Cretaceous. Texas. Included in Comanche series. 
Denison beds, Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 517. 1891. 

Cretaceous. Texas. Included in Washita division. 
Denison beds. Hill. Artesian Invest., Final Rept., pt. iii,p. 88, 52d Cong., Istsess., 
Ex. Doc. 41, pt. iii. 1892. 

Cretaceous. Southwest. Included in Washita division. 
Denison })eds, Hill. Science, vol. xxii, p. 23. 1893. 

Cretaceous. Texas. 
Denison marl, Taff. Texas Geol. Surv., 4th Ann. Rept., pp. 263-275. 1893. 

Cretaceous. Texas. Included in Washita, division of Lower Cretaceous. 
Denison beds, Hill. Geol. Soc. Am., Bull., vol. v, pp. 298, 327. 1894. 

Cretaceous. Indian Territory, Texas. Includes Pawpaw, North Denison, and 
Marietta. 
Denver formation. Cross. Colo. Sci. Soc, Proc, vol. iii., pp. 119-133. 1888. 

Tertiary. Colorado. 
Denver formation, Cross. Am. Jour. Sci., 3d ser., vol. xxxvii, pp. 261-282. 1889. 

Tertiary. Colorado. 
Denver formation, Cope. Science, vol. xiii, p. 29. 1889. 

Colorado. Included in Laramie. 
Denver, White. U. S. Geol. Surv., Bull. No. 82, p. 150. 1891. 

Cretaceous. Colora<k). 
Denver beds, Clark. U. S. Geol. Surv., Bull. No. 83, p. 136. 1891. 

Cretaceous. Colorado. 
Denver formation, Cross. Am. Jour. Sci., 3d ser., vol. xliv, p. 20. 1892. 

Tertiarv. Colorado. 
Denver formation, Cannon. (\)lo. Sci. Soc, Proc, vol. iv, p. 254. 1893. 

Cretaceous. Colorado. 
Denver, P^mmons, Cross, and P^ldridge. U. S. Geol. Surv., Mon., vol. xxvii, pp.33, 
155, 206. 1896. 

Tertiary. Colorado. Includes Animas River l>eds. 
Denver, Cross. U. S. (tcoI. Surv., Mon., vol. xxvii, p. 206. 1896. 

Tertiary. Colora<lo. Included in Upper part of Cretaceous. 
Denver formation, Davis. Am. Acad. Arts and Sci., Proc, vol, xxxv, p. 356. 1900. 

Tertiary. Colorado. 
Des Moines beds, Keyes. Iowa (Jeol. Surv., vol. i, pp. 86-114. 1893. 

Carboniferous. Iowa. Included in Pennsylvania series. Exact syn. Lower Coal 
Measures. 



WEEKS.] DELTHYBI8 — BIABLO-DAVIS. 143 

Des Moines, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 82. 1894. 

Carboniferous. Missouri. Exact syn. Lower Coal Measures of Missouri. 
Des Moines formation, Keyes. Iowa Geol. Surv., vol. ii, pp. 126-137, 143-154. 1894. 
Carboniferous. Iowa. Included in Pennsylvania series. Exact syn. Lower Coal 
Measures. 
Des Moines stage, Gordon. Iowa Geol. Surv., vol. iv, pp. 222-230. 1895. 

Carboniferous. Iowa. Exact syn. Lower Coal Measures. 
Des Moines stage, Bain. Iowa Geol. Surv., vol. iv, pp. 283-287, 336-342. 1895. 

Carboniferous. Iowa. Included in Upper Carboniferous. 
Des Moines, Calvin. Iowa Geol. Surv., vol. v, pp. 60-61. 1896. 

Carboniferous. Iowa. 
Des Moines stage, Beyer. Iowa Geol. Surv., vol. v, pp. 199-201. 1896. 

Carboniferous. Iowa. 
Des Moines, Bain. Iowa Geol. Surv., vol. v, pp. 151-152, 377-398. 1896. 

Carboniferous. Iowa. Includes Appanoose beds, Chariton conglomerate. 
Des Moines stage, Beyer. Iowa Geol. Surv., vol. vii, pp. 227-229. 1897. 

Carboniferous. Iowa. 
Des Moines stage, Calvin. Iowa Geol. Surv., vol. vii, pp. 79-83. 1897. 

Carboniferous. Iowa. 
Des Moines, Bain. Iowa Geol. Surv., vol. vii, pp. 292-335, 428-446. 1897. 

Carboniferous. Iowa. 
Des Moines formation, Tilton and Bain. Iowa Geol. Surv., vol. vii, pp. 504-509. 
1897. 
Carboniferous. Iowa. 
Des Moines, Leonard. Iowa Geol. Surv., vol. viii, pp. 78-82. 1898. 

Carboniferous. Iowa. 
Des Moines, Bain and Leonard. Jour, of Geol., vol. vi, pp. 577-588. 1898. 

Carboniferous. Mississippi Valley. 
Des Moines stage, Haworth. Kan. Univ. Geol. Surv., vol. iii, p. 88. 1898. 

Carboniferous. Kansas. 
Des Moines series, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, pp. 30-70, 121-159, 162- 
242, 267, 327-331. 1898. 
Upper Carboniferous. Missouri. Includes Pleasonton shale, Henrietta limestone, 
and Cherokee shales. 
Des Moines series, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 123. 1898. 
Upper Carboniferous. . Missouri. Included in Cherokee stage. Graydon sand- 
stone. 
Des Moines, Macbride. Iowa Geol. Surv., vol. ix, p. 133. 1899. 

Carboniferous. Iowa. 
Des Moines, Bain. Iowa Geol. Surv., vol. ix, p. 68. 1899. 

Carboniferous. Iowa. 
Des Moines stage, Beyer. Iowa Geol. Surv., vol. ix, p. 190. 1899. 

Carboniferous. Iowa. Included in Pennsylvanian series. 
Des Moines, Udden. Iowa Geol. Surv., vol. ix, p. 303. 1899. 

Carboniferous. Iowa. 
Des Moines, Beyer. Iowa Geol. Surv., vol. x, p. 271. 1900. 

Carboniferous. Iowa. Included in Pennsylvania series. 
De Soto beds, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Pliocene. Included in Floridian group. Part. syn. Floridian group. 
De Soto beds, Dall. U. S. Geol. Surv., 18th Ann. Kept., pt. ii, p. 337. 1898. 

Tertiary. Florida. Included in Pliocene. 
Dexter sand, Taff. Texas Geol. Surv., 4th Ann. Kept., pp. 285-298. 1893. 

Cretaceous. Texas. Included in Dakota formation. Upper Cretaceous. 
Biablo-Davis series. Hill. Geol. Soc. Am., Bull., vol. iii, p. 97. 1892. 
Tertiary. Texas, New Mexico. 



144 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (bill I9i. 

Diamond Peak tiimrlzitc, Hague. U. S. Geol, Hun., 3d Ann. Rept., pp. 253, 268. 
1883. 

CarlKjnifemuB. Nevada. 
DianiDiK) IVak iiiiartxitt', Hague. U. 8. tieol. Surv., Mon., vol. xx, p. 85. 1892. 

Carbon itcri Ills. Nevada, 
Digrhtan. (troiiji, Shalcr, Wocxlworth, anil Foerste. U. 8. Geol. Surv., Mon., vol. 
Kxxiii, p. 184. l8fW. 

Carboniferous. Rhode Iwland, Induiled in Coal Meaeures. 
DincwaBr sands, White. Phil. Acad. Nat. Sci., Proc., 1887, p. 40. 1887. 

Texas. Includal in CreUi'eoiw, Comani'be. 
Dismal forinalioii, Uanipbell. U. K Ueol. Surv., Geol. Atlas of U. S., Folio No. 44. 
18H7. 

Carboniferous \ irgmia ft est Virginia. Part. syns. No. xii. Great conglomerate. 
Dockum lied- Hill Ttxas ( eol. Surv., Ist Ann, Bept, p. 189. 1890, 

Juratria8(?) Tetaa 
Dockmn, Dunible TiiaH ( ti 1. Surv., 1st Ann. Kept., pi. iii, p. xxi. 1890. 

Juratrias. Texas 
Dockum beds Cummma Texas Geol. Surv., 2d Ann, Kept,, pp. 424-429. 1891. 

Juratrias. Tttaa Included in Trias, Ksact syn. Sbinanimp beds. 
Dockum l>eda Draki Texas Geol. Sur., M Ann. Rept,, pp. 229-247. 1892. 

Juratrias. Texas Intlu led in Triaasic, 
Dockum l>edsof Duinble Simpson. Proc, U. S. NaL Mus., vol. sviii, p. 381. 1895, 

Triassic. Texas 
DoeRunlimextine Frazer 2d Pa. Geol, Surv,, Rept, C, pp. 70,304, 307. 1883, 

Sirlurian. linncyUanu Induded in ^iluro-Cambrian. 
Dog Creek shales Craj,in Colo. College Slud., vol. vi, pp. 3, 39. 1896. 

Permian. Kan aw Induded in Cimarron series. 
Dog Creek shales I'rosser Kan, Univ. Geol. Barv., vol. ii, pp. 94-95. 1897, 

Lower Crel u'eous Kansas, Oklahoma. Induded in Cimarron series. 
Dog Creek formation, Cnigin. Am. (ieol,, vol. 19. p, 358. 1897. 

Permian. Kansas, Oklahoma, Induded in Salt Fork division of Cimarron series. 
Includes Chapman dolomite and Anipitheater dolomite. Exact syn. Stony 
Hills formation. 
Dolores formation. Cross. U, S. Geol. Surv, Geol, .\tlaa of U. S., Folio No. 57. 
1899. 

Juratrias, Colorado, 
Dolores formatiou, Cross and S])oncer. U. S. Geol, Surv,, 21st Ann. Rept., pt, ii. 



ick. Boston Soc. Nat. Hist,, Proc,, vol. vii, 1859-61, 

pper Silurian or Devonian, 

It. Elementary Geology, p. 411. New ed. 1863, 

ill. U, S. Geol, Surv,, Geol. Atlas of U. S., Folio No. 44. 

and West Virginia. Part. syn. No. xii. Great Conglom- 

e. Texas Geol.Surv.,lst Ann, Rept.,pl, iti,p,lxx. 1890. 

nmins. Texas Geol. Surv., 1st Ann. Rept, pp. 188-189, 

exas, loeluded in Permian. 



WEEKS] DIAMOND PEAK DUNKARD CREEK. 145 

Double Mountain beds, Cummins. Texas Geol. Surv., 2d Ann. Rept., p. 402. 1891. 

Carboniferous. Texas. Included in Permian. 
Double Mountain division, Cummins. Texas Geol. Surv., 4th Ann. Rept., pp. 228-232. 
1893. 
Carboniferous. Texas. Included in Permian. 
I>oiig^la8 formation, Haworth. Kan. Univ. (ieol. Surv., vol. iii, pp. 93,94. 1898. 
Carboniferous. Kansas. Included in Upi)er Coal Measures. Includes Oread 
limestone and Lawrence shale. 
I>oizty gravels, Willis. Geol. Soc. Am., Bull., vol. ix, p. 157. 1898. 

Pleistocene. Washington. Included in Vashon epoch. 
I>over limestone, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 31. 1898. 

Carboniferous. Kansas. 
Dover shale and sandstone, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 31. 1898. 

Carboniferous. Kansas. 
I>0'wxi8 limestone, Cragin. Colo. College Stud., vol. vi, p. 50. 1896. 

Cretaceous. Kansas. Included in Russell formation. P^xact syn. Fence-post 
limestone. 
I>re8bacli sandrock, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., 
vol. ii, p. xxii. 1888. 
Minnesota. Included in St. Croix. 
Dresbach sandstone, Hall. Minn. Acad. Nat. Sci., Bull., vol. iii, no. i, p. 134. 1889. 

Cambrian. Minnesota. Included in St. Croix. 
Dresbach sandstone, Keyes. Iowa Cieol. Surv., vol. i, p. 23. 1893. 

Cambrian. Iowa. Included in >St. Croix sandstone. 
Dresbach sandstone, Hall and Sardeson. Geol. Soc. Am., Bull., vol. vi, p. 170. 1895. 

Middle Cambrian. Minnesota. 
Dry Bone limestone, Prosser. Geol. Soc. Am., Bull., vol. vi, pp. 29, 36. 1894. 

Permo-Carboniferous. Kansas. 
Dry Creek shale, Peale. U. S. Geol. Surv., Bull., No. 110, p. 24. 1893. 

Cambrian. Montana. Included in Gallatin. 
Dry Creek shale, Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 286. 1900. 

Cambrian. Montana. 
Duck Creek chalk, Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 516. 1891. 

Cretaceous. Texas. Included in Washita division. 
Duck Creek chalk, Hill. Geol. Soc. Am., Bull., vol. v, pp. 298, 325. 1894. 

Cretaceous. Texas. Included in Preston beds. 
Dim limestone. Hay. Kan. Acad. Sci., Trans., vol. x, p. 7. 1887. 

Carboniferous. Kansas. Exact syn. Humboldt limestone. 
Diuidee limestone, Lane. Mich. Geol. Surv., Rept. State Board for 1891-92, p. 66. 
1893. 
Devonian. Michigan. 
Dundee limestone, Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 25. 1895. 

Devonian. Michigan. 
Dundee limestone, Sherzer. Geol. Soc. Am., Bull., vol. ix, p. 11. 1897. 

Silurian. Ohio. 
Dundee limestone, Lane. U. S. Geol. Surv., Water-Supply papers, No. 30, pi. vi. 
1899. 
Devonian. Michigan. Exact syn. Upper Helderberg. 
Dundee limestone, Sherzer. Mich. (ieol. Surv., vol. vii, pt. i, pp. 35-42, 226-228. 
1900. 
Devonian. Michigan. 
Diinkard Creek series. White. U. S. Geol. Surv., Bull., No. 65, p. 20. 1891. 
Carboniferous. Ohio, Pennsylvania, and West Virginia. Included in Permo- 

Bull. 191—02 10 



146 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Carboniferous. Includes Windy (lap limestone, (tilmore sandstone, Nineveh 
sandstone and limestone, Fish Creek sandstone, and Jolly town limestone, 
Upi>er, Middle, and Lower Washington limestone, Mariett asandstone, Black- 
ville limestone, Washington sandstone, Colvins Run limestone, Mount Morris 
limestone, Waynesburg sandstone, and Cassville plant shale. 
Dunkard Creek, White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Permian. West Virginia. 
Dunkard formation, O'Harra. Md. Geol. Surv., Allegany County, p. 128. 1900. 

Permian. Maryland. 
Dunlap limestone. Kirk. Kan. Univ. Geol. Surv., vol. i, pp. 81, 83. 1896. 

Carboniferous. Kansas. 
Doinveg'an sandstone, Dawson. Am. Jour. Sci., 3d ser., vol. xxi, p. 392. 1881. 

Cretaceous. Canada. Exact syn. Niobrara. 
Dunvegan group, Dawson. Can. Geol. Surv., Rept. 1879-80, pp. 116B-122B. 1881. 
Cretaceous. British Columbia, Canada. Included in Cretaceous, Colorado group. 
Includes Dunvegan sandstones. Exact syns. Lower sandstones and shales. 
Part. syns. Belly River series. Bear River formation, Niobrara. 
Dunvegan group, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 50D, 
54D-55D. 1893. 
Cretaceous. Canada. Part. syn. Belly River series. Bear River beds (Wyoming). 
Duplin beds, Dall. U. S. Nat. Mus., Proc, vol. xviii, p. 40. 1895. 

Tertiary. North Carolina. 
Duplin beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 338. 1898. 

Tertiary. North Carolina. 
Dyestone and gray limestone group, Safford. Geol. Reconn. of the State of Tenn., 
1st Rept., pp. 156-158. 1856. 
Devonian and Silurian. Tennessee. Included in Upper Silurian and Devonian. 
Includes Sneedville limestone and Clinch Mountain limestone. 
Dyestone group, Safford. Geol. of Tenn., pp. 302-311. 1869. 
Silurian. Tennessee. Included in Niagara group. Part. syn. Clinton. [Medina 
in part (?).] 
Dyestone group, Killebrew and Safford. Resources of Tenn., p. 38. 1874. 

Silurian. Tennessee. Included in Niagara period. 
Eagle limestone, White. U. S. Geol. Surv., Bull. No. 65, p. 177. 1891. 
Carboniferous. West Virginia. Included in Lower Coal Measures, Allegheny 
River series. 
Eagle formation. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 55. 
1899. 
Cretaceous. Montana. 
Eagle Ford shale. Hill. Am. Jour. Sci., 3d ser., vol. xxxiii, p. 298. 1887. 

Cretaceous. Texas. Included in Gulf series. 
Eagle Ford shales, White. Phil. Acad. Nat. Sci., Proc, 1887, p. 40. 1887. 
Texas. Included in Cretaceous. Gulf series. Exact syns. Tombigbee sand. 
Lower part of Colorado group. 
Eagle Ford shales, Dumble. Texas Geol. Surv., 1st Ann. Rept., i)l. iii, p. xlvii. 
1890. 
Cretaceous. Texas. Included in Black Prairie series. 
Eagle Ford shale, Hill. Texas Geol. Surv., 1st Ann. Rept., pp. 111-112. 1890. 

Cretaceous. Texas. Included in Black Prairie series. 
Eagle Ford formation. White. U. S. Geol. Surv., Bull. No. 82, p. 122. 1891. 

Cretaceous. Texas. 
Eagle Ford division, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 734-735. 1891. 
Cretaceous. Texas. Included in Upper Cretaceous. Exact syn. Benton shale. 



1 DrXKARD CREEK EAn>N. 147 

Eagle Ford shale, Taff. Texas Geol. Sorv., 3d Ann. Kept., p, 35a 1892. 

Cretaceoos. Texas. Incloded in Tpper Cretaceous. 
Eagle Ford shake. Hill. Artesian Invest., Final Rept., pt. iii, p. 70, 52*1 Cong., 
Ist eess., Ex. Dot-. 41. 1892. 

Cretaceous. Southwest. Exact s>'n. Benton i-lay. 
Eagle Ford formation, Taff. Texas Geol. 8ur\\, 4th Ann. Kept., pp. 2W-3t>4. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Eagle Ford shale, HilL GeoL Soc. Am., Bull., vol. v, pp. 297, 305. 1894. 

Cretaceous. Texas. 
Eagle Ford stage, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 377. 1895. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Eagle Ford shales, Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Kept, pt ii, 
p. 239. 1898. 

Cretaceous. Texas. Includeil in Colonwlo division of (i ulf wries. 
Eagle Ford formation, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 

Cretaceous. Texas. Included in Gulf series. 
Eagle Ford formation, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 18. 1900. 

Cretaceous. Texas. 
Eagle Pass beds, White. U. S. Geol. Surv., Bull. No. 82, p. 117. 1891. 

Cretaceous. Texas. Exact syn. Ripley formation. 
Eagle Pass division, Dumble. Geol. Soc Am., Bull., vol. iii, pp. 219, 224. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. Includes Upson days, San 
Miguel, Coal series, Escondido beds. 
Eagle Pass, Hill. Geol. Soc. Am., Bull., vol. iii, p. 94. 1892. 

Cretaceous. Texas. 
Eagle Pass formation, Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept, pt. ii, 
p. 241. 1898. 

Cretaceous. Texas. Included in Montana division of Gulf series. 
Eagle Pass formation, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 21. 1900. 

Cretaceous. Texas. Includes San Miguel beds, Escondido beds. 
Earlham limestone, Tilton and Bain. Iowa Geol. Surv., vol. vii, pp. 511-517. 1897. 

Carboniferous. Iowa. Included in Bethany limestone. 
Earlham limestone. Bain. Am. Jour. Sci., 4th ser., vol. v, pp. 435, 436, 439. 1898. 

Carboniferous. Missouri. Included in Bethany limestone. 
Earlton limestone, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 51, 103. 1898. 

Carboniferous. Kansas. Included near summit of Thayer shale. 
East Lee gneiss, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 

Algonkian. Massachusetts. Part. syn. Stamford gneiss. 
East Lee limestone, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 50. 1899. 

Pre-Cambrian. Massachusetts. 
Eastern sandstone, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, p. 110. 1878. 

Algonkian. Michigan. 
Eastern sandstone, Irving and Chamberlin. U. S. Geol. Surv., Bull. No. 23. p. 106. 
1885. 

Cambrian. Michigan. Exact syn. Potsdam. 
Eastern sandstone, James. Gin. Soc. Nat. Hist., Jour., vol. xvii, No. ii, p. 127. 
1894. 

Ordovician. 
Eastern sandstone, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, pp. 110-125. 1898. 

Michigan. 
Eaton beds, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 8. 1888. 

Ohio. 



148 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Eau Claire grit, Wooster. Geol. of Wisconsin, vol. iv, p. 110. 1882^ 

Cambrian. Wisconsin. Included in Potedam sandstone. 
Eephora bed, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 124. 1892. 

Tertiary. Florida. Included in Miocene. 
Edison gneiss, Wolff and Brooks. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 439. 
1898. 

Pre-Cambrian. New Jersey. 
Edmonton series, Tyrrell. Can. Geol. Surv., new ser., vol. ii, pp. 74E-75E, llOE, 
118E, 127E, 131E-135E, 137E-138E, 1887. 

Canada. Included in Laramie. 
Edwards limestone. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
pp. 227-235. 1898. 

Cretaceous. Texas. Included in Fredericksburg division of Comanche series. 
Exact syn. Caprina limestone, Barton Creek limestone. 
Edwards formation. Hill and Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 42. 1898. 

Cretaceous. Texas. Included in Comanche series. 
Edwards limestone, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 

Cretaceous. Texas. Included in Comanche series. 
Egrremont limestone, Hobbs. Jour, of Geol., vol. i, pp. 727-728. 1893. 

Ordovician. Massachusetts. Included in Mount Washington series. 
£instine sandstone. Swallow and Hawn, Geol. of Miami County, Kans. 1865. 

Carboniferous. Kansas. Included in Coal Measures. 
Elevator B sandstone. Hall. Minn. Acad. Nat. Sci., Bull., vol. ii, no. i, p. 132. 1889. 

Cambrian. Minnesota. Included in Shakopee. 
Elevator sandstone, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 341. 1892. 

Ordovician (?). Minnesota. Included in Magnesian series. 
Elgrin sandstone, Haworth. Kan. Univ. Geol. Surv., vol. iii, p. 64. 1898. 

Carboniferous. Kansas. 
Elk group, Carll. 2d Pa. Geol. Surv., Rept. I*, pp. 78-79. 1890. 

Devonian. Pennsylvania. 
Elk Creek beds, Cragin. Am. Geol., vol. xvi, p. 366. 1895. 

Cretaceous. Kansas. Includes Lanphier beds, Stokes sandstone. 
Elk Falls limestone, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 65-66, 105. 
1898. 

Carboniferous. Kansas. Includes Lecompton and Deer Creek limestone. 
Elkgrarden, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 
1896. 

Carboniferous. West Virginia and Maryland. 
Elkgarden formation, Clark. Md. Geol. Surv., vol. i, p. 156, 187. 1897. 

Carboniferous. Maryland. 
Elk Lick limestone. White. 2d Pa. Geol. Surv., Rept. Q, p. 29. 1878. 

Carboniferous. Pennsylvania. Included in Lower Barren series. 
Elk Lick limestone. White. U. S. Geol. Surv. Bull. No. 65, p. 90. 1891. 

Carboniferous. Pennsylvania. Included in Barren Measures, Elk River series. 
Elk Lick Coal, White. U. S. Geol. Surv., Bull. No. 65, p. 89. 1891. 

Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Barren Measures, 
Elk River series. 
Elk Mountain shale. White. 2d Pa. Geol. Surv., Rept. G^ p. 64. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Elk Mountain gray shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1579. 
1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 



WEEKS.] DUNKARD CREEK EATON. 147 

Eagle Ford shale, Taff. Texas Geol. Surv., 3d Ann. Kept., p. 350. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Eagle Ford shales, Hill. Artesian Invest, Final Kept., pt. iii, p. 70, 52d Cong., 
1st sess., Ex. Doc. 41. 1892. 
Cretaceous. Southwest. Exact syn. Benton day. 
Eagle Ford formation, Taff. Texas Geol. Surv., 4th Ann. Rept, pp. 299-304. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Eagle Ford shale. Hill. Geol. Soc. Am., Bull., vol. v, pp. 297, 305. 1894. 

Cretaceous. Texas. 
Eagle Ford stage, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 377. 1895. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Eagle Ford shales. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
p. 239. 1898. 
Cretaceous. Texas. Included in Colorado division of Gulf series. 
Eagle Ford formation, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 
Cretaceous. Texas. Included in Gulf series. 
Eagle Ford formation, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 18. 1900. 

Cretaceous. Texas. 
Eagle Pass beds. White. U. S. Geol. Surv., Bull. No. 82, p. 117. 1891. 

Cretaceous. Texas. Exact syn. Ripley formation. 
Eagle Pass division, Dumble. Geol. Soc. Am., Bull., vol. iii, pp. 219, 224. 1892. 
Cretaceous. Texas. Included in Upper Cretaceous. Includes Upson clays, San 
Miguel, Coal series, Escondido beds. 
Eagle Pass, Hill. Geol. Soc. Am., Bull., vol. iii, p. 94. 1892. 

Cretaceous. Texas. 
Eagle Pass formation, Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
p. 241. 1898. 
Cretaceous. Texas. Included in Montana division of Gulf series. 
Eagle Pass formation, Vailghan. U. S. Geol. Surv., Bull., No. 164, p. 21. 1900. 

Cretaceous. Texas. Includes San Miguel beds, P^condido beds. 
Earlham limestone, Tilton and Bain. Iowa Geol. Surv., vol. vii, pp. 511-517. 1897. 

Carboniferous. Iowa. Included in Bethany limestone. 
Earlham limestone. Bain. Am. Jour. Sci., 4th ser., vol. v, pp. 435, 436, 439. 1898. 

Carboniferous. Missouri. Included in Bethany limestone. 
Earlton limestone, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 51, 103. 1898. 

Carboniferous. Kansas. Included near summit of Thayer shale. 
East liOe gneiss, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Algonkian. Massachusetts. Part. syn. Stamford gneiss. 
East Lee limestone, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 50. 1899. 

Pre-Cambrian. Massa(;husetts. 
Eastern sandstone, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, p. 110. 1878. 

Algonkian. Michigan. 
Eastern sandstone, Irving and Chamberlin. U. S. Geol. Surv., Bull. No. 23. p. 106. 
1885. 
Cambrian. Michigan. Exact syn. Potsdam. 
Eastern sandstone, James. Cin. Soc. Nat. Hist., Jour., vol. xvii. No. ii, p. 127. 
1894. 
Ordovician. 
Eastern sandstone, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, pp. 110-125. 1898. 

Michigan. 
Eaton beds, Foerste. Denison Univ. Sci. Lab., Bull., vol. iii, p. 8. 1888. 
Ohio. 



148 NORTH AMERICAN OEOLOOIO FORMATION NAMES. [B<TLL.in. 

Bau OUire (frit, Woo«t«r. (ieol. of Wisconsin, vol. iv, p. 110. 1882, 

Cambrian. Wisconsin. Included in Potsdam sandstone. 
Ecphora bed, Dall and llama. U. H. Geol. Burv., Boll. No. 84, p. 124. 1892. 

Tertiary. Florida. Included in Mio<'ene. 
EdiMm gneies, Wolff and Brooks. U. H. Geol. Surv., ISth Ann. Bept.,pt.ii,p.439. 
I8»8. 

Pre-Canibrian. New Jursey. 
Edmonton serief, Tyrrell. Can. Geol. Surv., new ser., vol. ii, pp. 74E-75E, IIOE, 
118E, 127K, ISIPMSSE, I37E-138K, 1887. 

Canada. Incltided in I.araoiie. 
Edwards limistone, Hill and Vanghan. IJ. S. Geol. Surv., ISth Ann. RepL, pt ii, 
pp. 227-235. 18»8. 

CretaireoiiB. Texas. Included in Fredericksburg division of Comanche series. 
Exact syn. Caprina limextone, Barton Creek limestone. 
Edwards formation, Hill and Vaughan. U. K. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 42. 1898. 

Cretaceous. Texas. Included in Comanche series. 
Edwards limeftone, Vai^han. U, S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 61. 
1900. 

Cretaceous. Texas. Included in Comanche series. 
E^emont limestone, Hobbe. Jour, of (ieol., vol. I, pp. 727-728. 1893. 

Ordovician. Massachusetts. Included in Mount Washington eeriee, 
Einetiiie sandstone, Kwallow and Hawn. Geol. of Miami County, Kans. 1S65, 

Carlnniferous. Kansas, Include<l in Coai Measures. 
Elevator B sandstone. Hall. Minn. Acad. Nat. Sci., Bull., vol. ii, no. i, p. 132. I8SS. 

Cambrian. Minnesota. Include<1 in Shakopee. 
Elevator sanilstone. Hall and t^rdeson. Geol, Soc. Am., Bull., vol. iii, p. 341. 1892. 

Ordovician (7). Minnesota. Included in Magnesian series. 
Elgin sandstone, Haworth. Kan. Univ. Geol. Surv., vol. ill, p. 64. ISS8. 

Carboniferous. Kansas. 
Elk group, Carll. 2d Pa. Geol. Hurv., Rept. P, pp. 78-79. 1890. 

Devonian. Pennsylvania. 
Elk Creek l)eds, Cragin. Am. (Jeol., vol. ivi, p. 366. 1893. 

Cretaceous. Kansas. Includes Lanphier beds, Stokes sandstone. 
Elk Falls limestone, Haworth. Kan. L'niv. Geol. Surv., vol. iii, pp. 65-6C, 105. 

uiles Leconipton and Deer Creek limestone. 

U. S. Geol. Surv., Geol. Atlas of U. 8., Folio So, 2S. 

. and Maryland. 

d. Geol. 8urv., vol. i, p. 156,187. 1897. 

1 Pa. Geol. Surv., Rept. Q, p. 29. 1878. 

In<'lude<l in Lower Barren series. 
8. tieol. Surv. Bull. No. 65. p. 90. 1891. 

Included in Barren Measures, Elk River series. 
3ol. Surv., Bull. No. 65, p. 89. 1891. 
I'ania, West Virginia. Included in Barren Measoree, 



■. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1678. 
icluded in Catskill, No. is. 



w^BKs.] EAU CLAIRE ENCRINAL. 149 

Elk Mountain sandstone and shale, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 
1894. 
Devonian. New York, Pennsylvania. Included in Catskill (Upper Devonian). 
Elk Biver series, White. U. S. Geol. Surv., Bull. No. 65, p. 70. 1891. 

Carboniferous. Ohio, Pennsylvania, and West Virginia. Includes Pittsburg lime- 
stone, Connellsville sandstone, Clarksburg limestone, Morgantown sandstone, 
Elk Lick limestone, Crinoidal, Green fossiliferous or Ames limestone, Red 
Shale beds, Cambridge limestone, Irondale limestone, Mahoning sandstone 
and limestone, and Kanawha black flint. Exact syn. Barren Measures. 
Elk River series. White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 
Upper Carboniferous. West Virginia. Exact syn. Barren Measures. 
Elk River series. White. West Virginia Geol. Surv., vol. i, p. 201. 1899. 

Carboniferous. West Virginia. Exact syn. Barren Measures. 
llUensburg sandstone, Russell. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 127- 
128. 1900. 
Tertiary. Washington. Included in Miocene. 
EUicottsville conglomerate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1531. 
1892. 
Devonian. Pennsylvania. Included in Venango. 
Elliott Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 376. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Ellis limestone, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 1. 1894. 
Juratrias. Montana. 
Ellis, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 1896. 

Juratrias. Wyoming. 
Ellis, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Juratrias. Montana. 
Ellis formation. Weed. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 477-478. 1898. 

Juratrias. Montana^ 
EUis formation. Weed. U. 8. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 55, 56. 
1899. 
Juratrias. Montana. 
Ellis formation, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, pp. 
149-164. 1899. 
Juratrias. Yellowstone Park. 
Elm Creek bed, Drake. Texas. Geol. Surv., 4th Ann. Rept., p. 424. 1893. 

Carboniferous. Texas. Included in Albany division. 
Elmont limestone, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 30. 1898. 

Carboniferous. Kansas. 
Empire beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 308. 1898. 
Tertiary. Or^on. Included in Miocene. Exact syn. Astoria sandstones. 
Empire formation, Diller. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 319. 1899. 

Tertiary. Oregon. Included in Miocene. 
Empire shale, Walcott. Geol. Soc. Am., Bull., vol. x, pp. 199, 207. 1899. 

Algonkian, Pre-Cambrian. Montana. Included in Belt terrane. 
Emporia limestone, Kirk. Kan. Univ. Geol. Surv., vol. i, p. 80. 1896. 

Carboniferous. Kansas. 
Encrinal limestone. Hall. N. Y. Geol. Surv., 3d Ann. Rept., p. 298. 1839. 

Devonian. New York. 
Encrinal limestone. Hall. Geol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 187. 
1843. 
Paleozoic. New York. Included in Hamilton group. 



150 WORTH AMERICAN GEOLOGIC FORMATION NAME3. (Bri.L,lSL 

Em-rinal liiueHtone, Hall. Geol. of Nfw York, pt iv, 4th Geol. Siirv., pp. 18. US. 
IH4;l. 
I'aleoi'.oic. New York. Iiicludcil in New Yurk system. Inctudee Scutella liine- 
^<tODl>■ 1*811, syn. No. (i, l'(>iiiipylvania survey. 
Encrinal HniuHtoiip, Emmons. Af^culturc of New York, vol. i, p. 16S. 1S46. 

New York. Included in HelderlierK division of New York system. 
Flncrinal limestone, Hopkins. Ark. (ieol. Sun-., 1890, vol. iv, p. 52. 1890. 

8iliiria:i. Arkaiisaw. ln<'l[«li^l in Ix)WfT Helderbeiy. 
p^ncrinal iimpstone, (Jralmu. Buffalo Ktm'. Nat. Hist., Bull., vol. vi, pp.30-32. 1896. 

Devonian. New York. 
Bmcrinital limestone, Shiimard. Mo. (ieol. Surv., let and 2d Ann. Eepto.,ptii, 
pp. 171, 181, 1855. 
CarboniferoiiH. Miwoiiri. 
Enmnital limestone, Swallow. Mo. Geol. Surv., lat and 2d Ann. Repts., pp. 97, 
175, 1S4. 18.55. 
Carbon if eroUH. Misi<ouri. Iiii^liided in Mountain or Lower Carboniferous lime- 
slone. 
Enrrinital limestone. Meek. Mo. Geol. Surv,, 1st and 2d Ann. Repts., pt. ii, p. 
1855. 
Carlioniferoiis. Missouri. 
Enmnilalliniebtone.Shunianl. Mo.(;eol.Surv.,Repts., 1855-1871, pp. 294,305. 1 

CarlioniferouB. Missouri. Inelnded in Lower Carboniferous. 
Encrinital limestone, Eroailhead, Mo. Geol. Surv., Rept, 1855-1871, pp. 43, 
1873. 
Carboniferous. Missouri. Included in I>ower Carboniferous. Exact syn. Bur- 
linjEtun limestone. 
Encrinital limestone, Meek. Mo. Geol. Suri'., Repte., 1855-1871, pp. 140, 173. 1 

Carboniferous. Missouri. Included in Lo«er Carlsiniferous. 
Encrinital limestone, Broadlieail. Mo. Gei)l. Surv., Repts., 1873-74, pp. 25, 67, 
1874. 

Carboniferous. Missouri. Included in I..i»wer Carboniferous, Mountain limeetose. 
Exact syn. Burlington. 
Encrinital limestone, Broa-lhead. Mo. Geol. Surv., Repts., ia7.'J-74, pp. 25, 87. 

Lower Carlwniferons Miswmri. Exact wyn. Burlington limestone. 
Englisli Biver gritstones. Bain. Am. Geol, vol. xv, p. 322. 1805. 

Carboniferous. Iowa. Includeil in Mississippian series, Kinderhook. 
English Biver griti-tunes. Bain. Iowa Geol. Surv., vol. v, p. 134. 1896. 

Carboniferous. Iowa. Included in Kinderhook. 
Eolifui limestone, Hitchcock. Geol. of Vermont, vol. i, pp. 396-419. 1861. 

Cambrian. Vermont. Exact syns. Granular limestone, Berkshire limestone, 

Slockbrtdffe limestone, Dorset limestone. 

Eolian limestone, Hitchcock, tieol. of Vermont, vol. i, pp. 394-395, 419-424. 1861. 

Cambrian. Vermont. Exact syns. Berkshire limestone, Stockbridge limeBlone. 

i. Geol. of Maine, Prelim. Rept., vol. ii, pp. 245-K9. 

t syn. Stockbridge limestone. 

tept. on Geol. Map of Mass., p. 40. 1876. 

1. Jour. Sci., 3d ser., vol. xiii, p. 414. 1877. 

, syns. Lower Calciterous, Quebec, Chazy, Black Kiveri 

Geol. Soc. Am., Bull., vol. i, p. 513. 1889. 



Am., Bull., vol. ii, p. 502. 1891. 
Included in Quebec group. 



WBKKs.] ENCRINAL ERIE. 151 

£o-I^^nitic, Heilprin. Phil. Acad. Nat. Sci., Proc., 1882, p. 184. 1882. 

Included in Eocene. 
Eo-Lignitic, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, p. 116. 1884. 

Included in Tertiary-Eocene. Exact eyns. Marlborough and Piscataway beds of 
Maryland(?) . Shark River deposits of New Jersey. 
£qiiiis beds, Cope. U. S. Geol. and (leog. Surv. of Terr., Mon., vol. iii, pp. 19-20. 
1881. 
Tertiary. Included in Pliocene. 
Eqiius beds, Dumble. Jour, of Geol., vol. ii, pp. 563-564. 1894. 

Pleistocene. Texas. 
Equus beds, Scott. Geol. Soc. Am., Bull., vol. v, p. 594. 1894. 

Pleistocene. Nebraska. 
Equus beds, Dall. U. S. Geol. Surv., 18th Ann. Rept, pt. ii, p. 336. 1898. 

Pleistocene. 
Brian, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Devonian. New York. Includes MarceUus shale, Hamilton beds. 
£rie division, Vanuxem. Geol. of New York, pt. iii, pp. 170-171. 1842. 

Paleozoic. New York. Included in New York system. 
Erie division, Mather. Geol. of New York, pt. i, pp. 317-323. 1843. 

Paleozoic. New York. Included in New York system. Includes Ithaca and Che- 
mung group, Hamilton group, Marcellus shales, 3d graywacke, No. viii, Olive 
shale, Skaneateles shale, Ludlowville shale, Encrinal limestone, Moscow shale, 
Apulia and Sherburne shales, Cazenovia group. 
Erie, Emmons. Agriculture of New York, vol. i, pp. 180-186. 1846. 

Devonian. New York. Included in New York system. Includes Marcellus, 
Hamilton. 
Erie clay, Logan. Can. Geol. Surv., Repts., 1843-1863, pp. 887, 896-907. 1863. 

Canada. Included in Drift (upper stratified portion). 
Erie clays, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 26. 1870. 

Carboniferous. Ohio. 
Erie shale, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 20. 1870. 

Devonian. Ohio. 
Erie shale, Newberry. Ohio Geol. Surv. Rept. Prog., 1869, p. 27. 1870. 

Devonian. Ohio. Part. syn. Chemung group of New York. 
Erie clays, Newberry. Am. Nat., vol. iv, p. 202. 1870. 
Erie clays, Newberry. Lyceum of New York, Annals, vol. ix, pp. 222-225. 1870. 

Pleistocene. Great Lakes region. Included in Drift deposit. 
Erie shale, Newberry. Ohio Geol. Surv., Rept. Prog., 1869, p. 21. 1871. 

Devonian. Ohio. 
Erie shale, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 163, 190. 1873. 

Devonian. Ohio. 
Erie shale. Read. Ohio Geol. Surv., vol. i, p. 486. 1873. 

Devonian. Ohio. 
Erie clay, Gilbert. Ohio Geol. Surv., vol. i, pt. i, p. 544. 1873. 

Pleistocene. Ohio. 
Erie clay, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 174. 1873. 

Pleistocene. Ohio. 
Erie muck, Collett. Ind. (Jeol. Surv., 5th Ann. Rept., for 1873, p. 408. 1874. 

Indiana. 
Erie shale, Newberry. Ohio (ieol. Surv., vol. ii, pp. 188, 213. 1874. 

Carboniferous. Ohio. 
Erie shale, Winchell. Ohio Geol. Surv., vol. ii, pp. 242, 264. 1874. 

Carboniferous. Ohio. 
Erie shale, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 76-82. 1875. 
Silurian. Pennsylvania and Ohio. Exact, syn. No. vii. 



154 NORTH AMKRICAN GEOLOQIC FORMATION NAMES. [Btiu. 

Eiitaw, Smith. Ala. (ie»l. Surv., Bull. No. 2, p. 14. 1S92. 

t'n'ta<-<-<iiii<. Alalmim. 
Kutaw, Siiiilli, JiiiiiiMiin, ami l^aiiiiiiiin. Ala. Cleol. Sunv, Ueol. of Coastal Pl^nof 
Ala., [.[.. " :, 21N1, :M11, 4:tl. 4.'J5. 1H94. 
Cretan-^iUB. Alaluiiia. 
Bverett schist, Hohlw, J.mr. ot Oeol., vol. I, p. 72H. 1893. 

Silurian. Mawiai'liuiH'ttH. Ino1u<le<l iii Mount Washin^tton series', Ordovician. 
BwinglinicHtonc, I^vejoy. <Hiio (ie.)l. Surv., vol. vi, pp. 631, 632. 1BS8. 

CarlKmifcioiiH. ( >hio. 
Exoffyra nrietma mar), Shumanl. St. Ijouis Anail. Sci., Trans., vol. i, p. 583. 
l«-i7. 
Cretacrtjus. Texas, 
ExoKyra arietiiia days, Hili. Tesas Geol. Surv., 1st Ann. Kept, pp. 128-129. 1890. 

CretB(«i>us. Tcxax. Included in Washila division of Comwiche series. 
Eji(«yra arietina irlay, Taft. Texas Geol. Surv., 4th Ann. Kept., pp. 275-283. 1893. 

CretaceouH. Texas. Inrlmleil in Washita diviHion of Lower Cretaceous. 
Bxogyra costata Herie«, Elill. Ark. Geol. Surv., I88H, vol. ii, pp. 67, 70-72, 96-109, 
177, im 18H8. 
Crelacpous. Arkansas. Iiu'tudes Upper Arenaceous beds. Chalky, marl Ijwls, 
Kncky (.-oinfort i;halk, Eaffle Ford i^lay, I»wer Cross Timber samls, 
Exogyra ponderosa marls. Hill. Texas (ieol. Surv., Ist Ann. Kept., pp, 114-116. 
1H90. 
Cretaceous, Tt'xas. Iiiclnile<l iti Black I'rairie series. 
Fairfax, Darton and Tafl. H. K, Ceol, Surv., Geol, Atlss of U. a, Folio No, 28. 
1896. 
Carboniferous. West Virginia and Maryland. 
Fairfax formation, Clark. Md. (Jenl. 8iirv., vol. i, pp. l^, 187. 1897. 

Carl)omferous, Marviaud. 
Fairmount gneiss, Kaud. I'bil. .\ra<l. Nat, Sci,, I'roc., IHOO, pp, 278-279. 1900. 

I'ennsyh-ania. 
Fall Biver liiiit^toni^ Hay. Kan. Acad. Sci,, Trans., vol, x, p. 7. 1887. 

Carboniferons. Kansas. 
rail* Croek conglomerate, \Vhit«. 2d l>a. Ue«\. Snrv,. Kept. Q", p. 237. 1881. 

Devonian. Pennsylvania. 
Falls Creek conglomerale, ]>»ley. 2d Pa, tleol. Surv., Final Rept., vol. ii, p. 1M6- 
1892. 
Devonian, IVnnnylvania. Includeil in Ohemuiiir. 
Falmouth, Hill, Harvard Coll. Mus. ol Conij}, Zool,, Bull., vol. xxxiv. pp 101- 
102. 1899. 
Pleistocene. Jamaica. Included in (Vtaslal series, 
Famham limestone, Klls. Can. Geitl. Surv., new ser., vol. vii, pp. 17J, 25J-27J. 
1896. 
Silurian. Quel;)ec, Includeil in Trenton. 
Fayette beds, Penrose, Texas Geol, Surv,, 1st Ann, Rept., pp. 47-58. 1890, 
Tertiary. Texas. Exart Syn. Grand Gulf series. 

Bxas Geol. Surv., Ist Ann. Kept., pi. iii, pp. xxsiii-xxxv. 

ided in Miocene. 
Am., Bull., vol. iii, p. 94, 1892. 
ided in Neocene. 

Texas Geol. Surv., .3d Ann. Kept,, pp. 60-62. 1892. 
)ded in Miocene. 

Texas Geol. Surv., Rept, on brown coal, pp. 154-167. 

uded in Eocene. 



^^BKKs.] EUTAW FERRIFEROUS. 155 

Fayette sands, Dumble. Jour, of Geol., vol. ii, pp. 552-554. 1894. 

Tertiary. Texas. Included in Eocene. 
Fayette sands, Kennedy. Phil. Acad. Nat. Sci., Proc., 1895, p. 95. 1895. 

Texas. Included in Eocene, Lower Claiborne. 
Fayette breccia, Norton. Iowa Geol. Surv., vol. iv, pp. 157-166. 1895. 

Devonian. Iowa. 
Fayette sandstone, Campbell and Mendenhall. U. S. Geol. Surv., 17th Ann. Kept., 
pt. ii, p. 497. 1896. 
Carboniferous. West Virginia. Included in No. xii, Conglomerate series. 
Fayette breccia, Calvin. Iowa Geol. Surv., vol. vii, pp. 58-62. 1897. 

Devonian. Iowa. Included in Wapsipinicon stage. 
Fayette breccia, Calvin. Iowa Geol. Surv., vol. vii, pp. 224-230. 1898. 

Devonian. Iowa. 
Fayette breccia, Udden. Iowa Geol. Surv., vol. ix, p. 269. 1899. 

Devonian. Iowa. 
Fayette sandstone. White. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 818-819. 
1900. 
Carboniferous. West Virginia. 
Fayetteville shale, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 42-48, 149. 1888. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Fayetteville shale, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 138-139. 1890. 
Carboniferous. Arkansas. Included in Lower Carboniferous or Mississippian 
series, Osage group. 
Fayetteville shale, Simonds and Hopkins. Ark. Geol. Surv., 1891, vol. ii, pp. 50-51. 
1891. 
Carboniferous. Arkansas. Included in Lower Carboniferous. 
Fayetteville shale, Drake. Am. Phil. Soc, Proc, vol. xxxvi, p. 352. 1897. 

Carboniferous. Indian Territory. Included in Lower Carboniferous. Exact syn. 
Warsaw. 
Federal Creek coal, Andrews. Ohio Geol. Surv., vol. i, pt. i, p. 271. 1873. 

Carboniferous. Ohio. Included in Coal Measures. Exact syn. Pomeroy seam. 
Felcli Mountain iron schists, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 
Algonkian. Michigan. Exact syns. Lower Huronian, Kee watin in part, Menominee. 
Fence-post limestone, Cragin. Colo. College Stud., vol. vi, p. 50. 1896. 

Cretaceous. Kansas. Exact syn. Downs limestone. 
Femandan system, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. Ivi. 
1890. 
Archean. Texas. Includes Click, Iron Mountain, and Valley Spring series. 
Femandan system, Comstock. Texas Geol. Surv., Ist Ann. Rept., pp. 267-276. 
1890. 
Archean. Texas. Includes Click, Iron Mountain, and Valley Spring series. 
Femandian system, Comstock. Texas Geol. Surv., 2d Ann. Rept., pp. 560-561, 
656-658. 1891. 
Archean. Texas. Includes Valley Spring, Iron Mountain, and Click series. 
Ferriferous limestone, Roy. Ohio State Mine Inspector, 3d Ann. Rept. , p. 153. 1876. 
Ferriferous limestone, Piatt. 2d Pa. Geol. Surv., Rept. H. 1878. 

Carboniferous. Pennsylvania. 
Ferriferous limestone, Piatt. 2d Pa. Geol. Surv., Rept. IP, p. 321. 1880. 

Carboniferous. Pennsylvania. 
Ferriferous limestone, Orton. Ohio Geol. Surv., vol. v, p. 16. 1884. 

Carboniferous. Ohio. Exact syns. Hanging Rock limestone, (^ray limestone. 
Ferriferous limestone, White. U. S. Geol. Surv., Bull. No. 65, p. 173. 1891. 
Carboniferous. Pennsylvania, Ohio, West Virginia, and Maryland. Included in 
Lower Coal Measures, Allegheny River series. 



156 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Ferruginous sand, Morton. Phil. Acad. Nat. Sci., Jour., vol. vi, p. iii. 1829. 

New Jersey and Delaware. Included in Secondary. Includes Greensand. 
Ferruginous sandstone, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 91, 
174, 193. 1855. 
Carboniferous. Missouri. Included in Mountain Lower Carboniferous limestone. 
Ferruginous sandstone, Shumard. Mo. Geol. Surv., 1st and 2d Ann. Kept., pt. ii, 
p. 181. 1855. 
Carl)oniferous. Missouri. 
Ferruginous sandstone, Engelmann. St. Louis Acad. Sci., Trans., vol. ii, p. 189. 
1868. 
Ijower Carboniferous. Illinois. 
Ferruginous sandstone, Shumard. Mo. Geol. Surv., Rept. 1855-1871, pp. 77, 279, 
292, 320. 1873. 
Carboniferous. Missouri. 
Ferruginous sandstone. Meek. Mo. Geol. Surv., Repts., 1855-1873, p. 172. 1873. 

Carboniferous. Missouri. Included in Lower Carboniferous. 
Ferruginous sandstone, Broadhead. Mo. Geol. Surv., Repts., 1873-74, pp. 24, 68, 185. 
1874. 
Carboniferous. Missouri. Included in Lower Carboniferous, Mountain limestone. 
Ferruginous sandstone, Broadhead. Mo. Greol. Surv., vol. viii, p. 355. 1895. 

Lower(?) Carboniferous. Missouri. Included in Kaskaskia. 
Fish Creek sandstone, Stevenson. 2d Pa. Geol. Surv., Rept. K, p. 42. 1876. 
Carboniferous. Pennsylvania. Included in Greene County group of Upper Barren 
Measures. 
Fish Creek sandstone, White. U. S. Geol. Surv., Bull. No. 65, p. 33. 1891. 

Carboniferous. Pennsylvania. Included in Permo-Carboniferous, Dunkard Creek. 
Fish House black clay, Woolman. N. J. Geol. Surv., Rept. 1896, p. 201. 1897. 

New Jersey. Exact syn. Pensauken. 
Fishpot limestone, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept. 1876, pp. 73-74. 
1887. 
Carboniferous. Pennsylvania. Included in Upper Productive or Monongahela 
River series. 
Flag limestone, Taff. Texas Geol. Surv., 3d Ann. Rept., p. 343. 1892. 

Cretaceous. Texas. Included in Fredericksburg division of Lower Cretaceous. 
Flagstone series, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 298-300. 1894. 

Devonian. New York. 
Flaming Gorge, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., pp.41, 
51,146,151. 1876. 
Juratrias. Utah. 
Flaming Gorge group, Gilbert. U.S. Geog. and Geol. Surv., Rept. on Henry Mts., 
p. 6. 1877. 
Juratrias. Utah. 
Flanagan chert, Campbell. U.S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 46. 1898. 

Silurian. Kentucky. 
Flathead, Peale. U. S. Geol. Surv., Bull. No. 110, p. 20. 1893. 

Cambrian. Montana. 
Flathead quartzite, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 1. 1894. 
Cambrian. Montana. 
Flathead, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cambrian. Montana. 
Flathead, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 1896. 
Cambrian. Wyoming. 



WBKKs.] FERRUGINOUS FLOYD. 1 57 

Flathead, Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 34. 1896. 

Cambrian. Montana. Includes Upper Flathead shales, Flathead limestones, 
Lower Flathead shales, and Flathead quartzite. 
Flathead sandstone, Waleott. Geol. Soc. Am., Bull., vol. x, p. 203. 1899. 

Cambrian. Montana. 
Flathead formation, Hague. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 52. 
1899. 
Cambrian. Wyoming. 
Flathead formation, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 
Cambrian. Yellowstone Park. 
Flathead sandstone. Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 285. 1900. 

Cambrian. Montana. 
Flat Rock stone, Cox. Indiana Geol. Surv., 8th, 9th, and 10th Ann. Repte. for 
187^-77-78, p. 89. 1879. 
Indiana. 
Flat^xroods group, Killebrew and Safford. Resources of Tenn., p. 44. 1874. 

Tertiary. Tennessee. 
Fleming: beds, Kennedy. Texas Geol. Geol. Surv., 3d Ann. Rept., pp. 62-63. 1892. 

Tertiary. Texas. Included in Miocene. 
Flint beds. Hay. U. S. Geol. Surv. Bull., No. 137, p. 17. 1896. 

Permo-Carboniferous. Kansas. 
Flint Hill, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 6. 1896. 

Permian. Kansas. Included in Lower division of Big Blue series. 
Flint Bidge limestone, Andrews. Ohio Geol. Surv., Rept. Prog., 1869, p. 92. 1870. 

Ohio. 
Flint Ridge limestone, Andrews. Ohio Geol. Surv., Rept. Prog., 1869, p. 95. 1871. 

Ohio. 
Flint Ridge shale, Herrick. Denison Univ. Sci. Lab., Bull., vol. ii, p. 12. 1887. 

Carboniferous. Ohio. 
Florence limestone, Prosser. Kan. Univ. Quart., vol. vi, pp. 171-172. 1896. 

Carboniferous. Kansas. Included in Chase formation, Permian. 
Florence flint, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 189-190. 1896. 
Carboniferous. Kansas. Included in Chase formation, Permian. Exact nyn. 
Upper Flint beds. 
Florence flint and limestone, Beede. Kan. Univ. Quart., vol. ix, p. 199. 1900. 

Carboniferous. Kansas. 
Floridian series, Heilprin. Wagner Free Inst. Sci., Trans., vol. i, pp. 28-32, pp. 64A, 
64B. 1887. 
Pliocene. Florida. Exact syn. Pliocene series of the Caloosahatchee. 
Floridian group, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 
Pliocene. Florida . and South Atlantic States. Inchided in Floridian epoch. 
Includes Caloosahatchee, Croatan, De Soto, and Waccamaw beds. 
Florisscint lake beds. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 
1894. 
Tertiary. Colorado. Included fn Eocene. 
Flowerpot shales, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 24-27. 1896. 

Permian. Kansas. Included in Cimarron series. 
Flowerpot shales, Cragin. Am. Geol., vol. xix, p. 355. 1897. 
Permian. Kansas, Oklahoma. Included in Glass Mountain formation of Cimarron 
series. 
Floyd shale, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 
Lower Carboniferous. Tennessee. 



158 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullIM. 

FIc.y.l Btialf, iUiytv. AIb. <i<-..l. Siirv., Bull. N... 4, p. J7. 1892. 

('arl)i>iufi'r<iiii<. AUIuiiiii. Iiii-liuUil in MirviFvippiwi neries. 
Fl<iy<l Hlialo, SjH-ncer. (!a. (Icol. Sun'., The I'alezoii- ({mup, pp. h2, 96. 1893. 

('arlxitiifeniiii'. (iiiirKia. Itii'liicleil in I.iiwfr ('arlH>iiiferoiiB. 
Fl(.y.l BhalcK, Hay.*, f. S. (ic.I. Hnrv., (i.-..!. Atlawof U.S., Foliim Nos. 2,6. 18M. 

Curium iteroiiH. ( itttjruia, Tt'nni-twi'. 
Floyd NhaJf, llayuM. (leiil. t^x: Am., Bull., v.il. v, p, 470. 1894, 

]^w<T CarlKHiifenius. (ieorjfiH.AIalNiTiiH. 
FoUaj linientoiK-, Keyt*. Iowa A.u.l. S<i., I'roi-., vol. v, p. 61. 1898. 

Ordivit'ian. Iowa. 
Fond du Lac Hamlxtntu', Witiclit'll. Minn. <i.^)i. ami Nat. Hist. Surv., Final Rept., 
vol. 4, p. rtiil. 181MI. 

Cambrian. M inncwita. 
Fomminiferal JiiiicHloiii', IjiwHon. 1'. S, (iyol. Sur\'., 16th Ann. li«pL, p. 419. 

1H!I.1. 
Mi'soxoii-. California. Iiiuludeil in t'ram^JM'an Heriea. 
Foraiiiiniferal liniiftonf, Andunton. Univ. of Cal., Dept. of Geol., Bull., vol. ii, p. 

i:k. iHia 

CretaceouitC!'). (^lituriiia. 
Forbe* limeHtonu, (Jallahor. Mo. Ct^l. Surv., Bien. Kept, p. 56. 181W. 

Ptniiian. Miwwmri. 
Forljes liintHtfini-, Keyur^ Aiu. <i(!ol., vol. xxiii, p. 309. 1899. 

Car1)oni[er(ii]!<, Mi>«<isKi|)|)i Valky. Included in Mixsourian aerieu. 
Forl>eB limestone, Keycs. Iowa Acad. Hei., Proc., vol. vii, p, 93. 1900. 

CarlxinifeniUH, Miswirwippi Valley. Inchuled in Coal Measures. 
Foreman l>eilx, DilliT. (ieol. S<h'. Am., Bull., vol. iii, p. 372. 1892. 

Trias. California. 
ForBBtbud, MHicf. Am. Jour. S-'i., *1 scr., vol. xv, pp. 339-341. 1878. 

PleitcK'ene. Iowa. 
ForcHt bed, Nuwlwrry. Indiana I>ejit. lii>ol. and Nat. Hist., 14th Ann. Bept, 
ia&4, p.91. 1884. 

Quaternary. Indiana. 
ForestMlage, Slierzer. Mich. (ieol. Surv., vol. vii, pt. i, pp. 140-141, 1900 

I'leiHUH'ene. Mii^hi|.iin. 
Forest City zone, (iailaher. Mo. (ieol. Sur\'., Bien. Kept., pp. 55, 57. 1898. 
Prelim, liupt. on Htructural ami econciniic kii'Iokv, p. 215, 1900. 

. ReptM. (or IKfT and 1838, (ieol. of Virginiaa, pp. 167, 



, KeptH. for 18;(7 aud IM;)8 ami (ieol. of Villas, pp. 

aud. Ineludett Chany and t'alciferoiw. Exact syna. Val- 

Luestone, Auroral. 

. HeptK. for 1837 and 1838 and (ieol. of Virginias, pp. 

iides Hudaon Uiver, Ttitm, and Trenton. Esact. syn. 

. K*'i>t. tor 1837 and Geol. of Vii^inias, p. 175. 1884. 
ii-t vyn, Medina, I^evant of Pennsylvania. 
. Rei'l. lor 18:t7 and CJeol. of Virginias, p. 177. 1884. 
L'lnded in Upper Silurian. Includes Clinton, Niagam, 
n. fjurgent and Scalent of PeDnsylvaoia. 



WEEKS.] FLOYD FORMATION NO. 10. 159 

Formation No. 6, Rogers. Rept. for 1837 and Geol. of Virginias, p. 178. 1884. 
1837. 
Silurian. Virginia. Exact syn. Lower Ilelderberg pre-Meridian of Pennsylvania. 
Forxnation No. 7, Rogers. Rept. for 1837 and Geol. of Virginias, p. 179. 1884. 

Silurian. Virginia. Exact syns. Oriskany, Meridian of Pennsylvania. 
Formation No. 8, Rogers. Rept. for 1837 and Geol. of Virginias, p. 179. 1884. 
1837. 
Devonian. Virginia. Includes Marcellus, Hamilton, Genesee, Portage, and 
Chemung. Part. syns. Cadent and Vergent of Pennsylvania. 
Formation No. 0, Rogers. Rept. for 1837 and Geol. of Virginias, p. 182. 1884. 

Devonian. Virginia. Exact syns. Catskill, Ponent of Pennsylvania. 
Formation No. 10, Rogers. Repts. for 1837 and 1839 and Cieol. of Virginias, pp. 
183, 335. 1884. 
Carboniferous. Virginia. Included in Lower Carboniferous. Exact syn. Ves- 
pertine sandstone of Pennsylvania. 
Forxnation No. 11, Rogers. Repts. for 1837, 1838, and 1839 and Geol. of Virginias, 
pp. 183, 201, 336. 1884. 
Carboniferous. Virginia. Exact syns. Greenbrier shales and limestone, Umbral 
shales and limestone of Pennsylvania. 
Formation No. 12, Rogers. Repts. for 1838, 1839, and 1840 and (ieol. of Virginias, 
pp. 201, 340, 487. 1884. 
Carboniferous. Virginia. Exact syn. Great conglomerate. Part. syn. Serai of 
Pennsvlvania. 
Formation No. 13, Rogers. Repts. for 1838, 1839, 1840 and Geol. of Virginias, pp. 
202, 342, 487, 506. 1884. 
Carboniferous. Virginia. Exact syn. Lower Coal group. Part. syn. Serai of 
Pennsylvania. 
Formation i, Rogers. N.J. CJeol. Surv., Final Rept., p. 46. 1840. 

New Jersey. 
Formation ii, Rogers. N. J. Geol. Surv., Final Rept., pp. 47-90. 1840. 

New Jersey. Exact syn. Blue limestone. 
Formation iii, Rogers. N. J. Geol. Surv., Final Rept., p. 93. 1840. - 

New Jersey. 
Formation iv, Rogers. N. J. Geol. Surv., Final Rept., p. 99. 1840. 

New Jersey. 
Formation v, Rogers. N. J. Geol. Surv., Final Rept., p. 103. 1840. 

New Jersey. 
Formation No. 14, Rogers. Rept. for 1840 and Geol. of Virginias, pp. 491, 510. 
1884. 
Carboniferous. Virginia. Exact syns. Lower shale and sandstone group. Lower 
Barren group. Part. syn. Serai of Pennsylvania. 
Formation No. 15, Rogers. Rept. for 1840 and Geol. of V^irginias, pp. 498, 513. 1884. 
Carboniferous. Virginia. Exact syn. Upper Coal group. Part. syn. Serai of 
Pennsylvania. 
Formation No. 5, Tyson. Md. State Agric. Chemist, 1st Rept., p. 32. 1860. 

Maryland. 
Formations Nos. 6 and 7, Tyson. Md. State Agric. Chemist, Ist Rept., p. 33. 1860. 

Maryland. 
Formation No. 8, Tyson. Md. State Agric. Chemist, 1st Rept., p. 34. 1860. 
Cambrian. Maryland. Exact syns. Primal of Pennsylvania; Potsdam sandstone 
of New York. 
Formation No. 10, Tyson. Md. State Agric. Chemist, 1st Rept., p. 35. 1860. 
Silurian. Maryland. Exact syns. Auroral series, Pennsylvania; Chazyand Black 
River of New York. 



160 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullWI. 

Formation No. 11, Tynon. Md. State Aj^ric. ('bemist, Ist Rept, p. 35. 1860. 

Maryland. 
Formation No. 12, Tynon. Md. State Ai^no. (^hemint, Ist Rept, p. 36. 1860. 
Silurian. Maryland. Kxai't nynw. Matinal series of Pennsylvania; Hudson River, 
l^tiea, and Trenton of New York. 
Formation No. 13, Tyson. Md. State Aprie. Chemist, 1st Rept., p. 36. 1860. 
Silurian. Marylan<l. Kxaet syns. Ix^vant series of Pennsylvania; Onedia con- 
glomerate and Medina sandstone of New York. 
Formation No. 14a, Tyson. Md. State Agric. Chemist, 1st Rept, p. 37. 1860. 
Silurian. Maryland. Exact syns. Surgent series of Pennsylvania, Clinton group 
nf New York. 
Formation No. 14b, Tyson. Md. State Agrie. Chemist, 1st Rept., p. 37. 1860. 
Silurian. Maryland. Exact syns. Sealent series of Pennsylvania; Onondagashale 
and Water-lime groups of New York. 
Formation No. 16a, Tyson. Md. State Agric. Chemist, 1st Rept, p. 38. 1860. 
Silurian. Maryland. Exact syns. Pre-Meridian of Pennsylvania, Lower Helder- 
berg limestone of New Y'ork. 
Formation No. 15b, Tyson. Md. State Agrie. Chemist, Ist Rept., p. 38. 1860. 
Silurian. Maryland. Exact syns. Meridian series of Pennsylvania; Oriskany 
sandstone of New York. 
Formation No. 16a, Tyson. Md. State Agric. Chemist, Ist Rept., p. 38. 1860. 
Devonian. Maryland. Exact syns. Cadent series of Pennsylvania; Marcellus, 
Hamilton, and Genesee of New York. 
Formation No. 16b, Tyson. Md. State Agric. Chemist, 1st Rept, p. 39. 1860. 
Devonian. Maryland. Exact syns. Vergent series of Pennsylvania; Portage, 
Ithaca, and Chemung grf)Ui)s of New York. 
Formation No. 17, Tyson. Md. State Agric. Chemist, Ist Rept, p. 39. 1860. 
Devonian. Maryland. Exact syns. Ponent series of Pennsylvania; Catskill group 
of New York. 
Formation No. 18a, Tyson. Md. State Agric. Chemist, 1st Rept, p. 39. 1860. 

Devonian. Maryland. Exact syn. Ycsi)ertine serit^s of Pennsylvania. 
Formation No. 18b, Tyson. ISId. State Agric. Chemist, 1st Rept, p. 40. 1860. 

CarlioniferouH. Maryland. Exact syn. Um])ral series of Pennsylvania. 
Formation No. 19, Tyson. Md. State Agric. Chemist, 1st Rept, p. 40. 1860. 

Carboniferous. Maryland. Exact syn. Serai series of Pennsylvania. 
Formation No. 20, Tyson. Md. State Agric. Chemist, 1st Rept, p. 41. 1860. 

Juratrias. Maryland 
Formation Nos. 21 and 22, Tyson. Md. State Agric. Chemist, 1st Rept, p. 41. 
1 800. 
Cretaceous. Maryland. 
Formation No. 23, Tyson. Md. State Agric. Chemist, 1st Rept., p. 43. 1860. 

Tertiary. Maryland. 
Formation No. 24, Tyson. Md. State Agric. Chemist, Ist Rept, p. 44. 1860. 

Pleistocene. Maryland. 
Fort Benton group, Meek and Hayden. Phil. Acad. Nat. Sci., Proc., vol. xiii, 
pp. 419, 421. 1862. 
Lower Cretaceous. Nebraska. Exact syn. Cretaceous No. 2. 
Fort Benton, Hayden. U. S. (Jeol. Surv. of Wyoming, Rept., pp. 87, 90. 1871. 

Cretaceous. Included in Ix)wer Cretaceous. P^xact syn. Cretaceous No. 2. 
Fort Benton, Hayden. U. S. (xeol. Surv. of Terr., lst-3d Ann. Repts., pp. 49,53. 
1873. 
Cretaceous. Exact syn. Cretaceous No. 2. 



WM«8.] FORMATION NO. 11 FORT PAYNE. 161 

Fort Benton group, Meek. U. S Geol. and Geog. Surv. of Terr., Mon., vol. ix, 
pp. xxviii-xxx. 1876. 
Cretaceous. 
Fort Benton, Hague. U. 8. Geol. Explor. of 40th Parallel, vol. ii, p. 42. 1877. 

Cretaceous. Colorado. Included in Colorado. 
Fort Benton group, Newton. Geology of the Black Hills, p. 174. 1880. 

Cretaceous. South Dakota. 
Fort Benton, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., vol. iii, Suppl., 
p. 96. 1881. 
Colorado, New Mexico. Included in Colorado group. Exact syn. Cretaceous 
No. 2. 
Fort Benton, Stevenson. Am. Geol., vol. iii, p. 393. 1889. 

Cretaceous. Colorado and New Mexico. 
Fort Benton, Calvin. Iowa Geol. Surv., vol. i, pp. 148-161. 1893. 

Cretaceous. Iowa. 
Fort Benton, Logan. Jour, of Greol., vol. vii, pp. 84-89. 1899. 

Cretaceous. Kansas and Nebraska. Included in Colorado formation. 
Fort Bridger, Fngelmann. U. S. A., Eng. Dept., Simpson's Explor. of the Great 
Basin, p. 287. 1876. 
Tertiary. Wyoming and Utah. 
Port Dodge beds, Keyes. Iowa Geol. Surv., 1st Ann. Rept., vol. i, pp. 135-137. 
1893. 
Cretaceous. Iowa. 
Fort Ellis beds, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 287. 1892. 

Tertiary. Montana. Included in Neocene. 
Fort Hays division, Mudge. U. S. Geol. and Geog. Surv. of Terr., Bull., vol. ii, 
pp. 218-221. 1876. 
Cretaceous. Kansas. 
Fort Hays, Mudge. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., p. 281. 
1877. 
Cretaceous. Kansas. Included in Niobrara. 
Fort Hays division, Williston. Kan. Univ. Quart., vol. iv, p. 251. 1896. 

Upper Cretaceous. Kansas. Included in Niobrara. 
Fort Hays limestone, Logan. Kan. Univ. Geol. Surv., vol. ii, pp. 219-220. 1897. 

Upper Cretaceous. Kansas. Included in Niobrara group. 
.Fort Hays beds, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-27. 1898. 

Upper Cretaceous. Kansas. Included in Niobrara. 
Fort Hays limestone, Logan. Jour, of Geol., vol. vii, pp. 89-90. 1899. 
Cretaceous. Kansas, Nebraska. Included in Niobrara. Exact syn. Lower Tim- 
pas beds. 
Fort Knox sandstone, Collett. Indiana Geol. Surv., 5th Ann. Rept., for 1873, 
p. 323. 1874. 
Ejdact syn. Fort Knox sandstone, No. 2. 
Fort Payne chert, Hayes. £reol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Lower Carboniferous. Alabama, Tennessee. 
Fort Payne chert, Hayes. Ala. Geol. Surv., Bull., No. 4, p. 46. 1892. 

Carboniferous. Alabama. Included in Sub-Carboniferous or Mississippian. 
Fort Payne chert, Gibson. Ala. Geol. Surv., Geol. Structure of Murphrees Valley, 
pp. 23, 93. 1893. 
Carboniferous. Alabama. Included in Sub-Carboniferous. Exact syn. Siliceous 
group. 
Fort Payne chert, Spencer. Ga. Geol. Surv., The Paleozoic group, pp. 51, 96. 1893. 
Carboniferous. Georgia. Included in Lower Carboniferous. 

BuU. 191—02 11 



162 NORTH AMEKICAN GEOLOGIC FORMATION NAME8. [Bci-i-m. 

Fort Payne chert, Hayes. Oeol. Soc. Am., Bui)., vol. v, p. 470. 1894. 

Ixuver CarhoniferouB. Alabama and fieorpa. 
Port Payne chert, Hayes. U. S. (ieol. Surv., Geol. Atlaa of U. S., Police Nos, 2, 4, 6, 
K, 19, 20. 21. 22, 35. 18&4-fl5. 1898. 
Carlxfiiileruiui. Georf^a. Tennei«ee, and Alabama. 
Fort ftiyne chert, Hayes. U. P. (ieol. 8orv.,Geol. Atlaeof U.S., FolioNo. 35. 1896. 

('arhoiiiferouH. Alabama. Part. eyn. Siliceous gronp. 
Port Payne chert, McCalley. Ala. fleol. Surv., Rept. on Valley Regions, pt. ii, pp. 
51-.^3, 172-183. 240-246, 292-299, 476-477, 5a}-5(M, 525-627, 643-»44, 735-745, 
809-811. 1897. 
CartoniferouH. Alabama. Included in Lower Snb-Carboniferous. Includes Tub- 
ciinibia limestone and Lauderdale chert. 
Fort Pt«TTe gro"!'' Meek and Hayden. Phil. Acad. Nat. Sci., Pn>c., vol. xiii, pp. 
419, 424. 1862. 
I'pper CretaceouH. Nebraska. Exact Hyn. CretaceouB No. 4. 
Fort I'ierre, Hayden. U, S. Gec)l. Surv. of Wyoming, Bept., pp. 87, 91. 1871. 

Cretaceinis. lni:Iude<i in Upper Cretaceous. Exact syn. Cretaceous No. 4. 
Fort I'ierre, Hayden. U. S. Geol. Surv. of Terr., IM-^ Ann. Repts., pp. 49, 55. 
IH73. 
('n'laceouii. Kxact syn. Cretai'eouB No. 4. 
Fort Pierre SfuPi ''leek. U. S. Geol. and Geog. Surv. of Terr., Mod., vol. ii, pp. 
xxjtiii-xxxv. 1876. 
('retaceons. 
Fort Pierre, lIuKue. U. S. Explor. of 40th Parallel, vol. ii, pp. 42, 1877. 

('reta«vou». Colorado. Include<l in Colorado formation. 
Fort Rerre, White. U. S. (ieiil. and Geog. Surv. of Terr.. 11th Ann. Bept, p. 187. 
1879. 
Cretat'eoUB. 
Fort Pierre KTOup, Newton. Geol, of RIack Hilla, pp. 172-173. 1880. 

('n^taceouH. South Dakota. 
Fort rierre, Slifvenaon. U. S. Ge(«. and Geol. Surv. W. of lOOIh M.. vol. iii. Suppl. 
p. 99. IKHl. 
CretaceouH, Colorado, New Mexico. Included in Colorado formation. Exact 
syn. Cretaceous No. 4. 
Fort Pierre, Ktevensoii. Am. Ceol, vol. Iii, p. 392. 1889. 

<'reta<'eouH. Colorado and New Mexico. 
Fort Pierre whale, Upham. IL S. Geol. Surv,. Mon.. vol. xxv. p. 86. 1895. 

Cretaceous. Minnesota. 
Fort Pierre group, I,(^n. Kan. Univ. (ieol. Surv., vol. ii, pp. 221-222. 1897, 

UpP*"" Crctai-eous. Kansas. Exact syn, I'ierre. 
Fort Baley limestone. Prosser. Geol. Soc. Am.. Hull., vol, vi, pp. 30, 48, 52. 1894. 

Permian. Kaneaa. 
Fort Riley lim.'Stone, Haworth. Kan. Univ. Geol. .Surv., vol. i. p. 190. 1896. 
Carboniferous, Kansas. Included in Chase fonnation, Permian, Exact ayn. 
Florence limestone. 

wson. C::an. Geol. Surv., Rept. 1879-80, p. 115R, 1881. 

lumbia. Includeii in Colorado group. Exact syn. Lower 

syn, Benton. 

9on. Am. Jour. Sci., 3d ser., vol. xxi, p. 392. 1881. 

Sxact syn. Benton. 

mnell. C^n. Geol. Surv,, new aer., vol. v, pt. i, pp. 470- 

3. 

[ntiluded in Colorado group. Includes Port St. John 



WEEK8.1 FORT PAYNE FORT WORTH. 163 

Fort Scott limestone, Swallow. Kan. Geol. Surv., Prelim. Rept., pp. 25-26. 1866. 

Carboniferous. Kansas. 
Fort Scott group, Broadhead. Mo. Geol. Surv., Rept 1873-74, pp. 101, 126, 158. 
1874. 
Carboniferous. Missouri. Included in Coal Measures. 
Fort Scott marble, Broadhead. St. Louis Acad. Sci., Trans., vol. iii, p. 225. 1878. 

Carboniferous. Missouri. 
Fort Scott series, Broadhead. Mo. Geol. Surv., vol. viii, p. 380. 1895. 

Upper Carboniferous. Kansas. Included in Coal Measures. 
Fort Scott cement rock, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 31-34, 100. 
1898. 
Carboniferous. Kansas. Included in Oswego limestones. 
Fort Selden, Hill. Geol. Soc. Am., Bull., vol. iii, p. 96. 1892. 

Tertiary. Texas. 
Fort Union, Meek and Hayden. Phil. Acad. Nat. Sci., Proc, vol. xiii, p. 433. 
1862. 
Nebraska. Exact syn. Great Lignite, Eocene{?). 
Fort Union or Great Lignite, Hayden. Phil. Acad. Nat. Sci., Jour., vol. vii, pp. 
12-13. 1869. 
Dakota and Nebraska. Included in Tertiary. Exact syn. Eocene(?). 
Fort Union, Hayden. U. S. Geol. Surv. of Wyoming, Rept., p. 93. 1871. 

Tertiary. Includetl in Eocene(?). 
Fort Union, Hayden. U. S. Geol. Surv. of Terr., lst-3d Ann. Repts., pp 56, 192. 
1873. 
Tertiary. Exact syn. Great Lignite. 
Fort Union group. Cope. U. S. Geol. and Geog. Surv. of Terr., Bull., No. 2, p. 6. 
1874. 
Cretaceous. 
Fort Union, Cope and Le Conte. Phil. Acad. Nat. Sci., Proc., vol. xxvi, pp. 10-12. 
1874. 
Cretaceous. 
Fort Union group. Cope. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ii, 
pp. 25-30. 1875. 
Cretaceous. 
Fort Union group. Meek. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ix, 
pp. Iv-lxi. 1876. 
Cretaceou8(?). 
Fort Union, Peale. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 141. 
1876. 
Tertiary. Colorado. Exact syn. Great Lignite group. 
Fort Union group. White. Am. Jour. Sci., 3d ser., vol. xxvi, pp. 120-123. 1883. 

Cretaceous. Montana. Included in Laramie group. 
Fort LTnion, Ward. U. S. Geol. Surv., 6th Ann. Rept., p. 438. 1885. 

Cretaceous, Tertiary. Rocky Mountains. Exact syn. Laramie. 
Fort Union, Clark. U. S. Geol. Surv., Bull., No. 83, p. 135. 1891. 

Cretaceous. Interior region. 
Fort Union, Weed. U. S. Geol. Surv., Bull., No. 106, p. 35. 1893. 

Tertiary. Montana. 
Fort Union, Weed. Am. Geol., vol. xviii, pp. 201-211. 1896. 

Tertiary. Montana. Included in Eocene. Exact syn. Paskapoo (Canada). 
Fort Union formation. Smith. Jour, of Geol., vol. viii, pp. 445-448. 1900. 

Tertiary. Western North America. Included in Eocene. 
Fort Worth limestone. Hill. Texas Geol. Surv., Ut Ann. Rept., p. 128. 1890. 
Cretaceous. Texas. Included in Washita division of Comanche series. Exact 
syn. Washita limestone. 



164 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.!! 

Fort Worth limestone, Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 516. 1891. 

Cretaceous. Texas. Included in Washita division. 
Fort Worth lime8U)ne, Taff. Texas Geol. Surv., 3d Ann. Rept, pp. 345-347. 1^ 

Cretaceous. Texas. Included in Washita division of Lower Cretaceous. 
Fort Worth limestone, Taff. Texas Geol. Surv., 4th Ann. Rept., pp. 263-275. 189lt 

Cretaceous. Texas. Included in Washita division of Lower Cretaceous. 
Fort Worth limestone. Hill. Geol. Sec. Am., Bull., vol. v, pp. 298, 323. 1894. 

Cretaceous. Texas. Included in Washita division. 
Fort Worth limestone. Hill and Vaughan. U. S. Geol. Surv., Geol. Atlas of 17. S.^ 
Folio No. 42. 1898. 

Cretac;eou8. Texas. Included in Comanche series. 
Fort Worth limestone, Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt 
ii, pp. 235-236. 1898. 

Cretaceous. Texas. Included in Washita division of Comanche series. 
Fort Worth limestone, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 16. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Fortymile series, Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 145—155. 
1898. 

Alaska. 
Fortymile series, Emmons. Nat. Geog. Mag., vol. ix, pp. 156, 157. 1898. 

Alaska. 
Fossiliferous limestone, Cook. Geol. of N. J., pp. 131-134. 1868. 

Silurian. New Jersey. Exact syn. Trenton limestone. 
Fountain, Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 1894. 

Carboniferous. Colorado. 
Fountain beds, Crosby. Essex Inst., Bull., vol. xxvii, p. 114. 1895. 

Carboniferous. Colorado. 
Fountain formation, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 

Juratrias. Colorado. 
Fountain beds series, Crosby. Geol. Soc. Am., Bull., vol. x, p. 43. 1899. 

Carboniferous. Colorado. 
Fourth Moraine, Todd. U. S. Geol. Surv., Bull., No. 144, p. 48. 1896. 

Pleistocene. Dakota. 
Fox Ford bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 378. 1883. 

Carboniferous. Texas. Included in Strawn division. 
Fox Hills beds, Meek and Hayden. Phil. Acad. Nat. Sci., Proc, vol. xiii, pp. 419, 
427. 1862. 

Upper Cretaceous. Nebraska. Exact syn. Cretaceous No. 5. 
Fox Hills, Hayden. U. S. Geol. Surv. of Wyoming, Rept., pp. 87, 91. 1871. 

Cretaceous. Included in Upper Cretaceous. Exact syn. Cretaceous No. 5. 
Fox Hill, Hayden. U. S. Geol. Surv. of Terr., lst-3d Ann. Repts., p. 49. 1873. 

Cretaceous. Exact syn. Cretaceous No. 5. 
Fox Hills group. Meek. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ix, 
pp. xxxv-xxxvii. 1876. 

Cretaceous. 
Fox Hill, Hague, U. S. Geol, Explor. of 40th Parallel, vol. ii, p. 28. 1877. 

Cretaceous. Colorado. 
Fox Hills, Endlich. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., p. 187. 
1877. 

Cretaceous. Colorado. 
Fox Hill group, King. U. S. Geol. Explor. of 40th Parallel, vol. i, p. 320-330. 1878. 

Cretaceous. Colorado, Wyoming and Utah. 
Fox Hills, Endlich. U.S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp.76, 
109, 125. 1878. 



^^s.3 FOBT WORTH FRANKLIN. 165 

Or^taceous. Colorado. 

>x: Hlills, White. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 19, 22, 

31. 1878. Cretaceous. Utah and Colorado. 
o^c Hills group, Stevenson. Am. Jour. Sci., 3d ser., vol. xvii, pp. 369-373. 1879. 
Creitaceous. Colorado. 
'ox Trills, White. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 187. 
1879. 
Oretaceous. 
rox: Hills, Endlich. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept, pp. 86, 
87, 109, 123. 1879. 
dretaceous. Wyoming. 
Fox Hills group, Newton. Geol. of the Black Hills, pp. 171-172. 1880. 

Oretaceous. South Dakota. 
Fox: Hills, Dawson. Science, vol. i, p. 429. 1883. 

O retaceous. Canada. 
Fox Hills group, Dutton. U. S. Geol. Surv., 6th Ann. Rept., pp. 136-140. 1885. 
Oi-etaceous. Northwestern New Mexico. Includes Upper and Lower Fox Hills 
shales. 
Fox: Hills group, Tyrrell. Can. Geol. Surv., new ser., vol. ii, pp. 129-131. 1887. 

Oretaceous. Canada. 
Fox: Hills, Stevenson. Am. Geol., vol. iii, p. 392. 1889. 

Cretaceous. Colorado and New Mexico. 
Fox Hills, Emmons, Cross, and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, p. 71. 
1896. 
Cretaceous. Colorado. Included in Montana group. 
Fox Hills group, Gilbert. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 567. 1896. 

Cretaceous. Colorado. 
Frairmental, Bain. Am. Jour. Sci., 4th ser., vol. v, pp. 438, 439. 1898. 

Carboniferous. Missouri. Included in Missourian series, Bethany limestone. 
Franciscan series, Lawson. Am. Geol., vol. xv, p. 347. 1895. 

Cretaceous(?). California. 
Franciscan series, Lawson. U. S. Geol. Surv., 15th Ann. Rept., p. 415. 1895. 
Mesozoic. California. Includes San Francisco sandstone, Foraminiferal lime- 
stones and Radiolarian cherts. 
Franciscan formation. Turner. Jour, of Geol., vol. vi, pp. 488-493. 1898. 
, Cretaceous. California. Exact syn. Golden Gate series. 

Franciscan, Willis. Geol. Soc. Am., Bull., vol. xi, p. 420. 1900. 
Cretaceous or Jurassic. California. 
I Franconia breccia, Huntington. Geol. of New Hamp., pt. ii, pp. 137-141. 1877. 
I Eozoic. New Hampshire. Included in Montalban group. 

Frankenfield, Hill. Harvard Coll. Mus. Comp. Zool., Bull., vol. xxxiv, p. 42. 
1899. 
Cretaceous. Jamaica. Included in Blue Mountains series. 
Frankford gneiss. Rand. Phil. Acad. Nat. Sci., Proc, 1900, p. 279. 1900. 

Pennsylvania. 
Frankfort slate, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., pp. 372-373. 1840. 

New York. 
Frankfort slate, Vanuxem. Geol. of N. Y., pt. iii, pp. 61-64. 1842. 

Paleozoic. New York. Included in Hudson River group. 
Frankfort slate, White. N. Y. State Mus., 51st Ann. Rept., vol. i, p. 33. 1899. 

Silurian. New York. Includes Utica and Hudson River. 
Franklin white limestone, Wolff and Brooks. U. S. Geol. Surv., 18th Ann. Rept., 
pt. ii, pp. 431-456. 1898. 
Pre-Cambrian. New Jersey. 



164 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Fort Worth limestone, Hill. Geol. Soc. Am., Bull., voL ii, pp. 503, 516. 1891. 

Cretaceous. Texas. Included in Washita division. 
Fort Worth limestone, Taff. Texas Geol. Surv., 3d Ann. Rept, pp. 345-347. 1892. 

Cretaceous. Texas. Included in Washita division of Lower Cretaceous. 
Fort Worth limestone, Taff. Texas Geol. Surv., 4th Ann. Rept, pp. 263-275. 1893. 

Cretaceous. Texas. Included in Washita division of Lower Cretaceous. 
Fort Worth limestone, Hill. Geol. Sec. Am., Bull., vol. v, pp. 298, 323. 1894. 

Cretaceous. Texas. Included in Washita division. 
Fort Worth limestone. Hill and Vaughan. U. 8. Geol. Surv., Geol. Atlas of L". S., 
Folio No. 42. 1898. 

Cretaceous. Texas. . Included in Comanche series. 
Fort Worth limestone. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt 
ii, pp. 235-236. 1898. 

Cretaceous. Texas. Included in Washita division of Comanche series. 
Fort Worth limestone, Vaughan. U. S. Geol. Surv., Bull., No. 164, p. 16. 1900. 

Cretaceous. Texas. Included in Comanche series. 
Fortymile series, Spurr. U. S. Geol. Surv., 18th Ann. Rept, pt. iii, pp. 145-155. 
1898. 

Alaska. 
Fortymile series, Emmons. Nat. Geog. Mag., vol. ix, pp. 156, 157. 1898. 

Alaska. 
FossiliferoiLS limestone. Cook. Geol. of N. J., pp. 131-134. 1868. 

Silurian. New Jersey. Exact syn. Trenton limestone, 
roiuitain, Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 1894. 

Carboniferous. Colorado. 
Fountain beds, Crosby. Essex Inst., Bull., vol. xxvii, p. 114. 1895. 

Carboniferous. Colorado. 
Fountain formation, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 

Juratrias. Colorado. 
Fountain beds series, Crosby. Geol. Soc. Am., Bull., vol. x, p. 43. 1899. 

Carboniferous. Colorado. 
Fourth Moraine, Todd. U. S. Geol. Surv., Bull., No. 144, p. 48. 1896. 

Pleistocene. Dakota. 
Fox Ford bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 378. 1883. 

Carboniferous. Texas. Included in Strawn division. 
Fox Hills beds, Meek and Hayden. Phil. Acad. Nat. Sci., Proc, vol. xiii, pp.419, 
427. 1862. 

Upper Cretaceous. Nebraska. Exact syn. Cretaceous No. 5. 
Fox Hills, Hayden. U. S. Geol. Surv. of Wyoming, Rept., pp. 87, 91. 1871. 

Cretaceous. Included in Upper Cretaceous. Exact syn. Cretaceous No. 5. 
Fox Hill, Hayden. U. S. Geol. Surv. of Terr., l8t-3d Ann. Repts., p. 49. 1873. 

Cretaceous. Exact syn. Cretaceous No. 5. 
Fox Hills group. Meek. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ix, 
pp. xxxv-xxxvii. 1876. 

Cretaceous. 
Fox Hill, Hague, U. S. Geol, Explor. of 40th Parallel, vol. ii, p. 28. 1877. 

Cretaceous. Colorado. 
Fox Hills, Endlich. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., p. 187. 
1877. 

Cretaceous. Colorado. 
Fox Hill group, King. U. S. Geol. Explor. of 40th Parallel, vol. i, p. 320-330. 1878. 

Cretaceous. Colorado, Wyoming and Utah. 
Fox Hills, Endlich. U.S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp.76, 
109, 125. 1878. 



i^EEKs.l FREDERICKSBURG GALE. 167 

5"re^I>ort limestone, Upper, White. U. S. Geol. Surv., Bull., No. 65, p. 159. 1891. 
Ca.rboniferous. Ohio, Pennsylvania, and West Virginia. Included in Lower Coal 
Measures, AU^heny River series. Exact syns. Shawnee, White, Buchtel, 
Summit ore. 
Freej>ort limestone. Lower, White. U. S. Geol. Surv., Bull., No. 65, p. 163. 1891. 
Oax-boniferous. Ohio, Pennsylvania. Included in Lower Coal Measures, Alle- 
gheny River series. Exact syn. Buff limestone of Ohio. 
Freepiort sandstone. Upper, White. U. S. Geol. Surv., Bull., No. 65, p. 160. 1891. 
Oai-boniferous. Pennsylvania, and West Virginia. Included in Lower Coal 
Measures, Allegheny River series. 
Free port sandstone, Lower, White. U. S. Geol. Surv., Bull., No. 65, p. 163. 1891. 
Oarboniferous. Pennsylvania, Ohio and West Virginia. Included in Lower Coal 
Measures, Allegheny River series. 
Freeport sandstone. White. Geol. Soc. Am., Bull., vol. iii, p. 187. 1892. 

Upper Carboniferous. West Virginia. Included in Lower Coal Measures. 
Freeport clay and shales. Lower, Orton. Ohio Geol. Surv., vol. vii, pp. 63, 67. 1893. 

Oarboniferous. Ohio. 
Freeport clay and shales. Upper, Orton. Ohio Geol. Surv., vol. vii, pp. 63, 67. 1893. 

Carboniferous. Ohio. 
Freeport gravel, Sardeson. Am. Geol., vol. xx, p. 400. 1897. 

Pleistocene. Wisconsin. 
Freeport gravel, Hershey. Am. Geol., vol. xix, p. 137. 1897. 

Pleistocene. Illinois. 
Freeport group. White. Geol. Soc. Am., Bull., vol. xi, pp. 153-155. 1900. 

Carboniferous. Pennsylvania. Included in Allegheny series. 
Fremont limestone, Walcott. Geol. Soc. Am., Bull., vol. iii, pp. 153, 157, 170. 1892. 

Ordovician. Colorado. 
Fremont limestone. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 
1894. 
Silurian. Colorado. 
Frickhcim bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 403. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Frio clays, Dumble. Jour, of Geol., vol. ii, pp. 554-555. 1894. 

Tertiary. Texas. Included in Eocene. 
Frio clays, Kennedy. Phil. Acad. Nat. Sci., Proc., 1895, p. 93. 1895. 

Texas. Included in Eocene, Lower Claiborne. 
Frog- Mountain sandstone, Hayes. Geol. Soc. Am., Bull., vol. v, p. 470. 1894. 

Lower Devonian. Georgia and Alabama. Included in Oriskany (?). 
Frostbnrg' coal formation, Tyson. Md. Acad, of Sci. and Lit., article iv, pp. 92-98. 
1837. 
Carboniferous. Maryland. 
Frostburg formation, Clark. Md. Geol. Sur\\, vol. i, pp. 156, 188. 1897. 

Carboniferous. Maryland. Included in Permian. 
Frostburg, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Permian. Maryland. 
FuUing-ton shale, Cragin. Am. Geol., vol. xvi, p. 379. 1895. 
Cretaceous. Kansas. Included in Belvidere beds. Includes Black Hill shale, 
Blue Cut shale. 
Fusnlina limestone, Worthen. III. Geol. Surv., vol. vii, p. 27. 1883. 

Carboniferous. Illinois. Included in Coal Measures. 
Gale sands, Willis and Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 54. 
1899. 
Pleistocene. Washington. 



168 NORTH AMERICAN GEOLOGIC FORMAT ON NAMES. [bullISL 

Galena limestone, Whitney. Iowa Geol. Surv., vol. i, pt i, pp. 288-290, 298-302, 
350-356. 1858. 

Silurian. Iowa. 
Galena limestone, Hall. Iowa Geol. Surv., vol. i, pp. 60-63. 1858. 

Silurian. Iowa. Exact syn. Upper Magnesian limestone. 
Galena limestone, Hall and Whitney. Am. Jour. Sci., 2d ser., vol. xxvii, p. 108. 
1859. 

Silurian. Iowa. 
Galena limestone, Whitney. Rept. on Upper Mississippi lead r^on, p. 168. 1862. 

Silurian. Wisconsin. Exact syn. Upper Magnesian or Cliff limestone. 
Galena limestone, Worthen. III. Geol. Surv., vol. i, pp. 141-149. 1866. 

Silurian. Illinois. Included in Trenton group. 
Gralena limestone, Whitney. III. Greol. Surv., vol. i, pp. 169-172. 1866. 

Silurian. Illinois. 
Galena limestone. White. Iowa G«ol. Surv., vol. i, pp. 177-180. 1870. 

Silurian. Iowa. Included in Trenton group. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. Hept, 
pp. 49-53. 1870. 

Lower Silurian, Minnesota. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 1st Ann. Rept, 
pp. 104-108. 1873. 

Lower Silurian. Minnesota. 
Galena limestone, Shaw. 111. Geol. Surv., vol. v, pp. 17-21, 36-38, 66-69, 76-77, 
86-88, 99-100, 111-113, 129-131, 154-155. 1873. 

Silurian. Illinois. Included in Trenton. 
Galena group, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 28. 1874. 

Lower Silurian. Missouri. 
Galena limestone, Harrington. Minn. Geol. and Nat. Hist, surv., 4th Ann. Bept, 
p. 91. 1876. 

Lower Silurian. Minnesota. 
Galena limestone, Chamberlin. Geol. of Wis., vol. ii, p. 305-314. 1877. 

Lower Silurian. Wisconsin. 
Galena limestone, Irving. Geol. of Wis., vol. ii, p. 562. 1877. 
Galena limestone. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 275, 284. 

1881. 
Galena, Chamberlin. Geol. of Wis., vol. i, pp. 105, 165-170. 1883. 

Silurian. Wisconsin. Included in Trenton period. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 

p. 293. 1884. 
Galena limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. 
Galena limestone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 327. 1891. 

Silurian. Iowa. 
Galena, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 368. 1892. 

Lower Silurian. Minnesota. Included in Trenton. 
Galena limestone, Keyes. Iowa Geol. Surv., vol. i, pp. 26-28. 1893. 

Silurian. Iowa. 
Galena, Winchell. Am. Geol., vol. xv, p. 33. 1895. 

Silurian. Mississippi Valley. 
Galena limestone, Calvin. Iowa Geol. Surv., vol. iv, pp. 80-81. 1895. 

Silurian. Iowa. Included in Ordovician. 
Galena-Trenton, Norton. Iowa Geol. Surv., vol. iii, pp. 178-180. 1895. 

Silurian. Iowa. 
Galena limestone, Udden. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 835. 1896. 

Silurian. Illinois. 



EBK8.] GALENA GABNETT. 169 

alena, Sardeson. Am. Geol., vol. xviii, pp. 356-368. 1896. 
Siluriaxi. Minnesota^ Wisconsin, and Iowa. Exact syn. Trenton. 
alena limestone, Winchell and Ulrich. Minn. Geol. and Nat. Hist. Surv., Final 

Rept. , vol. iii, ptr ii, p. xcvii. 1897. 
Lower Silurians Minnesota. Included in Trenton group. 
ralena formation, Sardeson. Am. G^eol., vol. xix, pp. 24, 29-30, 330-336. 1897. 
Silurian. Mississippi Valley. Included in Lower Silurian. Includes Maclurea, 

Lingulelasma, Camerella, and Orthisina beds. 
ralena limestone, Galvin and Bain. Iowa G^ol. Surv., vol. x, p. 423. 1900. 

SUnrian. Iowa. Included in Ordovician. 
Salisteo sandstone, Cope. Kept, of Secy, of War to 44th Cong., vol. ii, pt. ii, p. 997. 
1875. 
Oretaceous(?). New Mexico, 
jralisteo group, Stevenson. Am. Jour. Sci., 3d ser., vol. xviii, pp. 471-475. 1879. 

Cretaceous. New Mexico. 
Gralisteo group, Stevenson. TJ. S. Geog. and Geol. Surv. W. of 100th M., vol. iii, 
Suppl., p. 169. 1881. 
Tertiary. New Mexico. 
Galisteo group, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 301. 1892. 

Tertiary. New Mexico. 
Gallatin, Peale. U. S. Geol. Surv., Bull., No. 110, p. 22. 1893. 

Cambrian. Montana. 
Gallatin limestone, Iddingsand Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 1. 1894. 
Cambrian. Montana. 
Gallatin, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cambrian. Montana. 
Gallatin limestone. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 
1896. 
Cambrian. Wyoming. 
Gallatin limestone. Weed and Pirsson. U. S. Geol. Surv., Bull., No. 139, p. 37. 1896. 

Cambrian. Montana. 
Grallatin limestone, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 
Cambrian. Yellowstone Park. 
Oallatin limestone, Hague. U. S. Geol. Surv., Geol. Atlas of the U. S., Folio No. 52. 
1899. 
Cambrian. Wyoming. 
CkOlitzen limestone, Piatt. 2d Pa. Geol. Surv., Rept. H^ p. 312. 1880. 

Carboniferous. Pennsylvania. 
Gait Moraine, Taylor. Am. Assoc. Adv. Sci., Proc, vol. xlviii, p. 228. 1899. 

Pleistocene. Canada. 
G^ardeau group. Hall. N. Y. Geol. Surv., 4th Ann. Kept., pp. 394, 402. 1840. 

Devonian. New York. 
Gardeau group. Hall. N. Y. Geol. Surv., 5th Ann. Rpt., pp. 165-166. 1841. 

Devonian. New York. 
Gardeau, Hall. Am. Jour. Sci., Ist ser., vol. xlii, p. 55. 1842. 

Ohio. 
Gardeau shale. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 227-228. 1843. 

Paleozoic. New York. Included in Portage group. 
Garland conglomerate, Carll. 2d Pa. Geol. Surv., Rept. I^ pp. 12-57. 1880. 
Carboniferous. Pennsylvania and New York. Included in Pottsville. Exact 
syn. Glean. 
Gamett limestone, Haworth and Kirk. Kan. Univ. Quart., vol. ii, p. 110. 1894. 
Carboniferous. Kansas. Exact syn. Burlington limestone. 



168 NOKTH AMERICAN GEOLOGIC FORMAT ON NAMES. [bull.1«L 

Galena limestone, Whitney. Iowa Geol. Surv., vol. i, pt i, pp. 288-290, 298-302, 
350-356. 1858. 

Silurian. Iowa. 
Galena limestone, Hall. Iowa Geol. Surv., vol. i, pp. 60-63. 1858. 

Silurian. Iowa. Exact syn. Upper Magnesian limestone. 
Galena limestone. Hall and Whitney. Am. Jour. Sci., 2d ser., vol. xxvii, p. 108. 
1859. 

Silurian. Iowa. 
Cralena limestone, Whitney. Rept. on Upper Mississippi lead r^on, p. 168. 1862. 

Silurian. Wisconsin. Exact syn. Upper Magnesian or Cliff limestone. 
Galena limestone, Worthen. 111. Geol. Surv., vol. i, pp. 141-149. 1866. 

Silurian. Illinois. Included in Trenton group. 
Gralena limestone, Whitney. 111. Geol. Surv., vol. i, pp. 169-172. 1866. 

Silurian. Illinois. 
Galena limestone, White. Iowa G«ol. Surv., vol. i, pp. 177-180. 1870. 

Silurian. Iowa. Included in Trenton group. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. Rept, 
pp. 49-53. 1870. 

Lower Silurian, Minnesota. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 1st Ann. Rept., 
pp. 104-108. 1873. 

Lower Silurian. Minnesota. 
Galena limestone, Shaw. 111. Geol. Surv., vol. v, pp. 17-21, 36-38, 66-69, 76-77, 
86-88, 99-100, 111-113, 129-131, 154-155. 1873. 

Silurian. Illinois. Included in Trenton. 
Galena group, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 28. 1874. 

Lower Silurian. Missouri. 
Galena limestone, Harrington. Minn. Geol. and Nat. Hist, surv., 4th Ann. Rept, 
p. 91. 1876. 

Lower Silurian. Minnesota. 
Galena limestone, Chamberlin. Geol. of Wis., vol. ii, p. 305-314. 1877. 

Lower Silurian. Wisconsin. 
Galena limestone, Irving. Geol. of Wis., vol. ii, p. 562. 1877. 
Galena limestone. Miller. Gin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 275, 284. 

1881. 
Galena, Chamberlin. Geol. of Wis., vol. i, pp. 105, 165-170. 18^3. 

Silurian. Wisconsin. Included in Trenton period. 
Galena limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 

p. 293. 1884. 
Galena limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. 
Galena limestone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 327. 1891. 

Silurian. Iowa. 
Galena, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 368. 1892. 

Lower Silurian. Minnesota. Included in Trenton. 
Galena limestone, Keyes. Iowa Geol. Surv., vol. i, pp. 26-28. 1893. 

Silurian. Iowa. 
Galena, Winchell. Am. Geol., vol. xv, p. 33. 1895. 

Silurian. Mississippi Valley. 
Galena limestone, Calvin. Iowa Geol. Surv., vol. iv, pp. 80-81. 1895. 

Silurian. Iowa. Included in Ordovician. 
Galena-Trenton, Norton. Iowa Geol. Surv., vol. iii, pp. 178-180. 1895. 

Silurian. Iowa. 
Galena limestone, Udden. U. S. Geol. Surv., 17th Ann. Rept., pt ii, p. 835. 1896. 

Silurian. Illinois. 



WBBK8.] GALENA GABNETT. 169 

Galena, Sardeeon. Am. Geol., vol. xviii, pp. 356-368. 1896. 

Silurian. Minnesota, Wisconsin, and Iowa. Exact syn. Trenton. 
Galena limestone, Winchell and Ulrich. Minn. Geol. and Nat Hist Surv., Final 
Rept, vol. iii, ptr ii, p. xcvii. 1897. 

Lower Siluriawr Minnesota. Included in Trenton group. 
Galena formation, Sardeson. Am. G^eol., vol. xix, pp. 24, 29-30, 330-336. 1897. 

Silurian. Mississippi Valley. Included in Lower Silurian. Includes Maclurea, 
Lingulelasma, Camerella, and Orthisina beds. 
Galena limestone, Gralvin and Bain. Iowa Geol. Surv., vol. x, p. 423. 1900. 

Silurian. Iowa. Included in Ordovician. 
Qalisteo sandstone, Cope. Rept. of Secy, of War to 44th Cong., vol. ii, pt ii, p. 997. 
1875. 

Cretaceous(?). New Mexico. 
Galisteo group, Stevenson. Am. Jour. Sci., 3d sen, vol. xviii, pp. 471-475. 1879. 

Cretaceous. New Mexico. 
Gralisteo group, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., vol. iii, 
Suppl., p. 159. 1881. 

Tertiary. New Mexico. 
Galisteo group, Dall and Harris. U. S. Geol. Surv., Bull., No. 84, p. 301. 1892. 

Tertiary. New Mexico. 
Gallatin, Peale. U. S. Geol. Surv., Bull., No. 110, p. 22. 1893. 

Cambrian. Montana. 
Gallatin limestone, Iddingsand Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 1. 1894. 

Cambrian. Montana. 
Gallatin, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cambrian. Montana. 
Gallatin limestone. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 
1896. 

Cambrian. Wyoming. 
Gallatin limestone. Weed and Pirsson. U. S. Geol. Surv., Bull., No. 139, p. 37. 1896. 

Cambrian. Montana. 
Gallatin limestone, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 

Cambrian. Yellowstone Park. 
Gallatin limestone, Hague. U. S. Geol. Surv., Geol. Atlas of the U. S., Folio No. 52. 
1899. 

Cambrian. Wyoming. 
Gallitzen limestone, Piatt. 2d Pa. Geol. Surv., Rept. H\ p. 312. 1880. 

Carboniferous. Pennsylvania. 
Gait Moraine, Taylor. Am. Assoc. Adv. Sci., Proc, vol. xlviii, p. 228. 1899. 

Pleistocene. Canada. 
Chardeau group. Hall. N. Y. Geol. Surv., 4th Ann. Rept, pp. 394, 402. 1840. 

Devonian. New York. 
Gardeau group. Hall. N. Y. Geol. Surv., 5th Ann. Rpt, pp. 165-166. 1841. 

Devonian. New York. 
Gardeau, Hall. Am. Jour. Sci., 1st ser., vol. xlii, p. 55. 1842. 

Ohio. 
Gardeau shale. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 227-228. 1843. 

Paleozoic. New York. Included in Portage group. 
Garland conglomerate, Carll. 2d Pa. Geol. Surv., Rept. I^ pp. 12-57. 1880. 

Carboniferous. Pennsylvania and New York. Included in Pottsville. Exact 
syn. Olean. 
Gamett limestone, Haworth and Kirk. Kan. Univ. Quart., vol. ii, p. 110. 1894. 

Carboniferous. Kansas. Exact syn. Burlington limestone. 



170 NOBTH AMERICAN GEOLOGIC FORMATION NAMEB. (hdli-im. 

Gamett limeHtone, Hawoith. Kan. Univ. Ijiiart., vol. ii, pp. 120-121, 125. 1894. 

CarboniCeroiu. Kansae. 
Gamett limartone, Haworth. Am. Jour. Sci., 3il ser., vol. I, p. 460. 1895. 

Carbon! feroaa. Kansaa. Included in Coal Measures. 
Gamett limestone, Bennett. Kan. Univ., Geol. Surv., vol. i, pp. 60; 71. 1896. 

Carbon iferouB. Kansas. Includes No. 112 and No. 108 or PUttaburg syet«ni in 
Kansas City section of Broadhead. 
Garnett limestone, Hall. Kan. Univ. Geol. Riirv., vol. i, pp. 101-102. 1886. 

Carboniferous. K ansae. 
Gamett limectone, llaworth. Kan. Univ. Geol. fiurv., vol. i, pp. 49-60, 135-136, 157- 
160, 166. 1896. 

Carboniferous. Kansas. £xa<rt syn. Burlington limestone. 
Gumett limestone, Kirk. Kan. Univ. Geol. Surv., vol. i, p. 79. 1896. 

Carluaiferous. Kansas. Exact syn. Burlington limestone. 
Gamett limestone, Haworth. Kan. Univ. Geol. Surv., vdl. iii, pp. fi, 55-56, 92, 91, 
103, 104. 1898. 

Carboniferous, Kansas. Included in Pottawatomie formation. Exact syns. Bur- 
lington limestone and Carlyle limestone. 
O&rrard sandstone, Campbell. U.S. Geol. Surv., Geol. Atlas of U.S., Folio No. 46. 
1898. 

Silurian. Kentucky. 
Gary moraine, Todd. U. 8. Geol. Surv., Bull., No. 144, p. 33. 1896, 

Pleistocene. Dakotas. Exact syn. Second moraine. 
Gary moraine, Todd. U. S. Geol. Surv., Bull., No. 157, pp. 113^127. 1899. 

Pleistocene. South Dakota. 
Oaaconade limestone, Winslow. Mo. Geol. Surv., vol. ii, pp. vii, 115. 1892. 

Cambrian. Missouri. 
Gasconade, Naaon. Am. Geol,, vol. xi, p. 94. 1893. 

Missouri. 
Gasconade limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Cambrian. Missouri. Included in 07Jirk series. Includes Jefferson City lime- 
stone, Moreau sandstone, Osa^ limestone, Cole Camp sandstone, and Proctor 
limestone. 
Oaspe limestones, Logan. Can. Geol. Surv., Repts., 1843-1863, pp. 390-394, 1863. 

Silurian. Canada. Included in Middle and Upper Silurian. Gaspe series. 
Gaspe sandstones, Logan. Can. Geol. Sur\-., Bepts., 1843-1864, pp. 394-404. 1863- 

Devonian. Cojiada,, Included in Gaapc series. 
Gaspe series, Logan. Can. Geol. Surv,, Eepts., 1843-1863, pp. 406-453, 880-886. 1863. 

Canada. Included in Middle and Upper Silurian and Devonian, and Lower Cai^ 
boniferous. Includes Gaspe limestone, and Gaspe sandstone, Bonaventure 
formation. 
Gaspe sandstone, Billings. Can. Geol. Surv., Pal. fossils, vol. ii, pt. i, pp. 1-7. 1874. 

Devonian. Nova Scotia. 
Gaspe series, Ells. Can. Geol. Surv., Bepts., 18S0-1 881-1 882, p. 3DD. 1883. 

Devonian. New Brunswick. Includes Gaspe sandstone, and Gaspe limestone. 
Gaspe aeries, Ells. Can. Geol. Surv., Repta., 1882-1883-1884, pp. 19E-25E. 1885, 

Devonian. New Brunswii^k. 
Gaspe series, Williama. U. S. Geol. Surv., Bull., No. 165, p. 39. 1900. 

Silurian. Canada. 
Ghivilan limestone, Ashley. Jour, ot Geol., vol. iii, p. 436. 1895. 

Pre-Cretaceous. California. 
- "^"vilan limestone, Ashley. Cal. Acad. Sci., Proc,, 1895, 2d ser., vol, v, pp. 285- 



WEEKS] GABNETT GENTILE VALLEY. 171 

Genesee slate, Vanuxem. Greol. of New York, pt. iii, pp^ 168-169. 1842. 

Paleozoic. New York. Incladed in New York system. Includes Black slate. 
Genesee slate, Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 218-221. 1843. 

Paleozoic. New York. Included in New York system. Includes Upper Black 
slate and Black slate. 
Genesee slate, Emmons. Agric. of N. Y., vol. i, pp. 189-190. 1846. 

Devonian. New York. Included in Catskill division of New York system. 
Genesee slate, Dawson. Am. Jour. Sci., 2d ser., vol. xxxv, pp. 314-319. 1863. 

Devonian. Canada. 
Genesee, Ash burner. Am. Phil. Soc., Proc., vol. xvi, pp. 528, 551. 1877. 

Devonian. Appalachian r^on. Exact syn. Upper Cadent. 
Genesee, Piatt. 2d Pa. Geol. Surv., Kept. T, pp. 30-31. 1881. 

Devonian. Pennsylvania. 
Genesee shale, Williams. Am. Assoc. Adv. Soi., Proc, vol. xxx, p. 186-191. 1882. 

Devonian. New York. 
Genesee, White. 2d Pa. Geol. Surv., Kept. G«, 107-109. 1882. 

Devonian. Pennsylvania. Included in No. viii. Exact syn. Upper Hamilton. 
Genesee^ White. 2d Pa. Geol. Surv., Kept. T«, pp. 107-108. 1885. 

Devonian. Pennsylvania. 
Genesee, Williams. U. S. Geol. Surv. , Bull. , No. 41, p. 31. 1887. 

Devonian. New York. 
Genesee slate, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. ii, pp. 1323-1335. 1892. 

Devonian. Pennsylvania. Exact syn. No. viiie. 
Genesee group, Luther. N. Y. State Geologist, 13th Ann. Rept., pp. 34-38. 1894. 

Devonian. New York. 
Genesee shale, Prosser. U. S. Geol. Surv., Bull., No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Hamilton (Middle Devonian). 
Exact syns. Tully and Hamilton. 
Genesee shale, Lincoln. N. Y. State Geol., 14th Ann. Rept, pp. 97-99; N. Y. State 
Mus. , 48th Ann. Rept. , pt. ii, pp. 97-99. 1895. 

Devonian. New York. 
Genesee shales, Grabau. Buffalo Soc. Nat. Hist., Bull., vol. vi, pp. 9-11. 1898. 

Devonian. New York. 
Genesee shale, Prosser. Roch. Acad. Sci. , Proc. , vol. ii, pp. 50-124. 1898. 

Devonian. New York. 
Genesee slate, Luther. N. Y. State Geol. , 16th Ann. Rept. , p. 221. 1899. 

Devonian. New York. 
Gbneva magnesian limestone, Collett. Indiana Dept. Geol. and Nat. Hist., 11th Ann. 
Rept. for 1881 , pp. 81 , 82. 1882. 

Indiana. 
Geneva sands. Smith. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 286-291. 1894. 

Tertiary. Alabama. 
Ganevieve group, Branner. Ark. Geol. Surv., 1888, vol. iv, p. xiv. 1888. 

Carboniferous. Arkansas. Included in I^ower Carboniferous or Mississippian 
series. Part syns. St. Louis arid Warsaw. 
Genevieve group, Williams. U. S. Geol. Surv., Bull. No. 80, p. 169. 1891. 

Carboniferous. Included in Mississippian series. Includes Chester, St. Louis, and 
Warsaw in part. 
Genevieve group, Broadhead. Am. Geol., vol. xii, p. 85. 1893. 

Carboniferous. Missouri. Included in Mississippian series. Includes Chester, 
St. Louis, and Warsaw. 
Gentile Valley group, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. 
Rept., p. 642. 1879. 

Pleistocene. Utah. Included in Quaternary. 



172 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullWL 

Geode bed, Worthen. I(4wa (ieol. Surv., vol. i, pt. i, pp. 193, 202, 216, 227, 237. 
1858. 
Carboniferous. Iowa. 
Geode shales, Gordon. Iowa (ieol. Surv., vol. iv, p. 213. 1895. 

Carl)oniferou8. Iowa. 
Qeorg*e River limestone, Fletcher. Can. Geol. Surv., Rept. of Prog., 1876-77, p. 426. 
1878. 
Nova Scotia. 
George River limestone series, Fletcher. Can. (Teol. Surv., Descriptive note on 
the Sydney Coal field, p. 5. 1900. 
Nova Scotia. 
Georgetown limestone, Vaughan. U. S. (ieol. Surv., (ieol. Atlas of U. S., Folio 
No. 64. 1900. 
Cretaceous. Texas. 
Georgia group, Hitchcock. Geol. of Vt., vol. i, pp. 357-38*6. 1861. 
Cambria. Vermont. Exact syns. Argillaceous slate of Dewey, Black and Taconic 
slate of Emmons, Hudson River or Lorraine of Hall, Primordial of Barrande, 
and Logan. 
Georgia slates, Marcou. Boston Soc. Nat. Hist., Proc, vol. viii, 1861-62, pp. 241, 
244. 1861. 
Vermont and Canada. Included in Upper Taconic of Marcou. 
Georgia slates. Perry. Boston Soc. Nat. Hist., Proc., vol. xi, 186d-68, p. 347. 1867. 

Vermont. 
(Georgia slates, Hitchcock. Am. Mus. Nat. Hist., Bull., vol. i, 1881-86, p. 179. 1884. 

Vermont and New Hampshire. 
Georgia, Walcott. U. S. (ieol. Surv., Bull. No. 30, p. 13. 1886. 

Cambrian. General. Included in Middle Cambrian. 
Georgia slate, Walcott. U. B. Geol. Surv., Bull. No. 81, pp. 98, 249, 278. 1891. 

Cambrian. Appalachian region. 
Georgia series. Ells. Can. Geol. Surv., new ser., vol. vii, pp. 53J^4J. 1896. 

Cambrian. Canada. 
Georgia formation, Marcou. Am. Geol.. vol. xix, pp. 39-43. 1897. 

Cambrian. 
Gering formation, Darton. U. S. Geol. Surv., 19th Ann. Rept, pt. iv, pp. 735, 
747-755. 1899. 
Tertiary. Nebraska. Included in Miocene. 
Geronimo series, Bain. Geol. Soc. Am., Bull., vol. xi, pp. 135, 140-141. 1900. 

Permian (?). Oklahoma. 
Geuda Salt Measures, Cragin. Colo. College Stud., vol. vi, pp. 3, 9-16. 1896. 

Permian. Kansas. Included in Big Blue series. 
Gila conglomerate, Gilbert. U. S. Geog. and Geol. Surv. w. of 100th meridian, 
vol. iii, pp. 540-541. 1875. 
Pleistocene. Arizona. 
Giles formation, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 176. 1894. 

Silurian. Virginia. Included in Helderberg and Oriskany. 
Giles, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Silurian. Virginia and West Virginia. 
Giles formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Foho No. 44* 
1897. 
Siluro-Devonian. Virginia and West Virginia. 
Gillespie formation. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., ptii, 
p. 221. 1898. 
Cretaceous. Texas. Included in Trinity division of ( 'omanche series. 



WEEKS.] GEODE GLEN ROSE. 173 

Gilmore eandstone, Stevenson. 2d Pa. Geol. Surv., Rept. K, pp. 38-39. 1876. 
Carboniferous. Pennsylvania. Included in Greene County group of Upper Barren 
Measures. 
Gilmore sandstone, White. U. S. Geol. Surv., Bull. No. 65, p. 31. 1891. 
Carboniferous. Pennsylvania and West Virginia. Included in Permo-Carbonif- 
erous, Dunkard Creek. ' 
Girard shale. White. 2d Pa. Geol. Surv., Rept. Q*, pp. 118-119. 1881. 

Devonian. Pennsylvania. 
Girard shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1367-1370. 1892. 

Devonian. Pennsylvania. Included in No. viii or Portage. 
Girardeau limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 40. 1894. 

Lower Silurian. Missouri. Included in Hudson River stage. 
Girardeau limestone, Wheeler. Mo. Geol. Surv., vol. xi, p. 41. 1896. 

Ordovician. Missouri. 
Glacian, Whitney and Wadsworth. Harvard Coll. Mus. Comp. Zool. Bull., vol. vii, 

1880-84, p. 562. 1884. Included in Azoic system. 
Glade limestone, Safford. Geol. of Tenn., pp. 262-263. 1869. 

Silurian. Tennessee. Included in Trenton or Lebanon. 
Glade limestone, Wetherby. Cin. Soc. Nat. Hist., Jour., vol. iii, no. ii, p. 147. 
1880. 
Trenton. Kentucky. 
Gladeville sandstone, Campbell. U. S. Geol. Surv., Bull. No. Ill, p. 33. 1893. 

Carboniferous. Virginia. Included in Coal Measures. Exact«yn. Mahoning, p. 99. 
Gladeyille sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 12. 1894. 
Carboniferous. Kentucky, Virginia, and Tennessee. 
Gladeville sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 59. 1899. 
Carboniferous. Virginia and Tennessee. 
Glass Mountain formation, Cragin. Am. Geol., vol. xix, p. 355. 1897. 
Permian. Kansas and Oklahoma. Included in Salt Fork division of Cimarron 
series. Includes Flowerpot shales and Cedar Hills sandstone. 
Glassboro gravel, Lewis. Phil. Acad. Nat. Sci., Proc, vol. xxxii, p. 297. 1880. 

Pennsylvania. Exact syn. Fossiliferous gravel. Part. syn. Pliocene. 
Glauconitic group, Harper. Miss. Geol. and Agric, Prelim. Rept., p» 72. 1857. 

Cretaceous. Mississippi. 
Glauconitic division. Hill. Texas Geol. Surv., 1st Ann. Rpt., p. 116. 1890. 

Cretaceous. Texas. Included in Black Prairie series. 
GlenBose, Hill. Geol. Soc. Am., Bull., vol. ii, p. 503. 1891. 

Cretaceous. Texas. Included in Trinity division. 
Glen Rose beds. Hill. Artesian Invest., Final Rept., Ex. Doc. 41, 52d Cong., Istsess., 
pt. iii, p. 83. 1892. 
Cretaceous. Southwest. Included in Trinity division. 
Glen Rose bed, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 289-292, 336-338. 1892. 

Cretaceous. Texas. Included in Bosque division of Lower Cretaceous. 
Glen Rose, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Texas. Included in Trinity division. 
Glen Rose stage, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 378. 1895. 

Cretaceous. Texas. Included in Lower Cretaceous. 
Glen Rose formation. Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
pp. 221-226. 1898. 
Cretaceous. Texas. Included in Trinity division of Comanche series. 
Glen Rose formation. Hill and Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 42. 1898. 
Cretaceous. Texas. Included in Comanche series. 



174 NORTH AMEBIOAW GEOLOGIC FORMATION NAMES. [buu-isi. 

Glen Boee funnation, Vai^ban. U.S.Geol.Surv.,Geol. Atlae of U.S., Folio No. S4. 
1000. 

CreUceoui. TenM. Included in CoDMUiche Beriea. 
OUncoe marble, Worthen. E4:un. Geol. of III., vol. iii, p. 2M. 1882. 

Silurian. Illinois. iDcluded in Trenton KTonp. Exact syn. Galena limeatone. 
Glem Palla bla«k marble, Hopkine. Ark. Geol. Snrv., 1890, vol. iv, p. 51. 1890. 

Silurian. ArkansaH. 
Oodiva limextone. Tower and Smith. U. S. Geol. Surv., 19th Ann. ttepL, pt iii, 
p. 624. 1899. 

Carboniferous. Utah. 
Godiva limestone, Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. A5. 
1900. 

Carboniferous. Utah. 
Oolconda clay, Cox. Ind. Geol. Surv., 6tb Ann. Rept, 1874, p. 13. 1875. Inditmi. 
Golden Gate series, Fairbanks. Jour, of Geol., vol. iii, pp. 416-428. 1895. 

Jurassic or Cretaceous. California. 
Golden Gate series, Fairbanks. Jour, of Geol., vol. v, pp. 70'-76. 1897. 

Pre-Cretaceous. California. Exact eyn. Frandacan series. 
Golden Gate series, Fairbanks. Jour, of Geol., vol. vi, pp. 656-559. 1«98. 

Juratrias. California. 
Golden Gate formation. Turner. Jour, of Geol., vol. vi, pp. 488-493. 1898. 

Cretaceous, California. Exact syn. Franciscan formation. 
Golden Wall sandstone, Powell. U. S. Geol. and Geog. Surv., Geol. of Uinta Mts., 
pp. 40, 48, 155. 1876. 

Cretaceous. Utah. Included in Point of Rocks. 
Qooiatite limestone, Meek and Worthen. Am. Jonr. Sci., 2d 8er.,vol. xisii, pp. 
167-177. 1861, 

Carboniferous. Indiana. Exact syn. Rockford Goniatite bed. 
Goniatite formation, Cbapaian, A Popular and Practical Expoution of the Minerale 
and Geology of Canada, p. 195. 1864. 

Devonian. Canada. Exact syn. Lamblon formation. 
Goniatite shale, Cox. Ind. Geol. Surv., 6th Ann. Kept., 1874, p. 11. 1875. 

Carboniferous. Indiana. 
Goniatite limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 56. 1890. 

Carboniferous. Arkansas. Included in Kinderhook. 
Ooodland limestone, Hill. Geol. Soc. Am., Bull., vol. ii, pp. 502, 514. 1891. 

Cretaceous. Texas. Included in Fredericksburg division. 
Goodland limestone. Hill. Geol. Soc. Am., Bull., vol. v, pp. 297, 303. 1894. 

~ Ini-Iuded in Comanche Pcipk beds, Fredericksbunr division. 

Texas Geol. Surv., 4th Ann. Rept, pp. 201-203. 



Am. Geol., vol. XV, p. 395. 1895. 
Exact syn. Palo Duro. 

, Geol. Soc. Am., Bull., vol. ix, p. 406. 1898, 
Included in Pliocene. 
I'an Hise and Bayley. U. S. Geol. Surv., 15th Ann. Rept, 

uperior region. Included in Upper Marquette series, Ishpem- 

oyth. U. S. Geol. Surv. Mon., vol. xxviii, pp. 535-537. 1897. 
an. Included in Upper Marquette series. 



WEEKS] GLEN ROSE GRAND GULF. •ITS 

^ 

Goodrich quartzite, Van Hise. U. S. Geol. Surv. , Mon. , vol. xxviii, pp. 409-416. 1897. 

Algonkian. Michigan. Included in Ishpeming formation of Upper Marquette 
series. 
Goose Fond limestones, Emerson. U. S. Greol. Surv., Bull., No. 159, p. 51. 1899. 

Pre-Cambrian. Massachusetts. 
Goslien schist, Emerson. U. S. Geol. Surv. , Geol. Atlas of U. S. , Hawley sheet. 1892. 

Silurian. Massachusetts. 
Goshen schists, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 

Ordovicjan (?) . Massachusetts. 
Goshen schist, Emerson. U. S. Greol. Surv., Mon., vol. xxix, pp. 177-182. 1898. 

Silurian. Massachusetts. 
Goshen schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 1898. 

Silurian. Massachusetts. 
Ck)wer stage, Norton. Iowa Geol. Surv., vol. ix, p. 423. 1899. 

Silurian. Iowa. Includes Le Claire stone and Animosa stone. 
Grainger shale, Campbell. U. S. Geol. Surv., Bull., No. Ill, p. 38. 1893. 

Devonian (?). Virginia. 
Grainger shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., FoUo No. 12. 1894. 

Devonian. Kentucky, Virginia, and Tennessee. 
Grainger shale, Keith. Wash. Phil. Soc, Bull., vol. xii, pp. 78, 79. 1895. 

Devonian. Tennessee. 
Grainger shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25, 27. 
1895, 1896. 

Devonian. Tennessee and North Carolina. 
Grainger formation, Campbell. U. S. Geol. Surv. Geol. Atlas of U. S., Folio No. 59. 
1899. • 

Devonian-Carboniferous. Virginia and Tennessee. 
Qranbytnff, Emerson. Geol. Soc. Am., Bull., vol. ii, p. 452. 1891. 

Trias. Massachusetts. 
Granby tuff, Emerson. Geol. Soc. Am., Bull., vol. viii, p. 59. 1897. 

Trias. Massachusetts. 
Granby tuff, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 369, 476-479. 1898. 

Juratrias. Massachusetts. Included in Connecticut River sandstone. 
Granby tuff, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 1898. 

Juratrias. Massachusetts. 
Grand Canyon, Powell. U. S. Geog. and Geol. Surv., Geol. of Unita Mts., pp. 43, 
61. 1876. 

Utah. 
Grand Canyon group, Walcott. Am. Jour. Sci., vol. xxvi, pp. 440-441. 1883. 

Cambrian. Grand Canyon. Included in Lower Carboniferous. 
Grand Canyon sandstone, Walcott. Geol. Soc. Am., Bull., vol. i, p. 50. 1889. 

Algonkian. Arizona. 
Grand Canyon series, Walcott. U. S. Geol. Surv., 14th Ann. Kept., pt. ii, p. 519. 
1894. 

Algonkian. Grand Canyon of Colorado. Includes Chuarand Unkar. Exact syn. 
Keweenawan series(?). 
Grand Canyon series, Walcott. Jour, of Geol., vol. iii, pp. 316-317, 319-324. 1895. 

Algonkian. Grand Canyon region. Includes Chuar and Unkar. 
Grand Canyon group, Crosby. Geol. Soc. Am., Bull., vol. x, p. 158. 1899. 

Algonkian. Colorado. 
Grand Canyon series, Walcott. Greol. Soc. Am., Bull., vol. x, p. 215. 1899. 

Algonkian. Arizona. 
Grand Gulf sandstone, Waites. Agric. and Geol. of Miss., pp. 216-219. 1857. 

Tertiary. Mississippi. Included in Oligocene. 



176 • NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Grand Gulf group, Hilgard. Rept. on Geol. and Agric. Miss., pp. 147-154. 1860. 

Tertiary. Mississippi. Included in Oligocene. 
Grand Gulf group, Hilgard. Am. Jour. Sci., 2d ser., vol. xliii, p. 39. 1867. 

Tertiary. Alabama and Mississippi. 
Grand Gulf group, Hilgard. Am. Jour. Sci., 2d ser., vol. xlviii, p. 337. 1869. 

Tertiary. Louisiana. 
Grand Gulf series, Hilgard. Am. Jour. Sci., 3d ser., vol. ii, pp. 396-398. 1871. 

Neocene. Gulf region. 
Grand Gulf, Hilgard. Am. Assoc. Adv. Sci., Proc., vol. xx, p. 230. .1871. 

Tertiary. Gulf States. 
Grand Gulf group, Hilgard. Am. Jour. Sci., 3d ser., vol. xxii, pp. 59-65. 1881. 

Tertiary. Gulf of Mexico. 
Grand Gulf group, Hilgard. Smithsonian Contrib., vol. xxiii, No. ii, p. 3. 1881. 

Tertiary. Mississippi. 
Grand Gulf, lieilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 138, 150-151. 1884. 

Tertiary. Louisiana and Mississippi. Included in Neocene (?). 
Grand Gulf, Meyer. Am. Jour. Sci., 3d ser., vol. xxxii, pp. 20-25. 1886. 

Tertiary. Mississippi. 
Grand Gulf, Meyer. Am. Geol., vol. ii, p. 88. 1888. 

Tertiary. Gulf States. 
Grand Gulf formation, Johnson. Am. Jour. Sci. , 3d ser. , vol. xxxviii, pp. 213-216, 
1889. 

Tertiary. Gulf States. 
Grand Gulf formation, McGee. U. S. Geol. Surv. , 12th Ann. Rept. , pt. i, p. 408. 1891. 

Tertiary. Atlantic Coastal Plain. 
Grand Gulf group, Dall? Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Miocene. Gulf States. Included in Chesapeake Epoch. Includes Grand Gulf 
beds, Altamaha grit, etc. 
Grand Gulf, Ball and Harris. U. S. Geol. Surv., Bull. No. 84, pp. 159, 161, 167, 
172. 1892. 

Tertiary. Gulf States. 
Grand Gulf formation, Dall. Science, vol. xx, p. 164. 1892. 

Tertiary. 
Grand Gulf, Smith. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 295-296. 1894. 

Tertiary. Alabama. Included in Miocene. 
Grand Gulf, Smith, Johnson, and Langdon. Ala. Geol. Surv.,' Geol. of Costal Plain 
of Ala., p. 97. 1894. 

Tertiary. Alabama. Included in Miocene. Part. syns. .Chipola Miocene, Chatta- 
hoochee Miocene. 
Grand Gulf group, Vaughan. Am. Geol., vol. xv, p. 225. 1895. 

Tertiary. Louisiana. Included in Miocene. 
Grand Gulf, Vaughan. U. S. Geol. Surv., Bull. No. 142, p. 24. 1896. 

Tertiary. Louisiana. Included in Oligocene. Exact syn. Upper Oligocene. 
Grand Gulf, Harris and Veatch. La. State Exp. Sta., pt. v, p. 94. 1899. 

Tertiary. Louisiana. Included in Oligocene. 
Grand Portage graywacke, Winchell. Minn. Geol. and Nat. Hist. Surv., Final 
Rept, vol. iv, p. 510. 1899. 

Cambrian. Minnesota. Included in Animikie. . 
Orand Prairie formation, Hill. Am. Jour. Sci., 3d ser., vol. xxxviii, p. 470. 1889. 

Cretaceous. Texas. Included in Comanche series. Includes Grand Prairie and 
Upper Cross Timbers formation. 
Grand Rapids sandstone, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., 
p. 24. 1890. 

Silurian. Ohio. Exact syn. Monclova or Holland sandstone. 



WEEKS.] GRAND GULF GRAY. 177 

Grand Rapids group, Lane. Mich. Geol. Surv., Rept. State Board, 1891-92, p. 66. 
1893. 

Sub-Carboniferous. Michigan. 
Grand Rapids sandstone, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 29D, 
55D-58D. 1893. 

Cretaceous. Canada. Included in Colorado group. 
Grand Rapids group. Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 10. 1895. 

Michigan. 
Grand Biver zone, Gallaher. Mo. Geol. Surv., Bien. Rept., p. 56. 1898. 

Upper Carboniferous. Missouri. Included in Upper Coal Measures. 
Grand Tower limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 42. 1894. 

Devonian. Missouri. Included in Hamilton stage. 
Grand Tower formation, Keyes. Mo. Greol. Surv., vol. viii, p. 339. 1895. 

Devonian. Missouri. Included in Hamilton. 
Grand Tower limestone, Wheeler. Mo. Geol. Surv., vol. xi, p. 41. 1896. 

Silurian. Missouri. Part. Onondaga and Oriskany. 
Grandad limestone, Borden. Ind. Geol. Surv., 5th Ann. Rept., 1873, p. 138. 1874. 

Indiana. 
Graneros formation, Gilbert. U. S. Geol. Surv., 17th Ann. Rept, pt. ii, p. 564. 
1896. 

Cretaceous. Colorado. Included in Benton group. 
Graneros shale, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 1897. 

Cretaceous. Colorado. Included in Benton formation. 
Graneros shale. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 58. 1899. 

Cretaceous. Colorado. 
Graneros shale. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Cretaceous. Colorado. 
Granular quartz, Emmons. Agric. of N. Y., vol. i, pp. 83-86. 1846. 

New York and New England. Included in Taconic system. 
Granular quartz, Winchell. Am. Geol., vol. i, pp. 173-178. 1888. 
Granular quartz, Walcott. U. 8. Geol. Surv., Bull. No. 81, pp. 91, 250, 275. 1891. 

Cambrian. Appalachian region. 
Granville beds. Hicks. Am. Jour. Sci., 3d ser., vol. xvi, pp. 216-219. 1878. 

Carboniferous. Ohio. Included in Waverly group. 
Granville serpentines, Emerson. U. S. Geol. Surv., Mon., vol. xxix, p. 90. 1898. 

Silurian. Massachusetts. Included in Chester amphibolites. 
Orape Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 427. 1893. 

Carboniferous. Texas. Included in Albanv division. 
Grassmere stage, Sherzer. Mich. Geol. Surv., vol. vii, pt. i, pp. 141-142. 1900. 

Pleistocene. Michigan. 
Grassy Creek shales, Keyes. Iowa Acad. Sci., Proc, vol. v, p. 63. 1898. 

Devonian. Iowa. 
Gravel beds, Loughridge. Ky. Geol. Surv., Jackson Purchase region, pp. 57-72. 
1888. 

Quaternary. Kentucky. Includes Stratified drift. Gravel conglomerate. Ore 
R^on gravel, Tennessee River gravel. 
Gray sandstone, Emmons. Geol. of N. Y., pt. ii, pp. 123-126, 406. 1842. 

Pftleozoic. New York. Included in New York Transition system, Champlain 
group. 
Gray sandstone of Oswego, Vanuxem. Geol. of N. Y., pt. iii, pp. 67-70. 1842. 

Paleozoic. New York. Includes No. iv, Pennsylvania Survey. 
Gray sandstone, Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18 and 31. 1843. 

Paleozoic. New York. Included in New York system. 

Bull. 191—02 12 



178 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.l9L 

Gray limesUme, Daniels. Wis. Geol. 8urv., Kept. 1853, p. 14. 1854. 

Silurian. Wisconsin. 
Gray limestone and shales, Safford. Am. Jour. S»oi., 2d ser. vol. xxxi, p. 207. 1861. 

Silurian. Tennessee. Included in Niagara, Upper part, 
(iray sandstone. Miller. Cin. Hoc. Nat. Hist., Jour., vol. iv, no. iv, p. 288. 1881. 

Silurian. Included in Medina group. 
Gray clays, Lerch. La. Exp. Sta., Geol. and Agric, pt. i, p. 21. 1892. 

Eocene. Louisiana. Exact syn. Arcadia clays. 
Gray Cliflf group, Gilbert. U. S. Geog. and Geol. Surv.,Rept. on Henry Mts., p. 6. 
1877. 

Juratrias. l^tah. 
Qraydon sandstone, Shejmrd. Mo. Geol. Surv., vol. xii, pp. 49, 124-141. 1898. 

Upper Carboniferous. Missouri. Included in Cherokee stage. 
Graydon Springs sandstone and conglomerate, Keyes. Mo. Geol. Surv. , vol. vii, pt ii, 
pp. 422-425. 1894. 

Upper Carboniferous. Missouri. Included in Coal Measures. 
Grayson marls, Cragin. Colo. College Stud., vol. v, pp. 43-48. 1894. 

Cretaceous. Texaa. 
Graysonton formation, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 175. 1894. 

Cambrian. Virginia. 
Great conglomerate, Fontaine. Am. Jour. S<*i., 3d ser., vol. vii, pp. 459-465, 573- 
579. 1874. 

Carboniferous. West Virginia. 
Great limestone, Stevenson. 2d Pa. Geol. Surv., Rept. K^, pp. 37-40. 1877. 

Carboniferous. Pennsylvania. Included in Upper Productive series. 
Great limestone, White. U. S. Geol. Surv., Bull., No. 65, p. 59. 1891. 

Carboniferous. Pennsylvania, West Virginia. Included in Upper Coal Measures, 
Monongahela River series. Includes Uniontown limestone, Upper division. 
Great Bend limestone, White. 2d Pa. Geol. Surv., Rept. G*, p. 91. 1881. 

Devonian. Pennsylvania. 
Great Carolina (marl) bed, Ruffin. South Car. Agric. Surv., 1843, p. 7. 1843. 

Tertiary. South Carolina. Included in Upper Cretaceous or Lower Eocene. 
Great Falls coal series, Newberry. School of Mines Quart., vol. viii, p. 328. 1887. 

Lower Cretaceous. Exact syns. Kome beds of Greenland, Kootenie of Canada. 
Great Falls group, Newberry. Am. Jour. Sci., 3d ser., vol. xli, p. 193. 1891. 

Cretaceous. Montana. Exact syns. Kootenie group of Canada, Kome group of 
Greenland and Potomac group. 
Great Falls formation, Weed. Geol. Soc. Am., Bull., vol. iii, p. 305. 1892. 
• Cretaceous. Montana. 
Green Mountain beds. Cannon. Colo. Sci. Soc, Proc., vol. iv, p. 253. 1892. 

Post Laramie. Colorado. Exact svn. Denver beds. 
Green Pond Mountain group, Merrill. N. Y. Acad. Sci., Trans., vol. vi, p. 59. 
1887. 

Devonian. New Jersey. 
Green Pond conglomerate, Darton. Geol. Soc. Am., Bull., vol. viii, pp. 367, 383. 
1894. 

Upper Silurian. New York and New Jersey. Included in Oneida (?). Medina. 
Green River group, Hayden. U. S. Geol. Surv. of Wyoming, pp. 58, 70, 142. 1871. 

Tertiary. Western Interior region. 
Green River group, Comstock. Am. Jour. Sci., 3d ser., vol. vi, pp. 427-428. 1873. 

Eocene. Wyoming. 
Green River, Peale. U. S. (ieol. and Geog. Surv., of Terr., 8th Ann. Rept., pp. 147, 
156-158. 1876. 

Tertiary. Rocky Mountains. 



WEEKS.] GBAY GREENBRIER. 179 

Green River, Upper, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., 
pp. 40, 45, 167. 1876. 
^Tertiary. Utah. Includes Plant beds, Tower sandstone. 
Green River, Lower, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mts., 
pp. 40, 45, 166. 1876. 
Tertiary. Utah. 
Green River, Emmons. U. S. Geol. Explor. of 40th Parallel, vol. ii, pp. 203, 240. 
1877. 
Tertiary. Utah. 
Green River, Peale. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept, p. 184. 
1878. . 
Tertiary. Colorado. 
Green River, King. U. S. Geol. Explor. of 40th Parallel, vol. i, p. 377. 1878. 

Tertiary. Wyoming and Utah. Included in Eocene. 
Green River, White. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 19, 
20, 22, 35. 1878. 
Tertiary. Utah and Colorado. 
Green River, Endlich. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., 
pp. 82, 111, 123. 1878. 
Tertiary. Colorado. Included in Miocene. 
Green River, Endlich. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., 
p. 130. 1879. 
Tertiary. Wyoming. 
Green River, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 525, 
635, 637. 1879. 
Tertiary. Wyoming. 
Green River group, Lesquereiix. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. viii, 
pp. 127-134. 1883. 
Tertiary. 
Green River, Clark. U. S. Geol. Surv., Bull. No. 83, p. 140. 1891. 

Tertiary. Interior region. Included in Eocene. Includes Manti beds. 
Green River, Peterson. Am. Mus. Nat. Hist., Bull., vol. v., p. 73. 1895. 

Tertiary. Utah. 
Green River shales, Osborn. Am. Mus. Nat. Hist., Bull., vol. vii, 1895, p. 73. 1895. 

Eocene. Included in Upper Eocene. 
Greenbrier limestone. White. Geol. Soc. Am. Bull., vol. iii, p. 190. 1892. 

Lower Carboniferous. West Virginia. 
Greenbrier limestone, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 32. 
1896. 
Carboniferous. Virginia and West Virginia. Part syns. No. xi and Urabral. 
Greenbrier limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 26. 1896. 
Carboniferous. Virginia and West Virginia. 
Greenbrier limestone, Taff and Brooks. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 34. 1896. 
Carboniferous. West Virginia. 
Greenbrier limestone, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 28. 1896. 
Carboniferous. West Virginia and Maryland. 
Greenbrier formation, Clark. Md. Geol. Surv., vol. i, pp. 156, 185. 1897. 

Carboniferous. Maryland. 
Greenbrier limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 
Carboniferous. Virginia and West Virginia. Part. syn. No. xi. 



180 NORTH AMERICAN aEOLOQIC FORMATION NAMES. (boluWI- 

Greenbrier, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Carbonifprouei. Marylatid. Included in Carboniferous. 
Greenbrier, Clark. Md. Oeol, Surv., vol. iii, pp. 97, 9S. 1899. 

C'arlioniferouB. Maryland. 
Greenbrier limeftone, Darton. U. H. Geol. 8urv., Geol. Atlas of U. S., Polio No. 61. 
1899. 

Carboniferoug. Virginia and West Virginia. 
Greenbrier formation, O'Harra. Md. Geol. Surv., All^wiy County, p. 110. 1900. 

Carl ton iterouH Maryland. 
Greene County group, SleveuBon. 2d Pa. Geol. Surv., Rept. K, pp. 35-44. 1876. 

Carbon iferoup. Pennsylvania. Included in Upper Barren Measures. 
Greene Co. group, H'lnvilllerti. 2d Pa. Geol. Surv., Ann. Rept., 1886, pp. 59-60. 
I«87. 

CarlH)niff>rouH. Penmiylvania. Included in Upper Barren Measures. 
Oreenlioni formation, Gilbert. V. S. Geol. Surv., 17th Ann. Kept., pt. ii, p. 564. 

tms. 

Cretaceous. Colorado. Includeil in Benton group. 
Greenhorn limestone, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 
Cretareoue. Colorado. Included In Benton formation. 
Greenhorn limestone, Hill. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 58. 
1899. 
Cretarcouf. Colorado, 
(ireenhorn limeet^me. Hills. U. S. (Jeol. Surv., Geol, Atlas of U. S., Folio No. 68. 
IWO. 
Cretaoeous. Colorado. 
' Oreenleaf sandRtone, Gould. Am. Jour. Si;i., 4th ser., vol. v, pp. 170-174. 1098. 
Cretaeeous. Kannas. Iiic-luded in Medicine bede. 
Greensaud forniHtlnn, Hotrers. N. J. Geol. Surv., Final RepL, pp. 186-216. 1840. 

Greenland, Winchell. Am. Assoc. Adv. Sci., Proc.vol. x, p. 86. 1856. 

Tertiary. Alabama. In<'laded in Upper Kocene. 
Greenland, Saffonl. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 364-366. 1864. 

Cretaceous. Tennetwee. Exact syn. Rotten limestone. 
GreeuKand or Shell l>ed, Sattord. (Jeol. of Tennes^pee, pp. 414-H7. 1869. 

Cretatreouii. Tennessee. Kxact syn. Rotten limestone of Alabama and Mbeissippi. 
Oreetiaburi: stone. Cox. Ind. Geol. Surv., 8th, 9th, and 10th Ann. Repta., 1876, 
1877, 1878, p. 89. 1879. 

Indiana. 
Greenstone si;hist, Williams. U. S. Geol. Surv., Bull. No. 62. 1890. 

Michitfan. 
Greenstone schists. Brooks. U. S. (ieol. Surv., 20th Ann. Rept., pt vii, pp. 470-479. 
1900. 

enhall. U. S. Geol. Surv., 20th Ann. Rept, pt. vii, pp. 



ercival. Rept. on Geol, of Conn., 1842, p. 49. 1842. 

Itevenson. N. Y. Acad, Sci., Trans., vol. xv, p. 51. 1896. 
sas and Indian Territory. Included io Sebastian stt^e. 
Dall. U. S. Geol. Sun,., 18th Ann. Kept., pt. ii, p. 340. 

Included in Eocene. 



WEEKS.] GREENBRIER GROVEL AND. 181 

Grenville group, Selwyn. Can. Geol. Surv., Rept. 1877-78, p. lOA. 1879. 

Archean. Canada. 
Grenville series, Adams. Jour, of Geol., vol. i, pp. 328-332. 1893. 

Algonkian. Canada. 
Grenville series, Adams. Can. Geol. Surv., new ser., vol. vi, p. 4J. 1895. 

Archean. Canada. Included in Laurent ian. 
Grenville series, Adams. Can. Geol. Surv., new ser., vol. viii, pp. 11J-28J. 1897. 

Archean. Canada. Included in Laurentian. 
Grenville series, Adams and Barlow. Geol. Soc. Am., Bull., vol. viii, pp. 398, 402. 
1897. 

Algonkian. Ontario. 
Grenville series, Adams, Barlow, and Ells. Can. Rec. Sci., vol. vii, pp. 304-313. 
1897. 

Algonkian. Canada. 
Grenville series. Barlow. Can. Geol. Surv., new ser., vol. x, pp. 871-901. 1898. 

Canada. 
Grey lock group, Hobbs. Geol. Soc. Am., Bull., vol. iii, p. 460. 1892. 

Archean. Massachusetts. 
Greylock schist^ Pumpelly, Wolff, and Dale. U. S. Geol. Surv., Mon., vol. xxiii, 
pp. 20, 180, 186. 1894. 

Silurian. Massachusetts. 
Greyson shale, Walcott. Geol. Soc. Am. Bull., vol. x, pp. 199, 206. 1899. 

Algonkian, Pre-Cambrian. Montana. Included in Belt terrane. 
(ireyson shale. Weed. U. S. Geol. Surv., 20th Ann. Rept, pt. iii, p. 282. 1900. 

Algonkian. Montana. Included in Belt terrane. 
Griswold Gap conglomerate, White. 2d Pa. Geol. Surv., Rept. G*^, p. 57. 1881. 

Carboniferous. Pennsylvania. Included in Pocono. 
Griswold Gap conglomerate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, 
pp. 1643, 1647. V 1895. 

Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Gritstone beds, Broadhead. Mo. Geol. Surv., Rept,, 1873-74, p. 357. 1874. 

Silurian. Missouri. Included in Primordial Potsdam. 
Grizzly quartzite, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Silurian ( ? ) . California. 
Grizzly formation, Turner. U.S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 445. 1894. 

Silurian. California. 
Grizzly, Turner. Am. Geol., vol. xiii, p. 229. 1894. 

California. 
Grizzly, Diller. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 15. 1895. 

Silurian. California. 
Ground Ice formation, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 260. 
1892. 

Pleistocene. Alaska. 
Ground Ice formation, Dall. U. S. Geol. Surv., 17th Ann. Rept., pt. i, p. 850. 1896. 

Pleistocene. Alaska. 
Ground Ice formation, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 335. 1898. 

Pleistocene. Alaska. 
Groveland formation, Smyth. U. S. Geol. Surv., Mon., vol. xxxvi, pp. 415-422, 
446-450. 1899. 

Michigan. 
Groveland formation, Clements and Smyth. U. S. Geol. Surv., 19th Ann. Rept., 
pt. iii, pp. 115, 137. 1899. 

Algonkian. Michigan. 



182 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Groveland formation, Van Hise. U. S. Geol. Surv., 19th Ann. Kept., pt. iii, p. 16. 
1899. 

Algonkian. Michigan. Included in Lower Huronian. Exact syn. Negaunee iron 
formation. 
Guallava sandstone, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 342. 1898. 

Tertiary. Costa Rica. Included in Vicksburgian stage, Oligocene. 
Chielph formation, Logan. Can. Geol. Surv., 1843-63, pp. 298-344. 1863. 

Middle Silurian. Canada ( Eastern ) . 
Guelph formation. Chapman. Can. Inst., new ser., vol. viii, pp. 215-216. 1863. 

Silurian. Canada. Included in Middle Silurian, Niagara group. 
Guelph formation, Bell. Can. Geol. Surv., Repts., 1863-1866, pp. 176-177. 1866. 

Middle Silurian. Canada. 
Guelph, Hall. Regents, Univ. of N. Y., 20th Ann. Rept, pp. 305-308. 1867. 

Silurian. Canada. Included in Niagara. Exact syns. Le Claire limestone (Iowa), 
Racine limestone (Wis.). 
Guelph beds, Chamberlin. Geol. of Wis., vol. ii, pp. 377-380. 1877. 

Up|)er Silurian. Wisconsin. Included in Niagara. 
Guelph, Lindemuth. Ohio Geol. Surv., vol. iii, p. 512. 1878. 

Silurian. Ohio. Included in Niagara. 
Guelph formation. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 277,292. 

1881. 
Guelph beds, Chamberlin. Geol. of Wis., vol. i, p. 188. 1883. 

Silurian. Wisconsin. Included in Niagara. 
Guelph group. Miller. N. A. Geol. and Pal., p. 53. 1889. 
Guelph Hmestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. Included in Niagara. 
Guelph, Brumell. Geol. Soc. Am., Bull., vol. iv, pp. 227,231. 1893. 

Silurian. Ontario. 
Guelph formation. Bell. Geol. Soc. Am., Bull., vol. vi, p. 300, pi. xv. 1895. 

Cambrian? Ontaria, Canada. 
Guelph formation, Ashley. Ind. Dept. Geol. and Nat. Resources, 23d Ann. Rept., 
1898, p. 78. 1899. 

Silurian. Indiana. 
Guertie sand, Taff. U. S. Geol. Surv., 18th Ann. Rept, pt. iii, p. 439. 1899. 

Recent(?). Indiana Territory. 
Gulf series. Hill. Am. Jour. Sci., 3d ser., vol. xxxiii, p. 298. 1887. 

Cretaceous. Texas. Includes Navarro beds, Exogyra ponderosa marl, Dallas 
limestone, Eagle Ford shales, and Timber Creek group. 
Gulf series, Hill and Vaughan. U. S. Geol. Surv., 18th Ann. Rept, pt ii, pp. 238- 
243. 1898. 

Cretaceous. Texas. Includes Webberville, Eagle Pass, Taylor, Anacacho, Austin 
chalk, and Eagle Ford formations. Exact syn. Upper Cretaceous. 
Gulf series, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio. No. 64. 1900. 

Cretaceous. Texas. Includes Eagle Ford, Austin chalk, Anacacho, and Pulliain 
formations. 
Gunnison, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 1894. 

Juratrias. Colorado. Exact syn. Atlantosaurus beds. 
Gunnison formation, Spurr. U. S. Geol. Surv., Mon., vol. xxxi, pp. 39-41. 1898. 

Juratrias. Colorado. Included in Triassic. 
Gunnison formation. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 57. 
1899. 

Juratrias. Colorado. Includes McElmo formation and La Plata sandstone. 
Gwynedd shale, Lyman. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. ii, pp. 2610- 
2612. 1895. 

Juratrias. Pennsylvania. Included in New Red. 



k 

k 



WEEKS.] GROVELAND HAMILTON. 183 

Gypstun formation, Newberry. Eng. Dept., U. 8. A., Macomb's Expedition from 
Santa Fe to junction of Grand and Green rivers, p. 21. 1876. 
Kansas. 
Gypsum series, Peale. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 74. 
1877. 
Carboniferous. Colorado. Included in Permian and Permo-Carboniferous. 
Gyroceras beds, Calvin. Am. Geol., vol. viii, p. 142. 1891. 

Devonian. Iowa. 
Gyroceras beds, Udden. Cin. Soc. Nat. Hist., Jour., vol. xix, no. iii, p. 93. 1897. 

Devonian. Illinois. 
Hackberry shale, McGee. U. 8. Geol. Surv., Uth Ann. Kept., pt. i, p. 314. 1891. 

Devonian. Iowa. 
Hackberry shales, Keyes. Iowa Geol. Surv., vol. i, p. 39. 18 

Devonian. Iowa. 
Halyxnenites sandstone, Stevenson. Chief of Engineers, Rept., 1879, pt. iii, p. 2257. 
1879. 
Cretaceous. New Mexico. Included in Laramie. 
Halymenite sandstone, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., vol. 
iii, Suppl. p. 195. 1881. 
Cretaceous. New Mexico. 
Halysites beds, McConnell. Can. Geol. Surv., new ser., vol. ii, pp. 15D, 21D-22D. 
1887. 
Silurian. Canada. 
Hamburg shale, Hague. U. S. Geol. Surv., 3d Ann. Rept., pp. 253, 255-256, 259. 
1883. 
Cambrian. Nevada. 
Hamburg, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 246, 315. 1891. 

Cambrian. Nevada. Included in Upper Cambrian. 
Hamburg, Hague. U. S. Geol. Surv., Mon., vol. xx, p. 39. 1892. 

Cambrian. Nevada. 
Hamburg shale, Walcott. U. S. Nat. Mus., Proc, vol. xxi, p. 401. 1898. 

Cambrian? Wyoming. 
Hamburg Mountain gneiss, Wolff and Brooks. U. S. Geol. Surv., 18th Ann. Rept., 
pt. ii, p. 439. 1898. 
Pre-Cambrian. New Jersey. 
Hamilton group, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., p. 380. 1840. 

Devonian. New York. 
Hamilton group, Vanuxem. Geol. of New York, pt. iii, pp. 150-163. 1842. 
Paleozoic. New York. Included in New York system. Includes Skaneateles 
shale, Ludlowville shale, Encrinal limestone, Moscow shale, Cazenovia group. 
Hamilton group. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 184-195. 1843. 
Paleozoic. New York. Included in New York system. Includes Pyritiferous 
rock and 3d gray wacke of Eaton. Ludlowville, Moscow, and Skaneateles shales, 
Cazenovia group, Encrinal limestone. Part syn. No. viii, Pennsylvania 
Survey. 
Hamilton shale, Emmons. Agric. of N. Y., vol. i, pp. 183-186. 1846. 

New York. Included in Erie division of New York system. 
Hamilton shales, Emmons. Agric. of N. Y., vol. i, pp. 183-186. 1846. 

Devonian. New York. Included in Erie division of New York system. 
Hamilton group, Owen. Am. Jour. Sci., 2d ser., vol. iii, p. 59. 1847. 
Devonian. New York. Included in Erie division of New York system. Part, 
syn. Part of No. 8, Pennsylvania Survey. 
Hamilton, Whittlesey. Am. Assoc. Adv. Sci., Proc., vol. v, p. 207. 1851. 
Devonian. Ohio. 



184 HOBTH AMEBIOAN GEOLOGIC FORMATION NAMES. (»uu.l»L 

Hamiltoo, Swallow. Mo. Geol. Surv., let and 2d Ann. Repte., pp. 106, 177. 1955. 

Devonian. Miaeouri. 
Hamilton group, Hall, Iowa Geol. Surv., vol. i, p. 86. 1858. 

Devonian. Iowa. 
Hamilton group, Whitney. Iowa Geol. Surv., vol. i, p. 370. 1S5S. 

Devonian. Iowa. 
Hamilton group, Whitney. Iowa Geol, Surv,, vol. i, pt i, pp. 370-376. 1858. 

Devonian. Iowa. 
Hamilton group, Hall. Iowa Geol. Surv., vol. i, pt i, pp. 85-88. 1858. 

Devonian. Iowa. 
Hamillon group. Hall and Whitney. Am. Jour. Sci., 2d Ber., vol. xxvii, p. 112. 1859. 

Devonian. Iowa. 
Hamilton group, Meek and Engelman. Phil. Acad. Nat. Sci., Proc., vol. lii, p. 127. 
1860, 

Devonian. Nevada, 
Hamilton fonnation, Chapman. Can, Inst., new 8er.,vol. viii, pp. 444-449, 1^, 

Devonian. Canada, 
Hamilton formation. Ix^n. Can. Geol. Surv., Kept. 1843-1863, pp. 380-387. 1863. 

Devonian. Canada, Included in Upper Devonian, 
Hamilton group, Dawson, Am. Jour. Sci., 2d ser., vol. xxxv, pp. 314-31B. 1863, 

Devonian. Canaila. 
Hamilton shale, Hunt. Am. Jour. Sci., 2d aer., vol. slvi, pp. 357-362. 1868. 

Devonian, Canada. Includes Marcellus shale. 
Hamilton limestone and shale, Worthen. III. Geol. Surv., vol. ill, pp. 40, 63-64, 
116, 1868. 

Devonian. Itlinoie. 
Hamilton group. White, Iowa Geol. Surv., vol. iv, pp. 184-188. 1870. 

Devonian. Iowa. Includes Hamilton limestones and shales. 
Hamilton limestone, Worthen. 111. Geol. Sun-., vol. iv, p. 8. 1870. 

Devonian. Illinois. 
Hamilton group, Sluimard. Mo. Geol. Surv., Kept. 1855-1871, p. 296. 1873. 

Devonian. Missouri, 
Hamilton, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 68, 149. 1873. 

Devonian. Ohio. 
Hamilton, Winchell. Am. Abhoc Adv. Sd., Proc., vol. xxii, p. 103. 1873, 

Devonian, Ohio, 
Hamilton, Hall, Albany Inst., Proc., vol. i, pp. 132-133. 1873. 

I. HI. Geol. Surv., vol. v, pp. 222-223. 1873. 

[II. Geol. Surv., vol. v, pp. 227-228. 1873. 

Geol. Surv., vol. v, pp. 187-188. 1873. 

Geol. Surv., Kept. 1873-74, p. 27. 1874. 

Geol. Surv., vol. ii, p. 189. 1874. 

ieol. Surv., vol. ii, pp. 280, 328. 338, 427. 1874. 

yn. Upper Comiferous. 

I. Am. Jour. Sci., Sdser., vol. vii, pp. 395-398. 1874. 

.BBOC. Adv. Sci., Proc., vol. xxiv, p. 59, 1876. 



WBEK8.] HAMILTON. 185 

Hamilton, Hotchkiss. A Geographical and Political Summary of Virginia, p. 22. 
1876. 

Devonian. Vii^nia. Included in Old Red sandstone. Exact syn. Cadent. (For- 
mation viii, Rogers. ) 
Hamilton, Ashburner. Am. Phil. Soc., vol. xvi, pp. 528, 551. 1877. 

Devonian. Appalachian region. Exact syn. Cadent. 
Hamilton, Chamberlin. Geol. of Wis., vol. ii, pp. 395-405. 1877. 

Devonian. Wisconsin. 
Hamilton, Newberry. Ohio Geol. Surv., vol. iii, p. 11. 1878. 

Devonian. Ohio. 
Hamilton, Hall. Albany Inst., Trans., vol. ix, pp. 169-175. 1879. 

Devonian. Ohio. 
Hamilton, Piatt. 2d Pa. Geol. Surv., Rept. T, p. 32. 1881. 

Devonian. Pennsylvania. 
Hamilton group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 272. 1881. 
Hamilton group, Worthen. Econ. Geol. of III., vol. i, p. 482. 1882. 

Devonian. Illinois. 
Hamilton, White. 2d Pa. Geol. Surv., Rept. G», pp. 107-116. 1882. 

Devonian. Pennsylvania. Included in No. viii. 
Hamilton, Chamberlin. Geol. of Wis., vol. i, p. 201. 1883. 

Devonian. Wisconsin. 
Hamilton, Claypole. Am. Assoc. Adv. Sci., Proc, vol. xxxii, p. 244. 1884. 

Devonian. Pennsylvania. 
Hamilton. Ewing. 2d Pa. Geol. Surv., Rept. T*, pp. 432-433. 1884. 

Devonian. Pennsylvania. Exact syn., No. viiib. 
Hamilton group, Clarke. N. Y. State Geol. Rept. 1884, pp. 11-21. 1885. 

Devonian. New York. Includes Marcellus, Hamilton, and Genesee shales, Tully 
limestone, Portage shales and flags. 
Hamilton, Stevenson. Am. Phil. Soc. Proc, vol. xxi, pp. 136, 140. 1885. 

Devonian. Virginia. 
Hamilton, White. 2d Pa. Geol. Surv., Rept. T^ pp. 104-107, 109-113. 1885. 

Devonian. Pennsylvania. 
Hamilton, Claypole. 2d Pa. Geol. Surv., Rept. F^, pp. 66-69. 1885. 

Devonian. Pennsylvania. Includes Monteballo sandstone. 
Hamilton, Stevenson. Am. Phil. Soc, Proc, vol. xxiv, p. 83. 1887. 

Devonian. Virginia. 
Hamilton, Prosser. Am. Assoc Adv. Sci., Proc, vol. xxxvi, p. 210. 1888. 

Devonian. New York. 
Hamilton group. Miller. N. A. Geol. r.nd Pal., p. 60. 1889. 

Hamilton shale, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 26-27. 
1890. 

Devonian. Ohio. Exact, syn. Olentangy shale. 
Hamilton terrane, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 53. 1890. 

Devonian. Arkansas. 
Hamilton, Claypole. Am. Geol., vol. viii, p. 152. 1891. 

Devonian. Pennsylvania. Includes Tully limestone, Moscow shale, Encrinal lime- 
stone. Blue shale. 
Hamilton, Phinney. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 636. 1891. 

Devonian. Indiana. 
Hamilton, Prosser. Am. Jour. Sci., 3d ser., vol. xliv, pp. 210-221. 1892. 

Devonian. Pennsylvania. 
Hamilton, Lesley. 2d Pa. Geol. Surv., Final Rept, vol. ii, pp. 1236-1307. 1892. 

Devonian. Pennsylvania. Exact syn. No. viiic of Pennsylvania Survey. 



18() NOBTH AMERICAN GEOLOUIC FORMATION KAMEa. I«uu-i9i. 

HaiiiilUin, Prosner. Rocli. A<*l. Si^i., Prm-.. vol. ii, pp. 50-124. 1892. 

Devonian. New York. 
Hamilton, ProsNcr. Geol. Sck^ Am., Bull,, vol. vi, pp. 100, 108, 116. 1803. 

Devonian. New York. 
Hamilton, Proteer. N. Y. State Geo!., 12th Ann. Rept., pp. 114-142. 1S93. 

Devonian. New York, 
Hamilton, Proxaer, Am. Jour. Sd., 3d eer,, vol. xlvi, pp. 212-230. 1893. 

Devonian. New York. 
Hamilton, Brumell. Geol. Soc. Am., Bull,, vol. iv, p. 227, 1893. 

Devonian, Ontario. 
Hamilton, Williama and Clark. Marylanil; Its ResourceH, Induetriue, and Instila- 
tionB, pp. 70-71. 1*13. 

Devonian. Maryland, Exact ayn. Chemung. Part, ayn. No. viii. 
Hamilton group, Luther. N. Y. State Geol., 13th Ann. Kept., pp. 42^3. IStH. 

Devonian, New York. 
Hamilton, Darton. N. Y, State Geo!., ISth Ann. Kept., pp. 240-242, 300. 18M. 

Devonian. New Y<trk, 
Hamilton, Prosser. U, S. Geol. Surv., Bull,, No. 120, p, 78, 1894. 

Devonian. New York, Penneylvania. Included in Middle Devonian. Include 
Genesee shale, Marcellua shale. 
Hamilton shale, Lincoln. N, Y. State Geol., 14th Ann. Rept,, pp. 93-95. 1895. 

Devonian. New York, Includes Ludlowville shale, Encrinal limestone, Mo»ww 

Hamilton shale, Lincoln. N. Y. State Mu8,, 48th Ann, Rept., pt. ii, pp. 93-95. 1895, 

Devonian. New York, 
Hamilton limestone, Stewart. Kan. Univ. Quart., vol. iv, p. 162. 1896. 

Devonian. Missouri. 
Hamilton group, Luther. N, Y. Slate Geol., 15lh Ann. Rept., pp. 279-284. 1897. 

Devonian. New York. 
Hamilton series, Prosser. N. Y. State Geol., 15th Ann. Rept., pp. 83-222. 1897, 

Devonian. New York. 
Hamilton group, Bishoj). N. Y. State Geol., 15th Ann, Rept,, pp. 315-320. 1897. 

Devonian. New York, Includes Marct'llns, Hamilton, and Genesee shales. 
Hamilton group, Ries. N. Y. State Geol., IStii Ann. Kept., vol. i, p. 403. 1897. 

Devonian. New York. 
Hamilton stage, Sliepard. Mo. Geol. Sur\-,, vol. xii, p. 49. 1898. 

Devonian. Missouri. Includes Phel]>s sandstone, Sac limestone. King limestone. 
Black shale. 
Hamilton, Gallaher. Mo. Geol. Surv., Bien, Kept,, 1898, p. 27. 1898. 

Devonian. Missouri. 
Hamilton shale, Grabau. Buff. Soc. Nat. Hist,, Bull., vol. vi, pp. 33-34. 1898. 

Devonian. New York. 
Hamilton series, Prosser. N. Y. State Geol., I7th Ann. Rept, pp. 67-316; N. Y. 
State Mus., 5l8t Ann, Kept., vol, ii, pp. 67-316. 1899, 

Devonian. New York. 
Hamilton group, Luther. N. Y. State Geol,, 16tli Ann. Rept., p. 216. 1899. 

Devonian. New York. 
Hamilton beds. White. West Virginia Geol. Surv., vol, i, p. 208, 1899. 

Devonian. West Virginia. 
Hampshire, Darton. U. S. Geol. Surv., Geol. Atlasol U. S., Folios Noe. 14,32. 1894, 
1896. 

Devonian. Virginia, West Virginia. Esaet syns. Catskill, No. ix and Ponent. 
pshire, Tag and Brooke. U. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 34. 



J 



WEEKS.] HAMILTON HARDING. 187 

Hampshire, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 
1896. 
Devonian. West Virginia, Maryland. 
Hampshire formation, Clark. Md. Geol. Surv., vol. i, pp. 157, 184. 1897. 

Devonian. Maryland. 
Hampshire formation, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 61. 
1899. 
Devonian. Vii^ginia, West Virginia. 
Hampshire formation, O'Harra. Md. Geol. Surv., Allegany County, p. 108. 1900. 

Devonian. Maryland. 
Hampton shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 
1899. 
Cambrian. Virginia, Tennessee. 
Hajibixry shale. Van Hise and Bayley. U. S. Gfeol. Surv., Geol. Atlas of U. S., 
Folio No. 62. 1900. 
Alf2;onkian. Michi^n. 
Hancock limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 
Silurian. Kentucky, Virginia, Tennessee. 
Hancock limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 27. 
1896. 
Silurian. Tennessee. 
Hancock limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 
1899. 
Silurian. Virginia, Tennessee. 
Hang^g Bock sandstone, Bradley. Indiana Geol. Surv., 1st Ann. Rept., 1869, 
p. 157. 1869. 
Carboniferous. Indiana. Exact syn. Mahoning sandstone. 
Hanging Rock limestone, Orton. Ohio Geol. Surv., vol. iii, p. 892. 1878. 

Carboniferous. Ohio. Exact syns. Ferriferous limestone, Gray limestone. 
Hanna Valley bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 383. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Hannibal shale, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 289. 1892 

Lower Carboniferous. Missouri. Included in Kinderhook beds. 
Hannibal shale, Keyes. Iowa Geol. Surv., vol. i, pp. 55-56. 1893. 
Carboniferous. Iowa. Included in Kinderhook. Exact syn. Vermicular sand- 
stones and shales. 
Hannibal shale, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 56-57. 1894. 
Lower Carboniferous. Missouri. Included in Kmderhook stage. Exact syn. 
Vermicular shale. 
Ha'^nibal limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, pp. 390, 394. 1894. 
Lower Carboniferous. Missouri. Included in Kinderhook stage. Exact syn. 
Vermicular. 
Hannibal shales, Keyes. St. Louis Acad. Sci., Trans., vol. vii, p. 359. 1897. 

Devonian. Missouri. Exact syn. Vermicular sandstone. 
Hannibal shale, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 86-92. 1898. 

Lower Carboniferous. Missouri. Included in Kmderhook stage. 
Hardgrave sandstone, Diller. Geol. Soc. Am.. Bull., vol. iii, p. 372. 1892. 

Jurassic. California. Included in Lias (?). 
Harding sandstone, Walcott. Geol. Soc. Am., Bull., vol. iii, pp. 153-169. 1892. 

Ordovician. Colorado. 
Harding sandstone. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 1894. 

Silurian. Colorado. 
Harding sandstone, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 
Silurian. Colorado. 



188 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [biill.1(l 

Hardiatonville quartzite, Woiff and Brooks. U. 8. Geoi. Surv., 18th Ann. Rept, 
pt. ii, pp. 442-M3, 454-456. 1898. 

Cambrian. NewJentey. 
Hardwick gneiss, EmerooD. V. S. Geol, Sarv., Mon., vol. xiix, pp. 239-240, 317. 
1898. 

Silurian. Hassachueetts. 
Harlan sandstone, Campbell. U. 8. Geol. Surv., Bull. No. Ill, p. 31. 1893. 

Carbon if erouB. Virginia. Included in Coal Measures. 
Harlan sandetane, Campbell. U. S. Gool. 8urv., Geol. Atlas of U. S., Folio Na M. 
1894. 

Carboniferous. Kentucky, VirKinia, Tennessee. 
Harper sandstones, Cnmin. Ci)lo. Ooilej^ Stud., vol. vi, pp. 3, 18-20. 1896. 

I'ermian. Kansas. Included in Cimarron Heries. 
Harper formation, Cragin. Am. "Geol., vol. xix, pp. 352-355. 1897. 

Permian. Kansas, Oklahoma. Included in Kingfisher formation of Cimarron 

HarpsrB Ferry shales, Williams and Clark. Ataryland; Its lU^sourcea, Industries, 
and Institutions, p. 68. 1893. 
Cambrian. Maryland. 
HarperH shale, Keith. U. S. Geoi. Sorv., Geol. Atlas of U. S., Folio No. 10. ISM. 

Cambrian. Virginia, Maryland, West Virginia. 
Harpers shale, Keith. U. 8. Geol. Surv., I4th Ann. Kept., pt ii, p. 333. 1894. 

Cambrian. Virginia, Maryland. 
Harpers formation, Clark. Md. Geol. Surv., vol. i, pp. 172-176. 1897. 

Canibnau. Maryland. 
Harpeth and Tennessee River group, Safford. Ain. Jour. Sci., 2d ser., vol. Jii, 
pp.367-;K8. 1851. 
Silurian. Tennessee. 
Harris City limestone, Elnxl. Indiana Dept. Geol. and Nat. Hist., 12th Ann. 
Kept., 1881, p. 128. 1883. 
Indiana. 
Harrodsburg limestone, Hopkins and Sielx'nthal. Indiana Dept. Geol. and Nat. 
Resourt^s, 2lst Ann. RejU. 1896, p. 296. 18i)7. 
Carboniferous. Indiana. 
Harrodsbunt limei'tone, Jones, Indiana Acad. Si-i., I'roc,, I8fl7, p. 257. 1898. 

Lower Carboniferous. Indiana. 
Harrodsburg limestone, Blatchley and Ashley. Indiana Dept. Geol. and Nat 
Resources, 22d Ann. Bept.,'l89r, pp. 16, '20. 18!)8. 
Carboniferous. Indiana. 
Harrodsburg limestone, Ashley. Indiana Dept. Geol. and Nat. Resources, 23d Ann. 



' R^ions, pt. u, 
le. Exact syn. 
, pt. iii, p. 436. 



WEEKS.] HABDISTON VILLE — HAWTHORNE. 1 89 

Hartshome sandstone, Taff and Adams. U. S. Geol. Surv., 21st Ann. Rept., pt. ii, 
p. 274. 1900. 
Carboniferous. Indian Territory. 
Hart-w^ell sandstone, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Included in Sebastian stage. 
Hastingrs, Logan. Can. Geol. Surv. Rept. 1863-1866, p. 93, footnote, 1866. 
Hastings limestone, Hunt. Boston Soc. Nat. Hist., Proc., vol.xix, 1876-78, p. 278. 

1878. 
Hastings series. Hunt. 2d Pa. Geol. Surv., Rept. E, pp. 171-173, 177. 1878. 

Archean. Canada. 
Hastings series, Vennor. Can. Geol. Surv., Rept. 1876-77, pp. 254-256. 1878. 

Archean. Canada. Included in Laurentian (Upper). 
Hastings series or group, Selwyn. Can. Geol. Surv., Rept. 1877-78, p. lOA. 1879. 

Archean. Canada. 
Hastings series, Adams. Can. Geol. Surv., new ser., vol. iii, p. 4J. 1895. 

Archean. Canada. 
Hastings series, Adams and Barlow. Geol. Soc. Am., Bull., vol. viii, pp. 398, 402. 
1897. 
Algonkian. Canada. Included in Laurentian. 
Hastings series, Adams, Barlow, and Ells. Can. Rec. Sci., vol. vii, pp. 304-313. 1897. 

Algonkian. Canada. 
Hastings series, Adams. Jour, of Geo!., vol. i, pp. 335-336. 1898. 

A Igonkian . Canada. 
Hatclietigbee group, Aldrich. Ala. Geol. Surv., Bull. No. 1, p. 50. 1886. 

Tertiary. Alabama. 
Hatchetigbee series. Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 39. 
1887. 
Tertiary. Alabama. Included in Lignitic, Lower Eocene. 
Hatchetigbee division, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., 1891. 

Tertiary. Georgia. Included in Lignitic. 
Hatchetigbee, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 597. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Hatchetigbee series, Langdon. Ga. Geol. Surv., 1st Rep. of Prog., p. 96. 1891. 

Tertiary. Georgia. 
Hatchetigbee, Smith, Johnson, and Langdon. Ala. Geol. Surv., Geol. of Coa.stal 
Plain of Ala., pp. 149, 235, 397, 491. 1894. 
Tertiary. Alabama. Included in Eocene Lignitic. 
Hatchetigbee beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 345. 1898. 

Tertiary. Alabama. Included in Eocene. 
Hawley schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Silurian. Massachusetts. 
Hawley schist, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 

Cambrian(?). Massachusetts. Part. syn. Stockbridge limestone. 
Hawley schist, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 163^171. 1898. 

Silurian. Massachusetts. Included in Lower Silurian. 
Hawley schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 1898. 

Silurian. Massachusetts. 
Hawpatch glacial gravel, Elrod. Indiana Dept. Geol. and Nat. Hist., 11th Ann. 
Rept, 1881, p. 156. 1882. 
Indiana. 
Hawthorne beds, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 
1892. 
Miocene. (Georgia and Florida)? Included in Chipola epoch, Chattahoochee 
group. 



190 NORTH AMERICAN OEOLOOIO FORMATION NAMES. [BOLi-m 

Hawtliorne beds, DalUmI Harris, U. S. Geol. Surv.Bull. No. 84, p. 107. 1892. 

Tertiary. Fluriitft. Inclu<Iei) in MinceDe. Chattahoochee group. 
Hay Creek formation, Jenney. U. S. Geo). Surv., 19th Ann. R«pt,pt. ii, pp. 568-587, 
593. 1899. 
CretactRiuH, South Dakota. Inuludeii in Dakota group. 
Hay Creek coal formation, Ward, U. S. Geol. Surv., 19th Ann. Kept,, pt. ii, p. 693. 
IS99. 
Cretaceous. South Dakota, 
Hayea River l>e<i8, Spurr. U. S. Geol. Surv,, 20tb Ann, Bept, pt. vii, pp. 172-173, 

184. 1900. 
Tertiary. Alaska. Inctudetl in Neocene, 
Hazel Hiate, Keith. U. S. Geol. Sun-., Geol. Atlas of U, S,, Folio No, 16. 1895. 

Tennessee, Nortti Carolina. Included in 0<w)ee group. 
Hazlet sandn, Clark, Bagg and Shattuck. (ieol. Soc, Am., Bull., vol. viii, pp. 315, 
329. 1897. 
CretaceouB, New Jersey. Inclu<1e<l in Matawan formation, 
Hazlet sand, Clark, Bagg and Shattuck. N, J. Geol, Surv., Bept., 1897, pp. 178-179. 
1898. 
Cretaceous. New Jersey. Included in Matawan formation. 
Helderbepg limeatone group, Mather. N.Y. Geol, Surv., 4th Ann. Rept., pp. 236-246. 
1840. 
Devonian. New York. 
Helderljerg limestone series, Mather, N. Y. Geol. Surv., 5th Ann. Kept, pp. 85-89. 
1841. 
Devonian. New York, Includes Seneca, Corniferous and Onondaga limestones. 
Oriskany, Scutella limestone, Delthyris shale, and Pentamerus limestone. 
Helderlxjrg limestone group. Hall, Am. Jour. ScL, 1st aer., vol, ilii, p. 57. 1842. 

New York. 
Helderberg system, Conrad. Phil. Acad. Nat. 8d., Jonr. vol. viii, pp. 233-234, 1842. 

Includes Middle Silurian. 
Helderberg division, Mather. Geol. of N. Y., pt. 1, pp. 324-353. 1843. 

Paleozoic, New York. Included in New York system. Includes Corniferous 
limestone^ Seneca limestone, Selenurus limestone, Onondaga !ime8tone=GTay 
sparry limestone, Schoharie grit, Cauda-galli grit=Cocktail grit of Dr, Eighl, 
Oriskany sandstone = White sandstone 1838, No. vii. Pa. Rept., Delthyris shaly 
I iniestone^ Scutella limestone, sparry limestone of Gebbard, Delthyris shsle^ 
Catskill slialy limestone, Pentamerus limestone^No, vi, Pennsylvania Survey, 
Water limestone = Teniae u lite limestone, and Hydraulic limerock of Eaton. 
Helderberg division, Kmmons. Agnc. of N. Y., vol. i, pp. 153-179. 1846. 
New York, Includes Onondaga salt group; Manlius water lime and shales; Penta- 
merus, Delthyris, and Rncrinal limeetones; Oriskany sandstone; Cauda^Ni 
Schoharie grits; and Onondaga limestone. 
Helderberg series. Upper, Hall, Foster and Whitney's Rept. on Geol, of I-b^*^ 
Superior Dist., pt. ii, p. 163. 1851. 
Devonian. Lake Superior region, 
Helderberg series. Upper, Hall. Am. Jour. Sci., 2d sen, vol. xvii, pp. 193-194. 1854. 

Devonian. Michigan. 
Helderberg, Upper, Meek, Mo. Geol. Surv,, 1st and 2d Ann. Repts., pt. ii, p- IM- 
1855. 
Devonian. Missouri. 
Helderberg, Upper, Hall. Iowa Geol. Surv., vol. i, pt. i, pp, 81-84, 1858. 
Devonian. Iowa. 
oi.io..iu.n> ^»>,.» H.1I Paleontology of N. Y., vol, iii, pt. i, pp. 97-98. 1858. 



wKKKs.] HAWTHORNE HELDERBERG. 191 

Helcierberj;, Lower, Safford. Am. Jour. Sci., 2d ser., vol. xxxi, p. 208. 1860. 
Silurian. Tennessee. Exact syn. Lower Helderberg(?) called Gray crinoidal 
limestone. 
Helderberg limestone, Upper, Hitchcock. Geol. of Vt., vol. i, pp. 447-451. 1861. 

Devonian. Vermont. 
Helderberg group, Ix^wer, Logan. Can. Geol. Surv., Kept, 1843-1864, pp. 345-352. 
1863. 
XJpper Silurian. Canada. Includes Water-lime group; Pentamerous limestone; 
Delthyris shaly limestone; Encrinal limestone; and Upper Pentamerous lime- 
stone. 
Helderberg group. Lower, Chapman. Can. Inst, new ser., vol. viii, pp. 439-440. 
1863. 
Silurian. Canada. Included in Upper Silurian. 
Helderberg group. Hall. Paleontology of N. Y., vol. iv, pt. i, pp. 1-4. 1867. 

Silurian. New York. 
Helderberg, Lower, Cook. Geol. of N. J., pp. 158-159. 1868. 

Silurian. New Jersey. 
Helderberg limestone. Lower, Worthen. III. Geol. Surv., vol. iii, pp. 25-26, 36-37. 
1868. 
Silurian. Illinois. 
Helderberg, Lower, Safford. Geol. of Tennessee, pp. 322-328. 1869. 
Silurian. Tennessee. Exact syn. Lower Helderberg of New York. 
Helderberg, Lower, Worthen. Am. Assoc. Adv. Sci., Proc, vol. xix, p. 175. 1870. 

Silurian. Illinois. 
Helderberg series, Dana. Am. Jour. Sci., 3d ser., vol. vi, pp. 339-352. 1873. 

Silurian. Massachusetts, Connecticut. 
Helderberg, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 63, 104. 1873. 

Silurian. Ohio. 
Helderberg group, Lower, Hall. Am. Assoc. Adv. Sci., Proc., vol. xxii, p. 321. 1873. 
Silurian. New York, Mississippi Valley. Includes Upper Pentamerus and shaly 
limestone. Lower Pentamerus and Tentaculite limestone. 
Helderberg limestone. Lower, Killebrew and Safford. Resources of Tenn., p. 39. 
1874. 
Silurian. Tennessee. Included in Lower Helderberg period. 
Helderberg strata, Hitchcock. Am. Jour. Sci., 3d ser., vol. vii, pp. 476, 557-568. 
1874. 
Silurian. New Hampshire. 
Helderberg, Orton. Ohio Geol. Surv., vol. ii, pp. 615, 643. 1874. 

Silurian. Ohio. Included in Upper Silurian. Includes Water lime. 
Helderberg, Lower, Hall. Regents Univ. of N. Y., 27th Ann. Rept., pp. 117-131. 
1875. 
Silurian. New York. Includes Tentaculite limestone, Ixjwer PentameruH lime- 
stone, shaly limestone. Upper Pentamerus or Scutella, and Limestone forma- 
tion no. vi (Pa.). 
Helderberg, Hotchkiss. A Geographical and Political Summary of Virginia. 1876. 
Upper Silurian. Virginia. Exact syns. Pre-Meridian. (Formation vi, Rogers.) 
Helderberg, Lower, Barrett. Lyceum of Nat. Hist, of N. Y., Annals., vol. xi, 
pp. 290-299. 1876. 
Silurian. New York. 
Helderberg formation, Dana. Am. Jour. Sci., 3d ser., vol. xiv, pp. 379-387. 1877. 

Silurian. Massachusetts, Vermont. 
Helderberg series, Hitchcock. Geol. of New Hamp., pt. ii, pp. 325-342, 444. 1877. 
Devonian. New Hampshire. 



192 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Helderberg, Lower, Ash burner. Am. Phil. Soc., Proc, voL xvi, pp.529, 555. 1877. 

Silurian. Appalachian region. Includes Lewistown (Pre-Meridian) limestone. 
Helderberg limestone, Lower, Chamberlin. Geol. of Wis., vol. ii, p. 390. 1877. 

Upper Silurian. Wisconsin. 
Helderberg, Upper, Ashbumer. Am. Phil. Soc. Proc., vol. xvi, pp. 529, 553. 1877. 

Devonian. Appalachian region^ Exact syns. Post-Meridian, Corniferous. 
Helderberg, Lower, Hussey. Ohio Geol. Surv., vol. iii, p. 445. 1878. 

Silurian. Ohio. Exact syn. Water lime. 
Helderberg, Lower, Orton. Ohio Geol. Surv., vol. iii, p. 600. 1878. 

Silurian. Ohio. Exact syn. Water lime. 
Helderberg, Upper, Hall. Albany Inst, Trans., vol. ix, pp. 169-175. 1879. 

Devonion. Ohio. 
Helderberg, Lower, Stevenson. Am. Phil. Soc., Proc., vol. xix, p. 98. 1880. 

Silurian. Virginia. 
Helderberg, Lower, Piatt. 2d Pa. Geol. Surv., Kept. T., pp. 37-41. 1881. 

Silurian. Pennsylvania. Exact syn. Lewiston limestone. 
Helderberg group, Lower, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 274, 

292. 1881. 
Helderberg, Upper, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 34-35. 1881. 

Devonian. Pennsylvania. 
Helderberg group. Upper, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 291. 

1881. 
Helderberg limestone, Lower, Englemann and Worthen. Econ. Geol. of 111., vol. i, 
pp. 463-464. 1882. 

Silurian. Illinois. Exact, syn. Niagara of Northern Illinois. 
Helderberg, Lower, Stevenson. 2d Pa. Geol. Surv., Rept. T\ pp. 87-89. 1882. 

Silurian. Pennsylvania. 
Helderberg, Lower, White. 2d Pa. Geol. Surv., Rept. G«, pp. 127-147. 1882. 

Silurian. Pennsylvania. Includes Storm ville shales. Decker Ferry limestone, 
Bossardville lunestone, and Poxono Island shales. Exact syn. No. vi. 
Helderberg, Upper, White. 2d Pa. Geol. Surv., Rept. G«, pp. 116-122. 1882. 

Devonian. Pennsylvania. Included in No. viii. Includes Corniferous limestone, 
and Cauda-galli grit. 
Helderberg period, Chamberlin. Geol. of Wis., vol. i, p. 178. 1883. 

Silurian. Wisconsin. Included in Upper Silurian. Includes Oriskany, Lower 
Helderberg, and Salina. 
Helderberg, Lower, Chamberlin. Geol. of Wis., vol. i, p. 197. 1883. 

Silurian. Wisconsin. Included in Upper Silurian. 
Helderberg, Lower, Hall. Am. Assoc. Adv. Sci., Proc, vol. xxxi, p. 48. 1883. 

Silurian. New York. 
Helderberg, Lower, White. 2d Pa. Geol. Surv., Rept. G^ pp. 87-110. 1883. 

Silurian. Pennsylvania. Includes Stormville, Bastard, and Bossardville lime- 
stones, Salina series. Exact syn. No. vi. 
Helderberg, Lower, Chamberlin. Geol. of Wis., vol. i, pp. 197-200. 1883. 

Upper Silurian. Wisconsin. 
Helderberg, Lower, Clay pole. 2d Pa. Geol. Surv., Rept. F^, pp. 58-62. 1885. 

Silurian. Pennsylvania. Includes Lewistown (Bossardville) limestone. 
Helderberg, Lower, Williams. Am. Jour. Sci., 3d sen, vol. xxxi, p. 139. 1886. 

Silurian. New York. 
Helderberg, Lower, Williams. Am. Assoc. Adv. Sci., Proc., vol. xxxiv, p. 235. 1886. 

Silurian. New York. 
Helderberg, Lower, Williams. Am. Asssoc. Ad. Sci., Proc, vol. xxxv, p. 214. 1887. 

Silurian. New York. 
Helderberg, Lower, Williams. N. Y. State Geol., Rept., 1886, pp. 10-12. 1887. 

Devonian. New York. 



WKEK8.] HELDERBERG. 193 

Helderbei^, Iy)wer, Clarke. N. Y. State Geol., Kept, 1888, pp. 82-91. 1889. 

Devonian. New York. 
Helderberg series, Lower, Orton. U. S. Geol. Surv., 8th Ann. Kept., pt ii, p. 563. 
1889. 
Silurian. Ohio, Indiana. Includes Water lime, and Cliff limestone. 
Helderbergj limestone, Upper, Orton. U. S. Geol. Surv., 8th Ann. Rept, pt. ii, p. 568. 
1889. 
Devonian. Ohio, Indiana. Exact syn. Comiferous. 
Helderberg group, Lower, Miller. N. A. Geol. and Pal., p. 56. 1889. 
Helderberg group, Upper, Miller. N. A. Geol. and Pal., p. 59. 1889. 
Helderberg formation. Lower, Orton. Ohio Geol. Surv., 3d Organization, Ist Ann. 
Rept, pp. 21-23. 1890. 
Silurian. Ohio. Exact svn. Water-lime formation. 
Helderberg, Lower, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 52. 1890. 

Silurian. Arkansas. Includes Pentamerus, Catskill, Encrinal, and Upper Pen- 
tamerus limestones. Part syn. Water-lime group. 
Helderberg limestone. Upper, Orton. Ohio Geol. Surv., 3d Organization, let Ann. 
Rept., pp. 24-26. 1890. 
Devonian. Ohio. Includes Columbus and Delaware limestones. 
Helderberg, Lower, Phinney. U. S. Geol^Surv., 11th Ann. Rept., pt. i, p. 63^1 1891. 

Silurian. Indiana. 
Helderberg, Lower, D*Invilliers. 2d Pa. Geol. Surv., Rept. F*, pp. 54-61. 1891. 
Silurian. Pennsylvania. Includes Lewistown limestone. Exact syn. No. vi. 
Helderberg, Upper, Phinney. U. S. Geol. Surv., 11th Ann. Kept.,, pt.i, p. 635. 1891. 

Devonian. Indiana. 
Helderberg, Lower, Proeser. Roch. Acad. Sci., Proc., vol. ii, pp. 50-124. 1892. 

Silurian. New York. 
Helderberg, Upper, Prosser. Roch. Acad. Sci., Proc, vol. ii, pp. 50-124. 1892. 

Devonian. New York. 
Helderberg, Williams and Clark. Maryland; its Resources, Industries, and Institu- 
tions, p. 70. 1893. 
Devonian. Maryland. Part. syn. No. vi. 
Helderberg limestone, Darton. Geol. Soc. Am., Bull., vol. viii, pp. 367, 378. 1894. 

Silurian. New York. 
Helderberg limestone, Darton. N. Y. State Geol., 13th Ann. Rept., pj). 204-206, 
211-216. 1894. 
Devonian. New York. Includes Upper shaly beds, Scutella, Pentamerus, and 
Tentaculite beds. 
Helderberg, Upper, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Corniferous ( Lower Devonian. ) 
Helderberg, Upper, Lincoln. N. Y. State Geol., 14th Ann. Rept., pp. 87-92. 1895. 

Devonian. New York. Includes Onondaga, Corniferous, Seneca. 
Helderberg, Upper, Bishop. N. Y. State (leol., 15th Ann. Rept., p. 313. 1897. 

Devonian. New York. Includes Onondaga and Corniferous limestones. 
Helderberg group, Lower, Luther. N. Y. State Geol., 15th Ann. Kept., pp. 267-274. 
1897. 
Silurian. New York. 
Helderberg group, Upper, Luther. N. Y. State Geol., loth Ann. Rept., pp. 275-279. 
1897. 
Silurian. New York. 
Helderbei^ limestones, Ries. N. Y. State Geol., 15th Ann. Rept, vol. i, p. 401. 
1897. 
Silurian. New York. 

Bull. 191—02 13 



I'.H NORTH AMKRICAN OEOLOUIC I'OBMATION NAMES, [iiill,19I. 

Helcitrberv, Clark. Md. (ieol. Surv., vol. Hi, pp. 97, 98. 1899. 

IH^vonian. Mary1aii<l. Pnrt, nyns. liewislown. 
HelderbeiK, Lower, Girty. I'. S, Geol. Surv., 19th Ann. Kept., |>t. iii, pp. 546-550. 
1809. 
Silurian. Indian Territory. 
Hel(ler)>ergian, Clarke anil S*hiu-liert. Science, new ser., vol. x, pp. 878-877. 1899. 
Devonian. New York, liichicics Ciwyniaiie limestone, New Scotland beds, Becraft 
limestone, Kin)C><ton 1)e<1e, 
Ilelderbei^, Scliurhert. Geol. Sot-. Am., Bull., vol. xi, pp. 269-278. 1900. 

Etevonian. General. 
Helderber){ formation, O'Harra. Md. Geol. Surv., Allegany County, p. 94. 1900. 

Devonian. Maryland, 
Helena limestone, Walwtt. Geol. Mof. Am., Bull., vol. x, pp. 199, 207. 1899, 

Algonkian, Pre-Canilirian. Montana. In^lmled in Belt terrane. 
Hellem i|uartzite, Lesley. 2d Pa. Geol. Snrv., Final Bept., vol. i, pp. 166 et Kq. 
1892. 
Cambrian. Pennsylvania. 
Hemlock formation, Clements. U. S. Ge.>l. Surv., Mon., vol. xxxvi, jtp. 73-154. 1899. 

Michigan. Included in Lower Hiiroiiian series. 
Hemlock tomiation, Clements and. Smyth. U. S. Geol. Sun-., 19th Ann. Rept, 
pt. iii, pp. 4.')-63, 133. 1899. 
Algonkian. Michigan. Includes lione I^ake schists. 
Hemlock formation, Smyth. U. S. Geol. Surv., Mon., vol. xxxvi, pp. 440-446. 1899. 

Michigan. 
Hemlork formation, Van Hwe. U. S. Geol. Surv., 19th Ann. Kept., pi. iii.p. 16. 1899. 

Algonkian. Michigan. Included in ],.o\ver Iliironian. 
Henrietta limestones, Haworlh. Kan. I'liiv. Geol. Surv , vol. iii, p. 85. 1898. 

Carlwniferona. Kansas. 
Henrietta fonnation, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, pp. 33, 34-36, 119, 
121-159, 209, 212, 2ft8, 271-273. 1898. 
U]iper Carboniferous. Missonri. Includeii in l)es Moinee series. 
Henrietta, Bain and Leonard. Geol. Soc. Am. Bull., vol. x, p. 11. 1899. 

Upper Carboniferous. Missouri. Exact syn. Appanoose. Part. syns. Pawnee 
and Oswego of Kansas. 
Henrietta limestones, Keyec. Iowa Acad. Sci., Proc., vol. vii, p. 84. 1900. 

Carlioniferous. Miwinsippi Valley. Includeii in Coal Pleasures. 
Henrys Fork, Powell. V. S. Ge<^. and Geol. Surv., Geol. of Uinta Mts., pp. 40. 
50, 153. 1876. 
Crelaceons. Utah. 
Henrys Fork group, Pt«le. U. S. Geol. and Geog. Surv. of Terr., 9tli Ann. Kept., 
'p. 89. 1H77. 
Cretaceous. Colorado. Includeii in Dakota. 
Henrys Fork group. Gillierl. U. S. Geog. and Geol. Surv., Kept, on Henry Moun- 
tains, p. 4. 1877. 
Cretaceous. Ulali. 

Van Hise and Bayley. U. S. Geol. Surv., Geol. Alias of 
1900. 

Michigan. 
8 and Spencer. U. S. Geol. Surv., 21et Ann. Kept., pt- i't 



V. S, Geol. Surv., Geol. Atlas of V. S., Folios Nos, 16, 25, 
nd North Carolina, 



WEEKS. J HELDEEBERG — HIND08TAN. 195 

Sickman group (?), Loughridge. Ky. Geol. Surv., JackFon Purchase Region, pp. 
37-41. 1888. 
Kocene. Kentucky. 
Hickman group, Clark. U. S. Geol. Surv., Bull. No. 83, p. 71. 1891. 

Tertiary. Kentucky. . Included in Eocene. 
Hickory series, Comstock. Texas G^ol. Surv., 1st Ann. Rept, pp. 285-286. 1890. 

Cambrian. Texas. Included in Lower Cambrian(?). 
Hickory series, Dumble. Texas Geol. Surv., Ist Ann. Rept, pi. iii, p. Ixi. 1890. 

Cambrian. Texas. 
Hickory, Walcott. U. S. Geol. Surv., Bull. No. 81, p. 246. 1891. 

Cambrian. Texas. 
Hickory series, Comstock. Texa«i Geol. Surv., 2d Ann. Rept., p. 564. 1891. 

Cambrian. Texas. Includeil in Lower Cambrian. 
Sigrb. Park lake beds, Crosi. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 
1894. 
Included in Eocene. Colorado. 
Sigrli Itock sandstone, Ashley. Indiana Dept. Geol. and Nat. Resources, 23d Ann. 
Rept., 1898, p. 113. 1899. 
Carboniferous. Indiana. 
Sig^libridgo limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 46. 1898. 
Silurian. Kentucky. 
Hig^liland moraine, Elftman. Am. Geol., vol. xxi, pp. 92-98. 1898. 

Pleistocene. Minnesota. 
Hig^liland Arcliean, Britton. S<!h. of Mines Quart., vol. ix, pp. 33-37. 1887. 
New Jersey. Includes Gneissic and Schistose group, Iron-l)earing group, and 
Massive group. Part. syn. Laurentian. 
HillBboro sandstone, Orton. Ohio Geol. Surv., Rept. Prog., in 1870, pp. 271, 301. 
1871. 
Silurian. Ohio. Included in Niagara series. 
Hillsboro sandstone, Orton. Ohio Geol. Surv., Prelim. Rept., Petroleum and 
Inflammable Gas, p. 21. 1886. 
Ohio. Included in Niasrara series. 
Hillsboro sandstone, Orton. Ohio Geol. Surv., vol. vi, pp. 4, 13. 1888. 

Upper Silurian. Ohio. Included in Niagara group. 
Hillsboro sandstone, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept, 
p. 20. 1890. 
Silurian. Ohio. Included in Niagara group. 
Hillsboro sandstone, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 11. 1893. 

Upj)er Silurian. Ohio. Included in Niagara group. 
Hinchman -tuff , Diller. Geol. Soc. Am., Bull., vol. iii, j). 372. 1892. 

Jurassic. California. Included in Coral lian-Juras.sic. 
Hinchman tuff, Hyatt. Geol. Soc. Am., Bull., vol. v, p. 413. 1894. 

Jurassic. California. Included in Corallian. 
Hinckley sandrock, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, 
vol. ii, p. xxii. 1888. 
Minnesota. 
Hinckley sandstone, Keyes. Iowa Geol. Surv., 1st Ann. Rept, vol. i, p. 23. 1893. 

Cambrian. Iowa. Included in St. Croix sandstone. 
Hinckley sandstone, Winchell. Minn. Geol. and Nat Hist Surv., Final Rept., vol. 
iv, p. 16. 1899. 
Cambrian. Minnesota. 
Hindostan whetstone. Kindle. Indiana Dept. Geol. and Nat. Resources, 20th Ann. 
Rept., 1895, p. 336. 1896. 
Indiana. 



196 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Hinxlale gneias and limestone, Emerson. II. S. Geo!. Surv., Geol. Atlas of U. S., 
Hawley nheet. 1892. 
Algonkian. ManHaehusetts. Part. syn. Stamford gneiss. 
Hinsdale gneiss and limestone, Emerson. U. 8. Geol. Surv., Mon., vol. xxix, pp. 24-26. 
1898. 
Algonkian. Massachusetts. 
Hins<lale gneiss and limestone, Emerson. U. S. (u»ol. Surv., Bull. No. 159, pp. 22-32. 
1899. 
Pre-Cambrian. Massachusetts. 
Hinsdale gneiss and limestone, Emerson. U. S. (reol. 8urv., Bull. No. 159, pp. 22-32. 
1899. 
Pre-Cambrian. Massachusetts. 
Hinton, Dumble. Texas (ieol. Surv., 1st Ann. Rept., pi. iii. 1890. 

Silurian. Texas. Includetlin San Saba series. 
Hinton division, Comstm-k. Texas Geol. Surv., 1st Ann. Rept., pp. 302-303. 1890. 

Silurian. Texas. Include<l in San Saba series. 
Hinton formation, CampMl and Mendenhall. U. S. Geol. Surv., 17th Ann. Rept, 
pt. ii, p. 487. 1896. 
Carl>oniferou8. West Virginia. Exact syns. (ireenbrier shale. No. xi of Rogers. 
Hinton, CampMl. U. S. (ieol. Surv., (ieiil. Atlas of U. S., Folio No. 26. 1896. 

Carlxmiferous. Virginia, West Virginia. 
Hinton formation, Canipl)ell. IT. S. (ieol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Carl)oniferou8. Virginia and West Virginia. Part syns. No. xi, Greenbrier shale. 
Hog: Creek IkhI, Drake. Texas Geol. Surv., 4th Ann. Rept, p. 397. 1893. 

Carlx)niferou8. Texas. Included in Canvon division. 
Hogback sandstone. Middle, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta 
Mountains., pp. 40, 48, 155. 1876. 
Cretaceous. Utah. Included in Point of Kocks. 
Hogback sandstone, Upjxr, Powell. U. S. (ieog. and Cieol. Surv., Geol. of Uinta 
Mountains, pp. 40, 48, 155. 1876. 
Cretaceous. Utah, Included in Point of Ri)cks. 
Holiknuk series, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 159-161, 182. 
1900. 
Cretaceous. Alaska. 
Holland sandstone, Orton. Ohio Cieol. Surv., 3d Organization, 1st Ann. Rept, p. 24. 
1890. 
Silurian. Ohio. Exact syns. Monclova sandstone, Sylvania sandstone. 
Holocene, Perry. Boston Soc. Nat. Hist., Proc, vol. xv, 1872-73, p. 55. 1872. 

New England. Included in Tertiary. 
Holyoke formation, Wadsworth. Mich. Ge<jl. Surv., Rept. State Board for 1891, 
1892, pp. 63, 64, 66, 84, 127. 1893. 
Azoic or Archean. Miciiigan. Exact syn. Upi>er Marquette series. Part syn. 
Taconic formation in Michigan. 
Holyoke, Van llise. Geol. Soc. Am., Bull., vol. v, p. 6. 1893. 

Archean. Michigan. Included in Maniuette. 
Home Creek beil, Drake. Texas Geol. Surv., 4th Ann. Rept. i)p. 398-399. 1893. 

CarlK)niferous. Texas. Included in Canyon division. 
Homewood sandstone, Piatt. 2d Pa. Geol. Surv., Rept H^ p. 324. 1880. 

Carlwniferous. Pennsylvania. Included in Pottsville conglomerate. 
Homewood sandstone, White. U. S. Geol. Surv., Bull. No. 65, p. 199. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Pottsville con- 
glomerate series. 



WBBKs] HINSDALE — H0R8ET0WN. 197 

Home wood sandstone, Orton. Ohio Geol. Surv., vol. vii, p. 36. 1893. 

Carl^oniferoufl. Ohio. Included in con>j:lonierate group. 
Soxiaker limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 
44. 1897. 
Cambrian. Virginia and West Virginia. 
Honaker limestone, Gampbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 
1899. 
Cambrian. Virginia and Tennessee. 
aonesdale sandstone, White. 2d Pa. Geol. Sur\\, Rept. G*, pp. 66-68. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Honesdale sandstone. White. 2d Pa. Geol. Surv., Rept. G«, pp. 97-98. 1882. . 

Devonian. Pennsylvania. Included in Catskill. 
Honesdale sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1580. 1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 
Honesdale sandstone, Prosser. U. S. Geol. Surv., Bull. No. 120, j). 78. 1894. 

Devonian. New York, Pennsylvania. Included in Catskill (Upper Devonian). 
Soosac schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Silurian or Cambrian. Massachusetts, l^art. syn. Stockbridge limestone, npper 
part. 
Hoosac schist, Wolff. U. S. Geol. Surv., Mon., vol. xxiii, pp. 23, 59, 69, 72, 80, 81, 
82, 87, 88. 1894. 
Siluro-Cambrian. Massachusetts. 
Hoosac schists, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 

Cambrian (?). Massachusetts. Part. syn. Stockbridge limestone. 
Hoosac schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 50. 1898. 

Silurian. Massachusetts. 
Hoosac schist, Emerson. U. S. Geol. Surv., Mon., vol. xxix, p. 66-75. 1898. 

Silurian. Massachusetts. Included in Lower Silurian. 
Hoosac schists, Emerson. U. S. Geol. Surv., Bull. No. 159, pp. 81-83. 1899. 

Silurian. Massachusetts. 
Hoover division, Comstock. Texas Geol. Surv., Ist Ann. Rept., pp. 298-301. 1890. 

Silurian. Texas. 
Hop Brook limestone, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 52. 1899. 

Pre-Cambrian. Massachusetts. 
Hopewell sandstone. Ami. Can. Rec. Sci., vol. viii, p. 162. 1900. 

Carboniferous. Canada. 
Hordes Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 422. 1893. 

Carboniferous. Texas. Included in Albany division. 
Horse Creek clay and shales, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 379. 
1893. ' 
Carboniferous. Texas. Included in Strawn division. 
Horse Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept, p. 419. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Horsepen group. White. Geol. Soc. Am., Bull., vol. vi, p. 316. 1895. 

Upper Carboniferous. West Virginia. Included in Pottsville formation. 
Horsetown, Becker. U. S. Geol. Surv., Bull. No. 19, p. 20. 1885. 

California. 
Horsetown beds, Becker. Geol. Soc. Am., Bull., vol. ii, p. 202. 1891. 

Cretaceous. California. 
Horsetown beds, Diller. Geol. Soc. Am., Bull., vol. iv, p. 205. 1893. 
Cretaceous. California. 



198 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [buluWI. 

Horeetowii IkmIs, Diller ami Stanton. Ueol. Soi% Am., Bull., vol. v, pp. 435, 445. 
1894. 

Cretaceous. 
Hosmer conglomerate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1508- 
1509. 1892. 

Devonian. Pennsylvania. Includeil in Venango. 
Hosselkus limestone, Diller. (ieol. Soc?. Am., Bull., vol. iii, p. 372. 1892. 

Trias. California, included in Lower Kamic. 
Hosselkus limestone. Smith. Jour, of Geol., vol. ii, pp. 606-609. 1B94. 

Trias. California. Included in Cedar formation. 
Hot Springs formation, Iddin^ and Weed. U. S. Geol. Surv., Mon., vol. xxxii, 
pt. ii, pp. 1-59. 1899. 

Pleistocene. Yellowstone Park. 
Howard limestones, Haworth. Kan. Univ. Geol. Surw, vol. iii, pp. 67, 105. 1898. 

Carboniferous. Kansas. Exact syn. Topeka limestone. 
Hiidson slate group, Mather. N. Y. Geol. Surv., 4th Ann. Rept, pp. 256-258. 
1840. 

Silurian. New York. 
Hudson slate series, Mather. N. Y. Geol. Surv., 5th Ann. Rept., pp. 90-97. 1841. 

Silurian. New York. Includes Frankfort slate and Mohawk slate. 
Hudson River group, Vanuxem. Geol. of N. Y., pt. iii, pp. 60-67. 1842. 

Paleozoic. New York. Included in New York system. Includes Frankfort sljite, 
Green slate, Pulaski shale, (iraywac^ke of Eaton, and No. iii, Pa. Survey. 
Hudson River group, Hall. Geol. of N. Y., pt. iv, 4th (icol. Dist., pp. 18, 30. 1843. 

Paleozoic. New York. Included in New York system. Exact syn. Blue lime- 
stone of Ohio. 
Hudson River group, Mather. Geol. of N. Y., pt. i, pp. 369-389. 1843. 

Paleozoic. New York. Im^luded in Champlain division. Includes Frankfort 
slate, Ciraywackc, Pulaski shale, and No. iii, Pa. Survey. 
Hudson River group. Hall. Foster and Whitney's Rept. on Lake Superior Dist, 
pt. ii, p. 148. 1851. 

Silurian. Lake Superior region. 
Hudson River, Swallow. Mo. Geol. Surv., Island 2d Ann. Repts., p. 110. 1855. 

Silurian. Missouri. Included in Lower Silurian. 
Hudson River group, Hall. Iowa Geol. Surv., vol. i, p. 64. 1858. 

Silurian. Iowa. 
Hudson River group, Whitney. Iowa Geol. Surv., vol. i, pp. 290, 299, 356. 1858. 

Silurian. Iowa. 
Hudson River group, Hall. Iowa Geol. Surv., vol. i, pt. i, i)p. 64-70. 1858. 

Silurian. Iowa. 
Hudson River group, Hall and Whitney. Am. Jour. Sci., 2d ser., vol. xxvii, p. 109. 
1859. 

Silurian. Iowa. 
Hudson River group, Hitchcock. Geol. of V^t., vol. i, pp. 308-326. 1861. 

Paleozoic. Vermont. Included in Hudson period. 
Hudson River group, Whitney. Rept. on Upper Misf?issippi kad region, p. 177. 1862. 

Silurian. Wisconsin. 
Hudson River formation, Logan. Can. Geol. Surv., Rept. 1843-1863, pp. 198-224. 
1863. 

Lower Silurian. Canada. . 
Hudson River formation, Chapman. Can. Inst., new ser., vol. viii, pp. 205-208. 1863. 

Silurian. Canada. Included in Lower Silurian, Ontario group. 



WEEKS.] HORSETOWN — HUDSON. 199 

Hudson River formation, Bell. Can. Geol. Surv., Rept. 1863-1866, pp. 171-173, 1866. 

Can. Geol. Surv., Rept. 1866-1869, pp. 125-127, 1871. 

Silurian. Canada. 

Hudson River group, Meek. Am. Jour. Sci., 2(1 ser., vol. xviii, p. 256. 1867. 

Silurian. Illinois, New York. 

Hudson River slate. Cook. Geol. of N. J., pp. 135-145. 1868. 

Silurian. New Jersey. 

Hudson River group, Shumaril. Mo. Geol. Surv., Repts. 1855-1871, pp. 264, 297. 

1873. 

Silurian. Missouri. Includes Upper Hudson shale. Cape Girardeau sandstone, 

l^wer Hudson shale, and Reeeptaeulite limestone. 

Hudson shale, Upper, Shumard. Mo. Geol. Surv., Repts. 1855-1871, p. 264. 1873. 

Silurian. Missouri. Included in Hudson lliver group. 

Hudson shale. Lower, Shumard. Mo. Geol. Surv., Repts. 1855-1871, p. 265. 1873. 

Silurian. Missouri. Included in Hudson River group. 

Hudson group, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 60. 1873. 

Silurian. Ohio. 

Hudson, Hotchkiss. A Geographical and Political Summary of Virginia, p. 22. 1876. 

Cambrian and Lower Silurian. Virginia. Exact syns. Matinal. (Formation iii, 

Rogers. ) 

Hudson River, Prime. Am. Phil. Soc, Proc., vol. xvi, p. 254. 1877. 

Silurian. Pennsylvania. Exact, syns. Matinal, No. iii in part. 

Hudson River, Ashbumer. Am. Phil. Soc., Proc, vol. xvi, pp. 532, 558. 1877. 

Silurian. Appalachian region. Part. syn. Matinal in part. 

Hudson River slates. Prime. Am. Jour. Sci., 3d ser., vol. xv, p. 269. 1878. 

Silurian. Pennsylvania. Exact syn. Matinal slates. 

Hudson River, Hall. Am. Assoc. Adv. Sci., Proc, vol. xxvi, pp. 259-265. 1878. 

Silurian. New York, Pennsylvania, and Ohio valley. Exact pyn. Cincinnati. 

Hudson River slate. Prime. 2d Pa. Geol. Surv., Rept. D^ pp. 71-74. 1878. 

Silurian. Pennsylvania. Included in No. iii. 

Hudson River, Dana. Am. Jour. Sci., 3d ser., vol. xvii, p. 375. 1879. 

Silurian. New York. 

Hudson River group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, pp. 267, 269, 

285. 1881. 
Ordovician. 

Hudson River, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 48-51. 1881. 

Silurian. Pennsylvania. 
Hudson Tribolite beds, Wooster. Geol. of Wisconsin, vol. iv, p. 110. 1882. 

Cambrian. Wisconsin. Included in Potsdam sandstone. 
Hudson, Stevenson. 2d Pa. Geol. Surv., Rept. T, pp. 92-93. 1882. 

Silurian. Pennsylvania. 
Hudson River group, Linney. Ky. Geol. Surv., Geol. of Ciarrard vo., pp. 15-19. 
1883. 

Silurian. Kentucky. Includes Lower, Middle, and Upper. 
Hudson River formation, Chamberlin. GeoK of Wis., vol. i, pp. 170-175. 1883. 

Lower Silurian or Cambro-Silurian. Wisconsin. Exact syn. Cincinnati. 
Hudson River, Hall. Am. Assoc. Adv. Sci., Proc, vol. xxxi, p. 41. 1883. 

Silurian. 
Hudson River, Winchell. Minn. Geol. and Nat. Hist., Surv., Final Kept., vol. i, 

p. 360. 1884. 
Hudson beds, Upper, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Mont- 
gomery Counties. 1884. 

Silurian or Cambrian. Kentucky. Included in Hudson River period. 



200 NOBTH AMERICAN OEOLUOIC FORMATION NAMES. iBULi.Ui. 

]liiilmiil>e<lB, Lower, linney. Ky. (ieol. Surv. (Proctor), Geol.ot Clark and MoDt- 
gomery Counties. IA84. 
Silurian or Uatiilirian. Kentucky. Included in Iludeon River period. 
lIudHoii Kiver group, Linney. Ky. Ueol. Surv., Geol. of Spencer and Nelron Conn- 
ties, pp. 8-18, 30-36. 1884. 
Siliimn. Kentucky. Includes Lower, Middle, and Upper. 
Iludsoii River, Knott. Ky. Geol. Surv., Rept. on Marion Co., p. 12. 1885. 

Silurian. Kentucky. Includes Middle and Upper beds. 
Iliid-xon l)edH, Linney. Ky. (ieol, Snrv., Geol. of Mason Co., pp. 7-13. 1886. 

Silurian. Kentucky. Includes I.i>wer, Mi<tdle. and Upper. 
Iludnon, Linney. Ky. (ieol. Kurv., Geol. of ICath Co., pp. 10-16. 1886. 

Silurian. Kentucky. IncludeH Lower, Middle, and Upper Hudson. 
Iludwm River group. Miller. N. A. Geol. and Pa., p. ,45. 1899. 
Hudson terrane, VValtott. Geol. Soc. Am., Bull., vol.'i, p. 353. 1889. 
Silurian. New York. Int^ludes Hutlson River ehale. Utica ahale, Frankfort 
shale, Lorraine shale, Salmon Kiver, Cincinnati ehale, Nashville shale, uil 
Maijuoketa shale. 
HuilBcm RiverRroup, Walcott. Geol. Soc Am., Bull, vol. i, p. 344. 1889. 
Silurian. New York. Exact ayna. Salmon River, Hudson River, J^orraine, Nisb- 
ville, Cincinnati, and Maquoketa. 
Hudson River limestone, Hopkins. Ark. Geol. Sun-., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. 
Hudson River group, Orion. Ohio Geol. Surv., 3d Organization. Ist Ann. Kept., 
pp. 15-16. ISStO. 
Silurian. Ohio. Includes Cincinnati division and Lebanon division. 
Hudson River, Winchell and Ulrich. Min. (ieol. and Nat. Hist. Surv., Final Kept.. 
vol. iii, pt. ii, p. ci. 1891, 
Lower Silurian. Minnesota, t'xact syn. Cincinnati. 
Hudson River group, Orton. Ky. Geol. Surv., Rept. on Petroleum, etc., p. 131. 
1891. 
Silurian. Kentucky. 
HudMtn River, Phinney. U. S. Geol. Wurv.. 11th Ann. Rept.. pt. i, p. 630. 1891. 

Silurian. Indiana. 
Hudson River, D'lnvilliers. 2d Pa. Geol. Surv., Rept. F', pp. 80-82. 1891. 

Silurian. Pennsylvania. Exact syn. No. iii. 
Hudson shale, Darton. Geol. Soc. Am., Bull., vol. iv, p. 4.37. 1893. 
Silurian. New York. 

Geol. Soc. Am. Bull., vol. iv, pp. 227, 234. 1893. 

and Clark. Maryland; Its Resources, Industriee, aod 
1893. 

U. S. Geol. Surv., 13th Ann. Rept.. pt. ii, p. 315. 1893. 

o. Geol. Surv., vol. iv, p. 30. 1894. 

iri. Included in Hudson River sta^, 

ieol. Soc. Am., Bull., vol. viii, pp. 367, 383. 1894. 

i.Y.StateGeoi.,]3thAnn. Rept., pp. 249-250, 310. 18W. 

ing. Ottawa Field Nat. Club, Trans. 1895-96, vol. xi, pp- 

iluded in Cambro-Siluriau. 



WKKK8.] HUDSON — HUBOX. 201 

Hudson River shale, Udden. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 834. 1896. 

Silurian. Illinois. 
Hudson River slates, Ries. N. Y. State Geo)., 15th Ann. Rept., vol. i, pp. 401, 
439-442. 1897. 
Silurian. New York. 
Hudson River group, Luther. N. Y. State Geol., 16th Ann. Rept, p. 200. 1899. 

Silurian. New York. 
Hudson River shale, Cumings. N. Y. State Mus. Bull., vol. vii, no. xxxiv, p. 428. 
1900. 
Silurian. New York. 
Hueco series, Hill. Geol. Soc. Am., Bull., vol. iii, p. 97. 1892. 

Tertiary. Texas, New Mexico. 
Suerfano beds, Hills. Colo. Sci. Soc., Proc., vol. iii, pp. 148-164, 217-223. 1888. 

Tertiary. Colorado. 
Huerfano beds, Clark. U. S. Geol. Surv., Bull. No. 83, p. 142. 1891. 

Tertiary. Colorado. Included in Eocene. 
Huerfano series. Hills. Colo. Sci. Soc., Proc., vol. iv, pp. 7-9. 1891. 

Tertiary. Colorado. Includes Huerfano beds, Cuchara beds, Poison Canyon beds. 
Huerfano beds. Hills. Colo. Sci. Soc, Proc., vol. i v., p. 9. 1891. 

Tertiary. Colorado. Exact syn. Bridger group. 
Huerfano series, ^Cross. Am. Jour. Sci., 3<1 ser., vol. xliv, p. 21. 1892. 

Tertiary. Colorado. Includes Huerfano, Cuchara and Poison Canyon beds. 
Huerfano series, Osborn. Am. Nat., vol. xxxi, pp. 966-968. 1897. 

Tertiary. Colorado. Exact syns. Upper beds=Bridger group, Lower beds=Wind 
River group. 
Huerfano formation. Smith. Jour, of Geol., vol. viii, pp. 451-452. 1900. 

Tertiary. Western North America. Included in Eocene. 
Huinl>oldt group. King. U. S. Geol. Explor. of 40th Parallel, vol. i, p. 434. 1878. 

Tertiary. Utah, Nevada. Included in Pliocene. 
Humboldt limestone. Hay. Kan. Acad. Sci., Trans., vol. x, p. 7. 1887. 

Carboniferous. Kansas. 
Humboldt group, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, pp. 312, 315. 
1892. 
Tertiary. Utah, Nevada. 
Humbug series. Tower and Smith. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, 
pp. 625-626. 1899. 
Carboniferous. Utah. Included in Coal Measures. 
Humbug formation. Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 65. 
1900. 
Carboniferous. Utah. 
Hunker series, McConnell. Can. Geol. Surv., Rept. on Klondike gold fields, pp. 
8-9. 1900. 
Canada. 
Huntingdon stone. Cox. Indiana Geol. Surv., 8th, 9th, and 10th Ann. Repts. for 
1876, 1877, 1878, p. 66. 1879. 
Indiana. 
Huron formation, Logan. Am. Jour. Sci., 2d ser., vol. xiv, pp. 224-229. 1852. 

Canada. 
Huron group, Winchell. Mich. Geol. Surv., Ist Bien. Rept. Prog., pp. 71, 139. 1861. 

Devonian. Michigan. 
Huron group, Winchell. Am. Jour. Sci., 2d ser., vol. xxxix, pp. 350-353. 1865. 
Devonian. Indiana, Ohio, Michigan. Exact syns. Black slate or shale, Genesee 
shale of New York. 



202 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19i. 

Huron jjroup, Winrhell. The (irand Traverse Region, pp. 39, 49. 1866. 

IVvonian. Michigan. 
Ilumn HhaU», Newlwrry. Ohio Geol. Surv., Rept. Prog. 1869, p. 18. 1870. 

Devonian. Ohio. Exact 8yn. Black slate. 
Huron Hhale, Newl)erry. Ohio Geol. Surv., Rept Prog. 1869, p. 19. 1871. 

Devonian. Ohio. 
Huron griti<to!ie>», Winchell. Mich. Geol. Surv., Rept. Prog., p. 35. 1871. 

Devonian. Michigan. 
Hun>ii group, Winchell. Mich. (ieol. Surv., Rept. Prog., p. 29. 1871. 

Devonian. Michigan. 
Huron shale, Andrews. C)hio lieol. Surv., Rept. Prog, in 1870, p. 58. 1871. 

Ohio. Exact nyn. Ohio Black slate. 
Huron liay slates, Brooks. Mich. Geol. Surv., vol. i, pt. i, p. 155. 1873. 

Michigan. lnclmle<l in L'Anne series. 
Huron shale, Read. Ohio Geol. Surv., vol. i, pt. i, p. 515. 1873. 

Devonian. Ohio. 
Huron shale, Ne\vl)erry. Ohio Geol. Surv., vol. i, pt. i, pp. 107, 152, 191. 1873. 

Devonian. Ohio. 
Huron shale, Newl)erry. Ohio Geol. Surv., vol. ii, pp. 188, 213. 1874. 

C'arlumiferous. Ohio. 
Ihiron Hhale, Winchell. Ohio Geol. Surv., vol. ii, pp. 243, 264, 282, 425. 1874. 

Devonian. Ohio. 
Huron shale, Andrews. Ohio Geol. Surv., vol. ii, p. 590. 1874. 

Dcvt)nian. Ohio. Exact syn. Black slate. 
Huron shale, Orton. Ohio Geol. Surv., vol. ii, pp. 616, 646. 1874. 

Devonian. Ohio. Exact syn. Black slate. 
Huron shale. Read. Ohio Geol. Surv., vol. iii, p. 307. 1878. 

Devonian. Ohio. 
Huron, Newlx»rry. Ohio Geol. Surv., vol. iii, p. 13. 1878. 

Deviniian. Ohio. 
Huron shale, Orton. Ohio (ieol. Surv., vol. iii, p. 632. 1878. 

Devonian. Ohio. 
Huron shale, (lorhy. Indiana Dept. Cieol. and Nat. Hist., 15th Ann. Rept., for 1886, 
p. 328. 1886. 

Indiana. 
Huron shale, Orton. Ohio Geol. Surv., vol. vi, pp. 4, 25. 1888. 

Devonian. Ohio. Included in Ohio shale. 
Huron shale, Newberry. Cin. Soo. Nat. Hist., Jour., vol. xii, Nos. ii, iii, p. 50. 1889. 

Devonian. Ohio. 
Huron shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 21, 22. 1893. 

Devonian. Ohio. Included in Ohio shale. 
Huronian, Logan and Hunt. Esquisse Geologique du Canada, p. 29. 1855. 

Canada. 
Huronian, Ix>gan. Can. Inst., new sen, vol. ii, pp. 439-442. 1857. 

Archean. Canada. 
Huronian, Logan. Am. Assoc. Adv. Sci., Proc, vol. ii, p. 44. 1857. 

Archean. Canada. Included in Azoic. 
Huronian series, Logan. Can. Geol. Surv., Rept. 1843-1863, pp. 50-66, 841-844. 1863. 

Archean. Canada. Include<l in Azoic. 
Huronian series, Macfarlane. Can. Geol. Surv., Rept. 1863-66, pp. 123-129. 1866. 

Archean. Canada. 
Huronian series, Hind. Am. Jour. Sci., 2d ser., vol. xlix, j>p. 347-355. 1870. 

Nova Scotia. Exa<:t syn. Cambrian. 




WBBKs.] HURON HURONIAN. 203 

Huronian, Bailey and Matthew. Can. Geol. Surv., Rept. 1870-71, pp. 59-138. 1873. 
Archean. New Brunswick. Includes Coldbrook group, Coast group, Kingston 
group. 
Huronian rocks, Irving. Am. Jour. Sci., 3il ser., vol. v, p. 286. 1873. 

Archean. Wisconsin. 
Huronian, Irving. Wis. Acad. Sci., Trans., vol. ii, 1873-74, p. 108. 1873 (?). 

Wisconsin. 
Huronian, Hitchcock. Boston Soc. Nat. Hist., Proc., vol. xv, 1872-73, p. 304. 1873. 

New Hampshire. 
Huronian rocks, Irving. Am. Jour. Sci., 3d ser., vol. viii, p. 48. 1874. 

Archean. Wisconsin. 
Huronian, Kerr. N. C. Geol. Surv., Rept., vol. i, pp. 131-139. 1875. 

Archean. North Carolina. 
Huronian, Sweet. Wis. Acad. Sci., Trans., vol. iil, 1875-76, p. 42. 1875-76. 

Wisconsin. 
Huronian, Crosby. Rept. on Geol. map of Mass., pp. 12-29. 1876. 

Massachusetts. 
Huronian rocks. Brooks. Am. Jour. Sci., 3d ser., vol. xi, pp. 206-211. 1876. 

Archean. Wisconsin. 
Huronian rocks, Bradley. Am. Jour. Sci., 3d ser., vol. xii, p. 287. 1876. 

Archean. Canada. 
Huronian rocks. Brooks. Am. Jour. Sci., 3d ser., vol. xii, pp. 194-204. 1876. 

Archean. Michigan, Wisconsin, Canada. 
Huronian, Hitchcock. Geol. of N. H., pt. ii, pp. 457-465. 1877. 

Eozoic. New Hampshire. 
Huronian group, Huntington. Geol. of N. H., pt. ii, pp. 47-50. 1877. 

Kozoic. New Hampshire. 
Huronian group, Hunt. 2d Pa. Geol. Surv., Rept. E, pp. 63-94, 189-196. 1878. 

Archean. General. 
Huronian series. Brooks. Geol. of Wis., vol. iii, pp. 439-532. 1880. 

Wisconsin. 
Huronian, Sweet. Geol. of Wis., vol. iii, pp. 330-336. 1880. 

Wisconsin. 
Huronian series, Wright. Geol. of Wis., vol. iii, pp. 239-301. 1880. 

Wisconsin. 
Huronian system, Irving. Geol. of Wis., vol. iii, pp. 100-166. 1880. 

Wisconsin. Includes xxi so-called formations bearing lithological names. 
Huronian system, Irving. Geol. of Wis., vol. iii, p. 6. 1880. 

Wisconsin. 
Huronian series. Miller. Cin. Soc. Nat. Hist, Jour., vol. iv. No. iv, p. 275. 1881. 
Huronian, Chamberlin. Geol. of Wis., vol. i, p. 80. 1883. 

Archean. Wisconsin. 
Huronian, Hitchcock. Am. Mus. Nat. Hist., Bull., vol. i, 1881-1886, pp. 16(), 167. 
1884. 
Vennont and New Hampshire. 
Huronian, Whitney and Wadsworth. Harvard Coll. Mus. Comp. Zool., Bull., vol. vii, 
1880-1884, p. 561. 1884. 
Included in Azoic system (?). 
Huronian, Irving. Am. Jour. Sci., 3d ser., vol. xxxiv, pp. 204-216, 249-263, 365-374. 
1887. 
Archean. 
Huronian, Winchell. Minn. Geol. and Nat. Hist. Surv., 16th Ann. Rept., pp. 13-40, 
145-164. 1888. 
Minnesoia. 



204 NORTH AMERICAN QEOl.OGIC EVBHATION NAMES. |bitu.ul 

EliininiBn. Wincliell, Mion. Geol.und Nat. Hiat. Sarv., 16th Ann. Rept,, pp. 145-IW. 

Uaiia<la. 
Huronian, Winuhell. Minn. (ieol. and Nat. liiat. 8urv., 18th Ana. Rept, p. 57. 1890. 

Canada. 
Huronian, Winchell. Oral. Hot;. Am., Bull., vol. ii, p. 98. 1890. 

Huronian. Canada. 
Huronian, Winirh«tl. Minn. Awd. Nat. f^^^.. vul. iii, No. ii, p. 279. 1801. 

Minnesota. 
Huronian, Pum|>elly anil Van HIbp. Am. Jonr. Bd., 3d 8er.,vol. xliii, pp. 234-232. 
1892. 

Archeati. Ontario. Incimles Upper and Lower Huronian. 
Huronian, Lualey. 2d Pa. Gtml. Kurv., Final Rept., vol. i, pp. 152-164. 1S92. 

Arohean. Penni>ylvania. 
Huronian, Van Hiee. Int. Cong, of Geo!,. 5th seas., pp. 495-506. 1893. 

Al)tonkian, Lake Superior region. Includes Upper and l»wer Huronian. 
Huronian, Barlow. Geol. Soc. Am., Bull., vol. iv, pp. 313-332. 1893. 

Huronian. Ontario. 
Huronian, Pumpelly. Geol. Soc. Am., Bull., voL iv, p. 383. 1893. 

An-liean(?). Canada (?). 
Humnian, Van Hine. Jour, of Gcol., vol. i, pp. 116-124. 1893. 

Alf^nkian. I,,ake Sui>erior. Inolwlea Upper and Lower Huronian. 
Huronian, l>aww)n. Gml. S<m'. Am., Bull., vol. v, p. 103. 1894. 

Arehean {'!). Canada, 
Huronian, Nitxe and Hanna, N. C. Geol. Knrv., But!. No. 3, pp. 'J3-S3, 4^. 1896. 

AnJiean. North Carolina. 
Huronian, Barlow. Can. Geol. 8urv., new Ber., vol. x, pp. 90 1-94 1. 1898. 

Ontario and Queliec, 
Huivnian, Lower, Van Hide. U. S, Geoi. Surv,, 19th Ann. RepL, pt. Iii, p. 16, 
1899. 

Al^unkian, Michigan. Includes Groveland, Hemlock, and Mansfield formationa, 
Bandville dolomite. Sturgeon quartzite. 
Huronian, Winchell. Minn. Geol. and Nat. Hist. Surv., 17th Ann. Rept, pp. 23, 
25. 189B. 

Minnesota. Exact ayn. Lower Cambrian of Sedgwick, 
Huronian series. Upper, Clements, U. S, Geol, Surv,, Man., vol. xxxvi, pp. 161-186. 



'lementa. U. S. Geol. Surv., Mon., vol. xsxvi, pp. 60-154- 



1.1, Soc. Am. Bull., vol. xi, pp. 107-114. 1900. 

iduilea Upiier and Lower Huronian. 

itll. N. Y. Geol, Surv,, 4th Ann. Bept., pp, 41&418, 42 



1. N,Y.GeoI.Stirv.,5th Ann. Kept., pp. 154-156, 1841, 
Phil. Acad. Nat. Sei., Proc., 1883, p. 1;15, 1883. 
m. U. H. Geol. Surv,, 20th Ann. BepL, pi. iii, pp. 98^, 
lude<l in Pliocene, 



WEEKS.] HURONIAN INTERMEDIATE. 205 

niinoian drift, Leverett. Chic. Acad. Sci., Geol. and Nat. Hist. Surv.. Bull, ii, 
pp. 14-15. 1897. 
Pleistocene. 
Illinoian till sheet, Leverett. Jour, of Geol., vol. vi, pp. 171-176. 1898. 

Pleistocene. Mississippi V^alley. 
Illinoian, Norton. Iowa Geol. Surv., vol. ix, p. 480. 1899. 

Plei8to(«ne. Iowa. 
Illinoian till, Udden. Iowa Geol. Surv., vol. ix, p. 340. 1899. 

Pleistocene. Iowa. 
Illinoian drift, Leverett U. S. Geol. Surv., Mon., vol. xxxviii, pp. 24-119. 1899.* 

Pleistocrene. Mississippi Valley. 
Illinoian, Calvin. Geol. Soc. Am., Bull., vol. x, pp. 107, 114. 1899. 

Pleistocene. Iowa. 
Illinoian drift, Leverett U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 67. 1900. 

Pleistocene. Illinois, Indiana. 
Independence shales, Calvin. Am. Jour. Sci., 3d ser., vol. xv, pp. 460-462. 1878. 

Devonian. Iowa. 
Independence shales, Calvin. Am. Geol., vol. viii, p. 142. 1891. 

Devonian. Iowa. 
Independence shale, McGee. U. S. Geol. Surv., 11th Ann. Rept, pt i, p. 320. 
1891. 
Devonian. Iowa. 
Independence shales, Keyes. Iowa Geol. Surv., vol. i, pp. 32-34. 1893. 

Levonian. Iowa. 
Independence limestone, Haworth and Piatt. Kan. Univ. Quart, vol. ii, p. 117. 
:$94. 
Carboniferous. Kansas. 
Independence limestone, Adams. Kan. Univ. Geol. Surv., vol. i, pp. 23-24. 1896. 

Carboniferous. Kansas. 
Independence shales, Calvin. Iowa Geol. Surv., vol. viii, pp. 222-224. 1898. 

Devonian. Iowa. 
Independence limestone, Haworth. Kan. Univ.^Geol. Surv., vol. iii, pp. 48-49. 
1898. 
Carboniferous. Kansas. 
Independence shale, Norton. Iowa Geol. Surv., vol. ix, p. 442. 1899. 

Devonian. Iowa. Included in Wapsipinicon. 
Indian Creek fossil bed, Broadhead. St. Louis Acad. Sci., Trans., vol. iv, p. 486. 
1886. 
Carboniferous. Kansas. 
Indian Creek bed, Drake. Texas Geol. Surv., 4th Ann. Kept, p. 386. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Indian Creek bted, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 423. 1893. 

Carboniferous. Texas. Included in Albany division. 
Indian river group, McConnell. Can. Geol. Surv., Rept. on Klondike gold fields, 
p. 8. 1900. 
Canada. 
Inoceraxnus beds, White. Iowa Geol. Surv., vol. i, pp. 293-294. 1870. 

Cretaceous. Iowa. 
Intermediate limestone, McConnell. Can. Geol. Surv., new ser., vol. ii, pp. 15D, 
19D-210. 1887. 
Devonian. Canada. 
Intemiediate steries, Cross. U. S. Geol. Surv., Geol. Atlas of U.S., Folio 57. 1899 
Colorado. 



206 NORTH AMKRICAN OEOLOOIC FORMATION NAMES. |"i n. 191 

Ittwood linieHlone, Murrill. N. Y. Stale Mint., 50th Ann. RepL, vol. i, pp. 2ft-27 
189H. 

Sihiriai). New York. Incluileil in Onloviciaii. 
Inyo marble, Hanks. Cal. Btate Min. Bur, 6th Ann. Rept., pt. i, p. 25. ISBS. 

California, 
lola liniexlune, Haworth. Kan. Univ. Quart., vol. ii, |i. 110. 1894. 

CarbiiniferonB. KanraB, 
lola linieHtune, Haworth an<l Kirk. Kan. Univ. Quart., vol. ii, p. 10!). I8M.' 

Carbon if eroiui. Kansas, 
lola limestone,. Haworth ami Piatt. Kan. Univ. Quart., vol. ii, p. 116. liSW. 

C'arl)oniferous. Kamwit. 
lola limestone, Haworth. Am. Jour. Soi., 3il ser. vol. I, p. 4.^!!. 18i)5. 

CBrlN>ni[eroiis. Kant-as. Im-luiled in Coal Measurea. 
lola limestone, Adams. Ka:i. Univ. Geol. Surv., vol, i, pp, 24, 2.i. IH96. 

Carboniferous. Kansas, 
lola limealono, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 47-48, 132-I3:t,l5»- 
159, 160. 18S6. 

Carboniferous. Kansas, 
lola limestone, Kirk. Kan. Univ. Ueol. Surv., vol. i, pp. 77-78, 1896. 

Carboniferous, Kansas. 
lola limestone, Bennett. Kan. Univ. Ueol. I^iirv., vol. i, pp. !l7-!)8. 1896. 

Carboniferous. Kansas. 
lola limestone, Haworth. Kan. Univ. Geol. Surv., vol. ill, pp. 52-54, (*, 92, "4, 
103. 1898. 

Carl>oni[erous. Kansas. Inelndetl in Pottawatomie formation. 
lola hmestone, Keyes. Am. Geol., vol. xxiti, p. 305. 1899. 

(;arlK>niferous. Miiwissippi Valley. Inrlutleil in Missourian series, 
lola limestone, Orion, (ieol. Soi'. Am. Bull., vol. x, p. 104. 181>9. 

Up]>er Carboniferous. Kansas, 
lola limestone, Keyes. Iowa Acail. St-i., Proc, vol, vii, p. 87. 1900. 

Carlioniferous. MiRHisHi|>|>i Valley. Inchnleil in Coal Measure;^. 
lone, IJndgren. U. 8, Geol. Surv., Geol. Atla.s of U. S., Folio No. 5. Id94, 

lni'lude<l in Neocene. CHlifornia. 
lone. Turner. Am. Geol., vol. xiii, [>. '£VJ. 1894. 

California, 
lone. Turner. U. S, Geol. Surv., Geol. Atla« of V. K. Folio No. II. 18!t4. 

Ineluded in Neocene, ('alifomia. 
lone formation, Turner. U. K. <ieol. Snrv., 14lh Aim. Kept., pi. ii, p. 4G2. 1fi91. 

Tertiary. Indudeil in Miocene. California, 
lone formation, Diller. V. S. Ueol. Sur%-., Hth Aim. Kept,, pt. ii, p. 41ft. 1»M. 

IneUiiieii in Nedctme. ('aliforma. 
lone, Diller. U. S. Geol. Hnrv.; <;eol. Atlas of U. S., Folio No, l."i, IHS-i. 

Included In Neocene. California, 
lone, I.indgren ami Turner, U, S, Geol. Surv., Geol. Atlas of U. S., Folio N""- "*■ 
1895. 
Included in Neocene. California, 
lone formation. Turner. U. S. Geo!. Surv., 17lh Ann. liept, pt. i, p, 540. ISSli- 

Cretaceous. California, 
lone formation, LindKren, Jour, of Geo!., vol. iv, pp. 890-891. 1896, 

Included in Miocene, California, 
lone formation. Turner and Ransome. U. S. Geol. Surv,, Geol. Atlas of U.S,, Folw 
No. 41. 1897. 

Included in Superjacent series. 



WEEKS.] INWOOD — IRON MOUNTAIN. 207 

lone formation, Dall. U. S. Geol. Surv., l«th Ann. Rept., pt. ii, p. 338. 1898. 

Tertiary. Included in Miocene. California. 
Icwa marble, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Kinderhook. 
Zcwan, formation, Chamberlin. Jour, of Geol., vol. iii, p. 273. 1895. 

Pleistocene. Included in Glacial, 
lowan stage, Upham. Am. Geol., vol. xvi, p. 104. 1895. 

Pleistocene, 
lowan drift, Norton. Iowa Geol. Surv., vol. iv, pp. 170-171. 1895. 

Pleistocene. Iowa, 
lowan epoch, Todd. Mo. Geol. 8urv., vol. x, p. 214. 1896. 

Pleistocene. Missouri, 
lowan stage, Todd. Mo. Geol. Surv., vol. x, p. 215. 1896. 

Pleistocene. Missouri, 
lowan drift, Calvin. Iowa Geol. Surv., vol. v, pp. 6^3-70. 1896. 

Pleistocene. Iowa, 
lowan, Chamberlin. Jour, of Geol., vol. iv, pp. 872-876. 1896. 

Pleistocene. Iowa, 
lowan drift, Calvin. Iowa Geol. Surv., vol. vii, pj). 86-87, 174-176. 1897. 

Pleistocene. Iowa, 
lowan, Beyer. Iowa Geol. Surv., vol. vii, pp. 234-2135. 1897. 

Pleistocene. Iowa, 
lowan drift, Leverett. Chic. Acad. Sci., Geol. and Nat. Hist. Surv., Bull, ii, p. 16. 
1897. 
Included in Pleistocene. * 

lowan loess, Leverett. Jour, of Geol., vol. vi, pp. 175-176. 1898. 

Pleistocene. Mississippi Valley, 
lowan drift, Calvin. Iowa Geol. Surv., vol. viii, pp. 170-174, 244-245. 1898. 

Pleistocene. Iowa, 
lowan, Calvin. Geol. Soc. Am., Bull., vol. x, p. 107. 1899. 

Pleistocene. Iowa, 
lowan, Norton, Iowa Geol. Surv., vol. ix, p. 483. 1899. 

Pleistocene. Iowa, 
lowan, Beyer. Iowa Geol. Surv., vol. ix, p. 200. 1899. 

Pleistocene. Iowa, 
lowan drift, Leverett. U. S. Geol. Surv., Mon., vol. xxxviii, pp. 131-184. 18?)9. 

Pleistocene. Mississippi Valley, 
lowan drift, Calvin and Bain. Iowa Geol. Surv., vol. x, p. 470. 1900. 

Pleistocene. Iowa, 
lowan drift, Williams. Iowa Geol. Surv., vol. x, p. 361. 1900. 

Pleistocene. Iowa, 
lowan, Beyer. Iowa Geol. Surv., vol. x, p. 280. 1900. 

Pleistocene. Iowa. 
Iron Mountain series, Dumble. Texas Geol. Surv., Ist Ann. Ropt., pi. iii, p. Ivii. 
1890. 
Archean. Texas. Included in Fernandan svsteiii. 
Iron Mountain porphyry, Keyes. Mo. Geol. Surv., vol. iv, p. 30. 1894. 

Archean. Missouri. 
Iron Mountain conglomerate, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Cambrian. Missouri. Include<l in Ozark series. 
Iron Mountain porphyry, Keyes. Mo. Geol. Surv., Sheet Rept., No. iv, p. 18. 1895. 
Archean. Missouri. 



208 NORTH AMEKICAH GEOLOGIC FORMATION NAMES. [i.tLi.i.1. 

Iron Mountain conitloinente, WumIow. V. 8. Geol. Sur\'., Bull. No. 132, p. \2. 
1R96. 

Miiwouri. 
Iron Mountain porphyry. Keyee. Mo. Geol. Suit., vol. is, Sheet RepL. No. iv., 
pp. l8-ie, 32-37. J896- 

.\rr;hean. Mineouri. 
IroniUlB limestone. While. U. S. (ieol. Surv., Boll. No. 65, p. 96. ISDl. 

CartioniferouB. Wcet Virginia. Inclui)e<l in Barren Measures, Elk River series. 
Iroquoia statK. t'pliam. Am. Geol., vol. ivi, p. lOtt. 1895. 

Pleistocene. Inclu<leil in Ghainplain epoch. 
Irvine formation, Campbell. U. S. Geul. 8urv., GeoL Atlas of U. S., Folio NV 46. 

I89S. 

Included in Neoi-ene(?). Kentucky, 
lahpeming fonnation. Van Hise and Bayley. U. S. GeoL Surv., 15th Ann. RepL, 
p. .S90. 1K95. 

Alfionkian. I^ke Superior region. Included iu Upper Marquette series, iQclndw 
(iiHHirich quartzit«, Bijiki echist. 
Ishpeniing formation, Van llise. II. H. Geol. Surv., Mon., vol. xxviii, pp, 40fM43. 
13.47. 

Algonkian. Michigan, Incluileil in Tpper Marquette series. Includes Goodrich 
■luartzite, Bijiki schist. 
]sli|>eming formation, Van Hise. U. H. Geol. Surv., 19th Ann, Bept., pL lii, p. 16- 
IKW. 

.\lgonkian. Michigan. Included in Upper Marquette series. 
Island series, Waitl. V. S. Geol. Surv., 15th Ann. Rept., pp. 335, 336. 1895. 

Cretaceous. New Jersey. Include<l in Potomac, Albirupean. 
Island series. Hollick. Geol. ikx: Am., Bull., vol. vil, p. 12. 1895. 

Cretaceous. Massachusetts. Includeil in .\nd>oy claj-s. 
Isle Laniotte, Emmons. Agric. of N. Y., vol. i, p. 123, 1846. 

Silurian, New York. Includetl In Champlain division of New York system. 
Isle Lamotte marble. Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 182, 183. 1890. 

.Arkansas. 
Itasca moraine, EHtmsn. Atn. Geol.. vol. xxi, p. 93. 1898. 

Pleistocene. Minnesota. 
Ithaca group, Hall. N. Y.tieol.Siirv., 3.1 Ann. Kept., pp. 318-320, 325. 1838, 

IX'Vonian. New York. 
Ithaca group, Yanuxeni. Geiil. of New York, pt. iii, pp. 174-178. 1842. 

Paleozoic, New York. Induileil in New York system. 
Ithaia, Conrad, Phil. Acad. Nat. Sci., Jour,, vol. viii, pp. 232, 234. 1842. 

Devonian. New York, Incluiles Lower division. 
Ithaia group, Hall. Geo!, of N. Y., pt, iv, 4tli Geol. Dist., p. 250. 1843. 

Paleozoic. New York, lucludcil in Chemung group, 
Ithaca group, Emmons. Agric. of S. Y., vol. i, pp. 190-19;!. 1846. 

Devonian. New York. Included in (.'atskill division of New York system. 
Ithaca shale, Williams. Am. Assoc. Adv. Sci., Proc.,vol. xxx, pp. 186-191. ISSZ, 

Devonian. New York. 
Ithaca group, Lesley. 2d Pa. Geol. Surv.. Final Kept., vol. ii, p. 1370. 1892. 

Devonian. Pennsylvania. Exact syn. Cheinung. 
Ithata group, Clarke. N. Y. State Geol,, 13th Ann. Kept, pp. 552-656. ISM. 

Devonian. New York. 
Ithara. Kindle. Am. Pal., Bull. 2, pp. 1-54. 1895. 

Devonian, New York. Included in Upper Devonian, 
thaca, Kindle. Am, Pal., Bull, vol. ii, no. vi, p. 5. 1896. 



WEKK8.] IRON MOUNTAIN JACKSON. 209 

Ithaca group, Clarke. N. Y. State Geol., 15th Ann. Rept., pp. 27-82. 1897. 

Devonian. New York. 
Ithaca formation, Proseer. N. Y. State Geol., 15th Ann. Repf., pp. 87-94. 1897. 

I>evonian. New York. 
Ithaca formation, Prosser. N. Y. State Geol., 17th Ann. Kept., p. G8 et seq.; N. Y. 
State Mu8., Slst Ann. Kept., vol. ii, p. 68 et seq. 1899. 

Devonian. New York. 
Izaxd limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv., pp. 50, 108-115. 1890. 

Silurian. Arkansas. 
Izard limestone, Penrose. Ark. Geol. Surv., 1890, vol. i, p. 121. 1890. 

Silurian. Arkansas. 
Jackass Mountain conglomerate groifp, Selwyn. Can. Geol. Surv., Rept. 1871-72, 
p. 60. 1872. 

British Columbia. 
Jackafis Mountain group, Dawson. Can. Geol. Surv., Rept. 1875-76, pp. 253-255. 
1877. 

Cretaceous. British Columbia. Exact syn. Shasta group in California. 
Jackal Mountain group, Dawson. Can. Geol. Surv., Rept. 1877-78, pp. 108B-112B. 
1879. 

Cretaceous. British Columbia. Exact syn. Tatlayoco group. Part syn. Shasta 
group of California. 
Jackson group, Conrad. Phil. Acad. Nat. Sci., Proc., vol. vii, p. 257. 1856. 

Eocene. Mississippi. 
Jackson group, Hilgard. Rept. on Geol. and Agric. Miss., pp. 128-135. 1860. 

Eocene. Mississippi. 
Jackson group, Hilgard. Am. Jour. Sci., 2d ser., vol. xliii, pp. 29-33. 1867. 

Tertiary. Alabama and Mississippi. 
Jacksonian, Heilprin. Phil. Acad. Nat. Sci., Proc, 1882, p. 184. 1882. 

Eocene. Exact syns. Jackson beds of Mississippi, White limestone of Alabama. 
Jacksonian, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 116, 120, 145, 147-148. 
1884. 

Tertiary. Included in Eocene. Exact syns. Jackson beds of Mississippi, White 
limestone of Alabama. 
Jackson, Meyer. Am. Jour. Sci., 3d ser., vol. xxx, pp. 60-72, 421-435. 1885. 

Tertiary. Gulf States. 
Jackson group, Aldrich. Cin. Soc. Nat. Hist., Jour., vol. viii, p. 256. 1886. 

Tertiary. 
Jackson, dark. U. S. Geol. Surv., Bull., No. 83, pp. 68, 76. 1891. 

Tertiary. Mississippi, Louisiana. Included in Eocene, White limestone. 
Jackson, Langdon. Geol. Soc. Am., Bull., vol. ii, p. 588. 1891. 

Tertiary. Alabama. Included in Upper Eocene. 
Jackson, Spencer. Ga. Geol. Soc., 1st Rept. of Prog., 1890-91. 1891. 

Tertiary. Georgia. Included in White limestone. 
Jackson coal group. Lane. Mich. Geol. Surv., Rept. State Board for 1891, 1892, 
p. 66. 1893. 

Carboniferous. Michigan. 
Jackson stage, Harris. Ark. Geol. Surv., 1892, vol. ii, pp. 87-176. 1894. 

Tertiary. Arkansas. 
Jackson stage, Vaughan. Am. Geol., vol. xv, p. 221. 1895. 

Tertiary. Louisiana. Included in Eocene. 
Jackson coal group. Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 14. 1895. 

Coal Measures. Michigan. Includes Woodville and Parma sandstones, with the 
intervening coal-t)earing strata. 

Bull 191—02 U 



210 NORTfl AMERICAN GE(H^>OIC FORMJkTION NAMES. lBrLL.19L 

Jackaon 8Ugt*, Vaughan. V. S. (ie<>l. Surv., Ball., No. 142, p. 22. 1896. 

Tertiary. Louisiana. Imliule«l in Eocene. 
Ja<'kHon Heries, Lane. V. S. (ieol. Sur\\, Water-Supply Papers No. 30, pi. vi. 1899. 

CarlK»niferou?. Michi^n. Exact sj-n. Coal Measnires, 
Jai'ktKin 9ta^, Harris an<l Veateh. La. State Exp. Stat., pt. v, p. 89. 1899. 

Tertiary. Louisiana. Inclii«le«l in Rn-ene. 
Jat'k.*«4miaa Mtajre, Vaughan. V. S. (ieol. Surw, Mon., vol. xxxix, p. 30. 1900. 

Tertiary, (iulf State**. 
Jackaonboro limestone, I)all and Harris. U. S. Geol. Sur\-., Bull. 84, p. 83. 1892. 

Tertiary. Georgia. 
JacksonviUe linie>tone, Dall an<l Harris. U. S. Geol. Surv., Bull. 84, p. 124. 1892. 

Tertiarv. Florida. Includeil in Miocene. 
Jagrger bend l)eil, Drake. Texas Get)l. Sur\'., 4th Ann. Kept,, p. 426. 1883. 

CarlK>niferous. Texas. Included in Alhanv division. 
James River series, Wanl. V. S. Get>I. Sur\'., 15th Ann. Kept,, p. 318. 1895. 

Cretaceous. Virginia. Includeil in Potomac. Exart syn. Basal clays. 
Jamesbur^, Salisbury. N. J. Geol. Sur\'., Kept,, 1893, pp. 60-67, 67-72. 1894. 

Pleistocene. New Jersey. Includeil in Yellow gravel. 
Jameslnirg formation, Salisbury. Geol. Soc. Am., Bull., vol. \i, p. 483. 1895. 

Pleist<x»ene. New Jersev. 
Janiesburg formation, Salisbury. N. J. State Geol., Ann. Kept, for 1894, pp. 119-130. 
1895. 

PleistcK^ne. New Jersev. Exact svn. Columbia. 
Janiesburg formation, Salisbury. N. J. Geol. Surv., Kept. 1895, pp. 13-16. 1896. 

New Jersev. 
Jefferson, Peale. U. S. Geo). Surv., Bull., No. 110, pp. 25, 27. 1893. 

Devonian. Montana. 
Jefferson City limestone, Keyes. Mo. Geol. Surv., vol. vi, pp. 337, 373-375. 1894. 

Cambrian. Missouri. Includeil m Gasconade limestone, Ozark series. Part. syn. 
Potosi limestone. 
Jefferson limestone, Iddings and Weeil. U. S. Geol. Surv., iieol. Atlas of U. S., 
Folio No. 1. 1894. 

Devonian. Montana. 
Jefferson, Peale. U. S. Geol. Sur\'., Geol. Atlas of U. S., Folio No. 24. 1896. 

Devonian. Montana. 
Jefferson limestone, Weed. V. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 30. 1896. 

Silurian. Wyoming. 
Jeffers<^>n, Weeil an<l Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 37. 1896. 

Silurian. Montana. 
Jefferson formation, Wee<l. U. S. Geol. Surv., 18th Ann. Kept., pt iii, pp. 469-470. 
1898. 

Silurian. Montana. 
Jefferson limestone, Hague. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 52. 
1899. 

Silurian. Wyoming. 
Jeffers<Hi limestone, ld<lings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 

Silurian. Yellowstone Park. 
JefUtmm limestone, Weed. V. S. Geol. Surv., 20th Ann. Kept., pt. iii, p. 287. 1900. 

Siluro-Devonian. Montana. 
Jenkins Clay, Cragin. Am. Geol., vol. xxx, pp. 356-358. 1897. 

Permian. Kansas, Oklahoma. Included in Cave Creek formation of Cimarron 
eeriew. 



k. 



WEEKS] JACKSON — JOLLYTOWN. 211 

Jenningrs, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 14, 32. 1894, 
1896. 
Devonian. Virginia, West Virginia. Exact syns. Chemung, Rogers* Vergent. 
Part syn. Rogers No. viii. 
Jennings, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 
1896. 
Devonian. West Virginia, Maryland. 
Jennings, Taff and Brooks. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 34. 
1896. 
Devonian. West Virginia. 
Jennings formation, Clark. Md. Geol. Surv., vol. i, pp. 157, 183. 1897. 

Devonian. Maryland. Exact syn. Chemung group. 
Jennings formation, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 61. 
1899.. 
Devonian. Virginia, West Virginia. 
Jennings fonnation, O'Harra. Md. Geol. Surv., Allegany County, p. 106. 1900. 

Devonian. Maryland. 
Jenisalem, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 42. 1889. 

Cretaceous. Jamaica. Included in Blue Mountain series. 
Joachim limestone, Keyes. Mo. Geol. Surv., vol. vi, pp. 331,352. 1894. 

Silurian. Missouri. Included in Trenton. 
Johannian, Walcott. U. S. Geol. Surv., Bull. No. 81, p. 249. 1891.- 

Cambrian. New Brunswick. 
John Day, Marsh. Am. Jour. Sec, Sdser., vol. ix, p. 52, 1875. 

Tertiary. Oregon. 
John Day, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 281. 1892. 

Tertiary. Oregon. Exact syn. (?)Truckee group. 
John Day, Russell. U. S. Geol. Surv., Bull. No. 108, p. 22. 1893. 

Tertiary. Washington. Included in Miocene. 
Johnson gravel, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Tertiary. California. Included in Miocene. 
Johnson river sandstone, Ashburner. 2d Pa. Geol. Surv., Rept. R*, p. 387. 1885. 

Carboniferous. Pennsylvania. 
Johnstown cement bed, Piatt. 2d Pa. Geol. Surv., Rept. H*. 1878. 

Carboniferous. Pennsylvania. 
Johnstown cement limestone. Chance. 2d Pa. Geol. Surv., Rept. V*, pp. 43—14. 1880. 

Carboniferous. Pennsylvania. Included in Kittanning group. 
Johnstown cement bed, Piatt. 2d Pa. (leol. Surv., Rept. H^ p. 318. 1880. 
Carboniferous. Pennsylvania. Exact syn. Kittanning upper limestone. 
Johnstown cement bed, Ashburner. 2d Pa. Geol. Surv., Rept. R'^ p. 387. 1885. 

Carboniferous. Pennsylvania. 
Johnstown cement limestone, White. U. S. Geol. Surv., Bull. No. 65, p. 165. 1891. 
Carboniferous. Pennsylvania. Included in Lower Coal Measures, Allegheny River 
series. Exact syn. Johnstown cement. 
Johnstown cement. White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Upper Carboniferous. West Virginia. Included in Lower Coal Measures. 
Joliet marble, Schufeldt. Am. Jour. Sci., 2d ser., vol. xi, p. 389. 1865. 

Silurian. Illinois. 
Jollytown limestone. White. U. S. Geol. Surv., Bull. No. 65, p. 34. 1891. 

Carboniferous. Pennsylvania. Included in Permo-Carboniferous, Dunkard Creek, 
''ollytown sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pt. ii, p. 2573. 
1895. 
Carboniferous. Pennsylvania. Included in Washington County group. 



212 NORTH AMERICAN GEOLOGIC BORMATION NAMES. [bull.191. 

Jonesboro quarry rock-strata, Engeltnann. St. Louis Acad. Sci., Trans., vol. ii, 
p. 190. 1868. 
l^wer Carboniferous. Illinois. 
Jordan sandstone, Winchell. Minn. (ieol. and Nat Hist. Surv., 2d Ann. Rept., 
pp. 147-152. 1874. 
Lower Silurian. Minnesota. Included in Ix)wer Magnesian limestone. 
Jonlan sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. ^pt., 
p. 35. 1876. 
Ivower Silurian. Minnesota. Included in Lower Magnesian limestone. 
Jonlan sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., 8th Ann. Kept., p. 105. 
1880. 
Lower Silurian. Minnesota. 
Jordan sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. i, 
p. 426. 1884. 
Minnesota. 
Jordan sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. i, 
p. 636. 1884. 
Minnesota. 
Jordan sandstone, Harrington. Minn. Geol. and Nat. Hist Surv., Final Rept, vol. i, 
p. 335. 1884. 
Cambrian. Minnesota. 
Jordan sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. i, 
pp. 220, 252, 284. 1884. 
Minnesota. 
Jordan sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. ii, 
pp. 71, 381. 1888. 
Cambrian. Minnesota. 
Jordan sandstone, Upham. Minn. Geol. and Nat. Hist Surv., Final Rept, vol. ii, 
pp. 121, 161. 1888. 
Minnesota. 
Jordan sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. ii, 
p. xxi. 1888. 
Minnesota. Included in St. Croix. Exact syn. Madison sandstone. 
Jordan sandstone. Hall. Minn. Acad. Nat. Sci., Bull., vol. iii. No. 1, p. 133. 1889. 

Cambrian. Minnesota. Exact syns. Madison sandstone. Second sandstone. 
Jordan sandstone. Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 341. 1892. 

()rdovician(?). Minnesota. Included in Magnesian series. 
Jordan sandstone, Keyes. Iowa Geol. Surv., 1st Ann. Plept, vol. i, p. 23. 1893. 
Cambrian. Iowa. Included in St. Croix sandstone. Exact syn. Madison 
sandstone. 
Jordan sandstone. Hall and Sardeson. Geoi. Soc. Am., Bull., vol. vi, pp. 167, 175. 
1895. 
Upper Cambrian. Minnesota. Included in Magnesian series. 
Judith Ixjds, Meek and Hayden. Phil. Acad. Nat. Sci., Proc., vol. xiii, p. 417. 
1862. 
Tertiary. 
Judith River beds, Coi)e. U. S. Geol. and Geog. Surv. of Terr., Bull. 2, p. 8. 1874. 

Cretaceous. 
Judith River, Cope. U. S. Geol. and Geog. Surv. of Terr., 7th Ann. Rept, p. 434. 
1874. 
Cretaceous. Montana. 
Judith River beds, Peale. U. S. Geol. and Geog. Surv, of Terr., 8th Ann. Rept, p. 155. 
1876. 
Cretaceous. Wyoming and Utah, 



i 



WEEKS.] JOXESBORO KANSAX. 213 

Judith River groap. Meek. U. S. GeoL and Geog. S«irv. of Terr., Hon., vol, ix, 
pp. xlvii-lv. 1876. 
Cretaceous. 
Judith River formation. Cope. U. S. Geol. and Geotar. Sunr. of Tetr., Ball., vol. iii, 
pp. 565-569. 1877. 
Cretaceoos. Montanm. Exact ^vn. Fort Pierre. 
Judith River group. Stembens. Kansas City Rev., vol. iv. pp. 730-733. ISSl. 

Cretaceoos. Montana. 
Juniata, Barton. U. S. GeoL Sarv., <icol. .\tUtf of U. S., Folio No. 32. 1896. 
Silurian. Viiginia and Weet Miginia. Part. s%ti«. Medina, Roger?' No, iv, and 
Levant. 
Juniata, Darton and T*ff. U. S. Geol. Sorv., Geol. AtU» of U. S., Folio No. 28. 
1896. 
Silurian. West Virginia and Maryland. 
Juniata formation, Clark. Md. Geol. Surv., vol. i, pp. 157, 180-181. 1897. 

Silurian. Maryland. Exact, syn. Re«l Me«lina sandi^tftne. 
Juniata, Clark. Md. Geol. Sarv., vol. iii, p. 99. 1899. 

Silurian. Maryland. Part syn. Red Me^lina. 
Juniata formation, Darton. U. S. Geol. Sur\'., Geol. Atlas of U. S., Folio No. 61. 
1899. 
Silurian. Vii^g^nia and West Virginia, 
Juniata formation, CHarra, Md. Geol. Surv., Allegany County, p. 86. 1900. 

Silurian. Marvland. 
Kaministiquia formation. Chapman. Can. Inst., new ser., vol. viii, pp. 186-190. 
1863. 
Cambrian. Canada. Included in Potsdam group, Lower Silurian. 
Kaministiquia, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Algonkian. Ontario. Included in Huronian. 
Kanawha Coal Measures, Piatt. 2d Pa, Geol. Sur\'. No. 2, p. xxvi. 1877. 
Kanawha black flint. White. U. S. Geol. Surv., Bull. No. 65, p. 98. 1891. 

Carboniferous. West Virginia. Included in Barren Measures, Elk River series. 
Kanawha Falls sandetcme, White. Geol. Soc. Am., Bull., vol. vi, p. 306. 1895. 

Upper Carboniferous. West Virginia. Include<l in Pott«ville formation. 
Kanawha formation, Campbell and Mendenhall. U. S. GeoL Surv., 17th Ann. Rept., 
pt. ii, p. 499. 1896. 
Carboniferous. WestVirgimia. Exactsyns. Rogers' xiii. Lower Productive Measures. 
Kanawha series. White. Geol. Soc. Am., Bull., vol. xi, pp. 157-170. 1900. 

Carboniferous. Pennsylvania. 
Kanawha formation, Campbell. V. S. Geol. Sur\\, Geol. Atlas of U. S., Folio No. 69. 
1900. 
Carboniferous. West Virginia and Ohio. Exact syn. Allegheny River Coal series. 
Kanektok silts and gravels, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, 
p. 177. 1900. 
Pleistocene. Alaska. 
Kansan formation, Chamberlin. Jour, of Geol., vol. iii, pp. 271-272. 1895. 

Pleistocene. Included in Glacial. 
Kansan drift, Norton. Iowa Geol. Surv., vol. iv, p. 169. 1895. 

Pleistocene. Iowa. 
Kansan stage, Upham. Am. Geol., vol. xvi, p. 103. 1895. 

Pleistocene. 
Kansan epoch, Todd. Mo. Geol. Surv., vol. x, p. 213. 1896. 

Pleistocene. Missouri. 
Kansan drift, Calyin. Iowa Geol. Surv., vol. v, pp. 63-70. 1896. 
Pleistocene. Iowa. 



214 NORTH AHKRICAN GKOUKIIC FOKHATIOK NAME3. [Bvu^m 

Kunean furmatioii, Beyt-r. luwa Oeol. Surv., vol. v, p. 203. 1896. 

I'leixUiLf lie. lowu. 
Kansan drift, Bain. Iowa Oeol. Kurv., vol. v, pp. 153-155. 1896. 

Pleintoi'ene. Iowa. 
KaiiHan, ChainWIiii. Jour, nf Geol., vol. iv, pp. 8T2-8Tfl. 1896. 

rieistjNi-iie. KatiHas, 
Kaiinan, lU-niliey. Am. 4ieol., vol. xix, pp. Il(7'209. imi. 

PIciMbNi'iK'. illitioiH. 
Kant«in ilrifl. i^vfrvlt. Cliiir. A<ail. S<i., Ceol. and Nat. Hist. Surv., Bull, ii, p. 14. 
1S117. 

riciHtiK^cne. 
Kansan drift, Calvin. Iowa Gi-ol. Knrv., vol. vii, pp. 83-86, 171-172. 1897. 

Pli'ittliK-eiie. Kiwa. 
KaiiHan, Ik-ypr. Iowa Geol. Surv.. vol. vij, pp. 232-2S3. 1897. 

I'leistort-ne. loua. 
Kansan lirid, Bain. Iowa Geol. Surv., vol. vi, pp. 433-167. 1897. 

Pk'iiitiHH'ne. Iowa. 
Kaneuii drift, Pre-, Rain. Iowa Geol. Sun., vol. vii, pp. ;i35-338. 1897. 

Pleistoifnf. Iowa. 
Kanxan drift, Bain. Iowa (it'ol. Surv., vol. vii, pp. 338-340, 460-463. 1S97. 

Plcistoi-eui'. Iowa. 
Kanmn ilrif), Tilton and Bain. lowutieol. Surv., vol. vii, pp. 521-522. 1897. 

PleistiH'cne. Iowa. 
Kansan drift, I^onanl. Iowa Geol. Surv., vo). viii, pp. 84-85. 1898, 

Pleisloct'ne. Iowa. 
Kanxiiu drift, Calvin. Iowa Gwl. Surv., vol. viii, pp, 165-167, 239-241. 1898. 

PleiatOfenc. Iowa. 
Kansan drift. Bain. Iowa tiiH)!. Surv., vol. viii, pp. 283-292, 1898. 

Pleistocene. Iowa. 
Kansan drift, Williania. Am. I'liil. Soc, Proc, vol. xxxvii, pp. 84-87. lt«8, 

Pleistoi-ene. Pennsylvania. 
Kansan, Calvin. Geol. Siw, Am,, Bull., vol. x, pp. 107, 114. 1899, 

Pleistmviie. Iowa, 
Kansan drift. Bain. Iowa (ieol. Sun-,, vol, ix, p, 76, 1899. 

PleisIiM-cue. Iowa, 
Kansan drift, Mai-bride. Iowa Geol. Surv.. vol. i\, p. 137. 1899. 

I'leistooenc. Iowa. 
Kansan, Beyer. Iowa Geol. Surv., vol. ix, p, 196. 1899. • 

Pleistocene. Iowa. 
Kansan till, Cdden. Iowa Geol. Surv., vol. ix, [>, 339. 1899. 

Pleistoeene. Iowa. 
Kansan, N'orton. Iowa Geol. Surv., vol. ix. p. 475. 1890. 

Pleisto<-ene, Iowa. 
Kansan drift, Macbride. Iowa Geol. Surv,, vol, x. p. 218. 1900. 

Pleistocene. Iowa. 
Kansan, Beyer. Iowa Geol. Siirv.. vol, x, p, 2T9. 1900. 

Pleistoeene. Iowa. 
' Kansan drift, Williams. Iowa Geol. Surv,, vol, x, p. 3o8. 1900. 

Pleisl.x:ene, Iowa, 
Kansan drift, Calvin and Bain. Iowa Geol. Surv., vol, -t, p. 463. 1900. 
"istowtne. Iowa, 

1 (Sty (jolile, Broadhead. SI. l.ouis .\(-ad, i^-i,, Trans., vol. iv, p. 483. 1888. 

Ilaher Mo. Geol, Surv,, Bien, Rept., p. 51. 1898. 
iliswjuri, Ini'ludtd in I'pjier Coal Measures. 



WKEKFl KANSAN — KEEWATIN. 215 



I, Hall. Am. Assoc. Adv. Sci., Proc., vol. x, p. 56. 1866. 

Carboniferous. Mississippi Valley. Exact syn. Upper Archimides. 
Kaskaskia limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, p. 405. 1857. 

Lower Carboniferous. Missouri. Included in Mountain limestone. 
Kaskaskia limestone, Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 107-119. 1858. 

Carboniferous. Iowa. Exact syns. Archimides limestone, Pentremital limestone. 
Kaskaskia limestone. Hall. Iowa Geol. Surv., vol. i, p. 107. 1858. 

Carboniferous. Iowa. Exact syns. Archimides limestone, Pentremital limestone. 
Kaskaskia limestone. Hall. Albany Inst, Trans., vol., iv, pp. 2-3. 1864. 

Carboniferous. Mississippi Valley. Exact syn. Upper Archimides limestone. 
Kaskaskia limestone, Engelmann. St. Louis Acad. Sci., Trans., vol. ii, p. 189. 1868. 

Lower Carboniferous. Illinois. 
Kaskaskia group. Miller. Sin. Soc. Nat. Hist, Jour., vol. iv. No. iv, p. 284. 1881. 
Kaskaskia group. Miller. N. A. Geol. and Pa., p. 73. 1889. 
Kaskaskia beds, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 295. 1892. 

Lower Carboniferous. Missouri. Includes Aux Vases sandstone, Kaskaskia lime- 
stone and Shale. Exact syn. Chester. 
Kaskaskia beds, Keyes. Iowa Geol. Surv., 1st Ann. Rept, vol. i, pp. 74-77. 1893. 

Carboniferous. Iowa. Included in Mississippian series. Includes Aux Vases 
sandstone. Exact syn. Chester. 
Kaskaskia stage, Keyes. Mo. Geol Surv., vol. iv, pp. 30, 72, 76. 1894. 

Lower Carboniferous. Missouri. Includes Chester shales, Kaskaskia limestone 
and Aux Vases sandstone. 
Kaskaskia stage, Keyes. Mo. Geol. Surv., vol. vii, pt ii, p. 390. 1894. 

Lower Carboniferous. Missouri. Included in Mississippian. Includes Chester 
shale, Kaskaskia limestone and Aux Vases limestone. 
Kaskaskia limestone, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 74-76. 1894. 

Lower Carboniferous. Missouri. Included in Kaskaskia stage. 
Kaskaskia limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Lower Carboniferous. Missouri. Included in Kaskaskia stage. 
Katemcy series, Dumble. Texas Geol. Surv., 1st Ann. Rept, pi. iii, p. Ixi. 1890. 

Cambrian. Texas. Exact syn. Potsdam. 
Katemcy series, Comstock. Texas Geol. Surv., Ist Ann. Rept., pp. 289-291. 1890. 

Cambrian. Texas. Exact svn. Potsdam. 
Katemcy series, Comstock. Texas Geo). Surv., 2d Ann. Rept, pp. 564-565. 1891. 

Cambrian. Texas. Included in Upper Cambrian. Exact syn. Potsdam. 
Katemcy, Walcott U. S. Geol. Surv., Bull. No. 81, p. 246. 1891. 

Cambrian. Texas. 
Kearsar^e andalusite group, Hitchcock. Geol. of New Hampshire, pt. ii, pp. 585- 
588, 627. 1877. 

Paleozoic. New Hampshire. 
Kearsarge group, Hitchcock. Am. Mus. Nat. Hist, Bull., vol. i, 1881-86, p. 179. 
1884. 

Vermont and New Hampshire. 
Kearsarge schists, Hitchcock. Jour, of Geol., vol. iv, p. 54. 1896. 

Algonkian or Cambrian. New Hampshire. 
Kearsarge conglomerate, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, p. 85. 1898. 

Algonkian. Michigan. 
Keewatin series, Lawson. Can. Geol. Surv., new ser., vol. i, pp. 10CC-15CC, 
61CC-85CC, 101CC-130CC. 1886. 

Archean. Canada. Part. syn. Huronian(?). 
Keewatin, Winchell. Minn. Geol. and Nat Hist Surv., 16th Ann. Rept, 336-344. 
1888. 

Minnesota. 



216 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

• 

Keewatin series, Winchell. Minn. iJeol. and Nat. Hist Surv., 17th Ann. Rept, pp. 14, 
19. 1889. 
Huronian. Minnesota. 
Keewatin HohiHti^, Winchell. Minn. (leol. and Nat. Hist. Surv., 17th Ann. Rept. p. 37. 
1889. 
MinntiHota. 
Keewatin wrien, I^wHon. Can. Geol. Surv., new ser., vol. iii, pt. i, pp. 22F-99F. 
1889. 
A rcliean . (^anada. 
Keewatin, Winchell. Cieol. Soc. Am., Bull., vol. ii, p. 109. 1890. 

Huronian (?). Canada. 
Keewatin, Winchell. Minn. Acad. Nat. Sci., vol. iii, pt. ii, p. 278. 1891. 

Minnesota. 
Keewatin series^, Smith. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 17G, 56G-70G. 
1893. 
Archean. Canada. Part. syn. Huronian (?). 
Keewatin series, Ontario. Geol. Soc. Am., Bull., vol. iv, pp. 333, 341, 342-344. 1893. 

I^urentian. Ontario. 
Keewatin series, Spurr. Minn. Geol. and Nat. Hist. Surv., 22d Ann. Rept, p. 120. 
1894. 
Minnesota. 
Keewatin, Grant. Science, vol. xxiii, p. 17. 1894. 

Huronian (I^)wer). Minnesota. 
Keewatin, Selwyn. Science, vol. xxiii, p. 107. 1894. 

Silurian. Canada. Included in Quebec group. 
Keewatin, Winchell and Grant. Minn. Geol. and Nat. Hist. Surv., 23d Ann. Kept, 
p. 63. 1895. 
Minnesota. Included in Ontarian. 
Keewatin, Mclnnes. Can. Geol. Surv., new ser., vol. x, pp. 18H-20H. 1898. 

Ontario. 
Keewatin, Coleman. Geol. Soc. Am., Bull., vol. ix, p. 224. 1898. 

Algonkian. Ontario. Inclu<led in Ontarian. 
Keewatin, Grant Minn. Geol. and Nat Hist Surv., Final Rept, vol. iv, p. 178. 
1899. 
Minnesota. 
Keewatin, Grant ^linn. Geol. and Nat Hist Surv., Final Rept, vol. iv, pp. 423, 
4«7. 1899. 
Archean. Minnesota. 
Keewatin, Winchell and (irant Minn. Geol. and Nat Hist Surv., Final Rept, 
vol. iv, p. 199. 1899. 
Minnesota. Included in Ontarian. 
Keewatin, Winchell. Minn. Geol. and Nat Hist Surv., Final Rept, vol. iv, pp. 270, 
384, 524. 1899. 
Minnesota. Includes Upper and Lower Keewatin. 
Keewatin (in part), Walcott Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 
Algonkian. Ontario. Included in Lower Huronian. Part syns. Lower Vennil- 
ion, Lower Marquette, Felch Mountain, Menominee, and Black River Falls 
schist. 
Keewatin, lower, Winchell. Minn. Geol. and Nat Hist Surv., Final Rept, vol. v, 
D. 13. 1900. 
in. Minnesota. Exact syn. Kawishiwin series, 
lup, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 234. . 1892. 
Alaska. Includes Unga conglomerate, Lignitic beds. - 



WEEKS] KEEWATIN KEOKUK. 217 

Kenai group, Knowlton. Geol. Soc. Am., Bull., vol. v, p. 587. 1894. 

Tertiary. Alaska. Included in Eocene. 
Kenai formation, Dall. U. S. Geol. Surv., 17th Ann. Kept, pt. i, pp. 772, 836. 
1896. 

Tertiary. Alaska. Included in Oligocene. 

Kenai series, Emmons. Nat. Geog. Mag., vol. ix, p. 158. 1898. 

Tertiary. Alaska. Included in Eocene. 
Kenai series, Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 184-195. 1898. 

Tertiary. Alaska. Includeti in Eocene. 
Kenai group, Dall. U. S. Greol. Surv., 18th Ann. Rept., pt. ii, p. 345. 1898. 

Tertiary. Alaska. Included in Chichasawan stage. Eocene. 
Kenai formation, Smith. Jour, of Geol., vol. viii, pp. 456-457. 1900. 

Tertiary. Alaska. Included in Eocene. 
Kenai fonnation, Eldridge. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 16-17. 
1900. 
Tertiary. Alaska. Included in Oligocene. 
Kenai series, Schrader. U. S. Geol. Surv., 21st Ann. Rept, pt. ii, p. 477. 1900. 

Alaska. 
Kendall Green slate, Hobbs. Am. Geol., vol. xxiii, p. 110. 1899. 

Cambrian. Massachusetts. 
Kennett limestone and shale, Smith. Jour, of Geol., vol. ii, ^p. 591-593. 1894. 

Devonian. California. Included in Sacramento formation. 
Kennett limestone. Rand. Phil. Acad. Nat. Sci., Proc., 1900, pp. 235-242. 1900. 

Pennsylvania. 
Kentucky shale, Shaler. Ky. Geol. Surv., new ser., vol. iii, pp. 183-186. 1877. 

Carboniferous. Kentucky. Includes Subconglomerate Coal Measures. 
Kentucky marble, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Mont- 
gomery counties, 1884. 
Silurian or Cambrian. Kentucky. Included in Birdseye limestone. 
Keniprood beds, Norton. Iowa Acad. Sci., Proc, vol. i, pt. iv., p. 23. 1894. 

Devonian. Iowa. Exact syn. Independence shale. 
Kenwood beds, Norton. Iowa Geol. Surv., vol. iv., pp. 156-157. 1895. 

Devonian. Iowa. Included in Wapsipinicon stage. 
Keokuk, Hall. Am. Assoc. Adv. Sci., Proc, vol. x, p. 54. 1856. 

Carboniferous. Mississippi Valley. Exact syn. Lower Archimides. 
Keokuk limestone, Worthen. Iowa Geol. Surv., vol.i, pp. 193, 202, 216, 228. 1858. 

Carboniferous. Iowa. 
Keokuk limestone, Hall. Iowa Geol. Surv., vol. i, p. 94. 1858. 

Carboniferous. Iowa. Exact syn. Archimides limestone. 
Keokuk limestone, Worthen. Iowa Geol. Surv., vol. i, pt. i, pp. 193-194, 202, 216- 
217, 228. 1858. 
Carboniferous. Iowa. 
Keokuk limestone. Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 94-96. 1858. 

Carboniferous. Iowa. Exact syn. Archimides limestone. 
Keokuk limestone. White. Boston Jour. Nat. Hist., vol. vii, 1859-1863, p. 224. 1860. 

Iowa. 
Keokuk limestone. Hall. Albany Inst, Trans., vol. iv, pp. 2-3. 1864. 

Carboniferous. Mississippi Valley. Exact syn. I^wer Archimides limestone. 
Keokuk group, Worthen. 111. Geol. Surv., vol. i, pp. 89-102, 334-337, 352. 1866. 
Carboniferous. Illinois. Included in Suboarboniferous. Exact svn. Siliceous 
group. 
Keokuk limestone, Worthen. III. Geol. Surv., vol. iii, pp. 112-113, 128-129, 140. 
1868. 
Carboniferous. Illinois. 



218 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [blllWI. 

Keokuk limestone, Engelmann. St. Louie Acad. Sei., Trans., voL ii, p. 189. 1868. 

Lower Carboniferous. Illinois. 
Keokuk limestone, Green. III. Geol. Surv., vol. iv, p. 279. 1870. 

Carboniferous. Illinois. 
Keokuk limestone, Worthen. 111. Geol. Surv., vol. iv, pp. 14, 31, 53, 69, 84. 1870. 

Carl)oniferous. Illinois. 
Keokuk limestone, White. Iowa Geol. Surv., vol. i, pp. 210-215. 1870. 

CarlK)niferous. Iowa. Included in Subcarboniferous group. Exact syn. I»wer 
Artrhimides limestone. 
Keokuk limestone, Worthen. 111. Geol. Surv., vol. v, pp. 261, 277-278. 1873. 

Carboniferous. Illinois. 
Keokuk group, Broatlhead. Mo. Geol. Surv., Rept. 1873-74, pp. 25, 68, 99, 184. 1874. 

Carboniferous, Missouri. Includetl in Lower Carboniferous, Mountain limestone. 
Keokuk group, Broadhead. Mo. Geol. Surv., Rept. 1873-1874, pp. 25, 68. 1874. 

Ivower Carboniferous. Missouri. 
Keokuk group, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv. No. iv, p. 286. 1881. 
Keokuk, Beachler. Am. Geol., vol. ii, p. 407. 1888. 

Carboniferous. Indiana. Included in Eocarboniferous. 
Keokuk series, Vogdes. N. Y. Acad. St-i., Annals, vol. iv, p. 72. 1889. 

Carl)oniferou8. Mississippi Valley. Exact syn. Siliceous series of Tennessee. 
Keokuk group, Miller. N. A. Geol. and Pal., p. 70. 1889. 
Keokuk limestone, Lad<l. Mo. Geol. Surv., Bull., No. 3, pp. 14, 15. 1890. 

Ix)wer Carboniferous. Missouri. 
Keokuk, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 54. 1890. 

Carboniferous. Arkansa.**. Included in Lower Carboniferous. 
Keokuk l)eds, Gordon. Am. Jour. Sci., 3tl ser., vol. xl, pp. 295-300. 1890. 

Carl>oniferous. Iowa. 
Keokuk series, Orton. Ky. Geol. Surv., Rept. on Petroleum, etc., p. 134. 1891. 

Carl)oniferous. Kentucky. Exact syn. Knobstone group. 
Keokuk, Beachler. Am. Geol., vol. x, p. 88. 1892. 

Carlxjnife rolls. Ohio and Mississippi valleys. Includes Cherty bed, Keokuk 
limestone, Geode bed, Magnesian or Second An-himides of Owen, and Warsaw 
of Hall. 
Keokuk, Gordon. Am. Geol., vol. ix, p. 185. 1892. 

Carboniferous. Iowa. 
Keokuk, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 292. 1892. 

Lower Carboniferous. Missouri. I nclude< I in Osage limestone. 
Keokuk limestone, Keyes. Mo. Geol. Surv., vol. iv, pp.30, 66-69, 76. 1894. 

Lower Carboniferous. Missouri. Included in Augusta stage. 
Keokuk limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Lower Carboniferous. Missouri. Inclutled in Augusta stage. 
Keokuk, Gordon. Iowa Geol. Surv., vol. iv, pp. 211-213. 1895. 

Carl)oniferous. Iowa. 
Keosauqua sandstone, Gordon. Jour, of Geol., vol. iii, pp. 304-305. 1895. 

Carlx)niferous. Iowa. Included in St. Louis group. 
Kessler limestone, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 103-106, 152. 1888. 

Carlxjniferous. Arkansas. Included in Lower Carboniferous. 
Kessler limestone, Drake. Am. Phil. Soc, Proc, vol. xxxvi, p. 354. 1897. 

Carlxjniferous. Indian Territory. Included in Boston group of Lower Carbon- 
iferous. 
'ettleman lake bed. Cooper. Cal. Arad. of Sci., Prot!. for 1893-94, 2d ser., vol. iv, 
p. 167. 1895. 
iocene. California. 



WEEKS.] KEOKUK KEWEENAW AN. 219 

Ke-weenawan, Irving. Am. Jour. Sci., 3(i ser., vol. xvii, pp. 395-398. 1879. 

Archean. Michigan. 
Keweenawan, Sweet. Geol. of Wis., vol. iii, pp. 336-350. 1880. 

Wisconsin. 
Keweenawan, Whittlesey. Geol. of Wis., vol. iii, pp. 216-223. 1880. 

Wisconsin. 
Keweenawan system, Irving. Geol. of Wis., vol. iii, pp. 167-206. 1880. 

Wisconsin. Exact syn. Copper-bearing system. 
Keweenawan systenr, Irving. Geol. of Wis., vol. iii, pp. 7-15. 1880. 
Keweenian group, Wadsworth. Harvard Col). Mn!-. Comp. Zool., Bull., vol. vii, 
1880-1884, p. 99. 1880. 
Includes Copper-bearing series of Luke Superior. 
Kew^enaw series. Strong. Geol. of Wis., vol. iii, pp. 391-395. 1880. 

Wisconsin. Exact syn. Copper-bearing series. 
Kew^eenawan system, Pumpelly. Geol. of Wis., vol. iii, pp. 29-49. 1880. 

Wisconsin. 
Keweenaw series, Irving. U. S. Geol. Surv., Mon., vol. v. 1883. 

Algonkian. Lake Superior region. 
Keweenawan, Chamberlin. Geol. of Wis., voL i, p. 96. 1883. 

Archean. Wisconsin. 
Keweenawan series, Irving. U. S. Geol. Surv., 3d Ann. Rept., p. 93. 1883. 

Algonkian. Lake Superior region. 
Keweenawan formation, Chamberlin. Geol. of Wis., vol. i, pp. 96-118. 1883. 

Huronian. Wisconsin. Exact syn. Copper- bearing series. 
Keweenawan series, Wadsworth. Boston Soc. Nat. Hist., Proc, vol. xxiii, 1884-1888, 
p. 172. 1884. 
Michigan. 
Keweenian, Hunt. Smithsonian Ann. Rept., 1882, p. 336. 1884. 

Archean. Michigan. Included in Eozoic. Exact syn. Keweenaw group. 
Kewenaw series, Irving and Chamberlin. U. S. Geol. Surv., Bull., No. 23. 1885. 

Algonkian. Michigan. 
Keweenawan series, Herrick, Tight, and Jones. Denison Univ. Sci. Lab., Bull., 
vol. ii, p. 124. 1887. 
Michigan. 
Keweenian, Winchell. Minn. Geol. and Nat. Hist., Surv., 17th Ann. Rept., p. 14. 
1889. 
Minnesota. Exact svn. Keweenawan. 
Keweenian, Winchell. Geol. Soc. Am., Bull., vol. ii, p. 109. 1890. 

Huronian (?). Canada. 
Keweenawan, Meeds. Minn. Acad. Nat. Sci., vol. iii, pt. ii, pp. 274-277. 1891. 

Minnesota. 
Keweenaw series. Van Hise. Jour, of Geol., vol. i, pp. 124-127. 1893. 

Algonkian. Lake Superior region. 
Keweenaw series. Van Hise. Int. Cong, of Geol., 5tli session, pp. 506-507. 1893. 

Algonkian. Lake Superior region. 
Kewenian, Dawson. Geol. Soc. Am. Bull., vol. v, i>. 103. 1894. 

Archean (?). Canada. 
Keweenawan, Grant. Am. Geol., vol. xiii, p. 437. 1894. 

Archean. Lake Superior region. 
Keweenawan, Winchell. Am. Geol., vol. xvi, pp. 75, 150. 1895. 

Archean. Lake Superior region. 
Keweenewan, Grant. Am. Geol., vol. xv, p. 192. 1895. 
Archean. Lake Superior. Included in Copijer- bearing rocks. Exact syn. Nipigon. 



220 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Keweenaw group, Hubbard. Mich. Geol. Surv., vol. v, p. 85. 1895. 

Michigan. 
Keweenawan series, Wadsworth. Am. Inst. Mg. Engrs., Trans., vol. xxvii, p. 687. 
1898. 

I^ke Superior region. 
Keweenawan series, Elftman. Am. Geol., vol. xxii, pp. 131-149. 1898. 

Algonkian. Minnesota. Includes Beaver Bay diabase, Redrock member. Tem- 
perance River member. 
Keweenawan series, Elftman. Am. Geol., vol. xxi, ppi 175-188. 1898. 

Algonkian. Great Lakes region. 
Keweenawan, Lane. Mich. Geol. Surv., vol. vi, pt. i, pp. 219-266. 1898. 

Archean. Michigan. 
Keweenaw series, Hubbard. Mich. Geol. Surv., vol. vi, pt. i, pp. 57-58, 97. 1898. 

Algonkian. Michigan. 
Keweenawan, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Algonkian. Michigan. Part. syn. Nipigon of Ontario. 
Keweenawan, Grant. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iv, pp. 
325, 4 J 8, 457, 476, 488, 494. 1899. 

Cambrian. Minnesota. Includes Cabotian, Puckwunge conglomerate, and Man- 
itou. 
Keweenawan, Grant. Wis. Geol. and Nat. Hist. Surv., Bull., No. 6, Econ. ser.. No. 3, 
pp. 8-16. 1900. 

Wisconsin. Includes Upper and Lower Keweenawan. 
Klamitia clays. Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 515. 1891. 

Cretaceous. Texas. Included in Washita division. 
Kiamitia clay, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 344-345. 1892. 

Cretaceotis. Texas. Included in Fredericksburg division of Lower Cretaceous. 
Kiamitia clay, Taff. Texas Geol. Surv., 4th Ann. Rept, pp. 258-261. 1893. 

Cretaceous. Texas. Included in Fredericksburg division of Lower Cretaceous. 
Kibbey sandstone, Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 295. 1900. 

Carl)oniferous. Montana. Included in Quadrant group. 
Kiger, Cragin. Colo. College Stud., vol. vi, pp. 3, 39. 1896. 

Permian. Kansas. Included in Upper division of Cimarron se;'ies. 
Kiger division, Cragin. Am. Geol. vol. xix, pp. 358-363. 1897. 

Permian. Kansas, Oklahoma. Included in Cimarron series. Includes Taloga, 
Day Creek, and Red Bluff formations. 
Kiger division, Prosser. Kan. Univ. Geol. Surv., vol. ii, pp. 94-95. 1897. 

Permian (?). Kansas. Included in Cimarron series. 
Kimberlingr shale, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 177. 1894. 

Devonian. Virginia. 
Kimberling shale, Campbell. U. S.Geol. Surv., (leol. Atlas of U.S., Folio No. 26. 
1896. 

Devonian. Virginia and West Virginia. 
Kimberling shale, Campbell. U.S. Geol. Surv., Geol. Atlas of U.S., Folio No. 44. 
1897. 

Devonian. Virginia and West Virginia. 
Kinderhook group, Worthen. III. Geol. Surv., vol. 1, pp. 43-44, 108-118. 1866. 

Carboniferous. Illinois. Included in Subcarboniferous limestone. Includes 
Choteau limestone. Lithographic limestone, Vermicular sandstones and shales 
of Missouri and Goniatite limestone. 
Kinderhook limestone, White. Am. Jour. Sci., 2d ser., vol. xlv, p. 333. 1868. 

Devonian. Iowa. 
Kimlerliook group, Worthen. III. Geqi. Surv., vol. iii, p. 115. 1868. 

Carboniferous. Illinois. 



WEEKS.] KEWEENAWAN KINDEBHOOK. 221 

Kinderhook group, Green. 111. Geol. Surv., vol. iv, p. 285. 1870. 

Carboniferous. Illinois. 
Kinderhook group, Worthen. 111. Geol. Surv., vol. iv, pp. 9, 27, 57. 1870. 

Carboniferous. Illinois. 
Kinderhook beds, White. Iowa Geol. Surv., vol. i, pp. 191-201. 1870. 

Carboniferous. Iowa. Included in Subcarboniferous group. Exact syn. Che- 
mung group. 
Kinderhook group, Worthen. 111. Geol. Surv., vol. v, p. 279. 1873. 

Carboniferous. Illinois. 
Kinderhook group, Williams. Am. Jour. Sci., 3d ser., vol. xxv, pp. 97-104. 1883. 

Carboniferous. Mississippi Valley. 
Kinderhook, Calvin. Am. Geol., vol. iii, pp. 25-36. 1889. 

Carboniferous. Iowa. 
Kinderhook, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. Includes Chouteau 
and lithographic limestone (Missouri), Goneatite limestone (Indiana), and 
Iowa marble. 
K^inderhook, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 287. 1892. 

Lower Carboniferous. Missouri. Included in Mississippian. Includes Louisiana 
limestone, Hannibal shale, and Chouteau limestone. Part. syns. Waverly, 
Marshall. 
Kinderhook beds, Keyes. Iowa Geol. Surv., vol. i, pp. 50-^9. 1893. 
Carboniferous. Iowa. Included in Mississippian series. Includes Chouteau lime- 
stone, Hannibal shales, and Louisiana limestone. 
Kinderhook stage, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 48-58. 1894. 
Lower Carboniferous. Missouri. Includes Choteau limestone, Hannibal shale, 
and Louisiana limestone. 
Kinderhook stage, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 
Lower Carboniferous. Missouri. Included in Mississippian. Includes Chouteau 
limestone, Hannibal shale, and Louisiana limestone. 
Kinderhook shale, Keyes. Iowa Geol. Surv., vol. iii. pp. 339-340, 431-439. 1895. 

Carboniferoiis. Iowa. Included in Mississippian series. 
Kinderhook, Bain. Iowa Geol. Surv., vol. v, pp. 131-140. 1896. 
Carboniferous. Iowa. Included in Mississippian series. Includes Wassonville 
limestone, English River gritstone, and Maple Hill shale. 
Kinderhook, Keyes. Am. Geol., vol. xx, pp. 167-176. 1897. 

Carboniferous. Mississippi Valley. 
Kinderhook stage, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 82. 1898. 
Lower Carboniferous. Missouri. Includes Chouteau limestone, Hannibal shale, 
and Louisiana limestone. 
Kinderhook beds, Marbut. Mo. Geol. Surv., vol. xii, pt. ii. p. 160. 1898. 

Lower Carboniferous. Missouri. Included in Mississippian series. 
Kinderhook, Macbride. Iowa Geol. Surv., vol. ix, p. 123. 1899. 

Carboniferous. Iowa. Included in Mississippian series. 
Kinderhook, Keyes. Jour, of Geol., vol. viii, pp. 315-321. 1900. 

Carboniferous. Mississippi Valley. 
Kinderhook, Beyer. Iowa Geol. Surv., vol. x, p. 264. 1900. 

Carboniferous. Iowa. Included in Mississippian series. 
Kinderhook, Weller. Iowa Geol. Surv., vol. x, pp. 63-79. 1900. 

Devonian-Carboniferous. Iowa. 
Kinderhook, Keyes. Am. Geol., vol. xxvi, pp. 315-321. 1900. 

Carboniferous. Mississippi Valley. 
Kinderhook, Keyes, Jour, of Geol., vol. 8, pp. 315-321. 1900. 
Carboniferous. Mississippi Valley region. 



222 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 



limestone, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 71-74. 1898. 
Devonian. Missouri. Included in Hamilton stage. 
Kingfisher formation, Cragin. Am. Geol. vol. xix, pp. 362-355. 1897. 
Permian. Kansas, Oklahoma. Included in Salt Fork division of Cimarron series. 
Includes Salt Plain and Harper formations. 
Kings Mill sandstone, Claypole. 2d Pa. Geol. Surv., Kept. F*, pp. 73-77. 1885. 

Devonian. Pennsylvania. Included in Catskill. 
Kings Mill sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1560- 
1561. 1892. 
Devonian. Pennsylvania. Included in Chemung. 
Kings Mountain series, Lieber. Survey of S. C, 1858, pp. 20-30. 1858. 

Paleozoic(?) . South Caroima. 
Kingsdown marls, Cragin. Colo. College Stud., vol. vi, p. 54. 1896. 

Tertiary. Kansas. Included in Tule division of Cummins, Equus beds of Cope. 
Kingston group, Bailey and Matthew. Can. Geol. Surv., Rept., 1870-71, pp. 122- 
138. 1873. 
Archean. New Brunswick. Included in Huronian. 
Kingston series, Bailey and Matthew. Can. Geol. Surv., Rept., 1874-75, pp. 85-86. 
1876. 
Huronian. New Brunswick. 
Kingston series, Matthew. Can. Geol. Surv., Rept., 1876-77, p. 336. 1878. 

Archean. New Brunswick. 
Kingston group, Matthew. Can. Geol. Surv., Rept., 1876-77, pp. 330-338. 1878. 

Silurian. New Brunswick. Included in Upper Silurian. 
Kingston group, Bailey, Matthew and Ells. Can. Geol. Surv., Rept., 1878-79, pp. 
4D-6D. 1879. 
Archean. New Brunswick. Included in Huronian. 
Kingston series, Matthew. Can. Geol. Surv., Rept., 1877-78., p. 3E. 1879. 

Archean. Ne^ Brunswick. Included in Huronian. 
Kingston conglomerate, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, pp. 85-86. 1898. 

Algonkian. Michigan. Exact, syn. Kearsarge conglomerate. 
Kingston formation, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, 
p. 88. 1899. 
Pleistocene. Jamaica. Included in Coastal series. 
Kingston beds, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Devonian. New York. Included in Helderbergian. 
Kingstown series, Shaler, Wood worth, and Foerste. U. S. Geol. Surv., Men., 
vol. xxxiii, pp. 331-348. 1899. 
Carboniferous. Rhode Island. 
Kinzua Creek sandstone, Ashburner. 2d Pa. Geol. Surv., Rept. R*, pp. 389-390. 
1885. 
Carboniferous. Pennsylvania. 
Kiowa shales, Cragin. Colo. College Stud., vol. v, p. 49. 1894. 

Cretaceous. Kansas. Included in Comanche series. 
Kiowa shale, Cragin. Am. Geol., vol. xv, p. 371. 1895. 
Cretaceous. Kansas. Included in Belvidere beds. Includes Tucumcari shale 
and Fullington shales. 
Kiowa shales, Prosser. Kansas Univ. Geol. Surv., vol. ii, pp. 114-117. 1897. 
Lower Cretaceous. Kansas. Included in Washita division of Comanche series. 
Includes Fullington shales and Tucumcari shales. 
Kiowa shales, Gould. Am. Jour. Sci., 4th ser., vol. v, pp. 169-174. 1898. 

Cretaceous. Kansas. Included in Comanche series. 
Kirby clays, Gould. Am. Jour. Sci., 4th ser., vol. v, pp. 170-174. 1898. 
Cretaceous. Kansas. Included in Medicine beds. 



WEEKS] KING KNOBSTONE. 223 

Blitclii schist, Van Rise and Bayley. U. S. Geol. Surv., 15th Ann. Kept., p. 496. 
1895. 
Archean. Lake Superior region. Exact syn. Mona schist. 
Kitchi schists, Bayley. U. S. Geol. Surv., Mon., vol. xxviii, pp. 160-168. 1897. 

Archean. Michigan. Included in Basement complex. 
Kitchi schists. Van Rise. Geol. Soc. Am., Bull., vol. ix, p. 307. 1898. 

Archean. Michigan. 
Kittaxinin^ coal, Lesley. Manual of Coal, p. 99. 1856. 
Kittanning coal, Rogers. Geol. of Pa., vol. ii, p. 477. 1858. 
Kittanning group, Lesley. 2d Pa. Geol. Surv., Kept. Q, p. xvii. 1878. 

Carboniferous. Pennsylvania. 
Kittanning sandstone, Piatt. 2d Pa. Geol. Surv., Kept. H*, p. 319. 1880. 

Carboniferous. Pennsylvania. 
Kittanning group, Chance. Pa. Geol. Surv., Kept. V*, pp. 41-49. 1880. 
Carboniferous. Pennsylvania. Included in Lower Productive Measures. Includes 
Johnstown cement limestones. 
Kittanning fireclay. White. U. S. Geol. Surv., Bull. No. 65, p. 171. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Lower Coal 
Measures, Allegheny River series. 
Kittanning sandstone. White. U. S. Geol. Surv., Bull. No. 65, p. 172. 1891. 
Carboniferous. Pennsylvania. Included in Lower Coal Measures, Allegheny 
River series. 
Kittanning coal. White. U. S. Geol. Surv., Bull. No. 65, p. 164. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in I^ower Coal 
Measures, Allegheny River series. 
Kittanning clay and shales. Middle, Orton. Ohio Geol. Surv., vol. vii, pp. 63, 66. 
1893. 
Carboniferous. Ohio. 
Kittanning clay, Orton. Ohio Geol. Surv.., vol. vii, pp. 63, 65. 1893. 

Carboniferous. Ohio. 
Kittanning group, White. Geol. Soc. Am., Bull., vol. xi., pp. 150-153. 1900. 

Carboniferous. Pennsylvania. Included in Allegheny series. 
Kittitas, Russell. U. S. Geol. Surv., Bull. No. 108, p. 20. 1893. XT. 8. Geol. Surv., 
20th Ann. Rept., pt. ii, p. 118 (footnote). 1900. 
Tertiary. Washington. 
Klondike series, McConnell. Can. Geol. Surv., Rept. on Klondike gold fields, 
pp. 8-9. 1900. 
Canada. 
Klutena series, Schrader. U. S. Geol. Surv., 20th Ann. Rept.. pt. vii, p. 410. 1900. 

Alaska. 
Knob sandstone, Owen. Rept. Geol. Reconn. Indiana, 1859 and 1860, p. 108. 1862. 

Carboniferous. Indiana. 
Ilaob sandstone, limestone and shale, Borden. Indiana Geol. Surv., 5th Ann. Rept. 
for 1873, pp. 165, 166, 168, 170, 172. 1873. 
Indiana. Exact syn. Ohio Waverly sandstone. 
Knob standstone. Cox. Indiana Geol. Surv., 6th Ann. Rept. for 1874, p. 44. 1875. 

Indiana. 
Knob sandstone and shale, Borden. Indiana Geol. Surv., 6tli Ann. Rept., for 1874, 
pp. 118, 119. 1875. 
Indiana. 
Knob sandstone. Brown. Indiana Dept. Geol. and Nat. Hist., 13th Ann. Rept., for 
1883, p. 75. 1884. 
Carboniferous. Indiana. 
Knobstone, Owen. Ky. Geol. Surv., vol. ii, p. 351. 1857. 
Carboniferous. Kentucky. Indudeil in Subcarboniferoua, 



224 NORTH AUEBICAN QEOLOOIC FOBHATION NAMES. IbiluISI 

Knobetoiie l)etift Lyon, Wt. Louie AcaiL Ki^., Tnuie., vol. i, p. 619. 1S67. 

SulMnrlxiniferouH. Kentui;ky, 
Knobstone formation, Owen. Kept. Cieol. Reconn. (State uf Indiana (in 1837), p. 23, 
1H5S. 

Knotxitone bviU, (V)]|«tl. Indiana <i«ol. Kurv., 5lh Ann. Kept for 1873, pp. 198, 

279. 1S74. 
Imliana. Exaftsyiia. C)iemnn^|;mup(Iowa), Waverly group (Ohio), and Kiodw- 

liook group (Illinoii). 
Knolwtone ehaleg, Collett. Indiana (ieol. Kurv., 6th Ann. Kept, for 18T4, p. 87. 1875. 

Knobetono group, Collett. Indiana (ieoL Surv., 7th Ann. Rept. for 1S75, pp. SSA, 
310, 318, 372, 374. 1876. 
CarlraniferouH. Indiana. 
Knobetone group, Greene. Indiana Dept. Slat, and Geol., 2d Ann. Bept. for 1680, 
p. 432. 1880. 
Indiana. 
Knobstnne group, Collett. Indiana Pept. Stat, and Geo)., 2d Ann. Rept. for 1880, p. 
417. 1880. 

Knobstone group, Elmd, Indiana Dept. Geol. and Nat Hiet., 11th Ann. Rept., 
1881, pp. 174, 198. 1882. 
CarlMniferoue. Indiana. 
Knobetone group, M'Caabin. Indiana Dept. GeoLand Nat. Hist., 13th Ann. Rept, 
1883, pp. 120l 128. 1884. 
Carbon if erouH. Indiana. 
Knobstone group, ThonipBon. Indiana Dept. Geol. and Sat. Hiat, 13th Ann. Bept-, 

1886, p. 18. 1886. 
Knolwtone group, Gorby. Indiana Dept, Geol. and Nat. Hist., 15th Ann. Rept.. 
1886, pp. 122, 124. 1886. 
Carboniferous. Indiana. 
Knobetone group, HopkineandKiebenthal. Indiana Dept. Geol. and Nat. ReBOurces, 
21et Ann. Rept. for 1896, p. 295. 1897. 
CarboniferouB. Indiana. 
Knobstone Kroup, Jones. Indiana Acad. Sci., Proc., 1897, p. 257. 1898. 

idiana Aead. Sei., Procv, 1897, p. 263. 1898. 

Indiana A.-ad. Sci., Vtm:, 1897, p. 268. 1898. 

Ind. Atad. Sci., Proo., 1897, pp. 251, 253. 1898. 

and Ashley. Indiana Dept. Geol. anil Nat. Resources, 
pp. 16, 20. 189S. 

le. Indiana Depl. Geo), and Nat. Resources, 22d Ann. 
1898. 

jr. Indiana Detit. <ieoi. and Nat. Resourcea, 22d Anii- 
*98. 

Indiana Dept. Geol. and Nat. Resources, 23d Ann Kept, 



WEEKS] KNOB8TONK KNOX. 225 



group, Safford. Geol. of Tenn., by Safford, pp. 203-226. 1860. 
Silarian. Tennessee. Included in Potsdam group. Includes Knox sandstone, 
Knox shale, and Knox dolomite. 
Knox sandstone, Safford. Geol. of Tenn. by Safford, pp. 209-210. 1869. 

Silurian. Tennessee. Included in Knox group. 
Knox shale, Safford. Geol. of Tenn., by Safford, pp. 210-214. 1869. 

Silurian. Tennessee. Included in Knox group. 
Knox dolomite, Safford. Geol. of Tenn., by Safford, pp. 214-226. 1869. 

Silurian. Tennessee. Included in Knox group. 
Knox sandstone, Killebrew and Safford. Resources of Tenn., pp. 30-31. 1874. 

Silurian. Tennessee. Included in Quebec period. 
Knox shale, Killebrew and Safford. Resources of Tenn., p. 31. 1874. 

Silurian. Tennessee. Included in Quebec period. 
Knox dolomite, Killebrew and Safford. Resources of Tenn., pp. 31-32. 1874. 

Silurian. Tennessee. Included in Quebec period. 
Knox group, Bradley. Am. Jour. Sci., 3d ser., vol. ix, pp. 281-283. 1875. 

Silurian. Tennessee. Part. syns. Saccharoidal sandstone of Missouri, Quebec 
group, and Calciferous sandrock. 
Knox group, Smith. Ala. Geol. Sur^ ., Rept. 1875, pp. 16, 84, 103, 136, 178. 1876. 
Silurian. Alabama. Included in Calciferous, Quebec. Includes Knox sandstone 
shale and dolomite. 
Knox dolomite, McCalley. Ala. Geol. Surv., Rept. 1879-1880, pp. 141, 145. 1881. 

Silurian. Alabama. Exact syn. Quebec. 
Knox group, Stevenson. The Virginias, vol. ii, p. 27. 1881. 

Silurian. Virginia. 
Knox dolomite, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1889. 

Ordovician. Tennessee. Exact syn. Quebec (?). 
Knox group, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. Part. syn. Quebec. 
Knox dolomite. Smith. Ala. Geol. Surv., Rept. on Cahaba coal field, p. 150. 1890. 

Silurian. Alabama. 
Knox dolomite, Spencer. Ga. Greol. Surv., Ist Rept. of Prog., pp. 108-189. 1891. 

Cambro-Silurian. Georgia. 
Knox shales series, Spencer. Ga. Geol. Surv., Ist Rept. of Prog., pp. 101, 106-107. 
1891. 
Cambrian. Georgia. Included in Cambrian. Exact syn. Connasauga shales. 
Knox sandstone series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., 1890-91, p. 101. 
1891. 
Cambrian. Geoigia. 
Knox dolomite series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., pp. 108-109. 
1891. 
Ordovician. Greorgia. Included in Cambro-Silurian. 
Knox, Walcott. U. S. Geol. Surv., Bull. No. 21, pp. 137, 147, 301, 307. 1891. 

Cambrian. Appalachian region. 
Knox dolomite, Hayes. Ala. Geol. Surv., Bull. No. 4, p. 41. 1892. 

Silurian. Alabama. 
Knox dolomite, Spencer. Ga. Geol. Surv., The Paleozoic group, pp. 42, 78, 92, 102, 
109, 112, 116, 119, 123, 130, 152. 1893. 
Silurian. Georgia. Included in Lower Silurian. Exact syn. Calciferous. 
Knox dolomite, Gibson. Ala. Geol. Surv., Geol. Structure of Murphrees Valley, pp. 
25, 91. 1893. 
Silurian. Alabama. 
Knox dolomite, Hayes. Geol. Soc. Am., Bull., vol. v., p. 467. 1894. 
Siluro-Cambrian. Georgia. 

Bull. 191—02 15 



226 NOBTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191 

Knox dolomite, Hayes. U. S. Geol. Surv., Greol. Atlas of U. S., Folios Nos. 2, 4, 6. 
8, 19, 20, 21. 36. 1894-5-6. 

Silurian. Georgia, Tennessee, and Alabama. 
Knox dolomite, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 

Cambrian-Silurian. Kentucky, Virginia, and Tennessee. 
Knox dolomite, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25,27. 
1896, 1896. 

Silurian. Tennessee and North Carolina. 
Knox dolomite, Keith. U. S. Geol. Sur^^, Geol. Atlas of U. S., Folio No. 33. 1896. 

Silurian. Tennessee. 
Knox dolomite, Hayes. U. S. Greol. Surv., Geol. Atlas of U. S., Folio No. 35. 1896. 

Silurian. Alabama. 
Knox dolomite, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 44. 1897. 

Cambro-Silurian. Virginia and West Virginia. 
Knox dolomite, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 59. 1899. 

Cambro-Silurian. Virginia and Tennessee. 
KnoxviUe, Becker. U. S. Geol. Surv., Bull. No. 19, p. 18. 1885. 

California. Exact syn. Mariposa. 
Knoxville beds (group), Becker. Geol. Soc. Am., Bull., vol. ii, p. 202. 1891. 

Cretaceous. California. 
Knoxville beds, Diller. Greol. Soc. Am., Bull., vol. iv, p. 205. 1893. 

Cretaceous. California. 
Knoxville beds, Diller and Stanton. Geol. Soc. Am., Bull., vol. v, p. 435. 1894. 

Cretaceous. California. 
Knoxville, Hyatt. Geol. Soc. Am., Bull., vol. v, p. 406. 1894. 

Cretaceous. California. 
Knoxville, Stanton. U. S. Geol. Surv., Bull. No. 133. 1895. 

Cretaceous. Pacific Coast region. 
Knoxville beds, Fairbanks. Jour, of Greol., vol. vi, pp. 669-660. 1898. 

Cretaceous. California. 
Koipato, Hague. U. S. Geol. Expl. 40th Parallel, vol. ii, pp. 644, 661, 716-733, 752. 
1677. 

Juratrias. Nevada. 
Koipato, King. U. S. Geol. Expl. of 40th Parallel, vol. i, p. 544. 1878. 

Juratrias. Colorado, Utah. Included in Red beds, Triassic. 
Kolmakof series, Spurr. XJ. S. Geol. Surv., 20th Ann. Rept, pt. vii, pp. 161-163, 
182. 1900. 

Cretaceous. Alaska. 
Kome series, White and Schuchert. Geol. Soc. Am., Bull., vol. ix, p. 346. 1898. 

Cretaceous. Greenland. Included in Potomac formation. Lower Cretaceous. 
Komooks beds, Meek. Phil. Acad. Nat. Sci., Proc, vol. xiii, p. 316. 1862. 

Cretaceous. Vancouver Island. 
Kona dolomite. Van Hise and Bay ley. U. 8. Geol. Surv., 15th Ann. Rept., p. 523. 
1896. 

Algonkian. Lake Superior region. Included in Lower Marquette series. 
Kona dolomite, Van Hise. XJ. S. Geol. Surv., Mon., vol. xxviii, pp. 240-265. 1897. 

Algonkian. Michigan. Included in Lower Marquette series. 
Kootanie series, Dawson. Can. Geol. Surv., new ser., vol. i, pp. 126B-134B, 162B- 
167B. 1886. 

Cretaceous. Canada. 
Kootanie group, McConnell. Can. Geol. Surv., new ser., vol. ii, pp. 16D-17D. 1887. 

Cretaceous. Canada. 



WEEKS.] KNOX LA MOTTE. 227 

Kootanie formation^ Dawson. Am. Jour. Sci., 3d ser., vol. xxxviii, pp. 120-127. 
1889. 
Cretaceous. British Columbia. 
Kootanie, White. U. 8. Geol. Surv., Bull. No. 82, pp. 168, 254. 1891. 

Cretaceous. Rocky Mountains. Included in Lower Cretaceous. 
Kootanie, Weed. Geol. Soc. Am., Bull., vol. iii, pp. 301, 309-310 1892. 

Cretaceous. Montana. 
Kootanie formation, Dawson. Can. Roy. Soc., Trans., 1892, vol. x, sec. iv., pp. 82-93. 
1893. 
Cretaceous. British Columbia. 
Kootanie, Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 44. 1896. 

Cretaceous. Montana. 
Kootanie formation, Stanton. Jour, of Geol., vol. v, pp. 593-^94. 1897. 

Cretaceous. Included in Lower Cretaceous. 
Kootanie, Weed. U. S. Geol. Surv., 18th Ann. Rept, pt. iii, pp. 477, 480-482. 1898. 

Cretaceous. Montana. 
Kotlo series. Brooks. U. S. CJeol. Surv., 2l8t Ann. Rept., pt. ii, p. 357. 1900. 

Alaska. 
Kowak clay, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 265. 1892. 

Pleistocene. Alaska. 
Kowak clays, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 335. 1898. 

Pleistocene. Alaska. 
Kuskokwim gravels, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 
175-176. 1900. 
Pleistocene. Alaska. 
La Biche shales, McConnell. Can. Geol. Surv., new ser., vol. v., pt. i, pp. 27D-28D. 
1893. 
Cretaceous. Canada. Included in Colorado group (lower part), Montana group 
(upper part). 
La Qrangre group, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 369-370. 1864. 

Tertiary. Tennessee. Exact syn. Orange sand. 
La Grange group, Killebrew and Safford. Resources of Tenn., p. 44. 1874. 

Tertiary. Tennessee. 
La Grange, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 153-154. 1884. 

Tertiary. Tennessee. Included in Eocene. 
La Grange group, Loughridge. Ky. Geol. Surv., Jackson Purchase region, pp. 52-57. 
1888. 
Neocene(?). Kentucky. Exact syn. La Grange. 
Lagrange beds, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 
Pliocene. Gulf State8(?) Included in Floridian epoch, Lafayette group. Part. syn. 
Lafayette group. 
Lagrange group, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, pp. 170-171. 
1892. 
Tertiary. Tennessee, Kentucky. Included in Lafayette. 
LaMotte sandstone, Keyes. Mo. Geol. Surv., vol. vi, pp. 331, 358. 1894. 

Cambrian. Missouri. Included in Ozark series. Part. syn. Proctor limestone. 
La Motte sandstone, Keyes. Mo. Geol. Surv., Sheet Rept., no. iv, pp. 18, 44. 1895. 

Upper Cambrian. Missouri. 
La Motte sandstone, Keyes. Mo. Geol. Surv., vol. ix, Sheet Rept., no. iv, pp. 18, 19, 
20, 44-48. 1896. 
Cambrian. MissourL Included in Upper Cambrian. 
La Motte sandstone, Winslow. U. S. Geol. Surv., Bull. No. 132, p. 12. 1896. 

Missouri. 
La Motte sandstone, Wheeler. Mo. Geol. Surv., vol. xi, p. 37. 1896. 
Cambrian. Missouri. 



228 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

La Plata formation, Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 57. 
1899. 

Juratrias. Colorado. Included in Gunnison formation. 
La Plata formation, Cross and Spencer. XJ. S. Geol. Surv., 21st Ann. Rept, pt. ii, 
p. 73. 1900. 

Juratrias. Colorado. 
Labette shales, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 36-37, 92, 94, 100. 
1898. 

Carboniferous. Kansas. Included in Marmaton formation. 
Labradorian, Hitchcock. Boston Soc. Nat. Hist, Proc., vol. xv, 1872-73, p. 304. 
1873. 

New Hampshire. 
Labrador system, Hitchcock. Geol. of N. H., pt. ii, p. 209. 1877. 

Azoic. New Hampshire. 
Lackawaxen conglomerate. White. 2d Pa. Geol. Surv., Rept. G*, p. 100. 1882. 

Devonian. Pennsylvania. Included in Catskill. 
Lackawaxen conglomerate, Lesley. 2d Pa. G^ol. Surv., Final Rept., vol. ii, pp. 1549- 
1553. 1892. 

Devonian. Pennsylvania. Included in Chemung. 
Lady Washingrton rock. Cox. Indiana Geol. Surv. , Sec. Rept. for 1870, p. 145. 1871. 

Carboniferous. Indiana. 
Lafayette, Hilgard, Am. Geol. vol. viii, p. 130, 1891. 
Lafayette, McGree. U. S. Geol. Surv., 12th Ann. Rept., pt. i, p. 497. 1891. 

Tertiary. Coastal plain, Gulf States. Included in Neocene. Exact syns. Appo- 
mattox, Orange sand, Lagrange, Fayette beds. Plateau gravel. 
Lafayette series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., pp. 61-72. 1891. 

Tertiary. Greorgia. Included in Pliocene. 
Lafayette, Hilgard, U. S. Geol. Surv. Bull. No. 84, p. 328, 1892. 
Lafayette formation, Harris. Ark. Greol. Surv., 1892, vol. ii, pp. 7-8. 1892. 

Arkansas. 
Lafayette formation, Hilgard. Am. Jour. Sci., 3d ser., vol. xliii, pp. 389-402. 1892. 

Tertiary. Gulf States. 
Lafayette group, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Pliocene. Gulf and Atlantic States. Included in Floridian epoch. Includes 
Lagrange beds. Orange sand, etc. 
Lafayette, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, pp. 80, 84, 159, 166, 
179, 175. 1892. 

Tertiary. Atlantic and Gulf coasts, and Mississippi Valley. 
Lafayette, Darton. U. S. G^ol. Surv., Baltimore, Md., Geologic sheet. 1892. 

Tertiary. Maryland. Included in Neocene. 
Lafayette, Williams and Clark. Maryland; Its Resources, Industries, and InstitU' 
tions, pp. 74-82. 1893. 

Tertiary. Maryland. Included in Pliocene. 
Lafayette (?), Spencer. Ga. Geol. Surv., The Paleozoic group, p. 97. 1893. 

Tertiary. Georgia. 
Lafayette, McGree, Williams and Darton. Int. Cong, of Greol., 5th Sess., pp. 234-235^ 
246. 1893. 

Tertiary. Maryland and District of Columbia. 
Lafayette, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios No. 13. 23. 18H 
1896. 

Included in Neocene. Virginia and Maryland. 
Lafayette, Smith. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 291-295. 1894. 

Tertiary. Alabama. 
Lafayette, Upham. Geol. Soc. Am., Bull., vol. v, pp. 87, 89. 1894. 

Tertiary. Minnesota. Included in Neocene. 






-WEEKS.] LA PLATA LAKE 8UPERI0B. 229 

Lafayette, Upham. Am. Assoc. Adv. Sci., Proc., vol. xliii, p. 219. 1894. 

Tertiary. General. Included in Quaternary. 
Lafayette, Clark. N. J. Geol. Surv., Kept., 1893, p. 339. 1894. 

Neocene. New Jersey. Part syn. Yellow gravel. 
Lafayette, Keith. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 10. 1894. 

Included in Neocene. Virginia, Maryland, and West Virginia. 
Lafayette, Keith. U. 8. Geol. 8urv., 14th Ann. Kept., pt. ii, p. 366. 1894. 

Tertiary. Maryland and Virginia. 
Lafayette, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plains 
of Ala., p. 65. 1894. 

Tertiary. Alabama. Included in Pliocene. Exact syn. Orange sand. 
Lafayette, Hershey. Am. Geol., vol. xvi, p. 349. 1895. 

Tertiary. Missouri. 
Lafayette, Darton. U. 8. Geol. Surv., Bull. No. 138, pp. 126, 164, 209. 1896. 

Tertiary. Atlantic Coastal Plain. Included in Neocene. 
Lafayette formation, Clark. Md. Geol. Surv., vol. i, pp. 156, 198. 1897. 

Tertiary. Maryland. Included in Neocene. 
Lafayette formation, Spencer. Geol. Soc. Am. Bull., vol., ix, p. 25. 1897. 

Tertiary. Mexico. 
Lafoyette, Harris and Veatch. La. State Exp. Station, pt. v, p. 99. 1899. 

Tertiary. Louisiana. 
liagrarto division, Dumble. Jour, of Geol., vol. ii, p. 560. 1894. 

Tertiary. Texas. Included in Pliocene. 
Lagronda sandstone and shale, Gordon. Mo. Geol. Surv., Sheet Kept, ii, p. 19. 
1893. 

Upper Carboniferous. Missouri. Included in Lower Coal Measures. 
Lagonda sandstone, Gordon. Mo. Geol. Surv., vol. ix. Sheet Rept. no. 2, p. 19. 
1896. 

Carboniferous. Missouri. Included in Coal Measures. 
Lake quartzite-schist, Schrader. U. 8. Geol. Surv., 21st Ann. Rept., pt. ii, p. 474. 
1900. 

Alaska. 
Lake Bonneville beds. Tower and Smith. U. 8. Geol. Surv., 19th Ann. Rept., pt. iii, 
pp. 667, 668. 1899. 

Pleistocene. Utah. 
Lake Huron shale, Thompson. Indiana Dept. (xeol. and Nat. Hist., 15th Ann. 
Rept., for 1886, p. 325. 1886. 

Indiana. 
Lake Superior sandstone, Houghton. Mich. Legislature, Doc. No. 8 (sess. 1840), 
3d Ann. Rept. State Geol., for 1839, p. 13. 1840. 

Michigan. 
Lake Superior sandstone, Foster and Whitney. Am. Assoc. Adv. Sci., Proc, vol. v, 
pp. 22-38. 1851. 

Silurian. Lake Superior region. Included in Lower Silurian. 
Lake Superior sandstone, Winchell. Mich. Geol. Surv., 1st Bien. Rept. Prog., pp. 49, 
141. 1861. 

Silurian. Michigan. Included in Ordovician. 
Lake Superior sandstone, Winchell. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 226- 
232. 1864. 

Silurian. Michigan. Exact syn. Potsdam. 
Lake Superior group, Winchell. Mich. Geol. Surv., Rept. Prog., p. 27. 1871. 

Michigan. The Conglomerate, the sandstone west of Keweenaw Point, the sand- 
stone east of Keweenaw Point, and the Upper Gray sandstone of Houghton. 
Lake Superior sandstone. Sweet. Geol. of Wis., vol. iii, pp. 350-352. 1880. 

Wisconsin. 



230 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Lake Superior sandstone, Irving. Geol. of Wis., vol. iii, pp. 15, 207. 1880. 

Cambrian. Wisconsin. Part. syn. Pottsville of Mississippi Valley. 
Lake Superior sandstone, Chamberlin. Geol. of Wis., vol. i, pp. 122-124. 1883. 

Cambrian. Wisconsin. Included in Potsdam. 
Lake Superior sandstone, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 188, 252, 335. 
1891. 
Cambrian. Lake Superior region. 
Lake Superior sandstone, James. Cin. Soc. Nat. Hist., Jour., vol. xvii, no. ii, p. 129. 
1894. 
Ordovician. 
Lake Superior rocks, Winchell. Am. Geol., vol. xvi, p. 333. 1895. 

Archean, Cambrian. Lake Superior region. 
Lake Superior sandstone, Grant. Wis. Geol. and Nat. Hist. Surv., Bull. No. 6. 
Econ. ser., no. iii, pp. 17-20. 1900. 
Cambrian. Wisconsin. 
Lake Superior sandstone. Van Hise and Bay ley. U. S. Geol. Surv., Geol. Atlas of 
U. S., Folio No. 62. 1900. 
Cambrian and Silurian. Michigan. 
Lake Winnipiseogie gneiss, Hitchcock. Geol. of N. H., pt. ii, pp. 595-^99. 1877. 

Eozoic. New Hampshire. Included in Laurentian. 
Lake Winnipiseogee gneiss, Hitchcock. Am. Mus. Nat. Hist, Bull., vol. i, 1881-1886, 
p. 179. 1884. 
Vermont and New Hampshire. 
Lake Winnipisoegie gneiss and Lake gneiss, Hitchcock. Jour, of Geol., vol. iv, p. 51. 
1896. 
Archean. New Hampshire. Part. syn. Green Mountain series. 
Lambton formation. Chapman. A Popular and Practical Exposition of the Minerals 
and Geology of Canada, p. 195. 1864. 
Devonian. Canada. Exact syn. Goniatite formation, Hamilton. 
Lamont stone. Cox. Indiana Geol. Surv., 8th, 9th, and 10th Ann. Bepts., for 1876, 
1877, 1878, p. 92. 1879. 
Indiana. 
Lancaster limestone, Frazer. 2d Pa. Gteol. Surv., Kept. C, pp. 4-6. 1880. 

Silurian. Pennsylvania. Exact syn. Calciferous and Trenton. 
Lane shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 134-135. 1891. 

Carboniferous. Kansas. 
Lane shales, Haworth. Am. Jour. Sci., 3d ser., vol. 1, p. 460. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Lane shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 48, 49. 1896. 

Carboniferous. Kansas. 
Lane shales, Kirk. Kansas Univ. Geol. Surv., vol. i, p. 79. 1896. 

Carboniferous. Kansas. 
Lane shales, Haworth. Kansas Univ. Geol. Surv., vol. iii, pp. 54-55, 92, 94, 103. 
1898. 
Carboniferous. Kansas. Included in Pottawatomie formation. 
Lanphier beds, Cragin. Am. Geol., vol. xvi, p. 367. 1895. 
Cretaceous. Kansas. Included in Elk Creek beds, Cheyenne sandstones, and 
Belvidere beds 
Lansdale shale, Lyman. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 2609- 
2610. 1896. 
Juratrias. Pennsylvania. Included in New Red. 
L'Anse series^ Brooks. Mich. Geol. Surv., vol. i, pt. i, p. 165. 1873. 
Michigan. Includes Huron Bay slates, etc. 



*KK8.1 LAKE SUPERIOR ^LARAMIE. 231 

Lapara division, Duinble. Jour, of GeoL, vol. ii, pp. 559-560. 1804. 

Tertiary. Texas. Included in Pliocene. 
Laramie, White. U. 8. Geol. and Geog. Surv. of Terr., Bull., vol. iii, pp. 625-629. 
1877. 

Poet-Cretaceous. 
Laramie, Ha^e. U. S. Geol. Explor. of 40th Parallel, vol ii, p. 28. 1877. 

Cretaceous. Colorado. 
Laramie, Hague. U. 8. Geol. Explor. of 40th Parallel, vol. ii, pp. 143-148. 1877. 

Cretaceous. Wyoming. 
Laramie, Endlich. U. 8. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 77, 
109, 124. 1878. 

Colorado. Included in Poet-Cretaceous. 
Laramie, White. U. 8. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 19, 20, 
22. 1878. 

Tertiary. Utah, Colorado. Included in Post-Cretaceous. Includes Fort Union, 
Judith River, Lignite. 
Laramie group. King. U. 8. Explor. of 40th Parallel, vol. i, pp. 331-339. 1878. 

Cretaceous. Colorado, Wyoming. 
Laramie group. Bannister. Am. Jour. Sci., 3d sen, vol. xvii, pp. 243-245. 1879. 

Tertiary. Rocky Mountains. 
Laramie group, Peale. U. 8. Geol. and Geog. Surv. of Terr., Bull., vol. v, pp. 195- 
200. 1879. 

Poet-Cretaceous. Wyoming. 
Laramie, Stevenson. Chief of Engrs., Rept. 1879, pt. iii, p. 2255. 1879. 

Cretaceous. New Mexico. 
Laramie group, Stevenson. Am. Jour. Sci., 3d ser., vol. xviii, pp. 129-134. 1879. 

Cretaceous. Colorado and New Mexico. 
Laramie, St. John. U. 8. Geol. and Geog. Surv., 11th Ann. Rept, p. 352. 1879. 

Tertiary. Idaho. 
Laramie, White. U. 8. Greol. and Geog. Surv. of Terr., Uth Ann. Rept., pp. 161, 
214-240. 1879. 

Tertiary. Colorado, Wyoming. 
Laramie, Endlich. U. 8. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 88, 
124. 1879. 

Tertiary. Wyoming. Included in Post-Cretaceous. 
Laramie, Gardner. Am. Nat., vol. xiv, p. 565. 1880. 
Laramie group, Stevenson. Am. Jour. Sci., 3d. ser., vol. xxi, pp. 370-371. 1881. 

Tertiary. New Mexico. 
Laramie, Stevenson. Am. Phil. Soc., Proc., vol. xix, p. 505. 1881. 

Cretaceous. Colorado. 
Laramie, Stevenson. U. 8. Greog. and Geol. Surv. W. of 100 M, vol. iii, Suppl. p. 102, 
1881. 

Cretaceous. Colorado, New Mexico. 
Laramie, Stevenson. Am. Phil. Soc., Proc., vol. xx, p. 107. 1882. 

Cretaceous. New Mexico. 
Laramie group, Lesquereux. U. 8. Geol. and Geog. Surv. of Terr., Mon., vol. viii. 
pp. 109-114. 1883. 

Tertiary. 
Laramie, White. U. 8. Geol. and Geog. Surv., 12th Ann. Rept., pt. i, p. 49. 1883. 

Cretaceous. 
Laramie, Dawson. Sci., vol. i, p. 429. 1883. 

Cretaceous. Canada. Included Judith River series. Willow Creek beds, St. Marys 
River series. 



232 NORTH AMERICAN GEOLOGIC FORMATIOl^ NAMES. [bull. 191. 

Liaramie formation, Cross. Colo. Sci. Soc, Proc., vol. i, p. 81. 1884. 

Cretaceous. Colorado. Exact syn. Lignitic. 
Laramie, Ward. U. S. Greol. Surv., 6th Ann. Rept., p. 405. 1885. 

Cretaceous. Tertiary. Rocky Mountains. Exact syn. Fort Union. 
Laramie group, Button. U. S. Geol. Surv., 6th Ann. Rept., pp. 136-140. 1885. 

Cretaceous. Northwest New Mexico. 
Laramie, Willis. U. S. Geol. Surv., Bull., No. 21. 1885. 

Cretaceous. South Dakota. 
Laramie, White. U. S. Geol. Surv., Bull. No. 34. 1886. 

Cretaceous. Utah. Part. syn. Fort Union. 
Laramie group. White. Am. Jour. Sci., 3d ser., vol. xxxv, pp. 432-438. 1888. 

Cretaceous. Rocky Mountains. 
Laramie, Stevenson. Am. Geol., vol. iii, p. 391. 1889. 

Cretaceous. Colorado, New Mexico. 
Laramie group, Newberry. N. Y. Acad. Sci., Trans., vol. ix, pp. 27-32. 1890. 

Cretaceous. Rocky Mountains. 
Laramie, Clark. U. S. Geol. Surv., Bull. No. 83, p. 132. 1891. 

Cretaceous. Interior r^ion. 
Laramie, White. U. S. Geol. Surv., Bull. No. 82, pp. 117, 145, 262. 1891. 

Cretaceous. Great Interior region. Texas. 
Laramie, Cannon. Colo. Sci. Soc., Proc., vol. iv, p. 250. 1893. 

Cretaceous. Colorado. 
Laramie, Weed. U. S. Geol. Surv., Bull. No. 106, p. 18. 1893. 

Cretaceous. Montana. 
Laramie, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 1894. 

Cretaceous. Colorado. 
Laramie, Iddings and Weed. U. S. Geol. Surv., G«ol. Atlas of U. S., Folio No. 1. 1894. 

Cretaceous. Montana. 
Laramie, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 1896. 

Cretaceous. Wyoming. 
Laramie, Weed. Am. Geol., vol. xviii, pp. 201-211. 1896. 

Cretaceous. Montana and Colorado. Part. syns. Edmonton (Tyrrell), Wapiti 
River (Dawson). 
Laramie, Weed and Pirsson. U. S. (jeol. Surv., Bull. No. 139, p. 48. 1896. 

Cretaceous. Montana. 
Laramie, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cretaceous. Montana. 
Laramie, Emmons, Cross and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, pp. 28, 
72. 1896. 

Cretaceous. Colorado. 
Laramie, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, pp. 109-111. 1896. 

Cretaceous. New Mexico. 
Laramie formation, Marcou. Am. Geol., vol. xix, pp. 120-121. 1897. 

Tertiary. 
Laramie formation, Spurr. U. S. Geol. Surv., Mon., vol. xxxi, p. 43. 1898. 

Cretaceous. Colorado. 
Laramie formation, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 58. 1899. 

Cretaceous. Colorado. 
Laramie formation, Weed. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 56. 1899. 

Cretaceous. Montana. 
Laramie formation. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Cretaceous. Colorado. 
Lauderdale chert, McCalley. Ala. Geol. Surv., Rept. on Valley Regions of Ala., 
pt. i, pp. 27, 35. 1896. 

Carboniferous. Alabama. Included in Lower Carboniferous. Includes Harpeth 
shale of Tennessee. Exact syn. Keokuk (?). 



WEEKS.] LARAMIE LAURENTIAN. 238 

ILiaaderdale chert, McCalley. Ala. Geol. Surv., Rept. on Valley Regions, pt. ii, 
pp. 172-183, 240-246, 292-299. 1897. 
Carboniferous. Alabama. Included in Fort Payne chert. 
Xjaurel bed, Foerste. Cin. Soc. Nat. Hist., Jour., vol. xviii, nos. iii, iv, p. 190. 
1896. 
Silurian. Indiana. 
Laurel limestone, Foerste. Indiana Dept. Geol. and Nat. Resources, 2l8t Ann. Rept., 

1896, pp. 217, 230. 1897. 
Upper Silurian. Indiana. 

Laurel limestone, Fberste. Indiana Dept. Geol. and Nat. Resources, 22d Ann. Rept., 

1897, pp. 197, 207, 211. 1898. 

Upper Silurian. Indiana. Exact syn. Dayton lime8tone(?). 
Laurel limestone, Blatchley. Indiana Dept. Geol. and Nat. Resources, 22d Ann. 
Rept., 1897, p. 14. 1898. 

Indiana. 
I«aurentia]i system, Logan. Can. Greol. Surv., Rept. of Prog., 1852-53, p. 8. 1853. 
Lauren tian, Logan. Am. Assoc. Adv. Sci., Proc., vol. ii, pp. 46, 47. 1857. 

Archean. Canada. 
Laurentian, Logan. Can. Inst., new ser., vol. ii, pp. 439-442. 1857. 

Archean. Canada. 
Laurentian, Logan. Am. Assoc. Adv. Sci., Proc, vol. xiii, p. 310. 1860. 

Archean. Canada. 
Laurentian system, Hitchcock. G^ol. of Vt., vol. i, pp. 257-259. 1861. 

Archean. Vermont. 
Laurentian system, Logan. Can. Geol.|Surv., Rept. 1843-1863, pp. 22-49, 836-841. 
1863. 

Archean. Canada. Included in Azoic. 
Laurentian series, Macfarlane. Can. Geol. Surv., Rept. 1863-1866, pp. 116-122. 1866. 

Archean. Canada. 
Laurentian, Hinds. Am. Jour. Sci., 2d ser., vol. xlix, pp. 347-355. 1870. 

Nova Scotia. 
Laurentian series, Hunt. Am. Jour. Sci., 3d ser., vol. iii, pp. 115-125. 1872. 

Archean. New York, New Jersey, Canada. 
Laurentian, Hitchcock. Am. Assoc. Adv. Sci., Proc., vol. xxi, p. 145. 1872. 

Archean. New Hampshire. 
Laurentian, Irving. Wis. Acad. Sci., Trans., vol. ii, 1873-74, p. 108. 1873 (?). 

Wisconsin. 
Laurentian, Hitchcock. Boston Soc. Nat. Hist., Proc., vol. xv, 1872-73, p. 304. 1873. 

New Hampshire. 
Laurentian system, Bailey and Matthew. Can. Geol. Surv., Rept. 1870-71, pp. 30-59. 
1873. 

Archean. New Brunswick. 
Laurentian rocks, Irving. Am. Jour. Sci., 3d ser., vol. viii, pp. 47-48. 1874. 

Archean. Wisconsin. 
Laurentian, Sweet. Wis. Acad. Sci., Trans., vol. iii, 1875-76, p. 41. 1875-1876. 

Wisconsin. 
Laurentian, Hotchkiss. A Geographical and Political Summary of Virginia, p. 22. 
1876. 

Metamorphic. Virginia. Exact syn. Azoic. 
Laurentian series, Huntington. Geol. of N. H., pt. ii, pp. 468-506. 1877. 

Eozoic. New Hampshire. Includes Bethlehem gneiss. 
Laurentian, Hunt. 2d Pa. Geol. Surv., Rept. E, pp. 63-94. 1878. 

Archean. General. 



234 NORTH AMKRtCAN OEOLOQIC POBHATION NAHES. [Bi-LL.m 

Uuirentian, Prime. 2d Pa.GeoI.Sarv., Rept. D*, |)p.5-7. 1878. 

Archean. Pennsylvania. 
Uurentian ttyBteni, Irving, (ieol. of Wis., vol. iii, p|>. 5, 92-99. 1880. 

WiHCODflin. 
Laurentian system, Adams. Ottawa Fiel<t Nat. Club, Trans., 1S79-18S3, voL i, 
pp. 21-31. 1880-1883. 
Archean. Cana<ui. 
Laurentian formation, Miller. Cin. Soc. Nat. Hist, Jour., vol.iv, no. iv, p. 272. 1881. 
Laurentian, Wadaworth. BoiKon Soc. Nat. Hiat, Proc, vol. zxi, 1S80-82, p. IZl. 

1881. 
Laurentian, Chamberiin. (ieol. of Wis., vol. i, p. 64. 1883. 

Archean. Wisconsin, 
laurentian, Whitney and Wadsworth. HarvardColl. Mus. Comp. Zoo)., Ball., vol. vii, 
1880-84, p. 661. imi. 

Laurentian, Winchell. Minn, (ieol. and Nat Hist. Surv., 17th Ann. Rept., pp. 27, 
28. 1889. 

Minnesota. 
Laurentian system, Miller. N. A. Geol. and Pal., p. 17. 188fl. 
Laurentian, Hopkins. Ark. Ueol. Surv., 1890, vol. iv, pp. 49, 50. 1S90. 

Archfan. Arkansas. 
Laurentian, Smith. Geol. See. Am., Bull., vol. iv, p. 333. 1883. 

Arcliean. Ontario. 
Laurentian, Ells, Geol. Sot. Am., Bull., vol. iv, p. 349. 1803. 

Archean. Ottawa, Ontario. 
Laurentian, Barlow. Geol. Soc. Am., Bull., vol. iv, pp. 313-332. 1893. 

Archean, Ontario. 
Laurentian, Upper, Adams. Can. Rec. Scl., vol. vi, p. 169. 1894. 

Archean. Canada. Exact syn. Norian. 
Laurentian, Dawson. Geol. Soc. Am., Bull., vol. v, p. 103. 1894. 

Arehean. Canada. 
Laurentian, Winchell and Grant. Minn. <ieol. and Nat. Hist. Surv., 23d Ann. Sept., 
pp. 53-61. 1895. 

Minnesota. 
Laurentian, Pumpelly. Geol. Soc. Am., Bull., voL iv, p. 382. 1897. 

Archean. Appalacliian region. 
I.:aiirentian, Barlow. Can. Geol. Surv., new ser., vol. x, pp. 481-641. 1898. 

Laurentian, Mclnnes. Can. Geol. Surv., new ser., vol. x, pp. 13H-17H. 1898. 

Archean. Ontario. 
Laurentian, Winchell and Grant. Minn. Geol. and Nat, Hist. Sun-., Finfl Rept.. 
vol. iv, p. 195. 1899. 
Minnesota. 
Laurentian, Walcott. Geol. Soc. Am., Bull, vol. x, p. 222. 1899. 

Archean. Ontario. 
Iiauzou division, Richardson. Can. Geol. Surv., Rept. 1863-1866, pp. 32-36. 1866- 

Lower Silurian. Canada (eastern). Included in Quebec group. 
LauzoQ division, Lc^n. Can. Geol. Surv., Rept. 1863-1866, pp. 4-5. 1866. 
Lauion, Ells. Geol. Soc. Am,, Bull,, vol, i, p. 466. 1889. 
Cambrian. Quebec. Included in Quebec (rroup. 

uzon formation, Elle. Can. Geol. Surv., new ser., vol. iii, pt. ii, pp. 89K-fl3K. 
1889. 
mbro-Sihirian. Canada. Included in Quebec group. 



WEiuts.] LAURENTIAN LE COMPTON. 235 

Lawrence shales, Ha worth. Kan. Univ. Quart., vol. ii, p. 122. 1894. 

Carboniferous. Kansas. 
Lawrence shale, Ha worth. Am. Jour. Sci., 3d ser., vol. 1, p. 460. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Lawrence shales, Kirk. Kan. Univ. Geol. Surv., vol. i, p. 79. 1896. 

Carboniferous. Kansas. 
Lawrence shales, Bennett. Kan. Univ. Geol. Surv., vol. i, p. 113. 1896. 

Carboniferous. Kansas. 
Lawrence shales. Hall. Kan. Univ. Geol. Surv., vol. i, pp. 102-103. 1896. 

Carboniferous. Kansas. 
Lawrence shales, Kan. Univ. Geol. Surv., vol. i, pp. 136-137, 160, 224. 1896. 

Carboniferous. Kansas. 
Lawrence shales, Ha worth. Kan. Univ. Greol. Surv., vol. iii, pp. 57-61, 91, 92, 94, 
104. 1898. 
Carboniferous. Kansas. Included in Douglas formation. Exact syn. Leroy shale. 
Lawrence shale, Keyes. Am. Geol., vol. xxiii, p. 306. 1899. 

Carboniferous. Mississippi Valley. 
Lawrence shales, Keyes. Iowa Acad. Sci., Proc, vol. vii, p. 90. 1900. 

Carboniferous. Mississippi Valley. Included in Coal Measures. 
Lawrence-Crawford limestone, Owen. Rept. Geol. Reconn. Indiana, 1859-60, 
p. 125. 1862. 
Carboniferous. Indiana. Included in Subcarboniferous limestone. 
Lawrentian, Desor. Boston Soc. Nat. Hist., Proc., vol. iii, pp. 357, 358. 1850. 
Lawrencian formation, Billings. Can. Nat., vol. i, pp. 336-346. 1857. 

Tertiary. Canada. 
Le Claire limestone. Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 73-75. 1858. 

Silurian. Iowa. Exact syn. Gait. 
Le Claire limestone, Hall and Whitney. Am. Jour. Sci., 2d ser., vol. xxvii, p. 111. 
1859. 
Silurian. Iowa. 
Le Claire limestone, Hall. Regonts Univ. of N. Y., 20th Ann. Rept., pp. 305-308. 
1867. 
Silurian. Iowa. Included in Niagara. Exact syns. Guelph, Racine limestone 
(Wis.). 
Le Claire limestone, Bradley. Econ. Geol. of 111., vol. ii, p. 495. 1882. 

Silurian. Illinois. Included in Niagara limestone. 
Le Claire limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. Included in Niagara. 
Le Claire limestone, Keyes. Iowa Geol. Surv., vol i, p. 30. 1893. 

Silurian. Iowa, Included in Upper Silurian. 
Le Claire beds, Norton. Iowa Geol. Surv. , vol. iv, pp. 129-130. 1895. 

Silurian. Iowa. Included in Upper Silurian. 
Le Claire stage, Calvin. Iowa Geol. Surv., vol. v, pp. 50-^56. 1896. 

Silurian. Iowa. Included in Niagara series. 
Le Claire limestone, Calvin. Iowa State Univ. Lab. Nat. Hist., Bull., vol. iii, pp. 183- 
189. 1896. 
Silurian. Iowa. Included in Niagara. 
Le Claire limestone, Calvin. Iowa Geol. Surv., vol. vii, pp. 54-55. 1897. 

Silurian. Iowa. Included in Niagara. 
Le Claire stone, Norton. Iowa Geol. Surv., vol. ix, p. 423. 1899. 

Silurian. Iowa. Included in Gower stage. 
Le Conipton limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, pp. 116-117. 1896 
Carboniferous. Kansas. Includes Fusilina limestone. 



236 KORTH AMERICAN GEOLOGIC FORMATION NAMES. Ibull-IBL 

Le Comptcm shalva, Haworth. Kan. Univ. Geol. Surv,, vol. iii, pp. 64, 94. 1898. 

CarboDifcrouH. Kanxas. Included in Shawnee formation and KIk Falla limestone. 
L« Oroud beds, Beyer. Iowa (ieol.Surv. vol., vii, pp. 221-226. 1S97. 

CarlwniferouH. Iowa. Includtil in Kinderhook. 
Le Ito7 Bliale«, Haworth and Kirk. Kaneae I'niv. Quart., vol ii, p. 110. 18M. 

Carboniferous. Kanaaa. 
Leroyahale, Haworth. Kan. Univ. (ieol. Sun-., vol. iii, p. 104. 1898. 

Carboniferous. KauBBB. Exact syn. I.dwrence sliale. 
Le Sueur formation. Keyea. Mo.(ieoI.Surv.. Sheet Kept., No. iv, p. 18, 52-53. 1895. 

Cambrian. Missouri. Included in Upper Cambrian. 
he Sueur limestone, Wheeler. Mo. (ieol. Surv., vol. li, p. 37. 1896. 

Cambrian. Missouri. 
LeodviUe limestone, Kldrid^e. U. S. (Jeol. Surv., Geol. Atlas of U. S., Folio No. 9. 



U. S. Geol. Surv., Geol. Atlas of U. 8., Folio So, 48. 
1898. 

Carboniferous. Colorado. Kxact ayn. Blue limeRlone. 
Leadville limestone, Spurr. U. S. Geol. Surv., Mon., vol. xxxi,pp. 22-30. 1698. 

Carboniferous. Colorado. 
Lebanon limestone. Upper, Safford. Am. Jour. 8ci.,2d eer., vol. xii, p. 256. 1851. 

Silurian. Tennessee. Included in Stones River group. 
I.£bajion limestone. Lower. Safford. Am. Journ. Sci., 2dser., vol. xii, p. 254, 1851. 

•Silurian. Tennessee, Included in Stones lUver group. 
Ijebanon division, Orton. Ohio Geol. Surv., 3d Organization, Ist Ann. R«pt, p. 15. 
1890. 

Silurian. Ohio. Included in Hudson River group. 
Lebceuf conglomerate, Lesley. 2d Pa, Geol. Surv., Final Rept, vol. ii, pp. 1511- 
1514. 1892. 

Devonian. Pennsylvania. Included in Venango. Exact syii, Panama Con- 
glomerate. 
Ledaclay, Dawaon. Can. Nat., vol. ii, pp. 405-414. 1857. 

Tertiary. Canada. Included in Pliocene. 
Ledaclay, Dawson. Can. Nat., new ser., vol. vi, pp. 22, 34-37. 1872. 

Post Pliocene. Canada. 
Leda clay, Matthew, Can. Geol. Surv., Rept. 1877-78, pp. 22EE-31EE. 1B79. 

Pleistocene. New Brunawick. 
Ledaclay, Chalmers. Can, Geol. Sutv., new ser., vol. rii, pp. 111M-116M. 1896, 

Pleistocene. New Brunswick, Nova Scotia, 
Lee conglomerate, Campbell. U. S. Geol, Surv,, Bull. No. Ill, p. 36. 1893. 

Carboniferous. Virginia. Included in Coal Measures. 
Lee conglomerate, Campbell. U. S. Geol. Surv., Geol. Atlas o( U. S., Folio No. 12- 
1894. 

Carboniferous. Kentucky, Virginia, and Tennessee. 
Lee conglomerate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S,, Polio No. 25, 1896. 

Carboniferous, Tennessee. 
Lee conglomerate, Keith. U. S. Geol. Surv., Geol, Atlas of U. S., Folio No, 33. 1S96. 

Carboniferous. Tennessee. Part, syns. Walden sandstone and Lookout sandstone. 
Lee conglomerate, Keith, U. S. Geol, Surv., Geol. Atlas of U. S., Folio No. 40. 1897, 

Carboniferous. Tennessee. 

■e gneiss, Emerson. U. S. Geol. Surv., Mon., vol. xxix, p. 29. 1898. 
-Igonkian. Massachusetts. 



WEEKS.] LE COMPTON LEWI8T0WN. 237 

Lee formation, Campbell. U. S. Greol. Surv., Geol. Atlas of U. S., Folio No. 46. 1898. 

Carboniferous. Kentucky. 
Lee formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 47. 1898. 

Carboniferous. Kentucky. Included in Pennsylvanian series. 
Lee gneiss, Emerson. U. S. Geol. Surv., Bull. No. 159, p. 33. 1899. 

Pre-Cambrian. Massachusetts. 
Lee gneiss, Emerson. U. S. Geol. Surv., Bull. No. 159, pp. 33-34. 1899. 

Pre-Cambrian. Massachusetts. 
Lee conglomerate, Campbell. U. S. Geol. Surv., Geol. Atlas of U.S., Folio No. 59. 
1899. 

Carboniferous. Virginia, and Tennessee. 
Lee formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 53. 1899. 

Carboniferous. Tennessee. Included in Pennsylvanian series. 
Ijeliig:li coal, Zachariah. Am. Jour. Sci., 1st ser., vol. iv, pp. 1-8, vol. ix, p. 397. 
1821. 

Carboniferous. Pennsylvania. Included in Anthracite formation of Wilkes- 
barre, etc. 
lieitcbfield marls, Shaler. Ky. Geol. Surv., new ser., vol. iii, p. 391. 1877. 

Carboniferous. Kentucky. Included in Chester group. 
lienoir limestone, Safford and Killbrew. Elementary Geol. of Tenn., pp. 130-131. 
1876. 

Silurian. Tennessee. Exact syn. Chazy of New York and Canada. 
Ijeoii series, Dumble. Texas Geol. Surv., Ist Ann. Rept., pi. iii, p. Ixii. 1890. 

Silurian. Texas. Includes Hoover, Wyoming, and Beaver divisions. 
Leon series, Comstock. Texas Geol. Surv., 1st Ann. Rept., p. 295. 1890. 

Silurian. Texas. Includes Beaver division. 
Xieon series, Comstock. Texas Geol. Surv., 2d Ann. Rept., pp. 565-566. 1891. 

Silurian. Texas. Includes Beaver, Wyoming, and Hoover divisions. 
Ijeoxia formation. Hill and Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 42. 1898. 

Tertiary or Pleistocene. Texas. 
Leona formation, Vaughan. U. S. Geol. Surv., Geol Atlas of U. S., Folio No. 64. 
1900. 

Pleistocene. Texas. 
Levant series, Rogers. Am. Jour. Sci., 1st ser., vol. xlvii, p. 155. 1844. Includes 

Medina, Clinton, Niagara, and Onondaga salt group of New York. 
Levant series, Rogers. Geol. of Pa., vol. i, pp. 105, 126-131, 271, et. seq., vol. ii, 
p. 753. 1858. 

Silurian. Pennsylvania. Includes Oneida and Medina. 
Levis formation, Logan. Can. Geol. Surv., Rept. 1843-63, pp. 225-297. 1863. 

Lower Silurian. Canada (eastern). Included in Quebec group. Exact syn. 
Calciferous. 
Levis division, Richardson. Can. Geol. Surv., Rept. 1863-66, pp. 31-32. 1866. 

Lower Silurian. Canada (eastern). Included in Quebec group. 
Levis limestone, Hitchcock. Am. Mus. Nat. Hist., Bull., vol. i, 1881-86, p. 179. 1884. 

Vermont and New Hampshire. 
Levis formation, Ells. Geol. Soc. Am., Bull., vol. i, p. 462. 1889. 

Ordovician. Vermont and Canada. Included in Quebec group. 
Levis formation, Ells. Can. Geol. Surv., new ser., vol. iii, pt. ii, pp. 25K-84K. 1889. 

Ordovician. Canada. Included in Quebec group, Cambro-Silurian. 
Levis, Ami. Geol. Soc. Am., Bull., vol. ii, p. 495. 1891. 

Ordovician ( ? ) . Quebec. 
Lewistown limestone, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 127-135. 1881. 

Silurian. Pennsylvania. Exact syn. Lower Helderberg. 



238 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Lewistown limestone, Claypole. 2d Pft. Geol. Surv., Kept. F*, p. 38. 1885. 
Silurian. Pennsylvania. Included in Lower Helderberg. Exact syn. Bossard- 
ville limestone. 
Lewistown limestone, White. 2d Pa. Geol. Surv., Kept. T», pp. 123-127. 1885. 

Silurian. Pennsylvania. Included in Lower Helderberg. 
Lewistown limestone, D'Invilliers. 2d Pa. Geol. Surv., Rept. F*, pp. 269,307,308, 
319, 327, 342, 344, 350, 389. 1891. 
Silurian. Pennsylvania. Included in Lower Helderberg. 
Lewistown limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 969,974. 
1892. 
Silurian. Pennsylvania. Included in No. vi. Exact syn. Bossardville limestone. 
Lewistown limestone, Darton. Am. Geol., vol. x, p. 15. 1892. 

Silurian. Virginia. Part syn. Lower Helderberg. 
Lewistown limestone, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios No. 14, 32. 
1894, 1896. 
Silurian. Virginia and West Virginia. Includes Lower Helderberg, Salina, and 
Niagara. Exact syns. Rogers's No. vi and Pre-Meridian. 
Lewistown, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 1896. 

Silurian. West Virginia and Maryland. 
Lewistown, Clark. Md. Geol. Surv., vol. i, p. 157. 1897. 

Silurian. Maryland. Part syns. Niagara, Lower Helderberg. 
Lewistown formation, Clark. Md. Geol. Surv., vol. i, p. 182. 1897. 

Silurian. Maryland. Includes Niagara, Salina, and Lower Helderberg. 
Lewistown, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Silurian and Devonian. Maryland. 
Lewistown limestone, Darton. U. S. Geol. Surv., Greol. Atlas of L^. S., Folio No. 61. 
1899. 
Silurian. Virginia and West Virginia. 
Lexington limestone, Campbell. L^. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 46. 
1898. 
Silurian. Kentucky. 
Leyden phyllite, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet 
1892. 
Silurian. Massachusetts. 
Leyden argillite, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 201-210. 1898. 

Silurian. Massachusetts. 
Leyden argillite, Emerson. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 50. 1898. 

Silurian. Massachusetts. 
Licking shale. Hicks. Am. Jour. Sci., 3d ser., vol. xvi, p. 216. 1878. 

Carboniferous. Ohio. Included in Waverly group. 
Lignite group, Safford. Geol. Reconn. of the State of Tenn., Ist Rept., pp. 162-163. 
1856. 
Tertiary (?) . Tennessee. 
Lignitic group, Northern. Hilgard. Rept. on Geol. and Agric. of Miss., pp. 110-123. 
1860. 
Eocene. Mississippi. 
Lignitic group, Great, Meek and Hayden. Am. Jour. Sci., 2d ser., vol. xxxiv, 
p. 138. 1862. 
Eocene (?). Tertiary. Nebraska. Exact syn. Fort Union group. 
Lignite (Lower), Hilgard. Am. Jour. Sci., 2d ser., vol. xliii, p. 34. 1867. 

Tertiary (?). Alabama and Mississippi. Exact syn. Great Lignite group. 
Lignite deposits, Hayden. Am. Jour. Sci., 2d ser., vol. xlv, pp. 198-208. 1868. 
Tertiary. Wyoming and Colorado. 



WEEKS.] LEW18T0WN ^LIGNITE. 239 

Lignitic group, Northern. Hilgard. Am. Jour. Sci., 3d eer., vol. ii, pp. 394-396. 
1871. 
Eocene. Mississippi, Alabama, Georgia, Texas, Arkansas. Exact syns. Buhr- 
stone group, Siliceous Claiborne. Part syns. Lagrange and Porter^s Creek 
groups, Flatwoods clay. 
Lignite, Lesquereux. U. S. Geol. Surv. of Terr., 6th Ann. Rept., p. 315. 1873. - 

Tertiary. Rocky Mountains. Included in Eocene. 
Lignitic formation, Lesquereux. Am. Jour. Sci., 3d ser., vol. vi, pp. 441-450; vol. vii, 
pp. 546-557. 1873-74. 
Eocene (?). Rocky Mountain region. 
Lignite formation, Dawson. Rept. of the Tertiary Lignitic formation in vicinity of 
49th Parallel. 1874. 
Tertiary. British Columbia. 
Lignite beds, Newberry. Am. Jour. Sci., 3d ser., vol. vii, pp. 399-404. 1874. 

Cretaceous (?). Western United States. 
Lignitic group, Hayden. U. S. Geol. and Geog. Surv. Terr., Bull., No. 2, vol. i, 
pp. 1-2. 1874. 
Western Territories. 
Lignitic, Hayden. TJ. S. Geol. and Geog. Expl. of Terr., 1873, pp. 26-27. 1874. 

Tertiary, Cretaceous. Colorado. 
Lignite formation, Marvine. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 106. 
1874. 
Cretaceous (?). Colorado, 
lignitic Post-, Marvine. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 128. 1874. 

Tertiary. Colorado. 
Lignite, Cope. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 432. 1874. 

Tertiary. Colorado. Exact syn. Fort Union. 
Lignitic, Lesquereux. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 367. 1874. 

Tertiary. Colorado. Included in Eocene. 
Lignitic group, Stevenson. Am. Phil. Soc, Proc, vol. xiv, p. 447. 1875. 

Tertiary. Includes Lower Lignitic, Upper or Great Lignitic. 
Lignitic group, Hayden. U. S. Geol. and Greog. Surv. of Terr., Bull., vol. i, pp. 401- 
411. 1876. 
Cretaceous and Tertiary. 
Lignite, Hayden. U. S; Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 19. 1876. 
Tertiary. Rocky Mountains. Includes Fort Union, Wind River, White River, 
Loup Fork, and Monument Creek groups. 
Lignite formation, Engelmann. Eng. Dept. U. S. A., Simpson's Expls. of Great 
Basin, p. 281. 1876. 
Cretaceous or Eocene. Wyoming. 
Lignitic, Peale. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept, p. 152. 1876. 

Tertiary. Included in Eocene. 
Lignitic, Lesquereux. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 275. 
1876. 
Tertiary. 
Lignite group, Dawson. Can. Geol. Surv., Rept. 1875-76, pp. 255-260. 1877. 

Miocene (?). British Columbia. 
Lignitic formation, Hayden. U. S. Geol. and Geog. Surv. Terr., Mon., vol. vii, 

pt. ii, pp. iii-ix. 1878. 
Lignitic formations, Lesquereux. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. 
vii, pp. 3-31, 309-355. 1878. 
Tertiary. 
Lignitic, Smith. Ala. Geol. Surv., Bull. No. 1. 1886. 
Tertiary. Alabama. 



240 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.191. 

Lijfnitlr, Smith and Johnnon. U. S. Geol. Surv., Bull. No. 43, pp. 18, 38. 1887. 
Tertiary. Alalwma. Infludtnl in Lower Eocene. Includes Hatchetigbee, Woods 
Bluff, Bells Landing, Nanafalia, Matthews Landing, Naheola, Black Bluff, 
and Midway. 
Lignite group, Loughridge. Ky. (ieol. 8urv., Jackson Purchase region, pp. 41-^2. 
1888. 
FxH'cne. Kentucky. Kxai't syn. Porter's Creek and Bluff Lignite in Tennessee. 
Lignitic division, 8i)encer. (ia. (leol. Surv., Ist Rept. of Prog., 1890-91. 1891. 
Tertiary. (Jeorgia. Included in Lower Eocene. Includes Hachetigbee, Baahi, 
Tuskahonia, Nanafalia, and Midway or Clayton. 
Lignitic, Mc(tee. V. S. Geol. Surv., 12th Ann. Rept., pt. i, p. 415. 1891. 
Tertiary. Coastal Plain, (Julf States. Includes Hickman group, Porters Creek 
group, Bluff lignite, Hatchetigbee, Bashi, Tuskahoma, Nanafalia, and Midway 
l>eds of Alabama. Camden series, Timber Belt or Sabine. 
Lignitic, (^ark. U. 8. (Jeol. Surv., Bull. No. 83, pp. 58, 66, 72. 1891. 
Tertiary. Kentucky, Mississippi, Alabama. Included in Eocene. Includes 
IIatchetigl)ee, W(K)ds Bluff, Bells Landing, Nanafalia, Matthews Landing, 
Naheola, Black Bluff, and Midway. Exact syns. Porters Creek group, Cam- 
den series of Arkansas. 
Lignitic stories, Si>encer. (ia. Geol. Surv., 1st Rept. of Prog., p. 43. 1891. 

Tertiary. (Jeorgia. Included in Lower Bkjcene. 
Lignitic stage, Harris. Ark. (ieol. Surv., 1892, vol. ii, pp. 55-86. 1892. 

Tertiary. Arkansas. Included in Eocene series. 
Lignite beds, Dall and Harris. V. S. Geol. Surv., Bull. No. 84, pp. 228, 236, 237, 
242. 1892. 
Tertiary Washington. 
Lignitic, Smith. Ala. Geol. Surv., Bull. No. 2, p. 47. 1892. 
Tertiary. Alabama. Includes Midway or Pine barren = Clayton limestone. Black 
Bluff, Naheola, Matthews Landing, Nanafalia, Coal Bluff, Bells Landing or 
Tuskahoma, Woods Bluff or Bashi, and Hatchetigbee. 
Lignitic, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain of 
Ala., pp. 147, 198, 488. 1894. 
Tertiary. Alabama. Included in Eocene. Includes Hatchetigbee, Woods Bluff 
or Bashi, Bells landing or Tuskahoma, Nanafalia, Matthews Landing, 
Naheola, Black Bluff, and Lucamochee. 
Lignitic stage, Vaughan. Am. (ieol., vol. xv, p. 209. 1895. 

Tertiary. Louisiana. Included in Eocene. 
Lignitic stage, Harris. Am. Pal., Bull. No. 9, pp. 1-36. 1897. 

Tertiary. Gulf States. Included in Eocene. 
Lignitic stage, Harris and Veatch. La. State Exp. Stat., pt. v, p. 64. 1899. 

Tertiary. Louisiana. Included in Eocene. 
Lime Creek beds, W^illiams. Am. Jour. Sci., 3d ser., vol. xxv, pp. 97-104. 1883. 

Devonian. low^a. Included in Chemung group. 
Lime Creek shales, Keyes. Iowa Geol. Surv., vol. i, pp. 46-47. 1893. 

Devonian. Iowa. 
Lime Creek shales, Calvin. Iowa (tcoI. Surv., vol. vii, pp. 161-170. 1897. 

Devonian. Iowa. 
Lime Creek shales, Williams. Iowa Geol. Surv., vol. x, p. 357. 1900. 
"^*»vonian. Iowa. 

clays, Dall. V. S. (ieol. Surv., 18th Ann. Rept, pt. ii, p. 337. 1898. 
V. Costa Rica. Included in Pliocene, 
larble, Logan. Kan. Univ. Geol. Surv., vol. ii, p. 216. 1897. 
retaceous. Kansas. Included in Benton. 



WBEK8.] LIGNITE LITTLE GRIZZLY CREEK. 241 

Lincoln marble, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25, 27. 1898. 

Upper Cretaceous. Kansas. Included in Lower Benton. 
Lincoln slate, Hobbs. Am. Geol., vol. xxiii, p. HI. 1899. 

Cambrian. Massachusetts. 
landen limestone, Safford and Killebrew. Elementary Geol. of Tenn., pp. 146-148. 
1876. 
Silurian. Tennessee. Included in Upper Silurian. 
Xaixigrula flag, Marcou. Boston Soc. Nat. Hist., Proc., vol. viii, 1861-62, pp. 241, 244. 
1861. 
Vermont and Canada. Included in Upper Taconic. 
Lingula grits, Broadhead. Mo. Geol. Surv., Rept 1873-74, p. 357. 1874. 

Silurian. Missouri. Included in Primordial. 
lannville slates, Kerr. N. C. Geol. Surv., Rept. 1866-67, pp. 32-33. 1869. 

North Carolina. 
Xiisbon group, Hitchcock. Am. Jour. Sci., 3d ser., vol. vii, pp. 472-473. 1874. 

New Hampshire. 
Lisbon group, Hitchcock. Geol. of N. H , pt. ii, pp. 277-293, 358. 1877. 

Eozoic. New Hampshire. Included in Huronian. 
Lisbon beds, Harris. Am. Jour. Sci., 3d ser., vol. xlvii, p. 304. 1894. 

Tertiary. Included in Lower Claiborne of Eocene. 
Lisbon shales, Williston. Kan. Univ. Quart., vol. iv, p. 252. 1896. 

Upper Cretaceous. Kansas. Exact syn. Pierre shales. 
Lisbon shales, Cragin. Colo. College Stud., vol. vi, p. 52. 1896. 

Cretaceous. Kansas. Included in Lower Fort Pierre (?). 
Lisbon shale, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-27. 1898. 

Upper Cretaceous. Kansas. Exact syn. Pierre shale, or Fort Pierre shale. 
Lisbon beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 344. 1898. 

Tertiary. Alabama. Included in Claibomian stage. Eocene. 
laista Blanca division, Dumble. Am. Inst. Mg. Engrs., Trans., vol. xxix, p. 143. 
1900. 
Mexico. Included in Trias. 
Lithogrraphic limestone, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 105, 
177,196. 1855. 
Devonian. Missouri. Included in Chemung. 
Lithographic limestone, Shumard. Mo. Geol. Surv., Repts., 1855-1875, p. 207. 1873. 

Carboniferous. Missouri. Included in Lower Carboniferous, 
lithographic limestone, Broadhead. Mo. Geol. Surv., Rept. 1873-74, pp. 27, 66. 
1874. 
Carboniferous. Missouri. Included in Chouteau group. 
Lithographic limestone, Keyes. Geol. Soc. Am., Bull., vol. iii, p. 288. 1892. 

Lower Carboniferous. Missouri. Exact syn. Louisiana. 
Lithographic limestone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 394. 1894. 

Lower Carboniferous. Missouri. Exact syn. Louisiana limestone. 
Lithographic limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1899. 

Carboniferous. Arkansas. Included in Kinderhook. 
Little Coxnpton shales, Shaler, Wood worth, and Foerste. U. S. Geol. Surv., Mon., 
vol. xxxiii, p. 383. 1899. 
Cambrian. Rhode Island, 
little Qenesee conglomerate, Prosser. Roch. Acad. Sci., Proc, vol. ii, pp. 50-124. 
1892. 
Devonian. New York. Exact syn. Olean conglomerate (?). 
Little Grizzly Cfreek, Turner. Am. Geol., vol. xiii, p. 230. 1894. 
Carboniferous. California. Included in Upper Carboniferous. 

Bull. 191—02 16 



242 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullISL 

Little OriMly Creek beds. Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 448. 
1894. 

Caibonlferoufl. California. Included in Upper Carboniferous. 
Little Kiver group, Matthew. Can. Nat., vol. viii, pp. 244, 251-153. 1863. 

New Brunswick. 
Little River group, Matthew. Can. Roy. Soc., Trans. 1894, vol. xii, sec. iv, pp. 89-111. 
1895. 

Devonian. New Brunswick. Exact syns. Nos. 2 and 3, Dawson. 
Little Traverse Bay limestones, Douglas. Mich. Legis., Doc., vol. 1, No. 11, 4th 
Ann. Rept State Geol., 1840, p. 550. 1841. 

Michigan. 
Little Traverse Bay group, Winchell. Mich. Geol. Surv., Rept. Prog., p. 28. 1871. 

Devonian. Michigan. 
Little Vein (coal), Crawford. Cal. State Mg. Bur., 12th Ann., vol. xii, p. 43. 1894. 

Lower Tertiary or Upper Cretaceous. California. 
Living^ston limestone, Worthen. Econ. Geol. of Illinois, vol. iii, pp. 339-348. 1882. 

Carboniferous. Illinois. Included in Coal Measures. 
Livingston, Weed. U. S. Geol Surv., Bull. No. 106, p. 21. 1893. 

Cretaceous. Montana. Included in Post- Laramie. 
Livingston, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 1. 
1894. 

Cretaceous. Montana. 
Livingston, Cross. U. S. Geol. Surv., Mon., xxvii, p. 220. 1896. 

Cretaceous. Montana. Exact syn. Denver. 
Livingston, Weed. Am. Geol., vol. xviii, pp. 203-204. 1896. 

Tertiary or Cretaceous. Montana. Included in Post-Laramie, Colorado. 
Livingston, Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 49. 1896. 

Cretaceous. Montana. 
Livin^ton, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Cretaceous. Montana. 
Livingston formation, Weed. U. S. Geol. Surv., Geol Atlas of U. S., Folio No. 56. 
1899. 

Cretaceous(?). Montana. 
Llano group, Wolcott. Am. Jour. Sci., 3d ser., vol. xxviii, p. 431. 1884. 

Cambrian. Texas. 
Llano series, Dumble. Texas Geol. Surv., let Ann. Rept., pi. iii, p. Ivii. 1890. 

Algonkian. Texas. Included in Texan system. 
Llano series, Walcott. Geol. Soc. Am., Bull., vol. x, p. 218. 1899. 

Algonkian. Texas. Part. syn. Grand Canyon series of Arizona. 
Llano estacado, Hill. Geol. Soc. Am., Bull., vol. iii, p. 87. 1892. 

Tertiary. New Mexico. 
Lockatong series, Salisbury. N. J. Geol. Surv., Rept. 1896, pp. 40-47. 1897. 

Juratriae. New Jersey. Included in Newark system. 
Lockatong series, Kummel. Jour, of Geol., vol. v, pp. 544-547. 1897. 

Juratrias. New Jersey. Included in Newark system. 
Lockatong series, Kummel. N. J. Geol. Surv., Rept. 1897, pp. 36-41. 1898. 

Juratrias. New Jersey. 
Lockatong group, Kummel. Jour, of Geol., vol. vii, pp. 25-26. 1899. 

Juratrias. New York and New Jersey. Included in Newark. 

>re, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mountains, pp. 41, 
56, 147. 1876. 
oniferous. Utah. 



WBEK8.] LITTLE GRIZZLY CREEK LOGAN. 243 



formation, Harper. Prelim. Rept. Geol. and Agric, Miss., p. 236. 1857. 
Mississippi. Included in Rocks overlying the Miocene formation. Exact syn. 
Bluff formation. 
Loess, Hilgard. Am. Jour. Sci., 2d ser., vol. xli, pp. 318-319. 1866. 

Pleistocene. Mississippi. 
Loess, Hilgard. Am. Jour. Sci., 3d ser., vol. ii, p. 403. 1871. 

Pleistocene. Mississippi Valley. 
Loe88> Aughey. U. 8. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., p. 245. 1876, 

Pleistoc^ie. Nebraska. 
Loess formation. Cannon. Colo. Sci. Soc., Proc., vol. iii, p. 59. 1888. 

Pleistocene. Colorado. 
Loess, Chamberlin and Salisbury. Am. Jour. Sci., 3d ser., vol. xli, pp. 360-364. 
1891. 
Pleistocene. Mississippi Valley. 
Loess, Norton. loWa Geol. Surv., vol. iv, pp. 173-174. 1896. 

Pleistocene. Iowa. 
Loess, Todd. Mo. Geol. Surv., vol. v, pp. 126-132. 1896. 

Pleistocene. Missouri. 
Loess, Bain. Iowa Geol. Surv., vol. v, pp. 155-166, 282-284. 1896. 

Pleistocene. Iowa. 
Loess, Tilton. Iowa Geol. Surv., vol. v, pp. 318-319. 1896. 

Pleistocene. Iowa. 
Loess, Calvin. Iowa Geol. Surv., vol. v, pp. 63-70. 1896. 

Pleistocene. Iowa. 
Loess, Calvin. Iowa Geol. Surv., vol. vii, pp. 88-90. 1897. 

Pleistocene. Iowa. 
Loess, Beyer. Iowa Geol. Surv., vol. vii, pp. 235-238. 1897. 

Pleistocene. Iowa. 
Loess, Bain. Iowa Geol. Surv., vol. vii, pp. 340-344, 463-466. 1897. 

Pleistocene. Iowa. 
Loess, Tilton and Bain. Iowa Geol. Surv., vol. vii, pp. 522-523. 1897. 
Pleistocene. Iowa. 
. Loess, Leonard. Iowa Geol. Surv., vol. viii, pp. 86-88. 1898. 
Pleistocene. Iowa. 
Loess, Calvin. Iowa Geol. Surv., vol. viii, pp. 245-246. 1898. 

Pleistocene. Iowa. 
Logman sandstones, Andrews. Ohio Geol. Surv., Rept. Prog. 1869, pp. 62, 76. 1870. 

Ohio. 
Logan sandstone, Andrews. Ohio Geol. Surv., 1869, p. 79. 1871. 

Ohio. 
Logan sandstone, Andrews. Ohio Geol. Surv., Rept. Prog., 1870, p. 59. 1871. 

Ohio. Included in Waverly group. 
Logan sandstone. Read. Ohio Geol. Surv., vol. iii, p. 816. 1878. 

Carboniferous. Ohio. 
Ix>gan .group, Orton. Rev. of Strat. Geol. of Eastern Ohio, p. 14. 1880. 
Carboniferous. Ohio. Includes Logan sandstone, Olive shales, Licking shales, 
Waverly conglomerate, and Black Hand conglomerate. 
Logan series, Orton. Ohio Geol. Surv., Prelim. Rept. Petroleum and Inflammable 
Gas, p. 24. 1886. 
Ohio. Included in Waverly series. 
Logan group, Orton. Ohio Geol. Surv., vol. vi, pp. 3, 39. 1888. 
Carboniferous. Ohio. Included in Waverly group. Exact syns. Olive shales, 
Logan sandstone, and Waverly conglomerate. 



244 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bcll.191 

Logan group, Herrick. Denison Univ. Sci. Lab., Bull., vol. iv, pp. 103, 105. 1888. 

Ohio. Included in Cuyahoga or Waverly series. 
Logan group, Orton. Ohio Geol. Surv., 3d Organization, Ist Ann. Kept, pp. 39-42. 
1890. 
Carboniferous. Ohio. Part. syn. Shenango sandstone (Pennsylvania) and Olive 
shade. 
Logan group, Orton. Ohio (ieol. Surv., Rept., vol. vii, pp. 4, 32. 1893. 

Carboniferous. Ohio. Included in Waverly group. 
Lo^e Green, Hill. Harvard Coll. Mus. Comp. Zool., Bull., vol. xxxiv, p. 42. 
1899. 
Cretaceous. Jamaica. Included in Blue Mountain series. 
Lohn bed, Drake. Texas (ieol. Surv., 4th Ann. Rept., p. 408. 1893. 

Carboniferous. Texas. Cisco division. 
Lone Mountain limestone, Hague. U. S. Geol. Surv., 3d Ann. Rept., pp. 253,262. 
1883. 
Silurian. Nevada. 
Lone Mountain limestone, Hague. U. S. Geol. Surv., Mon., vol. xx, p. 57. 1892. 

Silurian. Nevada. 
Long: Grove series, Dumble. Texas Geol. Surv., Ist Ann. Rept., pi. iii, p. Iv. 
1890. 
Archean. Texas. Included in Burnetan system. 
Long Mountain series, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, p. Ivi. 
1890. 
Archean. Texas. Included in Bumetan system. 
Longrmeadow, Emerson. Geol. Soc. Am., Bull., vol. ii, p. 462. 1891. 

Trias. Massachusetts. 
Longmeadow brownstone, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 6. 1895. 

Trias. Massachusetts. 
Longmeadow sandstone, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 364-369. 
1898. 
Juratrias. Massachusetts. Included in Connecticut River sandstone. 
Longmeadow sandstone, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 
50. 1898. 
Juratrias. Massachusetts. 
Longnxrood red shale, Darton. Geol. Soc. Am., Bull., vol. viii, pp. 367, 382, 383. 
1894. 
Silurian. New York. Included in Medina (?). 
Lookout sandstone, Hayes. Ala. Geol. Surv., Bull., No. 4, p. 49. 1892. 

Carboniferous. Alabama. Included in Coal Measures. 
Lookout sandstone, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 2,4, 
6, 8, 19, 21, 22, 35. 1894-5-6. 
Carboniferous. Georgia, Tennessee, Alabama. 
Lookout sandstone, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 35. 
1896. 
Carboniferous. Alabama. Exact syn. Millstone grit of Smith, 1878. 
Ix)okout formation. White. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 817-818. 
1900. 
Carboniferous. Tennessee. 
' *>on Biver shales, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 4ID, 
53D, 56I)-57D. 1893. 
'^taceous. Canada. Included in Colorado group. 
line shale, Emmons. Geol. of N. Y., pt. ii, pp. 119-123, 401. 1842. 
Bozoic. New York. Included in New York Transition system, Champlain 
group. Part. syn. Pulaski shale. 



WEEKS.] LOGAN LOniSIANA. 245 

Lorraine shales, Emmons. Agric. of N. Y., vol. i, pp. 124-125. 1846. 

New York. Included in New York system, Champlain division. 
Lorraine shale, Murray. Can. Geol. Surv., Rept. of Prog., 1847-48. 1849. 

Silurian. Ontario. 
Lorraine shales, Marcou. Boston Soc. Nat. Hist., Proc., vol. viii, 1861-62, pp. 240, 
241, 249. 1861. 
Vermont and Canada. Included in Lower Silurian. Exact syns. Pulaski shales 
and Hudson River group. 
Lorraine shale, Hough. Am. Jour, of Agric. and Sci., vol. v, p. 322. 1879. 

Silurian. New York. 
Lorraine, White. 2d Pa. Geol. Surv., Rept. T% pp. 147-151. 1886. 

Silurian. Pennsylvania. 
Lorraine, Walcott. Geol. Soc. Am., Bull., vol. i, p. 344. 1889. 

Silurian. New York. Exact syn. Hudson River. 
Lorraine, Ami. Geol. Soc. Am.,. Bull., vol, ii, pp. 495. 1891. 

Silurian. Quebec. 
Lorraine group. Ami. Ottawa Field Nat. Club., Trans. 1892-93, vol. viii, p. 43. 
1892. 
Ordovician. Canada. Included in Upper Ordovician. Exact syn. Hudson River 
group. 
Lorraine shale, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 100, 108, 116. 1893. 

Silurian. New York. 
Lorraine beds, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Silurian. New York. Included in Cincinnatian. 
Losee Pond gneiss, Wolff and Brooks. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
p. 439. 1898. 
Pre-Cambrian. New Jersey. 
Lost Creek limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 806. 1892. 

Silurian. Pennsylvania. Included in No. v. 
Lost Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 422. 1893. 

Carboniferous. Texas. Included in Albany division. 
Lost Kiver limestone, Kindle. Indiana Dept. Geol. and Nat. Resources, 20th Ann. 
Rept, 1895, p. 367. 1896. 
Indiana. 
Loudon shales, Williams and Clark. Maryland; Its Resources, Industries, and 
Institutions, p. 68. 1893. 
Cambrian. Maryland. 
Loudon, Keith. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 324. 1894. 

Cambrian. Virginia and Maryland. 
Loudon, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 10. 1894. 

Cambrian. Virginia, Maryland, and West Virginia. 
Loudon formation, Clark. Md. Geol. Surv., vol. i, pp. 176-177. 1897. 

Cambrian. Maryland. 
Louisiana limestone, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 289. 1892. 
Lower Carboniferous. Missouri. Included in Mississippian. Exact syn. Litho- 
graphic limestone. 
Louisiana limestone, Keyes. Iowa Geol. Surv., vol. i, pp. 54-55. 1893. 
Carboniferous. Iowa. Included in Kinderhook. Exact syn. Lithographic 
limestone. 
Louisiana limestone, Keyes. Mo. Geol. Surv., vol., iv, pp. 30, 51-55. 1894. 
Lower carboniferous. Missouri. Included in Kinderhook stage. Exact syn. 
Lithographic limestone. 
Louisiana limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 359. 1894. 
Lower Carboniferous. Missouri. 



240 HORTH AMERICAN GEOLOGIC FOBMATIOH NAMES. [mtluisi. 

LouitiUna linieetone, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, pp. 300, 304. 1S94. 

Lower Carboniferous. Missouri. Included in Kinderhook stage. Exact syn. 
Litliographic limestone. 
LouisifuiBi limestone, Keyes. St. Louis Acud. Set., Trans., vol. vii, p. 359. 18117. 

Devonian. MJBSOuri. Exact eyn. Lithographic limeetone. 
Louisiana limestone, Shepard. Mo. Geol. Surv., vol. xii, pp. 40, MrSR. 1808. 

Lower Carboniferous. Missouri. Included in Kinderhook stage. Exact sp. 
Lithographic limestone. 
Louisiana limestone, Keyee. Iowa Acad. Bci., Proc, vol. v, p. 63, 1808. 

Devonian. Iowa. 
Louiriana limestone, Keyes. Jour, of Oeol., vol. viii, p. 316. 1000. 

Carbon if erouH. MiMsissippi Valley. 
Louisrllle limestones, Hall. Paleontology of N. Y., vol. v, pt. ii, pp. 130-147. 1879. 

Devonian. New York. 
Louisville limestone, Foerste. Indiana Dept. Oeo\. and Nat. Resources, 21st Ann. 
Rept., 1896, pp. 217, 232, 1897. 

Upper Silurian. Indiana. 
Louisville limestone, Foerale. Indiana Dept. Geol. and Nat Resources, 22d Ann. 
Rept, 1807, pp. 107, 207, 214. 1808. 

Upper Silurian. Indiana. 
Iiouisville-Delphi black slate, Collett. Indiana Geol. Stirv., 3d and 4th Ann. 
Repta. for 1871-72, pp. 294, 306. 1872. 

Devonian. Indiana. 
Iioup Fork group, Cope. U. R. Geol. Surv. W. of 100th Meridian, vol. iv, pt ii, 
pp. 20, 361, 1877. 

Tertiary. New Mexipo. 
Loop Fork, Cope. U. S. Geol. and Geog. Surv, of Terr., Mon., vol. iii, pp. 16-19- 
1881. 

Tertiary. Includes TichuHptus and Procametus beds. 
Lonp Fork group, Sternberg, Kansas City Rev., vol. vi, pp. 205, 208. 1882. 

Tertiary. Kansas. 
Loup Fork, Cope. Am. Phil. Soc., Proc., vol. isi, p. 308. 1884. 

Tertiary. New Mexico. Included in Miocene. 
Loup Fork, Cope. Am. Phil. Soc., Proc., vol. xxiii, p. 146. 1885. 

Tertiary. Mexico. Included in Miocene. 
Loup Fork, Cn^n. Am. Geol., vol. viii, p. 29. 1891. 

Tertiary. Indian Xerrilory. 
Loup Fork, Dall and Harris. U. S. Geol. Surv.. Bull. No. 84, pp. 292, 396. 1892. 

Tertiary. South Dakota, Nebraska. 
Loup Fork beds, Cummins. Texas Geol. Surv., 4th Ann. Kept, pp. 203-2U8. 1893. 

Tertiary, T^xas. 
Loup Fork, Scott Geol. Soc. Am., Bull., vol. v, p. 605. 1804. 

Tertiary. Nebraska. Included in Upper Miocene. Includes Palo Dnro and 
Anther, Nebraska and Deep River beds. 
Loup Biver beds. Meek and Hayden. Phil. Acad. Nat Sci., Proc., vol. xiii, pp. 433, 
435. 1862. 

Tertiary. Nebraska. Exact syn. Pliocene. 
Loup River, Hayden. Phil. Acad. Nat. Sci., Jour., vol. vii, 2d ser., p. 13. 1689. 

Tertiary. Dakota and Nebraska. Exact syn. Pliocene. 
T^up River, Hayden. U. S. Geol, Surv. of Wyoming, Rept. p. 03. 1871. 

Tertiary, Included in Pliocene. 

up Biver. Hayden. U. S. Geol. Sun-, of Terr., l8tr-3d Ann. Repts., pp. 66, IBS. 



WEEKS.] Louisiana — MachucA. 24^ 

liO-wer Cross Timber sands, Durable. Texas Geol. Surv., Ist Ann. Rept., pi. iii, 
p. xlviii. 1890. 
Cretaceous. Texas. Included in Black Prairie series. 
Lower Cross Timber division, Taff. Texas Geol. Surv., 2d Ajin. Rept., p. 734. 1891. 
Cretaceous. Texas. Included in Upper Cretaceous. Exact syn. Dakota division. 
Lower Cross Timber beds, Hill. Artesian invest., Final Kept, to Secy. Agric, pt. iii, 
p. 70, 52d Cong., 1st sess.. Ex. Doc. 41, pt. iii. 1892. 
Cretaceous. Texas and Southwest. Exact syn. Dakota sands. 
liO'wer Green sandstone group, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, 
pt. i, p. 1669. 1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono formation. Exact 
syn. No. xa. 
liO'vg^ville limestone, Clarke and Scbuchert. Science, new ser., vol. x, pp. 876-877. 
1899. 
Silurian. New York. Included in Mohawkian. 
liUdlowville shales, Hall. Geol. Surv. of N. Y., 3d Ann. Kept., p. 298. 1839. 

Devonian. New York. 
Ludlowville group. Hall. Am. Jour. Sci., 1st ser., vol. xlii, p. 57. 1842. 

New York. Includes Marcellus, Skaneateles, Ludlowville and Moscow shales. 
Ludlowville shaliBS, Hall. Geol. of N. Y., pt. iv, pp. 18, 187. 1843. 

Paleozoic. New York. Included in Hamilton group. 
liufkin or Angelina County deposits, Kennedy. Texas Geol. Surv., 3d Ann. Rept., 
pp. 58-60. 1892. 
Tertiary. Texas. Included in Miocene. 
Ijyxiiaxi group, Hitchcock. Am. Jour. Sci., 3d ser., vol. vii, p. 473. 1874. 

New Hampshire. 
Lyman group, Huntington. Geol. of N. H., pt. ii, pp. 50, 277-279, 293-311, 356. 
1877. 
Eozoic. New Hampshire. Included in Huronian. 
Lyncli Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 375. 1893. 

Carboniferous. Texas. Included in Strawn division. 
McAlester shale, Taff. U. S. Geol. Surv , 19th Ann. Rept., pt. iii, p. 437. 1899. 

Carboniferous. Indian Territory. Included in Coal Measures. 
McAlester shale, Taff and Adams. U. S. Geol. Surv., 21st Ann. Rept., pt. ii, p. 275. 
1900. 
Carboniferous. Indian Territory. 
McCartliy Creek shale, Rohn. U. S. Geol. Surv., 21st Ann. Rept, pt. ii, p. 426. 

1900. Alaska. 
McCIoud formation. Smith. Jour, of Geol., vol. ii, pp. 593-601. 1894. 

Carboniferous. California. Includes Baird shale and McCloud limestone. 
McCloud River limestone. Smith. Geol. Soc. Am., Bull., vol. v, p. 247. 1894. 

Upper Carboniferous. California. Included in Coal Measures(?). 
McCoytown sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 807. 

1892. Silurian Pennsylvania. Included in No. v. 
McCum limestone, Keyes. Iowa Acad. Sci., Proc, vol. v, p. 61. 1898. 

Ordovician. Iowa. 
McElmo formation. Cross. U. S. Geol. Surv., Geol. Atlas of U, S., Folio No. 57. 
1899. 
Juratrias. Colorado. Included in Gunnison formation. 
McElmo formation. Cross and Spencer. U. S. Geol. Surv., 2l8t Ann. Rept., pt. ii, 
p. 76. 1900. 
Juratrias. Colorado. 
Hachuca formation, Hayes. Geol. Soc. Am., Bull., vol. x, pp. 285,313. 1899. 
Tertiary. Nicaragua. Included in 01igocene(?). 



248 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BULtlffl. 



group, Caril. 2d Pa, Geol. Surv., Kept. P, pp. 76-78. 1890. 
Devonian. Pennsylvania. 
Mackinac limestone, Douglass. Mich. Legis., Doc., vol. i, no. ii, (4th Ann. Rept 
State Geol., for 1840), p. 548. 1841. 
Michigan. 
Mackaburgs sandstone, Lovejoy. Ohio Geol. Surv., vol. vi, pp. 628,635. 1888. 

Carboniferous. Ohio. 
Maclurea limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. 
Maclurea limestone, Spencer. Ga. Geol. Surv., Ist Rept. of Prog., pp. 100-111. 1891. 

Silurian. Georgia. 
Maclurea limestone, Spencer. Ga. Geol. Surv., The Paleozoic group. 1893. 

Ordovician. Georgia. Exact syn. Chickamauga. 
Macon City shale, Wheeler. Mo. Geol. Surv., Sheet Rept. No. ii, p. 60. 1893. 

Upper Carboniferous. Missouri. Included in Lower Coal Measures. 
Macon City shale, Wheeler. Mo. Geol. Surv., vol. ix, Sheet Rept. No. ii, p. 60. 1896. 

Carboniferous. Missouri. Included in Coal Measures. 
McPlierson Equus beds, Ha worth and Beede. Kan. Univ. Geol. Surv., vol. ii, pp. 
285-296. 1897. 
Pleistocene. Kansas. 
McPherson Equus beds, Beede. Kan. Acad. Sci., Trans., vol. xv, pp. 104-111. 1898. 

Pliocene (?). Kansas. 
Madison rocks, Borden. Indiana Geol. Surv., 5th Ann. Rept., for 1873, p. 139. 
1874. 
Indiana. 
Madison sandstone, Irving. Am, Jour. Sci., 3d ser., vol. ix, p. 442. 1875. 
Silurian. Wisconsin. Included in Canadian. Exact syn. Jordan sandstone. 
Part. syn. Lower Magnesian limestone (on Mississippi bluffs). 
Madison sandstone, Chamberlin. Geol. of Wis., vol. ii, p. 260. 1877. 

Lower Silurian. Wisconsin. Included in Potsdam. 
Madison sandstone, Irving. Geol. of Wis., vol. ii, pp. 525, 577, 584, 590, 591, 592, 
602, 603. 1877. 
Lower Silurian. Wisconsin. 
Madison sandstone, Chamberlin. Geol. of Wis., vol. i, p. 122. 1883. 

Cambrian. Wisconsin. Included in Potsdam. 
Madison sandstone, Walcott. U. S. Geol. Surv., Bull., No. 81, pp. 245, 331. 1891. 

Cambrian. Wisconsin. Included in Potsdam. 
Madison sandstone, Keyes. Iowa Geol. Surv., vol. i, p. 23. 1893. 

Cambrian. Iowa. Included in Potsdam sandstone. Exact syn. Jordan sandstone. 
Madison, Peale. U. S. Geol. Surv., Bull., No. 110, p. 33. 1893. 

Carboniferous. Montana. 
Madison limestone, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 1. 1894. 
Carboniferous. Montana. 
Madison sandstone, Hall and Sardeson. Geol. Soc. Am., Bull., vol. vi, pp. 167,175. 
1895. 
Cambrian (?). Wisconsin. Included in Jordan sandstone. 
Madison, Peale. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 
Carboniferous. Montana. 

Tadison limestone, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 1896. 
Carboniferous. Wyoming. 

iison. Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 39. 1896. 
irboniferous. Montana. 



WEKK8.] m'kEAN MAGNE8IAN. 249 

Madison beds, Foerete. Indiana Dept. Geol. and Nat. Resources, 21st Ann. Kept., 

1896, pp. 218, 220. 1897. 
Liow^er Silurian. Indiana. 

Madison formation. Weed. U.S. Geol. Surv., 18th Ann. Rept., pt. iii, p. 469. 1898. 

Carboniferous. Montana. 

Madison limestone, Hague. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 52. 1899. 

Carboniferous. Wyoming. 

Madison limestone, Iddings and Weed. U. S. Geol. Surv., Mon., vol. xxxii, pt. ii, 

pp. 1-59, 149-164. 1899. 

Carboniferous. Yellowstone Park. 

Madison limestone. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folios No. 55. 

56. 1899. 

Carboniferous. Montana. 

Madison beds, Foerste. Indiana Dept. Geol. and Nat. Res., 24th Ann. Rept., pp. 

47-57, 63-66. 1900. 

Silurian. Indiana. Included in Middle Silurian. 
Madison group. Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, pp. 289-293. 1900. 
Carboniferous. Montana. Includes Paine shale, Woodhurst limestone, and Castle 
limestone. 
Madisonville limestone, Norwood. Ky. Geol. Surv., new ser., vol. iv, p. 319. 1878. 
Carboniferous. Kentucky. Included in Coal Measures. Exact syn. South Caro- 
- lina limestone(?). 
Ma^nesian slate, Emmons. Agric. of N. Y., vol. i, pp. 75-78. 1846. 

New York, New England. Included in Taconic system. 
Magnesian, Upper and Lower. Am. Jour. Sci., 2d ser., vol. x, p. 5. 1850. 

Wisconsin and Iowa. 
Magnesian limestone. Lower, Foster and Whitney. Am. Jour. Sci., 2d ser., vol. xi, 
p. 233. 1851. 
Michigan. 
Magnesian limestone, Lower, Daniels. Wis. Geol. Surv., Rept., 1853, p. 17. 1854. 

Silurian. Wisconsin. 
Magnesian, Upper, Percival. Wis. Geol. Surv., Rept., 1854. p. 12. 1855. Wis. 
Geol. Surv., Rept., 1856, pp. 25, 72-77. 
Silurian. Wisconsin. 
Mi^nesian, Lower, Percival. Wis. Geol. Surv., Rept., 1854, p. 18. 1855. Rept., 
1856, pp. 26, 86-92. 
Silurian. Wisconsin. 
Magnesian limestone, Second, Meek. Mo. Geol. Surv., 1st and 2d Ann. Repts., 
pt. ii, p. 106. 1855. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone. First, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., 
p. 115. 1855. 
Silurian. Missouri. Includeti in Lower Silurian. 
Magnesian limestone. Second, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., 
pp. 121, 197. 1855. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone, Third, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., 
p. 126. 1855. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone. Fourth, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., 
p. 129. 1855. 
Silurian. Missouri. Included in Lower Silurian. 



250 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [«dll.mI. 

Magneeian Umeaton«, Firul, Shuman). Mo. Geol. Surv., 1st and 2(1 Auu. Repta, 
pt. ii, pp. 159. 174. 1855. 
Silurian. Mieeouri. Included in Lower Silurian. 
Magnesian limestone. Second, Shuntard. Mo. Geol. Surv., latand 2(1 Ann. Kepts., 
pt. ii, p. 162. 1855. 
Silurian. Miesouri. Included in Lower Silurian. 
Magnesian limestone and shale group, SaSord, Geol. Recunu. of the State of Tenii., 
Ist Rept., pp. 153-154. 1K56. 
Tennessee. Includes Limestone membera, shale member, and sandstone memUr. 
Magneeian limestone (Lower), Whitney. Iowa Geol. Surv., vol. i, p. 332. 1868. 

Silurian. Iowa. 
Magneeian limestone, Wortlien. Iowa Geol. Surv., vol. i, p. 192. 1858. 

Carboniferous. Iowa. 
Magnesian limestone, Lower, Hall and Whitney. Am. Jour. Sa., 2d ser., vol. ixvil, 
p. 107. 1859. 
Silurian. Iowa. 
Mi^neeian limestone (Lower), Whitney. Rept. on Upper Mississippi lead regicm, 
p. 144. 1862. 
Silurian. Wisconsin. 
Magnesian limestone, Lower, Worthen. III. Geol. Surv., vol. i, pp. 151-152. 1866. 

Silurian. Illinois. 
M^nesian limestone, I-ower, Whitney. HI. Geol. Surv., vol. i, pp. KKHW. 1866. 

Silurian. Illinois. Exact syn. Calciferous. 
Magnesian limestone. Cook. Geol. of N. J., pp. 90-130. 1868. 

Cambrian (?). New Jersey. Exact syns. Blue limestone, Calciferous sandstoue. 
Magnesian limestone. Lower, White. Iowa Geol. Surv., vol. i, pp. 172-174. 1870. 

Silurian. Iowa. Included in Primordial group of Lower Silurian. 
Magnesian limestone, I..ower, Winchell. Minn. Geol. and Nat. Hist. Surv., Ist Ann. 
Rept., pp. 81-88. 1873. 
LowerSilurian. Min neaota. 
Magnesian limestone. First, Meek. Mo. Geol. Surv., Rept., 1855-1871, p. 141. 1873. 

Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone. Second. Meek. Mo. Geol. Surv., Rept., 1856-1871, pp. 118, 143. 
1873. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone. Third, Meek. Mo. Geol. Surv., Rept., 1865-1871, pp. 123, llS. 
1873. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian limestone, Fourth, Meek. Mo. Geol. Surv., Rept, 1865-1871, pp. 12T, 
148. 1873. 
Silurian. Missouri. Included in Lower Silurian. 
Magnesian hmestone, First, Broadhead. Mo. Geol. Surv., Rept., 1855-1871, p. 53. 
1873. 
Silorian. Missouri. Included in Lower Silurian and Calciferous sand rock. 
M^^esian limestone. Second, Broadhead. Mo. Geol. Surv., Rept, 1856-1871, pji. I0| 

Included in Lower Silurian and Calciferous sand rock. 
Third, Broadhead. Mo. Geol. Surv.. Rept., 1865-1871, pp. 15, 

Included in Lower Silurian and Calciferous sand rock. 
First, Shumard. Mo. Geol. Surv., Rept, 1855-1871, pp.W, 
1873. 

Included iu Lower Silurian and Calciferous gaud rock. 



WEUM.] MAGNESI AN. 251 

Msignesian limestone, Second, Shumard. Mo. Geol. Surv., Rept., 1855-1871, pp. 192, 
207, 215, 226, 235, 246, 269, 285, 298, 308. 1873. 
Silurian. Missouri. Included in Lower Silurian and Calciferous sand rock. 
Magnesian limestone. Third, Shumard. Mo. Geol. Surv., Rept., 1855-1871, pp. 195, 
217, 226, 237, 247, 269, 284, 299, 309. 1873. 
Silurian. Missouri. Included in Lower Silurian and Calciferous sand rock. 
Magnesian limestone. First, Broadhead. Mo. Geol. Surv. Rept., 1873-74, p. 229. 
1874. 
Silurian. Missouri. Included in Magnesian limestone series and Calciferous sand 
rock. 
Magnesian limestone. Second, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 30, 
325. 1874. 
Silurian. Missouri. Included in Magnesian limestone series and Calciferous sand 
rock. 
Magnesian limestone. Third, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 30, 
328, 359. 1874. 
Silurian. Missouri. Included in Magnesian limestone series and Potsdam. 
Magnesian limestone. Fourth, Broadhead. Mo. Geol. Surv.> Rept, 1873-74, p. 31. 
1874. 
Silurian. Missouri. Included in Magnesian limestone series and Potsdam. 
Magnesian limestone series, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 29, 64. 
1874. 
Silurian. Missouri. Included in Calciferous sand rock and Potsdam. Includes 
First limestone. First sandstone, Second limestone, Second sandstone. Third 
limestone. Third sandstone. Fourth limestone. 
Magnesian limestone. Lower, Harrington. Minn. Geol. and Nat. Hist. Surv., 4th 
Ann. Rept., p. 86. 1876. . 
Lower Silurian. Minnesota. 
Magnesian, Lower, Irving. Geol. of Wis., vol. ii, p. 547, 586-587, 591, 592. 603, 604. 
1877. 
Lower Silurian. Wisconsin. Exact syn. Calciferous sand rock of New York. 
Magnesian limestone. Lower, Chamberlin. Geol. of Wis., vol. ii, pp. 268-285. 1877. 

Lower Silurian. Wisconsin. 
Magnesian limestone. Prime. Am. Jour. Sci., 3d ser., vol. xv, pp. 262-266. 1878. 

Silurian. Pennsylvania. Exact syn. Auroral limestone of Rogers. 
Magnesian limestone. Lower, Strong. Geol. of Wis., vol. iii, p. 397. 1880. 

Wisconsin. 
Magnesian limestone. Lower, Miller. Cin. Roc. Nat. Hist., Jour., vol. iv. No. iv, 

p. 269. 1881. 
Magnesian limestone. Lower, Wooster. Geol. of Wis., vol. iv, pp. 123-129. 1882. 

Wisconsin. 
Magnesian limestone. Lower, Strong. Geol. of Wis., vol. iv, pp. 64-81. 1882. 

Wisconsin. 
Magnesian limestone. Lower, Chamberlin. Geol. of Wis., vol. i, pp. 138-143. 1883. 
Cambrian. Wisconsin. Included in Potsdam period. Part. syn. Calciferous of 
New York. 
Magnesian limestone. Lower, Winchell. Minn. Geol. and Nat. Hist. Surv., Final 
Rept., vol. ii, pp. 12, 36, 72, 382. 1888. 
Cambrian. Minnesota. 
Magnesian limestone. Lower, Uphani. Minn. Geol. and Nat. Hist. Surv., Final 
Rept, vol. ii, pp. 124, 162. 1888. 
Minnesota. 
Magnesian limestone. First, Ladd. Mo. Geol. Surv., Bull. No. 3, pp. 14, 15. 1890. 
Lower Silurian. Missouri. 



252 NORTH AMERICAN GEOLOGIC FORMATION NAMES, [bdll.191. 

Magni'Hian Hmestouef S€HH)n<l, I^d. Mf». (leol. Siirv., Bull. No. 3, pp. 14, 15. 1890. 

Cambrian (?). Minsouri. 
Magneman HmeHtone, Simondsand Hopkins. Ark. (leol. Surv., 1891, vol. ii, pp.27- 
29. 1891. 

Silurian. Arkansas. 
Magneeian limestone, Third, Broadhead. Am. Geol., vol. xi, p. 265. 1893. 

Cambrian. Mifi8ouri. 
Magnesian limestone, Thini, Broadhead. Am. Geol., vol. xii, p. 76. 1893. 

Cambrian. Missouri. 
Magnesian limestone. Fourth, Broadhead. Am. Geol., vol. xii, d. 76. 1893. 

Cambrian. Missouri. 
Magnesian series, Nason. Am. Get>l., vol. xi, p. 91. 1893. 

Missouri, Arkansas. 
Magnesian limestone, First, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 38. 1894. 

Lower Silurian. Missouri. Included in Calciferous stage. 
Magnesian limestone, Keyes. Mo. (ieol. Surv., vol. iv, p. 30. 1894. 

Cambrian. Missouri. Included in Ozark series. 
Magnesian limestone, Lower, Hershey. Am. Geol., vol. xiv, p. 171. 1894. 

Cambrian. Illinois. 
Magnesian limestone. First, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 61-65. 1898. 

Silurian. Missouri. Included in Ozark series. Part syn. Sacchoroidal sandstoDe. 
Magnesian sandstone, Second, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 53-57. 

1898. 
Silurian. Missouri. Included in Ozark series. 
Magnesian sandstone, Third, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 50-51. 1898. 

Silurian. Missouri. Included in Ozark series. 
Magnesian limestone, Lower, Buckley. Wis. Geol. and Nat. Hist. Surv., Bull. 4, 
Econ. ser., No. 2, pp. 255-269. 1898. 

Wisconsin. 
Magnesian limestone, Lower, Salisbury and Atwood. Wis. Greol. and Nat Hist 
Surv., Bull. No. 5, Fa\. ser.. No. i, p. 31. 1900. 

Wisconsin. 
Ma^thy formation, I)art<m. Am. Jour. Set, 3d ser., vol. xlv, pp. 407-419. 1893. 

Cretaceous. Maryland. 
Magothy, Darton. U. S. Geol. Surv., Bull. No. 138, p. 125. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Mahoning: sandstone, Lesley. Manual of Coal, pp. 94, 97-98. 1856. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Mahoning sandstone, Rogers. Geol. of Pa., vol. ii, p. 477. 1858. 
Mahoning sandstone, Lesquereux. Am. Jour. Set, 2d ser., vol. xxx, p. 368. 1860. 

Carboniferous.*^ Central States. Included in Coal Measures. 
Mahoning sandstone, I^esley. Am. Jour. Sci., 2d ser., vol. xxxii, p. 285. 1861. 

Carboniferous. Pennsvlvania. Included in Coal Measures. 
Mahoning sandstone, Lesc|uereux. III. Geol. Surv., vol. i, p. 215. 1866. 

Carboniferous. Illinois. Included in Coal Measures. Exact syn. Mahoning 
sandstone of Pennsylvania (?). 
Mahoning sandstone, Stevenson. Am. Phil. Soc., Trans., vol. xv, pp. 27-29. 1873. 

Carboniferous. West Virginia. Included in Alleghany River series. 
Mahoning sand-stone, Fontaine. Am. Jour. Set, 3d ser., vol. vii, p. 461. 1874. 
'^Tboniferous. West Virginia, Included in Lower Barren Measores. 
ning sandstone, Newberry. Ohio Geol. Surv., vol. ii, p. 149. 1874. 
loniferous. Ohio. Included in Lower Coal Measures. 
ing aandstone, Crandalt Ky. Geo.. Surv., vol. ii, new ser., pp. 3-76. 1877. 
imiferous. Kentucky. Included in Coal Measures. 



WEEKS.] MAGNE8IAN MANA8QUAN. 253 

Mahoning sandstone, Newberry. Ohio Geol. Surv., vol. iii, p. 71. 1878. 

Carboniferous. Ohio. Included in Coal Measures. 
Mahoning sandstone, Piatt. 2d Pa. Geol. Surv., Rept. H*, p. 312. 1878. 

Carboniferous. Pennsylvania. 
Mahoning, Piatt. 2d Pa. Geol. Surv., Rept. H*, pp. 312-313. 1880. 

Carboniferous. Pennsylvania. 
Mahonii^ mndstone, Ashbumer. 2d Pa. Geol. Surv., Rept. R*, p. 394. 1885. 

CarbonHierous. Pennsylvania. 

Mahoning sandstone, White. 2d Pa. Geol. Surv., Rept. T», pp. 49-^50. 1885. 

Carboniferous. Pennsylvania. 
Mahoning sandstone, Lovejoy-Ellis. Ohio Geol. Surv., vol. vi, p. 631. 1888. 

Carboniferous. Ohio. 
Mahoning coal, White. U. S. Geol. Surv., Bull. No. 65, p. 96. 1891. 

Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Barren Meas- 
ures, Elk River series. Exact syn. Brush Creek. 
Mahoning limestone. White. U. S. Geol. Surv., Bull. No. 65, p. 96. 1891. 

Carboniferous. Pennsylvania. Included in Barren Measures, Elk River series. 
Exact syn. Summit limestone. 
Mahoning sandstone. White. U. S. Greol. Surv., Bull. No. 65, p. 95. 1891. 

Carboniferous. Pennsylvania, West Virginia. Included in Barren Measures, Elk 
River series. Includes Upper and Lower Mahoning. 
Mahoning sandstone, Lower, White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Upper Carboniferous. West Virginia. Included in Elk River series. 
Mahoning sandstone. Upper, White. Greol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Upper Carboniferous. West Virginia. " Included in Elk River series. 
Mahoning sandstone, Gallaher. Mo. Geol. Surv., Bien. Rept., p. 39. 1898. 

Upper Carboniferous. Missouri. Included in Lower Coal Measures. 
Xain street. Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Indian Territory. Included in Denison beds, Washita division. 
Xalade Valley group, Peale. U. S. Geol. Surv. of Terr., 11th Ann. Rept., p. 641. 
1879. 

Pleistocene. Utah. Included in Quaternary. 
Halone bed, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 721-722. 1891. 

Cretaceous. Texas. Included in Washita division. 
Malone formation, Stanton. Jour, of Geol., vol. v, pp. 817-819. 1897. 

Jurassic. Texas, 
tfammotli limestone. Smith. U. 8. Geol. Surv., Geol. Atlas of U.S., Folio No. 65. 
1900. 

Carboniferous. Utah. 
Hanasquan marl, Clark. N. J. State Geol., Ann. Rept. for 1892, pp. 205-208. 1893. 

Cretaceous. New Jersey. 
Manasquan formation, Clark. Jour, of Geol., vol. ii, p. 166. 1894. 

Cretaceous. New Jersey. Part. syn. Upper Marl bed. 
Manasquan, Clark. N. J. Geol. Surv. , Rept. 1893, p. 338. 1894. 

Cretaceous. New Jersey. Part. syn. Upper Marl bed. 
Manasquan formation, Clark. Geol. Soc. Am., Bull., vol. vi, pp. 479, 481. 1895. 

Cretaceous. New Jersey. Includes Upper Marl bed. 
Manasquan formation, Shattuck. Johns Hopkins Univ. Circ, vol. xv, p. 15. 1895. 

Cretaceous. New Jersey. Part. syn. Lower portion of Upper Marl bed. 
Manasquan, Darton. U. S. Geol. Surv., Bull. No. 138, p. 41. 1896. 

Cretaceous. New Jersey. Exact syn. Upper Marl in part. 
Manasquan formation, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, 
pp. 316, 339. 1897. 

Cretaceous. New Jersey. Include<l iu Upixjr Cretaceous. 



254 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Manasquan formation, Clark, Bagg and Shattuck. N. J. Geol. Surv.,Rept., 1897, 
pp. 190-191. 1898. 
Cretaceous. New Jersey. Included in Upper Cretaceous. 
Manatee Biver marl, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 125. 1892. 

Tertiary. Florida. Included in Miocene. 
Manayunk mica schists, Hall. 2d Pa. Geol. Surv., Rept. C, pp. 27-28. 1881. 

Pennsylvania. 
Manayunk subdivision, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, pp. 122-123. 
1892. 
Archean. Pennsylvania. 
Manayunk gneisses and schists, Rand. Phil. Acad. Nat. Sci., Proc., 1900, pp. 279-283. . 
1900. 
Pennsylvania. 
Manchionell, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 86. 
1899. 
Tertiary. Jamaica. Included in Coastal series. Pliocene. 
Mancos shale. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Geol. Atlas of U. S., 
Folio No. 57. 1899. 
Cretaceous. Colorado. 
Manhattan group, Stevens. Lyceum of Nat Hist, of N. Y., Annals, vol. viii, 
pp. 108-120. 1867; 
New York. Exact syn. Taconic. 
Manhattan, Prosser. Geol. Soc. Am., Bull., vol. ,vi>^pp» 29, 37, 40. 1894. 

Permian. Kansas. Exact syn. Cottonwood. 
Manhattan schist, Merrill. N. Y. State Mus., 50th Ann. Rept., vol. i, p. 287. 1898. 

Silurian. New York. Included in Ordovician. 
Mcmitoban, Tyrrell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 144E-199E. 1893. 

Devonian. Canada. Included in Upper Devonian. 
Manitonnuck group. Bell. Can. Geol. Surv., Rept. 1877-78, pp. 11C-19C. 1879. 

Canada. 
Mtmitou limestone. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 
1894. 
Silurian. Colorado. 
Manitou limestone, Crosby. Essex Inst., Bull., vol. xxvii, p. 114. 1895. 

Ordovician. Colorado. 
Manitou limestone, Crosby. Geol. Soc. Am., Bull., vol. x, p. 143. 1899. 

Ordovician. Colorado. 
Manitou series, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iv, 
pp. 307, 519. 1899. 
Cambrian. Minnesota. Included in Animikie. 
Manlius water-lime group, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., p. 376. 
1840. 
Silurian. New York. 
Manlius water-lime group, Emmons. Agric. of New York, vol. i, pp. 159-166. 1846. 
New York. Included in Onondaga salt group of Helderberg division of New York 
system. 
Manlius limestone, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 
1899. 
Silurian. New York. Included in Cayugan. 
Manlius limestone, Grabau. Geol. Soc. Am., Bull., vol. xi, pp. 350-351. 1900. 

Silurian. New York. Included in Upper Silurian. 
Manlius limestone, Weller.' N. J. Geol. Surv., Rept. 1899, p. 24. 1900. 
Devonian. New Jersey. 



WEEKS.] MANA8QUAN ^MAQUOKETA. 255 

Mansfield group, Hilgard. Am. Jour. 8ci., 2d Ber., vol. xlviii, p. 340. 1869. 

Tertiary. Louisiana. 
Mansfield group, Hopkins, La. State Univ., Rept. for 1869, p. 83. 1870. 

Eocene. 
Mansfield series, Johnson. Iron regions of northern Louisiana and eastern Texas, 
50th Cong., Istsess., House Rep., Ex., p. 16. 1888. 

Eocene. Louisiana. Part. syn. Claiborne. 
Mansfield sandstone, Hopkins. Indiana Dept. Geol. and Nat. Res., 20th Ann. Rept., 
1875, pp. 186, 195, 196, 199. 1896. 

Carboniferous. Indiana. 
Mansfield sandstone, Bfatchley. Indiana Dept. Geol. and Nat. Res., 2l8t Ann. Rept., 

1896, p. 15. 1897. 

Mansfield Sandstone, Newsom. Indiana Acad. Sci., Proc., 1897, p. 252. 1898. 

Indiana. 
Mansfield sandstone, Blatchley and Ashley. Indiana Dept. Geol. and Nat. Res., 
22d Ann. Rept., 1897, pp. 16, 21. 1898. 

Carboniferous. Indiana. 
Mansfield sandstone, Kindle. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 

1897, p. 408. 1898. 
Carboniferous. Indiana. 

Mansfield sandstone, Ashley. Indiana Dept. Geol. and Nat. Res., 23d Ann. Rept., 

1898, pp. 94, 89, 93, 95, 141, 180, 925. 1899. 
Carboniferous. Indiana. 

Mansfield schists, Smyth. U. S. Geol. Surv., Mon., vol. xxxvi, pp. 411-415, 437-440. 

1899. 

Michigan. 

Mansfield formation. Van Hise. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 16. 

1899. 
Algonkian. Michigan. Included in Lower Huronian. 

Mansfield slate, Clements. U. S. Geol. Surv., Mon., vol. xxxvi, pp. 54-73. 1899. 

Michigan. Included in Lower Huronian series. 
Mansfield formation, Clements and Smyth. U. S. Geol. Surv., 19th Ann. Rept, 
pt. iii, pp. 36-40, 131. 1899. 

Algonkian. Michigan. Included in Lower Huronian. 
tfanti beds, Scott. Geol. Soc. Am., Bull., vol. ix, p. 404. 1898. 

Tertiary. Utah. Exact syn. Green River. 
Manti formation. Smith. Jour, of Geol., vol. viii, p. 455. 1900. 

Tertiary. Western North America. Included in Eocene. 
tfanzanilla beds, Guppy. London Geol. Soc, Quart. Jour., vol. xxii, pp. 572-573. 
1866. 

Tertiary. Trinidad. Included in Lower Miocene. 
Manzanilla beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 344. 1898. 

Tertiary. Island of Trinidad. Included in Claibornian stage, Eocene. Exact 
syn. Gatun beds, Arago beds. 
llaple Mill shale. Bain. Am. Geol., vol. xv, p. 322. 1895. 

Carboniferous. Iowa. Included in Mississippian series. Kinderhook. 
Maple Mill shale. Bain. Iowa Geol. Surv., vol. v, pp. 134-135. 1896. 

Carboniferous. Iowa. Included in Kinderhook. 
Mapleton sandstone, Gregory. U. S. Geol. Surv., Bull. No. 165, p. 136. 1900. 

Maine. 
Maquoketa shale. White. Iowa Geol. Surv., vol. i, pp. 180-182. 1870. 

Silurian. Iowa. Included in Cincinnati group. Exact syn. Hudson River shales. 
Maquoketa shales, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 
p. 300. 1884. 



256 NORTH AMERICAN GEOLOGIC FORMATION NAMES. |Bri.i.i»i. 

Ma(|uokela Hhal«, Walcatt. Geol. S<h-. Am., Bull., vol. i, p. 343. 1S89. 

SiliiTian. Tennexsce. Inrludeil in HuilMin River. 
Maijuiiketft nhale, Jarnes. Am. Amue. Adv. 8ci., Frcx;., vol. xxxviii, p. 250. 18S9, 

Silurian. Iowa. 
Maqiioketa, James. Am. Geol., vol. v., p. 335. 1890. 

Hilurian. Ohio and MiBBJesippi valleys. Included in Cincinnati. 
Maquokela nhaltv. James. Oin. (kx. Nat Hist, Jour., vol. xiil. No. i, p. 2. 1S90. 

Ordovician. 
Maquoketa ehale, MHiee, (I. S. Geol. Hurv., 11th Ann. Rept., pt i, p. 326. 1891. 

Kilurian. Iowa. 
Maquoketa beds, Hall and Sanleaon. Geol. Soc. Am., Bull.,vol. iii, pp. 332, 365. 1892. 

I»wer Silurian, Minnesota. Included in Cincinnati group. 
Maquoketa shale»<, Keye«. Iowa Geol. Siirv., vol. i, pp. 2B-29. 1893. 

tellurian. Iowa. 
Maquokela ehale, Norton. Iowa (Jeol. Surv., vol. iil, pp. 177-178. 1895, 

Silurian. Iowa. 
Maquokela, Sardeeon. Am. Geol., vol. xviii, pp. 356-368. 1896. 

Siluriau. Mimiesippi Valley. Part syn. Treaton. 
Maquoketa Heries, Sardewn. A(n. Geol., vol, six, pp. 21-36, 330-336. 18B7. 

Silurian. MisBixsippi Valley. Included iu Lower Silurian. Includes Wyckofl, 
Maquoketa, and Trannition formations. 
Maquoketa ehalep, Calvin. Iowa Geol. Surv., vol. viii, pp. 140-144. 1898. 

Silurian. Iowa. Included in Ordovician. 
Maquokela shale, Calvin and Bain. Iowa Geol. Surv., vol x, p. 431, 1900. 

Silurian. Iowa. Included in Oirlovician. 
Horais dea Cj^nea coal series. Swallow. Kan. Geol. Surv., Prelim. Kept., pp. 22- 
24. 1866. 

Carbon if eioiiH. Kansas. 
Marais des Cygnes Hhalea, Keyes. Iowa Acad. Sci., Proc., vol. vii, p. 84. 1900, 

Carbon KerouH. Mississippi Valley. Included in Coal Measures. 
Marltle beds, Broadhead, Mo. Geol. Surv., Kept,, 1873-74, p. 355. 1874. 

Silurian, Misnouri. Included in Primordial Polsdam. 
Marble Oanon limestone, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 26B, 
S. 

itish Columbia. Included in Cache Creek beds. 
stratum, Borden. Indiana Geol. Surv., 5th Ann. Rept, 1873, 



)erste. Indiana Dept Geol. and Nat. Ree., 21st Ann. Kept, 

•19. 1897. 

ndiana. 

all. N. Y. Geol. Surv., 3d Ann. Rept, pp. 295-296. 1839. 

, N. Y. Geol. Surv., 4th Ann. Rept, pp. 420-121. 1840. 

. Am. Jour. Sd., 1st aer., vol. slii, p. 57. 1842. 

led \n Ludlowville group. 

uxem. Geol. of New York, pt iii, pp. 146-150. 1842. 

ork. Included in New York system, Kxact syn. Pyritiferom 

aywacke) of Eaton, 

. (ieol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 177-179. ^Ml 

'ork. Included in New York system. Includes PyritilenMB 

Mid Black shale. 



WEEKS.] MAQUOKETA MARIETTA. 257 

Marcellus slate, Emmons. Agric. of N. Y., vol. i, pp. 181-183. 1846. 

New York. Included in Erie division of New York system. 
Marcellus shales, Loomis. Am. Jour. Sci., 2d ser., vol. i, p. 223. 1846. 

Devonian. Tennessee. 
Marcellus, Emmons. Agric. of N. Y., vol. i, pp. 181-183. 1846. 

Devonian. New York. Included in P>ie division of New York svstem. 

« 

Marcellus shale, Owen. Am. Jour Sci., 2d ser., vol. iii, p. 57. 1847. 
Devonian. New York. Included in Erie division of New York system. Part 
syn. Lower part of Formation, No. viii, Pennsylvania Survey. 
Marcellus shale, Cook. Geol. of New Jersey, p. 167. 1868. 

Devonian. New Jersey. 
Marcellus shale, Hunt. Am. Jour. Sci., 2d ser., vol. xlvi^j)p. 357-362. 1868. 

Devonian. Canada. Included in Hamilton shale. 
Marcellus, Ashburner. Am. Phil. Soc, Proc, vol. xvi, pp. 528, 532. 1877. 

Devonian. Appalachian region. Exact syn. Cadent, Lower. 
Marcellus shale, Whitfield. Am. Assoc. Adv. Sci., Proc., vol. xxviii, pp. 297-299. 
1880. 
Devonian. Ohio. 
Marcellus, Piatt. 2d Pa. Geol. Surv., Kept. T, pp. 32-34. 1881. 

Devonian. Pennsylvania. 
Marcellus shale, Whitfield. N. Y. Acad. Sci., Annals, vol. ii, p. 233. 1882. 

Devonian. Ohio. Part. syn. Hamilton of New York. 
Marcellus shale, Williams. Am. Assoc. Adv. Sci., Proc, vol. xxx, pp. 186-191. 
1882. 
Devonian. New York. 
Marcellus shale. White. 2d Pa. Geol. Surv., Kept. G«, pp. 112-116. 1882. 
Carboniferous. Pennsylvania. Included in Hamilton of No. viii. Exact syn. 
Lower Hamilton. 
Marcellus, Claypole. 2d Pa. Geol. Surv., Rept. F^ pp. 64-65. 1885. 

Devonian. Pennsylvania. 
Marcellus, White. 2d Pa. Geol. Surv., Rept. T^, pp. 113-116. 1885. 

Devonian. Pennsylvania. 
Marcellus shale, Prosser. Roch. Acad. Sci., Proc, vol. ii, pp. 50-124. 1892. 

Devonian. New York. 
Marcellus shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1194-1236. 
1892. 
Devonian. Pennsylvania. Exact syn. No. viiil) of Pennsylvania Survey. 
Marcellus, Prosser. Geol. Soc Am., Bull., vol. iv, pp. 95, 108, 116. 1893. 

Devonian. New York. 
Marcellus shale, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Includid in Hamilton (Middle Devonian). 
Marcellus shale, Lincoln. N. Y. State Mus., 48tli Ann. Rept., pt. ii, pp. 92-93. 
1895. 
Devonian. New York. 
Marcellus shale, Lincoln. N. Y. State (ieol., 14tli Ann. Rept, pp. 92-98. 1895. 

Devonian. New York. 
Marcellus shale, Grabau. Buff. Soc. Nat. Hist., Bull., vol. vi, pp. 65-66. 1898. 

Devonian. New York. 
Mareniscan, Walcot^ Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Archean. Michigan. Exact syn. Coutchiching (?) of Ontario and Minnesota (?). 
Marietta sandstone, White. U. S. Geol. Surv., Bull. No. 65, p. 35. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Permo-Carbonif- 
erous, Dunkard Creek. 

Bull. 191—02 17 



258 NORTH AMKRICAN GEOLOGIC FORMATION NAMES. [bull.19I. 

Marietta, Hill. (Jeol. Soe. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Texas, Indian Territory. Included in Denison beds, Washita division. 
M&rlno l)e*l8, Kennedy. Phil. Acad. Nat. Rci., Proc., 1895, p. 108. 1895. 

Eocene. Texas. Included in Lower Claiborne. Part syn. Cooks Mountain 
series. 
Marion formation, Prosser. Jour, of Geo!., vol. iii, pp. 786-789. 1895. 

Permo-Carbonifen)Us. Kansas. 
Marion formation, Pnwser. Kan. Univ. Quart., vol. vi, pp. 157-158, 174. 1896. 

CarlMmiferous. Kansas. Included in Permian. 
Marion formation, Prosser. Kan. Univ. Geol. Surv., vol. ii, pp. 64-65. 1897. 

Carboniferous. Kansas. Included in Permian. Exact syn. Gueda Salt Measures. 
Marion limestone, Bee<le. Kan. Univ. Quart., vol. ix, p. 202. 1900. 

(^arl)oniferous. Kansas. 
Mariposa, Btnker. U. S. (ieol. Surv., Bull. No. 19, p. 18. 1885. 

California. Exact syn. Knoxville. 
Mariposa beds, Diller. (ft»ol. Soc. Am., Bull., vol. iv, p. 222. 1893. 

Jurassic. California. 
MaripoFa, Turner. U. S. Geol. Surv., (leol. Atlas of U. S., Folio No. 11. 1894. 

("retaceous. California. 
Mariposa, Turner. Am. (xeol., vol. xiii, p. 234. 1894. 

Juratrias. California. 
Maripof^a formation, Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 452. 1894. 

Juratrias or Oetaceous. California. 
Mariposa, Lindgren and Turner. U. S. Geol. Surv., (tcoI. Atlas of U. S., Folio No. 3. 
1894. 

Cretaceous. California. Included in Auriferous slate series. 
Mariposa, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 5, 29. 1894, 
1896. 

Cretaceous. California. Included In Auriferous slate series. 
Mariposa beds, Diller and Stanton. Geol. Soc. Am., Bull., vol. v, p. 457. 1894. 

Jurassic. California. 
Mariposa beds, Hyatt, (ieol. Soc. Am., Bull., vol. v, p. 406. 1894. 

Jurassic. California. 
Mariposa formation, Lindgren. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 88. 1896. 

Juratrias. California. 
Mariposa foniiation, Turner and Ransome. U. S. Geol. Surv., G^ol. Atlas of U. S., 
Folio No. 41. 1897. 

Juratrias. California. Included in Bed Rock series. 
MaripoFa formation, Ransome. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 63. 
1900. 

Juratrias. California. 
Mariposa formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 66. 
1900. 

Juratrias. California. Included in Bed Rock series. 
Marks Mills red beds, Harris. Am. Jour. Sci., 3d ser., vol. xlvii, p. 304. 1894. 

Tertiary. Included in Jackson stage of Eocene. 
Marks Mills beds, Dall. U. S. Geol. Surv., 18th Ann. Rept, pt. ii, p. 342. 1898. 

Tertiary. Arkansas. Included in Jacksonian stage, Ek)cene. 
Marl Ftratum, Rogers. 1st rept. on the Geol. of N. J., p. 29 et seq. 1836. 
Marl series, Newberry. Senate Ex. Doc, 36th Cong., 1st sess., Ives's Rept on 
Colorado River, p. 106. 1861. 

Cretaceous. New Mexico. 
Mari beds, Rogers. Geol. of N. J., pp. 261-266. 1868. 

Cretaceous, New Jersey. Includes lower marl bed, red sand, middle marl bed, 
yellow sand Ijed, and up{)er marl bed. 



WEEKS.] MARIETTA MARQUETTE. 259 

Marl period, terry. Boston Soc. Nat. Hist, Proc.,vol. xv, 1872-73, p. 139. 1872. 

Tertiary. New England. 
Marl bed, Lower, Clark. N. J. State Geol., Rept., 1892, pp. 191-199. 1893. 

Cretaceous. New Jersey. Includes Monmouth formation. 
Marl bed. Middle, Clark. N. J. State Geol., Rept., 1892, pp. 201-205. 1893. 
Cretaceous. New Jersey. Includes Rancocas formation. 
Marl bed, Upper, Clark. N. J. State Geol., Rept, 1892, pp. 205-210. 1893. 
Cretaceous and Tertiary. New Jersey. Includes Manasquan and Shark River 
formations. 
Marlborougrli, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 124-127. 1884. 

Tertiary. Maryland. Included in Eocene. 
Marl-Brook Columbus chalk marls. Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 84-86. 
1888. 
Cretaceous. Arkansas. Included in Chalky marl beds. 
Mannat on formation, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 92, 94. 1898. 
Carboniferous. Kansas. Included in Lower Coal Measures. Includes Upper 
Pleasanton shales, Altamont limestone. Lower Pleasanton shale. Pawnee lime- 
stone, Labette shale, and Oswego limestone. 
Maroon conglomerate, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 
1894. 
Carboniferous. Colorado. 
Maroon formation, Emmons. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 48. 
1898. 
Carboniferous. Colorado. 
Maroon formation, Spurr. U. S. Geol. Surv., Mon., vol. xxxi, pp. 33-37. 1898. 

Carboniferous. Colorado. 
Marquette series, Brooks. Mich. Geol. Surv., vol. i, pt i, p. 216. 1873. 

Michigan. 
Marquette, IrVing. U. S. Geol. Surv., 3d Ann. Rept., pp. 166-168. 1883. 
Archean. Michigan. Included in Huronian. Exact syn. Animikie, Penokee, and 
Menominee. 
Marquettian, Winchell. Minn. Geol. and Nat. Hist. Surv., 16th Ann. Rept., p. 365. 
1888. 
Minnesota. 
Marquette-Menominee schists. Van Hise. Int. Cong, of Geo)., 5th session, pi. xiv. 
1893. 
Algonkian. Lake Superior region. Included in Huronian. 
Marquette series. Upper, Van Hise. Geol. Soc. Am., Bull., vol. v, p. 6. 1893. 

Archean. Michigan. 
Marquette series. Lower, Van Hise. Geol. Soc. Am., Bull., vol. v, p. 6. 1893. 

Archean. Michigan. 
Marquette series, Lower, Smyth. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 216-223. 1894. 

Algonkian. Michigan. 
Marquette series. Van Hise and Bayley. U. S. Geol. Surv., 15th Ann. Rept, p. 517. 
1895. 
Algonkian. Lake Superior region. Includes Mesnard quartzite, Kona dolomite, 
Wewe slate, Ajibik quartzite, Siamo slate, and Negaunee formation. Exact 
syns. Lower Huronian, Lower Felch Mountain, and Lower Menominee series. 
Marquette series, Upper, Van Hise and Bayley. U. S. Geol. Surv., 15th Ann. Rept., 
p. 590. 1895. 
Algonkian. Lake Superior region. Included Ishpeming, Michigammo, and 
Clarksburg formation. 
Marquette series, Upper, Smyth. U.S. Geol. Surv., 15th Ann. Rept., p. 616. 1895. 
Algonkian. Lake Superior region. Included Goodrich quartzite. Exact syn. 
Upper Huronian. 



2U{) NORTH AMERICAN (JKOLfMlIC FORMATION NAMES. (BtLLlK 

Maniuuttw wrii-H, Ixiwfr, Smytli. I'.K.dt-ol.Siirv., I5tli Ann. Kept., p. 610. 1895. 
Alfiiinkian. Lake Sii|N!rii>r n-Kiiin. Includes .Vjibik ijuartzite, ati<l X<e^un«e 

Maniiii'ttc HtTii-)', I'piit'r, VHiiliise. U. S.timl. Kurv., Mem., vol. xxviii, pp. 403-ISU, 
,VH--)7r.. IWt7. 
Alh^Jnkillll. .Michimin. IticliultH iHtijiuiiiinK furmatiun, Michigaiiiiiie formation, 
aii<l C'larkHhurK (cinuatiim. 
Mar.|iictU! HericH, l^iwur, Van Hi*. U.SXieol.Surv., Mou., vol, xxviii, pp. 221-107, 
5.M-.'i75. 1HV17. 
Alftonkian. Michi)fa[i. Inolutlcs ^Itatianl ijiiartzite, Konn <lolomite, Weweslalr, 
Ajibik ijiiartKiU', Sianio xlatt^, and Nt^uiieo formatiun. Exact Hvn. Lower 
Nd-Doniini-v. 
Maniiiotte ueries, Upi«r, Smyth. U. H. Cwl. Surv., Mon., vol. xxviii. pp.535-53T. 
18»7. 
AlKonkian. Michigan. luitliidi'H (iuoilrii'li iiuartdt*:. 
MarqiitrtU: HuricB, I-owur, Suiytli, U, H. Geol. Surv., Mon., vol, xxviii, pp. 528-5:55. 
1HII7. 
Alt^ionkia:). Miclii^n. Inclnili'it Ajitiik ipiartKitt^, anil N(-}n>uiic-« formatiun. £iai'l 
syn. I,<JW(-r Mi-noinilitx;. 
Maniiioltc wriw., Vaii 111*;. U.K. (I.'ol. Hurv., lillli Ann. Kept., pt. iii, p. 16. im. 

Algunkiati. Michi^fan. Indudi'rl in Up|iur aixl Ixiwer. 
Manjnvttf scrii'H, U)wer, Van IliMu. U. H. <iuoi. Hurv., lilth Ann. Kept., pt. iii, 
p. 16. 1H!HI. 
Al^inkian, MJclil^an. Incliidiit Ni'^^liliii' formation, Siainoslate, Ajibik ijuanzili'., 
Wewt! Hiate, Kona ilohiniitu, Meinianl iinartxite. Exa(.-t eyns. Lower Hiirunian 
and l.«wtT MirnoniiiitH;. 
Maninette series, UpjHir, Van Iline. I'. H. (ioul. Surv., 19th Ann. Bept., pt. iii, p. lit 
180». 
Al^nkian. Miuhi^n. ECxact xyns. Cppi-r llunjnian and Upper Menominee. 
Marqiittle, Wali-ott. (.ieol. Sck-. Am. Bull., vol. x, p. 222. 18M. 

Al^iikian. Miciiigan. K.taot SytiM. felcli Mountain and MenomiiKMi. 
THaxa HiU conglomerate, Urettory. U. S. (ieol. Surv., Bull. No. 165, p. 134. IMOO. 

MarBcillea iiioraine, Lcverett. V. S. (ii'ol. Surv.. Mon., vol. xxxviii, pp. 307-316. 



eol. So,-. Am, Bnll., vol. x, pp. 199, 207. 1899. 

an. Montana. 

_■. U. S. (ieol. and (liiift.Snrv.oITerr., 11th Ann. Kepi.. 

:'liidiil in (JiiatiTiiary. 

I. Mich. (iwii. Surv., 1st liien. Kept., Prog., pp. HO, 139. 



Phii. Acail. Sill. Sd., Proc., vol. xv, p. 2. 1863. 
Phil. Ata.l. Nat. Sri,, I'roc., vol. xvii, p. 109. 1865. 

Am, Jour. Sci., 2d ser., vol. xli, p. 120, 1866, 

The Grand Traverse region, pp. ;», 52. 1866. 

Am. Phil. Soc, Pixw,, vol. ii, p. 57. 1869. 
m. Inoludex Napoleon eandstone, Marshall saniistoiK, 



WEEKS] MARQUETTE — MARTINSBURG. 261 

Marshall group, Winchell. Mich. Geol. Surv., Kept. Prog., pp. 29, 34. 1871. 

Carboniferous. Michigan. 
Marshall shale, Sinionds. Ark. (ieol. 8urv., 1888, vol. iv, p. 53. 1888. 

Carboniferous. Arkansas. Included in Lower (carboniferous. 
Marshall sandstone, Lane. Mich. Geol. Surv., liept. State Board for 1891-92, p. 66. 
1893. 

Subcarboniferous. Michigan. 
Marshall sandstone, Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 17. 1895. 

Michigan. 
Marshall shale, Drake. Am. Phil. Soc, Proc., vol. xxxvi, p. 354. 1897. 

Carboniferous. Indian Territory. Included in Boston group of Lower Carljon- 
iferous. 
Maryhall series, I^ne. U. S. Geol. Sur\%, Water-Supply Papers, No. 30, pi. vi. 1899. 

Carboniferous. Michigan. Exact syn. Kinderhook. 
Marshall series. Lane. Mich. Geol. Surv., vol. vii, pt. ii, pp. 16, 89. 1900. 

Carboniferous. Michigan. Includes Upper or Napoleon sandstone and Ix)vver 
Marshall. 
Marslialltowii shales, Beyer. Iowa Geol. Surv., vol. vii, pp. 226-227. 1897. 

Carboniferous. Iowa. Included in Kinderhook. 
Marsouin series, Dawson. Can. Roy. Soc., Trans., new ser., vol. ii, sec;, iv, p. 93. 
1896. 

Silurian. Canada. Included in Quebec* group, Upper division of group proi)er. 
Part. syn. Chazy and Trenton. 
Martinez group, Gabb. Cal. Geol. Surv., Paleontology, vol. ii, Preface, p. xiii. 
1869. 

Cretaceous. California. 
Martinez group, Stanton. Geol. Soc. Am., Bull., vol. iv, p. 253. 1893. 

Cretaceous. California. Included in Chico. 
Martinez group, Stanton. U. S. (ieol. Surv., 17th Ann. Kept, pt. i, p. 1028. 1S96. 

California. 
Martinez grouj), Merriam. Jour, of Geol., vol. v, pp. 7(57-775. 1897. 

Cretaceous. California. 
Martinez group, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 347. 1898. 

Tertiary. California. Included in Eocene. 
Martinez formation. Smith. Jour, of (Jool., vol. viii, pp. 459-4()0. 1900. 

Tertiary. California. Included in Eocene. 
Martinsburg' shale, Geiger and Keith. Geol. Soc. Am., Bull., vol. ii, p. 161. 1890. 

Silurian. Virginia and West Virginia. Exact syn. Hudson River. 
Martinsburg shale, Darton. Am. Geol., vol. x, p. 13. 1892. 

Silurian. Virginia. Part. syn. Valley limestones. 
Martinsburg shale, Keith. U. S. (ieol. Surv., 14th Ann. Rept., i)t. ii, p. 342. 1894. 

Silurian. ' Virginia and Maryland. 
Martinsburg shale, Keith. U. S. (Jeol. Surv., Geol. Atlasof U. S., Folio No. 10. 1894. 

Silurian. Virginia, Maryland, and West Virginia. 
Martinsburg shala, Darton. U. S. ( Jeol. Surv., Geol. Atlas of U. S., Folios Nos. 14, 32. 
1894, 1896. 

Silurian. Virginia and West Virginia. Exact syns. Hudson River, Rogers No. iii, 
and Matinal. 
Martinsburg formation, Clark. Md. Geol. Surv., vol. i, pp. 157-180. 1897. 

Silurian. Maryland. 
Martinsburg shale, Dartcm. U.S. Geol. Surv., (ieol. Atlasof U.S., Folio No. 61. 1899. 

Silurian. Virginia and West Virginia. 



262 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bdll.19L 

Martinsburg shale, Prosser. Jour, of Geol., vol. viii, pp. 653-663. 1900. 

Silurian. Maryland and Virginia. Included in Ordovician. 
Mctrug^a Hands, Spencer, (ieol. S(k*. Am., Bull., vol. vi, p. 126. 1894. 

Tertiary. Trinidad, W. I. Included in Pliocene. 
Marvin Creek limestone, Ashburner. 2d Pa. Geol. Surv., Kept. R, pp. 68-69. 1880. 

Carboniferous. Pennsylvania. Included in Pocono. 
Marvin Creek limestone, Lesley. 2d. Pa. Geol. Surv., Final Rept., vol. iii, pt. i, 
p. 1731. 1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Maxylandian, Heilprin. Phil. Acad. Nat. Stti., Proc., 1882, pp. 183-184. 1882. 
Lower Miocene. Included in Lower Atlantic Miocene. Exact syn. Older group of 
Maryland. Part. syn. Yorktown in part. 
Marylandian, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 119-120. 1884. 

Tertiary. Includes Lower Atlantic Miocene. Part. syn. Yorktown. 
Maryville rock, Broadhead. St. Louis Acad. Sci., Trans., vol. iv, p. 489. 1886. 

Carboniferous. Kansas. 
Maryville limestone, Campbell. U. S. Greol. Surv., Geol. Atlas of U. S., Folio 
No. 12. 1894. 
Cambrian. Kentucky, Virginia, and Tennessee. 
Maryville limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
16, 25, 27. 1895, 1896. 
Cambrian. Tennessee and North Carolina. 
Maryville limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. .>3. 
1896. 

Cambrian. Tennessee. Included in Conasauga shale. Part. syn. Knox shale of 
Safford. 
Maryville limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 
59. 1899. 
Cambrian. Virginia and Tennessee. 
(Majscarene) Mascarienne formation, Bailey and Matthew. Can. Geol. Surv., Rept, 
1870-71, pp. 148-163. 1873. 
New Brunswick. 
Mascarene series, Bailey and Matthew. Can. Geol. Surv., Rept., 1874-75, p. 85. 
1876. 
Upper Silurian. New Brunswick. Includes 5 divisions. 
Mascarene series, Bailey and Matthew. Can. Geol. Surv., Rept., 1875-76, pp. 352- 
366. 1877. 
Upper Silurian. New Brunswick. Includes 5 divisions. 
Majson series, Dunible. Texas Geol. Surv., 1st Ann. Rept, pi. iii, p. Ivii. 1890. 

Algonkian. Texas. Included in Texan system. 
MassBJiutten sandstone, .Darton. Am. Geol., vol. x, p. 14. 1892. 

Silurian. Virginia. Part. syns. Medina and Clinton. 
Massanutten sandstone, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 14. 
1894. 
Silurian. Virginia and West Virginia. 
Massillon sandst(me. Upper, Orton. Ohio Geol. Surv., vol. vii, pp. 36, 59. 1S93. 

Carboniferous. Ohio. Included in Conglomerate group. 
Massillon sandstone, Lower, Orton. Ohio Geol. Surv., vol. vii, p. 36. 1893. 
Carboniferous. Ohio. Included in Conglomerate group. 

\suk, Gilbert. U. S. Geog. and Geol. Surv., Rept. on Henry Mountains, p. 4. 
1877. 
3taceou8. Utah. 

knuska series, Mendenhall. U. S. Geol. Surv., 20th Ann. Rept, pt. vii, pp. 307- 
309. 1900. 
^naceous. Alaska. 



WEEK8.1 MARTINSBURG MAUCH CHUNK. 263 

Matanzas series, Spencer. Greol. Soc. Am., Bull., vol. vi, p. 124. 1894. 

Tertiary. Cuba. Included in Pliocene and Lafayette. 
Matanzas formation, Spencer. Geol. Soc. Am., Bull., vol. vii, pp. 67, 81. 1895. 

Tertiary. Cuba. Included in Pliocene. 
Matawan, Clark. N. J. Geol. Surv., Kept., 1893, pp. 335-336. 1894. 

Cretaceous. New Jersey. Exact syn. Cli^y marls. 
Matawan formation, Clark. Jour, of Geol., vol. ii, pp. 163-164. 1894. x 

Cretaceous. New Jersey. Exact syn. Cla^y marls. 
Matawan formation, Clark. Geol. Soc. Am., Bull., vol. vi, pp. 479, 480. 1895. 

Cretaceous. New Jersey. 
Matawan formation, Shattuck. Johns Hopkins Univ. Circ, vol. xv, p. 15. 1895. 

Cretaceous. New Jersey. Exact syn. Clay marls. 
Matawan, Darton. U. S. Geol. Surv., Bull. No. 138, p. 40. 1896. 

Cretaceous. New Jersey. 
Matawan, Clark. Md. Geol. Surv., vol. i, pp. 156, 193. 1897. 

Cretaceous. Maryland. 
Matawan formation, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, 
pp. 315, 326. 1897. 

Cretaceous. New Jersey. Included in Upper Cretaceous. Includes Crosswicks 
clays, Hazlet sands. 
Matawan formation, Clark, Bagg and Shattuc^ N. J. Geol. Sur\\, Kept., 1897, 
pp. 175-180. 1898. 

Cretaceous. New Jersey. Included in Upper Cretaceous. Includes Crosswicks 
clays and Hazlet sands. 
Matinal series, Rogers. Am. Jour. Sci., Ist serieg, 1844, vol. xlvii, p. 155. 1844. 
Includes rocks from the base of the Calciferous sandstone to the top of the 
Hudson River slates. 
Matinal series, Rogers. Geol. of Pa., vol. i, pp. 105, 124-126, 239, 246, 252, 260, 
et seq., vol. ii, p. 752. 1858. 

Silurian. Pennsylvania. Includes Trenton, Utica slates, and Hudson River slate. 
Matthews Landing group, Aldrich. Ala. Geol. Surv., Bull. No. 1, p. 59. 1886. 

Tertiary. Alabama. 
Matthews Landing series, Smit" and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 57. 
1887. 

Tertiary. Alabama. Included in Lower Eocene, Lignitic. 
Matthews Landing, Langdon. Geol. Soc. Am., Bull., vol. ii, p. 588. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Mauch Chunk red shale, Ashbumer. Am. Phil. Soc, Proc, vol. xvi, pp. 521, 536. 
1877. 

Carboniferous. Pennsylvania. Includes Mountain limestone. Exact syn. Umbral. 
Mauch Chunk red shale, Piatt. 2d Pa. Geol. Surv., Rept. H^ p. xxvi. 1877. 
Mauch Chunk red shale, Ashburner. 2d Pa. Geol. Surv., Rept. F, pp. 194-206. 
1878. 

Carboniferous. Pennsylvania. 
Mauch Chunk shale, Stevenson. 2d Pa. Geol. Surv., Rept. K^, pp. 47-53. 1878. 

Carboniferous. Pennsylvania. Exact syn. Umbral. 
Mauch Chunk, Ashburner. 2d Pa. Geol. Surv., Rept. R, pp. 63-64. 1880. 

Carboniferous. Pennsylvania. Exact syn. No. xi. 
Mauch Chunk red shale. Chance. 2d Pa. Geol. Surv., Rept. G*, pp. 95-96. 1880. 

Carboniferous. Pennsylvania. Exact syn. No. xi. 
Mauch Chimk shale, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 19-22. 1881. 

Carboniferous. Pennsylvania. Exact syn. No. xi. 
Mauch Chunk red shale, White. 2d Pa. Geol. Surv., Rept. G*, pp. 55-56. 1881. 

Carboniferous. Pennsylvania. Exact syn. No. xi. 



2fi4 NI)RTH AMKRICAN OKOLfWIC FORMATION NAMES. [«rl.L.l9L 

Maiiih Chunk «liale, Sttvcnwin. al Pa. lieol. Kurv., RepL T*. pp. 67-69. 1882. 

(. 'art « in i ten nil'. I V n n ny 1 vania. 
Manili fliunk wliale, Wliilp. 2<1 Pa. (itol. Siin„ Kept, ti', pp. NH-89. 1882. 

C«r1)oni[er[iiii'. PfniiKytvania. Kxact Hyn. No. si. 
Maueh Chunk uliale, M'hitc. 2.1 I"*. Gwl, Sun., Kept. C, pp. 44-46. 1883. 

Carlxinifynmi'. Pen nwy Ivan ia. Exart pyn. No. xi. 
Mamh Chunk »liak', Wh'ity. 2.1. I-a. (Jeol. Sun.. Kept. T", j.p. 73-77. 1885. 

CHrlKit]ifer.>iiii. Poimoylvania. 
Maurh Cliuiik xliale, AHhhumer. 2.) Pa. Oi-ol. Sun., Ki-pt. It*, p. 395. 1885. 

CarlKinifeniiui. Pcnnxylvania. Kxact syu. Nii. xi. 
Maufh Chnnk n-.! nlmlf, W inflow. 2.i I'a. (ieol. Snn„Ann. Kept. 1KK«, pt iv, 
pp. I.t:i7, 1347, 1348, l;l.52. 1S87. 
Carboiiifennie. I\!nnitylvania. Kxact xyn. No. si. 
Mani-h Chunk, WhiU.-. Vif.il. S<x-. Am., Bull., vol. iii, p. 19a 1802. 

lyiwer Carbon if croiix. West VirRinia, 
MaUfh Cliunk nil nliak', Lesley. 2.1 Pa. (ieiil. Snrv., Final Repl., vol. iii, pL i, 
pp. IKftl, IH-W. 1K!I5. 
Carlioiiifcroui>. Pennsylvania. Kxact tiyni.. No. xi, Uinhral of Rj^wrs. 
Maufh Chunk re.1 Hiiali', Ilopkini'. I'enn. Slate Coll. Ann. Rept. for im)6, Appendix, 
pp. »l-lft'>. IW17. 
CarlK)n(fi'r.mB. Pennnylvanla. Include.! in I»wer C^arlwniferoiMi. 
MaucU Chunk. Clark. Mil. (iei.l. Sun-., viil. i. pp. 156, 185. 18»7. 

Carl H nil fer. Ills. Marylan.l. Kxtu't nyn. C'anaan fonnation. 
Mamh Chunk n^l ^halex. White. W. Va. (ie<il. Sun., vol i, p. 203. 1899. 

C8rlmnifi'r.iii[i. W(^ Virginia. 
Maui'h Chunk fonnalion. O'llarra. Mil. (ieol.Surv., Alle^wiy County, p. 112. 1900, 

Carboniferous. Marylan.l. 
Kaxvaiesanilstone, Ati.lrewP. Ohio (Jeol. Knn., Repl. Prog., 1869, pp. 80,84. 1870, 

Ohio. 
MaivillelimePlone, Anilrews. Ohio Geiil. Surv.. Kept.. ia70,p.6.3. 1871. 
Maxvillelitnci.toiie,An.lrewE. OhioGe..!. Sun., Rept., 1869, p. 83. 1871. 

Ol.i... 
Maxville limestone, Andrews. Am. Jour. Si.-i., 3,1 ser., vol. i, pp. 91-92. 1871. 
Oarlxinifennis. Khi.i. Inclu.leil in lyiwer CarlmniferouB. Rxact syn. Chester 
trroup of IllinoiH. 

lerry. Ohio Geol. Sun., v.jI. ii, pp. 100-102. 1874. 
Inchiile.1 in LowiT Carlmniferons limestone. 
. Ohio Geol. Surv., vol. iii, p. 890. 1878. 
ExacI syn. Wliite liiiieslone. 
Oliio Geol. Snn-., vol. iii, p. 817. 1878. 

ick. IViiis.m Univ. S<i. Lab., Bull., vol. ii, pp. 14, 15. 

. Ohio (ie.i). Surv., vol. vi, pp. 3,43. 1888. 
Exact syns. Nctttodville limestone, Subcarboniferous 

ik, IVnison I'niv. Sei. Lab., Bull., vol. iH, p. 20. 1888. 

Mi.'b. «ieol, Surv., vol. vii, |it. ii, pp. 12,296. 1900. 

irvanl Coll. Sins. Oinip. Z.x>l., Bull., vol. xxxiv, p. 84. 

JaiiiaiiTi. lnclu.l.-.| In Cmislal wries. 



WEEKS] MA ITCH CHUNK — MEDINA. 265 

Mayville beds, Chamberlin. Geol. of Wis., vol. ii, pp. 336-345. 1877. 

Upper Silurian. Wisconsin. Included in Niagara. 
Mayville beds, Chamberlin. Geol. of Wis., vol. i, p. 187. 1883. 

Silurian. Wisconsin. Includeil in Niagara. 
Meade gravels, Cragin. Colo. College Stud., vol. vi, p. 53. 1896. 
Tertiary. Kansas. Included in Late Pliocene, the Tule division of Cummins 
(Equus beds of Cope). 
Meade gravels, Williston. Kan. Univ. Geol. Surv., vol. ii, pp. 300-308. 1897. 

Pleistocene. Kansas. 
Meadville group, White. 2d Pa. Geol. Surv., Kept. Q*, pp. 83-90. 1881. 
Carboniferous. Pennsylvania. Includes Meadville limestone and shale, Sharps- 
ville sandstone, and Orangeville shale. 
Meadville group, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. iii, pt. i, p. 1757. 
1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Meagrlier limestone. Weed. U. S. Geol. Surv., 20th Ann. Kept., pt. iii, p. 285. 
1900. 
Cambrian. Montana. 
Medicine beds, Gould. Am. Jour. Sci., 4th ser., vol. v, pp. 171-174. 1898. 
Cretaceous. Kansas. Includes Reeder sandstone, Kirby clays, (Treenleaf sand- 
stone, and Spring Creek clays. 
Medicine Lodge gypsum, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 29-39. 1896. 

Permian. Kansas. Include<l in Cave Creek formation. 
Medicine Lodge gypsum, Cragin. Am. Geo!., vol. xix, pp. 356-358. 1897. 
Permian. Kansas, Oklahoma. Included in Cave Creek formation, of Cimarron 
series. 
Medidial series, Rogers. Am. Jour. Sci., 1st ser., vol. xlvii, p. 155. 1844. 

Includes Schoharie grit, Onondaga and Corniferous limestone. 
Medina sandstone, Vanuxem. Geol. of New York, pt. iii, pp. 71-74. 1842. . 
Paleozoic. New York. Included in New York system. Includes Red sandstone 
of Oswego, Niagara sandstone, Saliferous rock of Eaton, and No. 5, Pennsyl- 
vania Survey. 
Medina, Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 34-57. 1843. 
Paleozoic. New York. Included in New York system. Exact syns. Saliferous 
of Eaton, Niagara sandstone. Red sandstone of Oswego, Varief^ated sandstone. 
Red marl and sandstone, and No. 5, Pennsylvania Survey. 
Medina sandstone, Emmons. Agric. of New York, vol. i, pp. 142-144. 1846. 

New York. Included in Ontario division of New York system. 
Medina sandstone, Hall. Paleontology of New York, vol. ii, pp. 2-4. 1852. 

Silurian. New York. 
Medina formation, Logan. Can. Geol. Surv., Rept. 1843-63, pp. 310-321. 1863. 

Middle Silurian. Canada (western). Included in Anticosti group. 
Medina and Clinton formation. Chapman. Can. Inst, new ser., vol. viii, pp. 208-210. 
1863. 
Silurian. Canada. Included in Middle Silurian. . Niagara group. 
Medina formation. Bell. Can. Geol. Surv., Rept. 1863-66, pp. 173-174. 1866. 

Silurian. Canada. 
Medina sandstone, Cook. Geol. of New Jersey, pp. 150-153. 1868. 

Silurian. New Jersey. 
Medina, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 61, 103, 126. 1873. 

Silurian. Ohio. 
Medina, Ajshbumer. Am. Phil. Soc, Proc, vol. xvi, pp. 532, 557. 1877. 
Silurian. Appalachian region. Part. syn. Levant in part. 



266 NOBTH AMERICAN UEOLOQIO FOBMATION NAMES. [bdli.19L 

Medina, Newberry. Ohio (ieol. Surv., vol. iii, p. 4. 1878. 

Silurian. Ohio. Incluilei) in Upjier Kilurian. 
M»»dina, PUtt. 2d Pa. (iwl. Surv., Bept.T, pp. 44-18. 1K81. 

SiluriaD. Penney I van ia. Inuluded in No. iv. 
Medina group, Miller. Cia. Soc. Nat. Hist, Jour., vol. iv,No. iv, pp. 268, 288. 1881. 

Silurian. Incluilen Medina sandstone, Oneida conglomerate, and Gray sandstone. 
Medina sandxtoDe, Linney. Ky. Geol. Surv. (Proctor), Ueol. of Lincoln County. 
1882. 

Silurian. Kentucky. Included in Niagara period. 
Medina, White. 2d Pa. Geo). Surv., Kept. «*, pp. 14»-152. 1882. 

Silurian. Pennsylvania. IncJndeM Oneida conglomerate. Exact syn. No. iv. 
Medina, Stevenson. 2d Pa, Geol, Surv., Rept T*, pp. 91-82. 1882. 

Silurian. Pennsylvania. 
Medina, Stevenson. Aui. Phil. Sue., Proc.,vot. xii, pp. 137, 140. 1885. 

Silurian. Virginia. 
Medina, White. 2d I^ Geol. Surv., Kept. T*. pp. 143-147. 1885. 

Silurian. Pennsylvania. 
Medina, Claypole. 2d Pa. Geol. Surv., Kept. F", pp. 43-^. 1885, 

Silurian. Pennsylvania. 
Medina, Linney. Ky. Geol. Surv,, Geol. of Linney Co., p. 16. 1888. 

Silurian. Kentucky. 
Medina group, Miller. North American Geol. and Pal., p. 48. 1889. 
Medina ehale, Ortun. U. S. Geol. Surv., 8th Ann. Kept., pt. li, p. 558. 1889. 

Silurian. Ohio, Indiana. 
Medina shale, Orton. Ohio lieol. Surv., 3d Organization, Ist Ann. BepL, pp. 16-17. 
1890. 

Silurian. Ohio. 
Medina, Brumell. Geol, Soc, Am., Bull, vol. iv, pp. 227, 232. 1893. 

Silurian. Ontario. 
Medina, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 100-108, 118, 1893. 

Silurian. New York. 
Medina sandstone, Williams and Clark. Maryland; Ito Resources, Industries, and 
Institutions, p. 70, IH93, 

Silurian, Maryland. Part. syn. No, iv. 
Medina, Spencer. Ga. Geol. Surv., The Paleozoic Group, 1893, 

Silurian. Geoi^ia. Included in Bed Mountain. 
Medina sandstone, Ries. N, Y, State Geol,, 15th Ann. Kept., vol. i, p. 401. 1897. 

Silurian, New York. 
Medina sandstone, Lnther. N. Y. State Geol,, 18th Ann. Bepu, p. 201. 1899, 

Silurian. New York. 
Heekocerae beds, Peale. U. S. Ueol. and Geog. Surv. of Terr., 11th Ann. Kept, 
p. 623. 1879. 

Juratrias. Idaho and Wyoming. Included in Tria8sic(?), Exact syn. KoipaW 
group, 
woo..i»n,rT luvic H.ir^, u. S. (Jeol. and Gec«. Surv. of Terr,, Bull., vol. v, 

) Pliocene. 

I, Am. <ieoI., vol, vii, p, 340. 1891. 

Part. ayn. Equus beds. 
. Jour, of Geol., vol. il, pp. 408-414. 1804. 

ing. Am. Jour. Rui., 3d aer., vol, ix, pp. 441-442. 1875, 
Included in C^injJiau. Part syn. St. lAwranca UmestoiH. 



WEEKS.] MEDINA MERCER. 267 

Mendota limestone, Chamberlin. Geol. of Wis., vol. ii, p. 260. 1877. 
Mendota limestone, Irving. Geol. of Wis., vol. ii, pp. 525, 577, 583-584, 590-592, 
602, 603. 1877. 
Lower Silurian. Wisconsin. 
Mendota, Walcott. U. 8. Geol. Sury., Bull. No. 81, pp. 245, 332. 1891. 

Cambrian. Wisconsin. Included in Potsdam. 
Mendota limestone, Keyes. Iowa Geol. Surv., vol. i, p. 23. 1893. 

Cambrian. Iowa. Included in Potsdam sandstone. Exact syn. St. Lawrence 
limestone. 
Mendota limestone. Hall and Sardeson. Geol. Soc. Am., Bull., vol. vi, pp. 167, 174. 
1895. 
Cambrian(?). Wisconsin. Exact syn. St. Lawrence. 
Menevian slates. Hunt. Boston Soc. Nat. Hist., Proc., vol. xix, 1876-78. p. 278. 

1878. 
Keniscus limestone, Safford. Geol. of Tennessee, by Safford. 1869. 

Silurian. Tennessee. Included in Niagara group. 
Meniscus limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 51. 1890. 

Silurian. Arkansas. Included in Niagara. 
Menomiiiee, Irving. U. S. Geol. Surv., 3d Ann. Rept, pp. 166-168. 1883. 

Archean. Michigan. Included in Huronian. Exact syns. Animikie, Penokee, 
and Marquette. 
Menominee series (Lower) Smyth. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 216-223. 
1894. 
Algonkian. Michigan. 
Menominee, Lower, Van Hise. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 16. 
1899. 
Algonkian. Michigan. Includes Vulcan iron formation, Antoine dolomite, and 
Sturgeon quartzite. 
Menominee, Walcott. Geol. Soc. Am. Bull., vol. x, p. 222. 1899. 

Algonkian. Michigan. Exact syns. Lower Huronian, Keewatin in part, Lower 
Marquette, and Felch Mountain Iron series. 
Menominee series. Upper, Van' Hise and Bayley. U. S. Geol. Surv., Geol. Atlas of 
U. S., Folio No. 62. 1900. 
Algonkian. Michig6,n. Includes Vulcan formation. 
Mentor beds, Cragin. Am. Geol., vol. xvi, p. 162. 1895. 

Cretaceous. Kansas. Included in Comanche series. 
Mentor beds, Prosser. Kan. Univ. Geol. Surv., vol. ii, pp. 182-194. 1897. 

Lower Cretaceous. Kansas. Included in Comanche series. 
Mentor beds, Jones. Kan. Acad. Sci., Trans., vol. xv, pp. 111-112. 1898. 

Lower Cretaceous. Kansas. 
Mentor beds, Jones. Kan. Acad. Sci., Trans., vol. xvi, pp. 65-66. 1899. 

Cretaceous. Kansas. Included in Dakota. 
Merced series, Lawson. Univ. of Cal., Bull. Dept. of Geol., vol. i, pp. 115-160. 
1894. 
Pliocene. California. 
Merced series, Ashley. Jour, of Geol., vol. iii, pp. 439, 441-446. 1895. 

Tertiary. California. Included in Pliocene. 
Merced series, Ashley. Cal. Acad, of Sci., Proc., 1895, 2d ser., vol. v, p. 312. 1896. 

Tertiary. California. Included in Pliocene. 
Merced group. Ball. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, pp. 336-337. 1898. 

Tertiary. California. Included in Pliocene. 
Merced formation. Turner. Jour, of Geol., vol. vi, p. 499. 1898. 

Tertiary. California. Included in Pliocene. Exact syn. Wild Cat series. 
Meroer limestone, Rogers. Geol. of Pa., vol. ii, p. 477. 1858. 



268 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

MenerKTOup, Chance. 2(1 Pa. (ieol. Surv., Rept. V, p. 185, ot seq. 1H79. 

('arlM)inferou8. Pennsylvania. 
Mereer, Piatt. 2d Pa. (leol. Surv., liept. H^ p. .325. 1880. 

Carboniferous. Pennsylvania. 
Mender limestone (Lower), Orton. Ohio GeA. Surv., vol. v, p. 13. 1884. 
Carl)oniferous. Ohio. Exaet syns. Zoar limestone and Blue limt^tone. 
Mercer limestone, Uppt»r, Orton. OhioCJeol. Surv., vol. v, p. 15. 1884. 

CarlKjniferous. Ohio. Exact svn. Gore limestone. 
Mercer j^roup. White. U. S. (Jeol. Surv., Bull. No. 65, p. 200. 1891. 
Carl)onift*rous. Ohio, Pennsylvania, and West Virginia. Included in Pottsville 
Conglomeratic series. Includes Upper and Lower Mercer. Part. syns. Zoar 
limestone and Blue limestone. 
Mercer group. Lower, Orton. Ohio iivo]. Surv., vol. vii, pp. 36, 59, 61. 1893. 

Carboniferous. Ohio. Included in (Conglomerate group. 
Mercer group, Upptcr, Ortcm. Ohio (Jeol. Surv., vol. vii, pp. 36, 59, 62. 1893. 

Carboniferous. Ohio. Included in Conglomerate group. 
Mercer group, IVInvilliers. 2d Pa. Oeol. Surv., Final Rept, vol. iii, pt. i, p. 1902. 
1895. 
Carboniferous. Pennsylvania. Includtnl in No. xii, Pottsville Conglomerate. 
Meridiaji series, Rogers, (icol. of Pa., vol. i, pp. 107, 137-138, 273, et seq., vol. ii, 
p. 755. 1858. 
Silurian. Pennsylvania. Includes Oriskany. 
' Merigomisli formation, Ami. Can. Rec. Sci., vol. viii, pp. 162-163. 1900. 

Carl)oniferou8. Canada. IncludtHl in Neo-Carboniferous. 
' Merom sandstone, CoUett. Indiana Geol. Surv., 2d Rept, for 1870, p. 199. 1871. 
CarlM>niferous. Indiana. 
Merom rock, ('oUett Indiana Oeol. Surv., 5th Ann. Rept, for 1873, pp. 320, 321, 
323, 388. 1874. 
Carboniferous. Indiana. Exact syn. Fort Knox sandstone. 
Merom sandstone, Collett Indiana Geol. Surv., 7th Ann. Rept., 1875, pp. 251,254. 
1876. 
Indiana. 
Merom sandstone, Collett. Indiana Dept. Geol. and Nat. Hist, 13th Ann. Rept, 
1883, pp. 8, 48, 49, 55. 1884. 
Carboniferous. Indiana. 
Merom sandstone, Blatchley and Ashley. Indiana Dej^t. Geol. and Nat. Resources, 
22d Ann. Rept., pp. 16, 22. 1898. 
Cretaceous or Juratria.^. Indiana. 
Merom sandstone, Ashley. Indiana Dept. (ieol. and Nat. Res., 23d Ann Rept, 1898, 
pp. 74, 909. 1899. 
Triassic (?). Indiana. 
Merrimack group, Hitchcock. (Jeol. of N. IL, pt ii, pp. 588--591, 621. 1877. 

Paleozoic. New IIami)shire. 
Merrimack group, IIit<*,hcock. Am. Mus. Nat. Hist, Bull., vol. i, 1881-86, p 179. 
1884. 
Vermont and New Hampshire. 
Merrimack grouj), Hitchcock. Jour, of Geol., vol. iv, p. 54. 1896. 

Algonkian or Cand)rian. New Hampshire. Included in Montalban. 
Mesa sandstones, Gabb. Cal. Acad. Sci., Proc, 2d ser., vol i, p. 175. 1867. 
"Jretaceous. Baja California, 
a formation, Goodyear. Cal. State Mg. Bur., Rept., vol. viii, 1888, p. 518. 1888. 
lifomia. 

k formation, Blake. Rept. of (governor of Arizona to Secretary of Interior, 1899, 
p. 143, 1900. 



WEEKS] MERCER MIDLAND. 269 

Mesa Verde group, Holmes. U. S. (5eol. and. Geog. Siirv. of Terr., 9th Ann. Rept., 
pp. 245, 248. 1877. 
Cretaceous. Colorado. 
Mesabi moraine, Elftman. Am. Geol., vol. xxi, pp. 93-94. 1898. 

Pleistocene. Minnesota. 
Mesnard formation, Wadsworth. Mich. (ieol. Surv. Rept. State Board for 1891 and 
1892, p. 6^. 1893. 
Azoic or Archean. Michigan. 
Mesnard, Van Hise. Geol. Soc. Am., Bull., vol. v, p. 6. 1893. 

Archean. Michigan. Included in Marquette series. 
Mesnard quartzite, Van Hise and 3ayley. U. S. Geol. Surv., 15th Ann. Rept., p. 516. 
1895. 
Algonkian. Lake Superior region. Included in Lower Marquette series. 
Mesnard quartzite. Van Hise. U. S. Geol. Surv., Mon., vol. xxviii, pp. 221-239. 
1897. 
Algonkian. Michigan. Included in Lower Marquette series. 
Michigramme formation. Van Hise and Bay ley. U. S. Geol. Surv., 15th Ann. Rept., 
p. 598. 1895. 
Algonkian. Lake Superior region. Included in Upper Marquette series. 
Michigamme formation, Van Hise. U. S. Geol. Surv., Mon., vol. xxviii, pp. 444-459. 
1897. 
Algonkian. Michigan. Included in Upper Marquette series. 
Michigamme formation. Van Hise. Geol. Soc. Am., Bull., vol. ix, p. 281.. 1898. 

Algonkian. Michigan. Included in Upper Marquette series. 
Michigamme formation. Van Hise. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 16. 
1899. 
Algonkian. Michigan. Included in Upper Marquette series. Exact syn. Upper 
Menominee. 
Michigan salt group, Taylor. Rept. Committee on Salines, relative to the Saline 
resources State of Michigan, p. 3. 1839. 
Michigan. 
Michigan salt group, Winchell. Mich. Geol. Surv., Ist Bien. Rept. Prog., pp. 91, 
139. 1861. 
Carboniferous. Michigan. 
Michigan salt group, Rominger. Mich. Geol. Surv., voL iii, pt. i, p. 102. 1876, 

Carboniferous. Michigan. 
Michigan series. Lane. U. S. Geol. Surv., Water-Supply Papers, No. xxx, pi. vi, 1899. 

Carboniferous. Michigan. 
Michigan series. Lane. Mich. Geol. Surv., vol. vii, pt. ii, pp. 13, 98, 294. 1900. 

Carboniferous. Michigan. 
Middle cong^lonierate group, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, 
p. 1667. 1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono. Exact syn. No. xb. 
Middle Park beds, Clark. U. S. Geol. Surv., Bull. No. 83, p. 137. 1891. 

Cretaceous. Colorado. 
Middle Park beds, Cross. Colo. Sci. Soc, Proc, vol. iv, pp. 192-214. 1892. 

Post Laramie.. Colorado. Part. syn. Denver beds. 
Middleboro clays. Wood worth. U. S. Geol. Surv., 17th Ann. Rept, pt. i, p. 985. 1896. 

Pleistocene. Massachusetts. 
Middleton formation, Safford. Geol. Soc. Am., Bull., vol. iii, pp. 511, 512. 1892. 

Tertiary. Tennessee, Alabama, Mississippi. Included in Eocene. 
Midland sands, Willis and Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 54. 1899. 
Pleistocene. Washington. 



270 NORTH AM£BICAN GEOLOGIC FORMATION NAMES. [BOLL.l«i 

mdway series, Smith and Johnson. U. S. Geo!. Sarv., Bull. No. 43, p. 62. 1887. 

Tertiary. Alabama. Included in Lower Eocene and Lignitic. 
Midway, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 595. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Midway or Clayton series, Langdon. Ga. Geol. Surv., Ist Kept, of Prog., p. 95. 1891. 

Tertiary. Georgia. 
Midway division, Spencer. Ga. Greol. Surv., Ist Kept, of Prog., p. 44. 1891. 

Tertiary. Georgia. Included in Eocene. Exact syn. Clayton division. 
Midway or Clayton stage, Harris. Ark. Geol. Surv., 1892, vol. ii, pp. 22-55. 1892. 

Tertiary. Arkansas. Included in Eocene series. 
Midway stage, Harris. Am. Pal., Bull. No. 4, pp. 10-11. 1896. 

Tertiary. Gulf States. Included in Eocene. 
Midway stage, Dall. U. S. Geol. Surv., 18th Ann. Rept, pt. ii, p. 346. 1898. 

Tertiary. Alabama. Included in Eocene. Exact nyn. Clayton group. 
Midway stage, Harris and Veatch. La. State Exp. Sta., pt. v, pp. 63-64. 1899. 

Tertiary. Louisiana. Included in Eocene. 
Midwayan stage, Vaughan. U. S. Geol. Surv., Mon., vol. xxxix, p. 25. 1900. 

Tertiary. Gulf States. Included in Eocene. 
Mifflintown limestone, Lesley. 2d Pa. Geol. Surv., Rept. F, pp. xxv-xxvi. 1878. 

Silurian. Pennsylvania. 
Milburn shales, Tarr. Am. Geol., vol. vi, p. 150. 1890. 

Carboniferous. Texas. Included in Upper Carboniferous. 
Milbum-Strawn, Dumble. Texas Geol. Surv., let Ann. Rept., pi. iii, p. Ixvi. 1890. 

Carboniferous. Texas. Included in Coal Measures. 
Miliolite limestone, Dall and Harris. U. S. (ieol. Surv., Bull. No. 84, pp. 104, 331. 
1892. 

Tertiary. Florida. Included in Miocene. 
Mill Creek limestone. Ash burner. 2d Pa. Geol. Surv., Rept., 1885, p. 443 et seq. 
1886. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Miller fire clay, Wheeler. Mo. Geol. Surv., Sheet Rept. No. 2, p. 57. 1893. 

Upper Carboniferous. Missouri. Included in Lower Coal Measures. 
Millers River conglomerate, Shaler, Wood worth and Foerste. U. S. Geol. Surv., 
Mon., vol. xxxiii, p. 140. 1899. 

Carboniferous. Rhode Island. Included in Pondville group. 
Millsap division, Cummins. Texas Geol. Surv., 2il Ann. Rept., pp. 372-373. 1891. 

Carboniferous. Texas. Included in Coal Measures. 
Millsap limestone, Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 7. 1894. 

Carboniferous. Colorado. 
Millsap limestone, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 

Carboniferous. Colorado. 
Millstone grit, Tuomey. Ala. Geol. Surv., 1st Bien. Rept, p. 71. 1850. 

Carboniferous. Alabama. 
Millstone grit, Owen. First Report of a Reconnoissance of Northern Arkansas, 
1857-58, pp. 135, 137. 1858. 

Arkansas. 
Millstone grit, Lesquereux. Am. Phil. Soc, Proc, vol. ix, p. 199. 1863. 

Carboniferous. Arkansas. 
Millstone grit, Cox. 111. Geol. Surv., vol. vi, pp. 223-224. 1875. 

Carboniferous. Illinois. Included in Coal Measures. 

"llstone grit, or The Conglomerate, Shaler. Ky. Geol. Surv., vol. iii, new ser., pp. 
186-190. 1877. 
arboniferous. Kentucky. 



WEEKS.] MIDWAY MISSION CREEK. 271 

Millstone grit, Bailey and Ells. Can. Geol. Surv., Rept. of Prog., 1876-77, p. 383. 
1878. 

Carboniferous. New Brunswick. 
Millstone grit (False), Harris. Ark. Geol. Surv., 1888, vol. iv, pp. 152-153. 1888. 

Carboniferous. Arkansas. Included in Coal Measure or Pennsylvanian. 
Millstone grit formation, Simonds. Ark. Geol. Surv., 1888, vol. iv, pp. 106-112, 152. 
1888. 

Carboniferous. Arkansas. Included in Coal Measures or Pennsylvanian. 
Millstone grit, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 140-141, 498. 1890. 

Carboniferous. Arkansas. Included in Coal Measures. 
Millstone grit group, Squire. Ala. Geol. Surv., Rept. on Cahaba Coal Field, p. 14 
et seq. 1890. 

Carboniferous. Alabama. Included in Coal Measures. 
Millstone grit, Fletcher. Can. Geol. Surv., Descriptive note on Sydney Coal Field, 
pp. 7-8. 1900. 

Carboniferous. Nova Scotia. 
Milton series. Turner. Am. Geol., vol. xiii, p. 232. 1894. 

Juratrias. California. 
Milton formation, Turner. U. S. Geol. Surv., 17th Ann. Rept., pt. i, p. 624. 1896. 

Juratrias. California. 
Milton formation, Turner. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 37. 
1897. 

Juratrias. California. 
Milwood series, Tyrrell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 83E, 144E, 
199E, 212E-215E. 1893. 

Cretaceous. British Columbia. Included in Pierre. 
Minbo, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxiv, p. 57. 1899. 

Cretaceous. Jamaica. Included in Blue Mountain series. 
Mineral King^, Turner. Am. Geol., vol. xiii, p. 231. 1894. 

Juratrias. California. 
Mineral King beds. Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 451. 1894. 

Juratrias. California. Included in Triassic (?). 
Minne-luusa sandstone, Winchell. Rept. of a Reconnoissance of the Black Hills by 
Capt. Ludlow, pp. 38, 63. 1875. 

South Dakota. 
Minnesota River Valley gneiss, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 

Archean. Minnesota. 
Miabippus series, Marsh. Am. Jour. Sci., 3d ser., vol. xiv, p. 355. 1877. 
Miohippus beds, Marsh. Am. Jour. Sci., 3d Ser., vol. xlviii, pp. 91-92. 1894. 

Tertiary. Oregon. Included in Miocene. 
Mispeck group, Matthew. Can. Nat., vol. viii, p. 244. 1863. 

New Brunswick. 
Mispec group, Bailey and Matthew. Can. Geol. Surv., Rept. 1870-71, pp. 180-183. 
1873. 

Devonian. New Brunswick. 
Mispeck group, Matthew. Can. Roy. Soc, Trans., 1894, vol. xii, sec. iv, pp. 89-111, 
1895. 

Devonian. New Brunswick. Exact syn. No. i, Dawson. 
Mission Creek series, Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 175-184. 
1898. 

Cretaceous. Alaska. 
Mission Creek series, Emmons. Nat. Geog. Mag., vol. ix, p. 158. 1898. 

Cretaceous (in part). Alaska. 



272 NOKTH AMKKIl'AN OKOLOUIC FORMATION NAMES. Ibitluwi. 

MiMuaippi );ruu|>, Witichell (A.). Am. Phil. Soc., Proc., vol. si, p. 79. 1869. 

PmiMimit iianic fur (Turk >iii fun lue limuttunra of the United Rutee. 
Mimiwippiaii Beriii', BratiDur. Ark. (ieol. Kurv., 18K8, vol. iv, p, xiii. 1888. 

CarlMinifeniUH. Arkaiua.><. Inulu<lud in Pennine. Jncluiies Boston, Genevieve, 
and OiiBfci! itroiipB. 
MiatiHHippianxeriix, WillluiiH. U. R. Geol Surv., Bul]. No. 80, pp. 135, 169. ISD1. 

Carliuiiif<'ri>iui. In<-1(i<luH (ienevievu, Osi^, an<) ChouUiaii groups. 
HiiHiwi|ipiau st-TiiM, Keyes. lowalieol. Surv., vol. i, pp. 47-80. 1893, 

GarbuniferouH. Iowa. lnclu<l(.ii Kinderhook, Auj^ta, St, Louis, and Kaskiukia. 
MiiwMppian Heria>, Kcyi-H. Iowa Geol. Surv., vol. ii, pp. 69-91. 1694. 

OarlMiniferouK. Iowa. Kxa4:t »yn. Lower Carboniferous. 
Mimiwippian, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 43-79. 1894. 

Lower Carlxinifuroiis. Mituouri. Includes Kaskaakia, St. Louis, Augusta, and 
KimliThiMik Mlagi-H. 
Missistiiiiplaii liiiiestune, llawurtli. Kan. Univ. l!eol. Surv., vol. i, pp. 35-57, 147-149. 
IHiW. 

CarlKiiiiferuUH. KatiKUS. 
Misxiwippiaii suritP!', Bain. luwaGuiil. Surv., vol. v, pp. 130-151. 1896. 

GarlHinifc-ruiU'. Iowa. Inrlmles Kiiiderli<H)k, .AuKiista, anil St. Ix>ms. 
MisNiMtippian s.ries, Adams. Kan. I'niv. Gi'ul. Surv., vol. i, pp. 16-18. 1896. 

<.'ar))uniferonx, Kansaa. 
MiHHiHHippiun wirits*, Hcyur. Iowa (iuol. Surv., vol. vii, pp. 219-227. 1897. 

CarlNiiiiferoiiH. Iowa. ImJudes Kinderhook, AugUHta, and St. Louis. 
MisHiN^ipiiian, liawortli. Kan. Univ. Geol. Surv., vol. iii, pp. 14-19, 96. 1898. 

CarlHinifenius. Kansas. Exact syn. Su]>carlx>ui[erous. 
MisHisHppian, MarlHit. Mo. (!eol. Surv., volxii, pt. ii, p. 323. 189K. 

Lower Carl ion iferous. Missouri. Inuludea Augusta, and Burlinglon. 
MiHsisaippian Murifs, Shejwrd. Mo. (Jeol. Surv., vol. xii, p. 4'J. 1K1I8. 

Lower Carl Kin ife runs. Missouri. Includes Augusta and Kinderli<K>k stagee. 
Misaisaippian series, Keyes. Am. Geol,, vol. xxii, pp. 108-113. 1898. 

Carl)onifen>us. 
HiMonri formation, Kuyiw. Iowa Geol. Surv., vol. i, pp. 114-116. 1893. 

Cartmn iferous. Iowa, Included in Pennsylvanian series. Exact syn. Upper Coal 
Mea.'iurei'. 
Missouri formation, Koyes. Iowa Geol. Surv., vol. ii, pp. 137-139, 155-159. 1894. 

CartM>niferon& Iowa, liiclwled In Pennsylvanian series. Exactsyn. UpperCoat 
Meatnin.'s. 
Missouri Btaae, Keyes. Mo. (ieol. Surv., vol. iv, pp. ;i0, 82. 1894. 

Oarl ion iferous. Missouri. Exact syn. Upper Coat Measures of Missouri. 
Missouri stt^^, Lonsilalu. Iowa Geol. Surv,, vol. iv, pp.391-411. 1895. 

Carl)oniferi)us. Iowa. Exutrtsyn. Up|ierCoal Measures. 
Missouriaii series, Wlieeier. Mo. Geol. Surv., vol. xi, p. 46. 1896. 

Upper Carboniferous, Mis-iciuri. Ineludes Ui)per Coal Measures. 
Missourian formation, itain, Iowa Geol. Surv., vol. vii, pp. 446-451, 1897. 

Carboniferous. Iowa. 

tion, Tilton and Biun. Iowa Geol. Surv., vol. vii, pp. 50H-520. 



ir.i. Iowa Geol. Surv., vol, v, pp. 82-83, 1898. 

It, Mo. Geol. Surv., vol. sii, pt, ii, pp. 31, 210, 268. : 
eroua. Missouri, Included in UpjHir Coal Measures. 
;l Leonanl. Jour, of Geol., vol. vi, pp. 577-588, 1898. 
Mississippi Valley. 



WEEK8.1 MISSISSIPPI MOMABLE. 273 

Missourian series, Keyes. Am. Geol., vol. xxiii, pp. 298-316. 1899. 
Carboniferous. Mississippi Valley. Includes Cottonwood limestone, Atchison 
shale, Forbes limestone, Platte shale, Plattsmouth limestone, Lawrence shale, 
Plattsbur^ limestone, Parkville shale, lola limestone, Thayer shale, and Beth- 
any limestone. 
Mitch.ell limestone, Hopkins and Siebenthal. Indiana Dept. Geol. and Nat. Res., 
21st Ann. Kept., 1896, pp. 296, 298. 1877. 
Carboniferous. Indiana. 
Mitchell limestone, Blatchley and Ashley. Indiana Dept. Geol. and Nat. Res., 22d 
Ann. Rept., 1897, pp. 16, 21. 1898. 
Carboniferous. Indiana. 
Mitchell limestone, Ashley. Indiana Dept. Geol. and Nat. Res., 23d Ann. Rept., 
1898, pp. 74,79. 1899. 
Carboniferous. Indiana. 
Moberly sandstone, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, pp. 323, 324, 331-332, 
350. 1898. 
Upper Carboniferous. Missouri. Included in Pennsylvanian. Exact syn. Middle 
Coal Measures. 
Mobile, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain of 
Ala., p. 47. 1894. 
Pleistocene. Alabama. Exact syn. Estuarine or Transition formation. 
Moccasin limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
12, 26. 1894, 1896. 
Silurian. Kentucky, Virginia, and Tennessee. 
Moccasin limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 27. 
1896. 
Silurian. Tennessee. 
Moccasin limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Silurian. Virginia, and West Virginia. 
Moccasin limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 39. 
1899. 
Silurian. Virginia, and Tennessee. 
Modtiria limestone series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., 1890-91. 
1891. 
Ordovician. Georgia. Exact syn. Chickamauga limestone. 
Moliawk limestone, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., pp. 363-364, 370. 
1840. 
Silurian. New York. 
Mohawk slate, Mather. N. Y. Geol. Surv., 5th Ann. Rept., pp. 92-94, 98-101. 1841. 

Silurian. New York. Included in Hudson slate series. 
Mohawk, Conard. Phil. Acad. Nat. Sci. Jour., vol. viii, pp. 230, 233-234. 1842. 

Ordovician. 
Mohawk limestone, Mather. Geol. of N. Y., pt. i, pp. 402-406. 1843. 

Paleozoic. New York. Included in Black River limestone. 
Mohawkian, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 
Silurian. New York. Includes Lowville limestone, Black River limestone, and 
ton limestone. 
Mohegran bluff beds, Woodworth. Geol. Soc. Am., Bull., vol. viii, p. 210. 1897. 

Pleistocene. Rhode Island. Included in Columbia. Exact syn. Tishbury beds. 
Mojave formation. Smith. Jour, of Geol., vol. viii, pp. 455-456. 1900. 

Tertiary. California. Included in Eocene. 
Momable slates, Walcott. Geol. Soc. Am., Bull., vol. x, p. 219. 1899, 
Algonkian. New Foundland. Included in Avalon terrane. 

Bull. 191—02 IS 



274 NORTH AMERICAN GEOLOGIC FORMATION NAMES. fBCLL.19L 

Mona whiHt, Van Hise and Bay ley. tJ. S. Geol. Surv., 15th Ann. Rept, p. 490. 
1895. 
An'hoan. I^ke Superior rejjion. Exact syn. Kitchi fonnation. 
Mona HfhistH, Bayley. V. S. (ieol. Surv., Mon., vol. xxviii, pp. 152-159. 1897. 

Arehean. Michijran. I ncludcnl in Bafleinent complex. 
Monarch f«>rnmtion, Wecnl. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Na«^. 55, 
56. ] 899. 
Devonian and Silurian. Montana. Part. syns. Jefferson limestone and Three 
Forks fonnation. 
Monclova sandstone, Ortf)n. Ohio (Jeol. Surv., 3d Organization, Ist Ann. Rept, 
p. 24. 181H). 
Silurian. Ohio. Kxact syn. Sylvan ia sandstone. 
Moneague, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, p. 75. 1899. 

Tertiarv. Janiai<*a. I ndudtHl in Oceanic series. 
Monmouth formation, Clark. Md. Geol. Surv., vol. i, pp. 156, 193-194. 1897. 

Cretaceous. Maryland. 
Monmouth formation, Clark, Bagg and Shattuck. N. J. (leol.. Surv., Rept, 1897, 
pp. 180-186. 1898. 
CretaccH)us. New Jersey. Included in Upper Cretaceous. Includes Mount Laurel 
sands, Navesink marls, and Re<ll>ank sands. 
Monmouth formation, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, 
p]>. 315, 331. 1897. 
(/retaceous. New Jersey. Included in Upper Cretaceous. Includes Mount Laurel 
sjinds, Navesink marls, and Redbank sands. 
Monongahela series, Rogers, (ieol. Surv. of Pa.. 4th Ann. Rept, p. 150. 1840. 
Monongahela series, Piatt. 2d Pa. (leol. Surv., Rept. JI. pp. 5-8. 1875. 
Monongahela River series, Stevenson. Am. Phil. Soc, Trans., vol. xv, pp. 17-27. 
1873. 
("arboniferous. West Virginia. Includes Pittsburg limestone and sandstone. 
Monongahela River series, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept, 1886, 
]>p. 63-<)4, 206-208, 264-265, 2<U-2^)5, 336-341. 1887. 
Carboniferous. Pennsylvania. Exact syn. Upper Productive Measures. 
Mcmongahela River series, White. U. S. Geol. Surv., Bull. No. 65, p. 43. 1891. 
Carboniferous. Pennsylvania, West Virginia, and Ohio. Included in Upper Coal 
Measures. Includes Brovvntown sandstone, Waynesburg limestone. Union- 
town sandstone and limestone, Sewickley sandstone and limestone, Redstone 
limestone, and Pittsburg sandstone. 
Monongahela River series, D'Invilliers. 2d Pa. (leol. Surv. , Final Rept, vol. iii, 
pt. ii, p|). 2448-2564. 1895. 
Carboniferous. Pennsylvania. Exact syn. No. xv, or Upper Productive series. 
Monongahela River Coal series. White. W. Va. (leoI. Surv., vol. i, p. 199. 1899. 

Carboniferous. West Virginia. 
Monongahela formation, O'llarra. Md. Geol. Surv., Allegany County, p. 124. 1900. 

Carboniferous. Marvland. 
Monroe l)eds. Lane. Mich. (ieol. Surv., Rei)t. State Board, 1891-92, p. 66. 1893. 

Upper Silurian. Michigan. 
Monroe shale, Darton. Geol. Soc. Am., Bull., vol. viii, pp. 367, 373. 1894. 

Devonian. New York. 
Monroe beds, I^ne. III. Geol. Surv., vol. v, pt. ii, p. 26. 1895. 
Michigan. 

onroe slates, Nitze. Elisha Mitchell Sci. Soc, Jour., pt. ii, 1896, p. 66. 1896. 
Vlgonkian. North Carolina. Included in Lower Paleozoic, 
nroe slate, Nitze and Hanna. N. C. Geol. Surv., Bull. No. 2, pp. 36-37. 1896. 
^Igonkian. North Carolina. 



WEEKS] MONA MONTANA. 275 

Monroe shales, Ries. N. Y. State GeoL, 15th Ann. Rept., vol. i, p. 404. 1897. 

Devonian. New York. 
Monroe, Lane. U. S. Geol. Surv., Water-Supply Papers, No. 30, pi. vi. 1899. 

Silurian. Michigan. Exact syn. Lower Helderberg. 
Monroe beds, Bherzer. Mich. Geol. Surv., vol. vii, pt. i, pp. 43-53, 222-226. 1900. 

Silurian. Michigan. 
Monroe-Harrison limestone, Owen. Rept. Geol. Reconn. Indiana (1859-1860), 
p. 125. 1862. 

Carboniferous. Indiana. Included in Subcarboniferous limestone. 
Monson gneiss, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 41, 56. 1898. 

Cambrian. Massachusetts. Included in Lower Cambrian. 
Mont Alto lignite, Lesley. Am. Jour. Sci., 2d ser., vol. xl, p. 119. 1865. 

Tertiary. Pennsylvania. 
Montalban, Hitchcock. Geol. of N. H., pt. i, p. 522. 1874. 

Eozoic. New Hampshire. 
Montalban, Crosby. Report on (ieol. Map of Massachusetts, pp. 29-40. 1876. 

Massachusetts. 
Montalban group, Hitchcock, (ieol. of N. H., pt. ii, pp. 112-127, 563-573, 600. 1877. 

Kozoic. New Hampshire. 
Montalban series, Huntington, (ieol. of N. H., pt. ii, pp. 410-411. 1877. 

Eozoic. New Hampshire. 
Montalban, Hitchcock. Am. Mus. Nat. Hist., Bull., vol. i, No. 5, p. 167. 1884. 

Archean. 
Montalban, Hunt. Smithsonian Inst. Ann. Rept., 1882, p. 336. 1884. 

Archean. North America. Part. syn. Terranovan. 
Montalban, Whitney and Wadsworth. Harvard Coll. Mus. Com]>. Zool., Bull., 
vol. vii, 1880-84, p. 561. 1884. 

Included in Azoic svstem. 
Montalban, Crosby. Boston Soc. Nat. Hist., Proc, vol. xxiii, 1884-88, p. 498. 1888. 

Dakota. 
Montalban, Pumpelly. Geol. Soc. Am., Bull., vol. iv, p. 383. 1893. 

Archean (?). Canada(?). 
Montalban gneiss, Crosby and Fuller. Inst, of Tech., Quart., vol. ix, j>. 330. 1896. 

New Hampshire. 
Montana group, Eldridge. Colo. Sci. Sot;., vol. iii, p. 93 (footnote). 1888. 

Cretaceous. Colorado. Includes Fox Hills and Fort Pierre formations. Exact 
syn. Fox Hill. 
Montana, White. U. S. (ieol. Surv., Bull. No. 82, pp. 158, 261. 1891. 

Cretaceous. Rocky Mountains. Include Fox Hills, Fort Pierre. Exact syn. 
RipFey formation. 
Montana, \Vee<l. U. S. Geol. Surv., Bull. No. 10(>, p. 18. 1893. 

Cretaceous. Montana. 
Montana formation. Cannon. Colo? Sci. Soc, Proc, vol. iv, p. 249. 1893. 

Cretac'eous. Colorado. 
Montana, Eldridge. U. S. Geol. Surv., Geol. Atla.s of U. S., Folio No. 9. J894. 

CretaceoUf?. Colorado. Includes Pierre and Fox Hills. 
Montana, Cross. U. S. Geol. Surv., Geol. Atlas of L\^., Folio No. 7. 1894. 

Cretaceous. Colorado. 
Montana, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 1. 
1894. 

Cretaceous. Montana. Includes Pierre and Fox Hills bed.s. 
Montana, Weed. U. S. Geol. Surv., Geol. Atlas of U. 8., Folio No. 30. 1896. 

Cretaceous. Wyoming. Includes Pierre and Fox Hills. 
Montana, Weed and Pirsson. U. 8. (ieol. Surv., Bull. No. 139, p. 47. 1896. 

Cretaceous. Montana. Includes Pierre shale, Fox Hills sandstone^ 



276 NORTH AHEBICAN (lEoLOOIC FORMATION NAMES. [bvll.ml 

MonUiia, Peale. U. S. Oeol. Surv., iieol. Atlas of U. S., Folio No. 24. 1896. 

Cretai-eoiiH. M<>i)lana. 
Montana, Eminona, Cro»« and RldriilKe. U. S. Geol. Surv., Mon., vol. xxvii, pp. 28, 
6fi. IKOe. 

Creta<«ouH. Colorado. Incliidea Pierre, Fox Hilla. 
Montana formation, Spurr. U. S. Geol. Surv., Mon., vol. xxxi, ]>]j. 43-43. laos, 

t^relawons. Colorado. 
Montana formation, Weed. U. S. (!eol. Siirv., (ieol. Allan of II. S., Folio So, 55. 
1809. 

Cretaceous. Montana. 
Montana formation, Iddings and Wi'eil. U. S. (Jeol. Hurv., Mon., vol. xxviii, pL ii, 
pp. 1-59, 14S-164. 1899. 

Cretaceous. Yellowstone Park. 
Montana formation, Hague. U. S. Geol. Purv., Geol, Atlas of U. S., Folio No. 52. 
1899. 

Cretaceous. Wyoming. 
Montana formation, Knowlton. U. S. (ieol. Rurv., Bull. No. 163, pp. 1-11. ISOO. 

Crclaceous. Wyoming, Utah, and Montana. I'art. syn. Belly River series. 
Uonte de Oro formation, Turner. U. S. Geol. Surv., I7th Ann. Rept., pt. i, p. 5J8. 
1R96. 

JuratriHH. California, Incluiled in Ruperjat'ent Keries. 
Houteballo sandstune, Clayfiole. 2d I**, (ieol. Siirv., Re|>t. F", pp. 67-e«, isai, 

Devonian, Pennsylvania. lnoln<leil in Hamilton. 
Hontego formation, Hill. Harvard Coll. Mus. Comp. Zool., Bull., vol. xxxiv, 
p, 102, 1899. ■ 

Pleistocene, Jamaica. Inchideil in Coastal series. 
Uonterey, Elate. Phil. -A.cad. Nat. Sci., Proe., vol. vii, pp. 328-331. 185«. 

Tertiary. California. 
Monterey sandstone, Darton. Am. Geol,, vol. x, p. 15. 189^, 

Silurian. Virginia, Part, syn. Oriskany. 
Monterey series, Lawson. Univ. Cal., Dept. of Geol., Bull , vol. i, pp. 1-69. ISfll 

Miocene. California. 
Monterey series, Ashley. Jour, of Geol,, vol. iii, pp. 439, 441. 1895. 

Tertiary, California. Included in Miocene. 
Monterey sandstone, Darton. V. S. Geol. Surv., Geol. AiIbb of U. S., Folios Nos. 14, 
32. 1894, 1896. 

Devonian. Virginia, West Virginia, Exai-t syns. Oriskany, Rogers No, vii, and 

Monterey sandstone, Darton. U. S. Geol. Snrv., Geol. Atlas of U. S., Folio No. 28. 
1896. 
Devonian. West Virginia and Maryland. 
Monterey series, Asliley. (^1. A.-ad. Sci., Proc, 2d syr., vol. v. |>. 309. 1S%- 

Miocene. California. K.\act syii». While Miocene shale and Bituminous shale. 
Monterey formation, Clark. Md. Geol. Snrv., vol. i, pp. 157, 182-183. 1897. 
Devonian. Maryland. Exact cyn. Oriskany sandstone. 

airbanks. Jonr. of Geol., vol. vi, pp. 661-583. 1898. 
irnia. Includeil in Ixiwer Neocene. 
Md. Geol. Snrv., vol. ii, |ip. 199, 20S. 1898. 
viand. Part syn. Oriskany. 
ie, Daryon. IT. 8. Geol. Surv., Geol. Atlas of l'. i^,. Folio No, 81. 

lia and West Virginia. 

, Smith. Ala. Geol. Snrv., Kepi, on Caliaba coal lield, p. 14K. 



■n 



WEEKS.] MONTANA MONUMENT CREEK. 277 

Montevallo, Walcott. U. S. Geol. Surv., Bull. No. 81, p. 247. 1891. 

Cambrian. Alabama. Exact syn. Connasauga, Choccolocco. 
Montevallo shale and sandstone, McCalley. Ala. Geol. Surv. , Rept. on Valley regions, 
pt. ii, pp. 40-41, 253-254, 310-311, 484, 51 2-514, 575-588, 692-712, 765-767. 1897. 
Cambrian. Alabama. Includes Lower Connesauga and Rome formation. 
Montgromery buhr, Rogers. Rept. on Geol. Surv. of Va., 1837. Geol. of Virginias, 

p. 173. 1884. 
Montgomery grits and coal, Rogers. Macfarlane Ry. Guide, p. 179, 1879. Geol. of 

Virginias, p. 717. '1884. 
Montgomery limestone, Diller. Geol. Spc. Am., Bull., vol. iii, p. 372. 1892. 

Silurian. California. Included in Niagara. 
Montgomery bed, Foerste. Cin. Soc. Nat. Hist., Jour., vol. xviii, Nos. iii, iv, p. 190, 
1896. 
Silurian. Ohio. 
Montpelier sandstone, Keyes. Iowa Geol. Surv., vol. i, pp. 40-46. 1893. 

Devonian. Iowa. 
Montpelier sandstone, Udden. Cin. Soc. Nat. Hist., Jour., vol. xix. No. iii, p. 93. 
1897. 
Devonian. Illinois. 
Montpelier, Hill. Harvard Coll. Mus. of Comp. Zool., Bull., vol. xxxiv, pp. 70-75. 
1899. 
Tertiarv. Jamaica. Included in Oceanic series. 
Montrose sandstone, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., p. 381. 1840. 

Devonian. New York. 
Montrose shale, White. 2d Pa. Geol. Surv., Rept., G^ p. 68. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Montrose shale, White. 2d Pa. Geol Surv., Rept. G«, pp. 98-99. 1882. 

Devonian. Pennsylvania. Included in Catskill. 
Montrose red shale Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1581. 1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 
Montrose shalo, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New York, Pennsylvania. Included in Chemung (Upper Devonian). 
Monument Creek group, Hayden. U. S. Geol. Surv., Prelim, rept., pp. 39, 40. 

1869. Uh S. Geol. & Geog. Surv. of Terr., p. 430. 1873. 
Monument Creek, Cope. U. S. Geol. end Geog. Surv. of Terr., 1873, p. 430, 1874. 

Tertiary. Colorado. Included in Miocene. 
Monument Creek, Hayden. U. S. Geol. and Geog. Expl. of Terr., 1873, p. 32. 1874. 

Tertiary. Colorado. Included in Miocene. 
Monument Creek, Hayden. U. S. Geol. and Geog. Surv. of Terr., 8th Ann. Rept., 
p. 36. 1876. • 
Tertiary. Colorado. Included in Miocene. 
Monument Creek, White. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., 
p. 191. 1879. 
Tertiary. Wyoming, Colorado. Exact syn. White River. Part. syns. W^hsatch, 
and Green River or Bridger(?). 
Monument Creek beds, Eldridge. Colo. Sci. Soc, Proc, vol. iii, p. 99. 1888. 

Tertiary. Colorado. Included in Miocene(?) . 
Monument Creek, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 308. 1892. 

Tertiary. Colorado. 
Monument Creek beds. Cannon. Colo. Sci. Soc, Proc, vol. iv, p. 262. 1893. 

Cretaceous. Colorado. 
MonumentCreek, Emmons, Cross and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, 
pp. 38, 252. 1896. 
Cretaceous. Colorado. 



278 NORTH AMERICAN GEOLOGIC FORMATiON NAMES. [bull.191. 

Moodys Branch beds, Harris. Am. Jour. Sci., 3d ser., vol. xlvii, p. 304. 18M. 

Tertiary. Incladeii in Jackson stage of Eocene. 
Moodys Branch IkmIs, Dall. V. S. (ieol. Surv., 18th Ann., Re])t., pt. ii, p. 342. 1898. 

Tertiary. Missis.-jippi. Included in Jacksonian stage, E(K*ene. 
Moose Island series, Shaler. Am. Jour. Sci., 3d ser., vol. xxxii, p. 54. 1886. 

Devonian. Maine. 
Moose River sandstone, Williams. U. S. Geol. Surv., Bull. No. 165, p. 88. 1900. 

Devonian. Maine. 

I 

Moose Hide grouj>, McDonnell. Can. (ieol. Surv., Rept. on Klondike gold fields, 

pp. 8-9. 1900. Canada. 
Moreau sandstone, Keyt»s. Mo. (ieol. Surv., vol. vi, pp. 331,370, 373, 375. 1894. 

Cambrian. Missouri. Included in (Gasconade limestone, Ozark series. Part, 
syn. Potasi limestone. 
Morgantown sandstone, Piatt. 2d Pa. Geol. Surv., Rept. IP, p. 312. 1878. 

Carboniferous. Pennsylvania. 
Morgantown sandstone. White. U. S. Geol. Surv., Bull. No. 65, p. 88. 1891. 

Carboniferous. Pennsylvania and West Virginia. In(!ludeil in Barren Measures, 
Elk River series. 
Morgantown sandstone, White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Up[)er Carboniferous. West Virginia. Included in Elk River series. 
Mormon sandstone, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Jura.«sic. California. Included in Oolite. 
Mornum sandstone, Hyatt. Geol. Soc. Am., Bull., vol. v, p. 413. 1894. 

Jurassic. California. Included in Lower Oolite. 
Morrison, Cross. U. S. (ieol. Surv., (ieol. Atlas of U. S., Folio No. 7. 1894. 

Juratrias. Colorado. Exact syn. Gunnison. 
Morrison, Emmons, Cross and Eld ridge. U. S. (ieol. Surv., Mon., vol. xxvii, pp. 22. 
60. 1894. 

Juratrias. Colorado. 
Morrison formation, (Jilbert. U. S. (^eol. Surv., (tcoI. Atlas of U. S., Folio No. 36. 
1899. 

Juratrias. Colorado. 
Morrison formation, Hills. U. S. Geol. Surv., (ieol. Atlas of U. S., Folio No. 68. 
1900. 

Juratrias. Colorado. 
Moruga series, Wall and Sawkins. (tcoI. of Trinidad, pp. 45-53. 1860. 

Tertiary. Trinidad. Included in Newer Parian group. 
Moscow shale, Hall. N. Y. (ieol. Surv., 3d Ann. Rept., pp. 298-300. 1839. 

Devonian. New York. 
Moscow shale, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., p. 380. 1840. 

Devonian. New York. 
Moscow shale. Hall. N. Y. (ieol. Surv., 5th Ann Rept., pp. 163-164. 1841. 

New York. 
Moscow shales, Hall. Am. Jour. Sci., 1st ser., vol. xlii, p. 57. 1842. . 

New York. Included in Ludlowville group. 
Mo:^cow shale, Hall. (ieol. of New York, pt. iv, 4th Geol. Dist., pp. 18, 187. 1843. 

Paleozoic. New York. Inchided in Hamilton group. 
Moscow shale, Emmons. Agric. of N. Y., vol. i, p. 188. 1846. 

Devonian. New York. Exact syn. Hamilton group. 

'oscow shales, Grabau. Buff. Soc. Nat. Hist., Bull., vol. vi, pp. 16-19. 1898. 

"Devonian. New York. 

bt Haven limestone, Dana. Am. Jour. Sci., 3d ser., vol. xxi, p. 432. 1881. 
ew York. 



WEEKS] MOODYS BRANCH ^MOUNT 8\ND. 279 

Mottled limestone, Upper, Dowling. Ottawa Field Nat. Club, Trans., 1895-96, 
vol. xi, pp. 70-72. 1895-96. 
Cambro-Silurian. Canada. 
Mottled limestone. Lower, Dowling. Ottawa Field Nat. Club, Trans., 1895-96, 
vol. xi, pp. 68-69. 1895-96. 
Cambro-Silurian. Canada. 
Mound limestones, Percival. Wis. Geol. 8urv., 1856, pp. 2.% a5-70. ia56. 

Silurian. Wisconsin. Part. syn. Niagara limestone. 
Mound Valley limestone, Adams. Kan. Univ. Geol. Surv., vol. i, j>. 23. 1896. 

Carboniferous. 
Mound Valley shales, Haworth. Kan. Univ. Geol. Surv., vol. iii. pp.47, 102. 1898. 

Carboniferous. Kansas. 
Mound Valley limestone, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 47, 102. 
1898. 
Carboniferous. Kansas. 
Mount Holly conglomerate, Lewis. Phil. A(»d. Nat. Sci., Proc., vol. xxxii, p. 271. 
1880. 
Tertiary. New Jersey. Included in Miocene (?). Part. syn. Bryn Mawr gravel. 
Mount Holly series, Whittle. Jour, of Geol., vol. ii, pp. 414-417. 1894. 

Algonkian. Vermont. 
Mount Liaurel sands, Clark, Bagg and Shattuck. (leol. Soc. Am., Bull., vol. viii, 
pp. 315, 333. 1897. 
Cretaceous. New Jersey. Included in Monmouth formation. 
Mount Laurel sands, Clark, Bagg and Shattuck. N. J. Geol. Surv., Kept., 1897, 
p. 183. 1898. 
Cretaceous. New Jersev. Included in Monmouth formation. 
Mount Mesnard quartzite, Wadsworth. Mich. Geol. Surv., Kept. State Board, 
1891, 1892, pp. 64, 65. 1893. 
Azoic or Archean. Michigan. 
Mount Morris limestone. White. U. S. Geol. Surv., Bull. No. a5, \\ 39. 1891. 
Carboniferous. Pennsylvania. Included in Permo-Carboniferous, Dnnkard Creek 
series. 
Mount Pleasant shale. White. 2d Pa. Geol. Surv., Rept. (^^ p. 63. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Mount Pleasant conglomerate, White. 2d Pa. Geol. Surv., Rept. (i^, p. 58. 1881. 

Carboniferous. Pennsylvania. lnclude<l in Pocono. 
Mount Pleasant conglomerate. White. 2d Pa. Geol. Surv., Rept. G*, pp. 89-91. 
1882. 
Carboniferous. Pennsylvania. Included in Pocono. 
Mount Pleasant shale. White. 2d Pa. Geol. Surv., Rept. G«, pp. 94-95. 1882. 

Devonian. Pennsylvania. Included in Catskill. 
Mount Pleasant red shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1579. 
1892. 
Devonian. Pennsylvania. IncludtMl in Catskill, No. ix. 
Mount Pleasant conglomerate, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Carboniferous. New York, Pennsvlvania. Included in Pocono. 
Mount Pleasant shale, Prosser. U. S. Geol. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. New \ork, Pennsylvania. Included in Catskill (Upper Devonian). 
Mount Pleasant conglomerate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, 
p. 1649. 1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Mount Sand series, Carll. 2d Pa. Geol. Surv., Rept. I^ pp. 81-90. 1880. 
Carboniferous. Northwest Pennsylvania. 



280 NORTH AMERICAN OfiOLO^IC FoAMATJOK KAME8. iBULL.M. 

Xount Selman beds, Dumble. Texas Geol. Surv., Rept. on Brown Coal, pp. 140- 
141. 1892. 
Tertiary. Texas. Included in Timber-belt division of Eocene. 
Mount Selman series, Kennedy. Texas Geol. Surv., 3d Ann. Rept., pp. 52-54. 1892. 

Tertiary. Texas. Included in Timber-belt beds of Eocene. 
Mount Toby conglomerate, Emerson. Geol. Soc. Am., Bull., vol. ii, p. 452. 1891. 

Trias. Massachusetts. 
Mount Toby conglomerate, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 6. 1895. 

Trias. Massachusetts. 
Mount Toby conglomerate, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 358- 
364. 1898. 
Juratrias. Massa^jhusetts. Included in Connecticut River sandstone. 
Mount Toby conglomerate, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 50, 1898. 
Juratrias. Massachusetts. 
Mount Vernon series, Wanl. U. S. Geol. Surv., 15th Ann. Rept, p. 324. 1895. 

Cretatvous. Virginia. Included in Potomac. 
Mount Washington series. Hobs. Jour, of Geol., vol. i, p. 725. 1893. 
Silurian. Massachusetts. Included in Ortlovician. Includes Canaan dolomite, 
Riga schist, Egremont limestone, and Everett schist. 
Mountain limestone, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., p. 91. 
1855. 
CarlK)niferouH. Missouri. Included in Lower Carboniferous. Includes Ferru- 
ginous sandstone, Archimedes, St. Louis, and Encrinital limestone. Exact 
syn. Carboniferous limestone. 
Mountain limestone, Safford. Geol. Reconn. of the State of Tenn., Ist Rept, pp. 160- 
Itil. 185(>. 
Carboniferous. Tennessee. 
Mountain limestone, Saffonl. Geol. of Tenn., pp. 351-365. 1869. 
CarlK>niferous. Tenne^^si^e. Included in Lower Carboniferous. Part syn. Kas- 
kaskia or Chester limestone. 
Mountain limestone, Shumanl. Mo. Geol. Surv., Rept., 1855-1871, p. 319. 1873. 
Carlnmiferous. Missouri. Includeil in Lower Carboniferous. Includes Ferru- 
ginous sandstone, St. Ixniis limestone, and Archimeiles limestone. 
Mountain limestone, Killebrew and Safford. Resoun*es of Tenn., p. 41. 1874. 

OarlH>nifen>us. TennesstH\ Included in Lower Carl)oniferous period. 
Mountain limestone. Smith. .\la. Geol. Surv., Rept., 1875, p. 26. 1876. 

Carlx^niferiMis. Alalwma. lui-hided in Subi«rlK>niferous. 
Mountain linn^tone, Piatt. 2d l*a. iiei>l. Surv., Rept. H*, p. 309. 1878. 

Carlx^niterous. Pennsylvania. Exact syn. No. xi. 
Mountain linu^tone, Stevenson. Am. Phil. Six\, Proc., vol. xix, pp. 230, 241, 258. 
L<81. 
CarK^niterous. Vinrinia. Includt^l in I><^wer CarK^niferous. 
Mountain linu^tone iinmp, Slevi^n^Jon, The Virsrinias, vt>l, ii, p. 25. 1881. 

CarK^niienms. Viniinia. 
Mountain limestone, Linn and Linton. 2d Pa. Geol. Surv., Ann. Re|>t,, 1885.pp.222- 

CarU>ni:Vn »u<. Pennsylvania. 
Mountain lv«L Taff. Texas GtH>l, Surv., 2il Aim. Rept,, pp. 730-731. 189L 
rretaeeous, Texas. Inciude^l in Washita division, 
mtain limestr.ne, S[»t*ni^r. iia, Get^l. Sur\\, The Palet»Koio Group, p. 52. 1893. 
rbonifeix»r.s. Gec»r^ia. Includeil in Lower CarK»niiei\>us. 



WEEK8.J MoaNt SELMaK — NANAIMO. 281 

Moimtain limestone, Gibson. Ala. Geol. Surv., Geol. Structure of Murphrees Valley, 
pp. 20, 93. 1893. 
Carboniferous. Alabama. Included in Subcarboniferous. Exact syn. Bangor. 
Mountain limestone, Lesley. 2d Pa. Geol. Surv., Final Kept, vol. iii, pt. i, pp. 1789- 
1805. 1895. 
Carboniferous. " Pennsylvania. Included in Nos. x-xi. 
Murray shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 1895. 

Cambrian. Tennessee. Included in Chilhowee series. 
Murray shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25. 
1895, 1896. 
Cambrian. Tennessee, North Carolina. 
Muskingum conglomerate, Lesley. Manual of Coal, p. 105. 1856. 
Mussel-bearing clays, Pilsbry. Phil. Acad. Nat. Sci. , Proc. , 189Q, pp. 567-570. 1896. 
Pleistocene. New Jersev. 

at 

Myrick formation, Vaughan. U; S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 

Tertiary. Texas. Included in Eocene. 
Myrtle formation, Diller. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 49. 1898. 

Cretaceous. Oregon. 
Mytilus beds, Dall. U. S. Geol. Surv., 18th Ann. Kept., pt. ii, p. 336. 1898. 

Tertiary. Oregon. Included in Pliocene. 
Naheola, Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 57. 1887. 

Tertiary. Alabama. Included in Lower Eocene, Lignitic. 
Naheola, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 596. 1891. 

Tertiary. Alabama. Included in Lower Eocene. 
Naheola, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain 
of Ala., pp. 181, 239, 410, 489. 1894. 

Tertiary. Alabama. Included in Eocene lignitic. P^xact syn. Matthews Landing 
series. 
Naknek series, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 169-171, 
179. 1900. 

Juratrias. Alaska. 
Nampa beds, Emmons. Boston Soc. Nat. Hist., Proc., vol. xxiv, 1888-1890, p. 432. 

1890. 
Nanafalia group, Aldrich. Ala. Geol. Surv., Bull. No. 1, p. 58. 1886. 

Tertiarv. Alabama. 
Nanafalia series. Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 51. 1887. 

Tertiary. Alabama. Included in Lignitic, Lower Eocene. Includes Coal Bluff 
lignite. 
Nanafalia division, Spencer. Ga. Geol. Surv., Ist Rept. of Prog., p. 46. 1891. 

Tertiary. Georgia. Include<i in Eocene. 
Nanafalia series, Langdon. Ga. Geol. Surv., Ist Rept. of Prog., p. 95. 1891. 

Tertiary. Georgia. 
Nanafalia, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 596. 1891. 

Tertiary. Alabama. Includetl in Lower Eocene. 
Nanafalia, Smith. Ala. Geol. Surv., Bull. No. 2, pp. 52, 61, 71. 1892. 

Tertiary. Alabama. Included in Lignitic. 
Nanafalia, Smith, Johnson, and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain 
of Ala., pp. 170, 238, 403, 490, 494. 1894. 

Tertiary. Alabama. Included in Eocene Lignitic. Includes Coal Bluff lignite. 
Nanafalia series, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 346. 1898. 

Tertiary. Alabama. Included in P^ocene. 
Kanaimo group, Dawson. Am. Jour. Sci., 3d ser., vol. xxxix, pp. 181-183. 1890. 

Cretaceous. British Columbia. Exact syn. Vancouver group. 



282 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bcilim. 

Nanumo, White. I' R Ceol «un Bull \o 82, p. 195, 1891. 

Crvtsuxtme. l*aoifiL Coafl incluiled iti U|>iM.'r Cretaoeous. 
Nansimo Ix^s, StaiiUin dtNil Sic Am Ball , vol. iv, p. 245. 1833. 

Cretaceow!. British (-iiluiiiliia IiiJuilol iti Chico. 
Nanaimo group, Uiller an I Stanton <.eol Sot.. Am., Bull., vol. v, ^. 461. 18<M. 

Cretaceous. British Columbia F^art Hyn Chico. 
Nanaimo f^up. Dan-ron Can Kt \ Sh Trans., 1895, new eer., vol. i. see. iv, 
pp. 137-141. lR9'i 
CretaceotiH. Britinh Ciiluml)ia Ini ln<le<1 ni Upper Cretai'eouH. Part, hjti. Chico 
of ('atidirnia. 
Naparima marl, Wall anil Sawkins. 4ii>o[. oF Triniilad, pp. .te-.tT. I860. 

Tertiary. Triniilail. Incluiletl in Newer Parian group. 
Naparima l>e<U, Dall. U. 1^. Geol. Surv., 18th Ann. R«pt., pt. ii, p. 341. 1898. 

Tertiary. Trinlilwl, Went Indies. 
Naparimaniarl, J uki-o- Browne. Ixincl. Geol. Koc, Quart. Jour., vol. Iv, pp. 177-181, 
18«9. 
Tertiary. Triniila'). 
Naparinia marl, Harrison. Ivtrnl. <ieol.Soc.,Quarl. Jour., vol.lv, pp. 181-189. 18!KI, 

Tertiary. Trinidad. Incluileil in Miocene. 
Naples hiack and gray shak*, lirabau. BuB. Siic. Nat. Hist., Bull., vol. vi, pp.5-a. 
1898. 
Devonian. New York. Kxact Hyna. (iardeau shale, an<l Coahaqua shales. 
Napoleon HandHtiine. Taylor. Kept. Com. on t^lines relative U> the Saline Rewiurces 
of StaU' of .Michigan, p. 3. 18.19. 
Miijhijran. 
Napoleon gn>iip, Winchell. Mich. Geol. Surv., Ist Bien. Kept. Prt^., pp. 88, 139, 
1861. 
Carbtiniferous, Michigan. 
Napoleon aantUtone, I.Ane. Mich. Geol, Surv., vol. vii, pt. ii, p. 18. 1900. 

Carboniferous. MiehJKan, Kxai;t syn. Upper Marehall. 
Nariva Heries, Wall and Sawkins. Geol. of Trinidad, pp. 35-36, 1860. 

Tertiary. TrinidwI. Included in Newer Parian group. 
Nariva series, Harrison. I^ondon Geol, Soc., Quart. Jour,, vol. Iv, pp. 187-189. 
1899. 
Tertiary. Trinidad. Included in Eocene. 
Nashaquitaa Heriei<, Shaler. U. S. Geol. Siirv., ISth Ann. Kept., pi. ii, pp. 536-539. 
1898. 
Tertiary, Massachusetts, Included in Cape Ctxt series. 
KaahviUe liecU, Safford. Am. Jour. Sci., 2d ser., vol, xii, p. 356. 1851. 

Silurian. Tennessee. Inchides Ij>wer and Upper beds. 
Nashville gronp, Safford. Am. Jour. Sci., 2d ser, vol. xii, p. 356. 1851. 
Silurian. Teimfs.ie«'. Includes siliceous, limestone, Lower Nashville beds, and 
Up|>er Nashville beiU. 
Nashville, Sattonl. Am. Aswm-, Adv. Si-i., Proc.. vol. vii, p. 153. 1853. 
Silurian. TcnncwM^e. Exact syns. Hudson Kiver, Utica, and Trenton. 

>rd. (Jeol, Reconn. in the State of Tenn., 1st Kept., p- 155, 

Includ<-d in Central limestone and shale group. Part. 
■er, Trenton, and Up|>er Trenton of New York. 
j|. ot Tenn. by Safford, pp. 268-290. 1869. 

Included in Lower Silurian. Includes Upper ineniber, 
Orthis lied. Exact syn. Hudson Kiver(?). 
RToup, Kiilebrew and Safford, Resources of Tenn., pp. 33-^7. 

Included iiiTrenlnii pi'rioil. 



• 



WEEKS] NANATMO NEELEYTOWN. 283 

Nashville group, Walcott. Geol. Soe. Am., Bull., vol. i, p. 342. 1889. 

Silurian. Tennessee. Exact syn. Hudson River. 
Nashville limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. 
Nashville slate, Spencer. Ga. Geol. Surv., Ist Rept. of Prog., p. 112. 1891. 

Silurian. Georgia. Exact syn. Rockmart slate. 
Nasina series. Brooks. U. S. Geo). Surv., 20th Ann. Rept., pt. vii, pp. 465-467, 
478. 1900. 

Alaska. 
Natick arkose, Shaler, Wood worth and Foerste. U. S. Geol. Surv., Mon., vol. xxxiii, 
pp. 375-378. 1899. 

Carboniferous. Rhode Island. 
Navarro beds, Shumard. Boston Soc. Nat. Hist., Pro(\, vol. viii, 1861-62, p. 189. 
1861. 

Cretaceous. Texas. 
Navarro beds, Hill. Am. Jour. Sci., 3d ser., vol. xxxiii, p. 298. 1887. 

Cretaceous. Texas. Included in Gulf series. 
Navarro beds. White. Phil. Acad. Nat. Sci., Proc, 1887, p. 40. 1887. 

Cretaceous. Texas. Included in Gulf series. Exact syns. Ripley of Mississippi 
and Fox Hills of Western States. 
Navarro beds, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 383. 1895. 

Cretaceous. Texas. Included in Upjier Cretaceoun, Ripley. Exact syn. 
Glauconitic. 
Navasota beds, Kennedy. Texas Geol. Surv., 4th Ann. Rept., pp. 9-15, 43-44. 
1893. 

Tertiary (?). Texas. Includes Upper and Lower divisions. 
Navesink, Clark. N. J. Geol. Surv., Rept., 1893, pp. 336-337. 1894. 

Cretaceous. New Jersey. Exact syn. I^wer marl bed, 
Navesink formation, Clark. Jour, of Geol., vol. ii, pp. 164-165. 1894. 
• Cretaceous. New Jersey. Exact syn. Lower marl bed. 
Navesink formation, Clark. Geol. Soc. Am., Bull., vol. vi, p. 479. 1895. 

Cretaceous. New Jersey. Include;^ Lower marl bed. 
Navesink formation, Shattuck. Johns Hopkins Univ. Cin-., vol. xv, p. 15. 1895. 

Cretaceous. New Jersey. Exact syn. Lower marl bed. 
Navesink, Darton. U. S. Geol. Surv., Bull. No. 138, p. 40. 1896. 

Cretaceous. New Jersey. Exact syn. Lower marl. 
Navesink marl, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, pp. 315, 
334. 1897. 

Cretaceous. New Jersey. Included in Monmouth formation. 
Navesink marls, Clark, Bagg and Shattuck. N. J. Geol. Surv., Rept., 1897, pp. 183- 
184. 1898. 

Cretaceous. New Jersey. Included in Monmouth formation. 
Nebo sandstone, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 1895. 

Cambrian. Tennessee. Included in Chilhowee series. 
Nebo sandstone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., FoHuh Nos. 16, 25. 
1895, 1896. 

Cambrian. Tennessee, North Carolina. 
Nebraska, Scott. Geol. Soc. Am., Bull., vol. v, p. 595. 1894. 

Tertiary. Nebraska. Included in Loup Fork, Upper Miocene. 
Necedah quartzite, Irving. Geol. of Wis., vol. ii, p. 523. 1877. 

Archean. Wisconsin. 
Nechacco series, Dawson. Can. Geol. Surv., Rept., 1876-77, pp. 72, 90. 1878. 

British Columbia. 
Neeleytown limestone, Ries. N. Y. State (tcoI., 15th Ann. Rept., vol. i, p. 442. 1897. 

Silurian. New York. 



284 NORTH AMEBICAN OKOLOOIC FORICATION NAMES. [buja-IOI. 

Kewaunee formation, Wailpworth. Mich. Geol. Sarv., Kept. State Board far 1891, 
1892, pp. ♦>*>, m. \S\rX 

Azoic <»r An-h«in. Mit-higan. 
Negaunei*, Van Hisi». (Jeol. iSoc. Am. Bull., vol. v, p. 6. 1H93. 

Archt^an. Michi^nm. Included in Marquette. 
Negaunee formation, Smyth. V. S. (leol. Surv., 15th Ann. Rept,, p. 611. 1895. 

Al«j:i>nkian. Lake Superior rejrion. Indaded in Lower Marquette series. 
Nejraunee formation, Van Hine and Bayley. V. S. (Teol, Surv., 15th Ann. Rept., 
p. 561. isai. 

Al^mkian. Lake Superior rejnon. Included in Lower Marquette series. 
Negaunei* formation, Smyth. V. S. (Jeol. Surv., Mon., vol. xx^^^l, pp. 529-532. 1897. 

Alg.»nkian. Michigan. Include*! in Lower Marquette series. 
Negaunee fonnation, Van Hise. U. S. iJeol. Surv., Mon., vol. xxviii, pp. 328—406. 
1897. 

Algonkian. Michigan. Include*! in Lower Manjuette series. 
Negaunee formaticm. Van Hii?e and Bayley. U. S. Geol. Surv., Geol. Atlas of LT. S., 
Folio No. 62. 1900. 

Algonkian. Michigan. Include*! in Lower Menominee series. 
Nehant limes^tone. Sears. Es^^ex Inst., Bull., vol. xxii, p. 32. 1890. 

Cambrian. Massachui^ett:?. Exact syns. Glenellus, Lower Cambrian. 
NeilLfurt (juartzite, VVee«l. V. S. (ieoL, Surw, Geol. Atlasof L'. S., Folio No. 56. 1899. 
. Algonkian. Mimtana. 

Neihart quartzite an<l Handwtone, Walcott. Geol. Soc. Am., ^ulL, vol. x, pp. 199, 
204. 1899. 

Pre-Cambrian. Montana. Incljide<l in Belt terrane. 
Neihart quartzitc, Weetl. V. S. (ieol. Siir\'., 20th Ann. Rept,, pt. iii, p. 281. 1900. 

Algonkian. Montana. Includetl in Belt terrane. 
Neocomian nhales, Cragin. VVai*hbuni Coll. Lab. Nat, Hist., 3nll., vol. ii, pp. 69-80. 
1890. 

( 'retaceous. Kant^as. 
NtMK-oniian, Cragin. Am. (ieol., vol. vii, p. 23. 1891. 

Crcta«^>us. Kansas. 
Neodesha sandstone, Hay. Kan. Acatl. Si*i., Trans., vol. x, p. 7. 1887. 

Carl>4>nifernns. Kansas. 
Neosho formation, Prosser. Jour. t)f (ieol., vol. iii, pp. 764-771. 1895. 

Pernio Carlioniferous. Kansas. 
Nciisho formation, Prosser. Kan. Univ. (^uart., vol. vi, pp. 152-157, 164. 1896. 

CarVx>niferoii«. Kansas. lnclu<le<l in Permian. 
Ne<>sbo shales, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 7. 1896. 

Permian. Kansas. Inclu<le«l in Big Blue series. 
Nc*>sho formation, Bee<le. Kan. Univ. Quart., vol. ix, p. 195. 1900. 

CarlKiniferous. Kansas. 
Nerinaea flags, Hill. Wash. Biol. S<x*., Proi\, vol. viii, p. 15. 1893. 

Creta<-coiis. Texas. Include<l in Glen Rose be<ls. Trinity division. Exact syn. 
Top of < ilen Rose IxmIs. 
Neudeckian ntatrc, Upham. Am. Geol., vol. xvi, p. 104. 1895. 

Pleist<^H-<*ne. Inclu<le<l in Champlain e|>o<'h. 
Nevada limc.^one, Hague. U. S. Geol. Surv., ;id Ann. Rept., pp. 253, 263-266. 18S3. 

' ^*i von ian . Nevada. 

fla limt-stone, Hague. I'. S. (ieol. Surv., Mon., vol. xx, p. 63. 1892. 

onian. Nevada. 

^bany black slate, Borden. Indiana Geol. Surv., 5th Ann. Bept, 1873, 

pp. 150. 152, ir)S, 172. 1874. 

>niaa. wk liana. 



r. WEEKS.] NEGAUNEE — NEW RED. 285 

• New Albany black shale, Cox. Indiana Geol. Surv., 6th Ann. Rept., 1874, pp. 11, 
13, 44. 1875. 
Devonian. Indiana. 
New Albany black shale, Borden. Indiana Geol. Surv., 6th Ann. Rept., 1874, 
pp. 122, 123, 146. 1875. 
' New Albany black shale, Borden. Indiana Geol. Surv., 7th Ann. Rept., 1875, 
pp. 148, 169. 1876. 
Devonian. Indiana. Exact svn. Genesee shale of New York. 
New Albany black shale, Thompson. Indiana Dept. Geol. and Nat. Hist., 15th Ann. 
Rept, 1886, p. 17. 1886. 
Devonian. Indiana. 
New Albany black slate, Duden. Indiana Dept Geol. and Nat Res., 21st Ann. Rept, 

1896, p. 108. 1896. 
Indiana. 

New Albany black shale, Blatchley and Ashley. Indiana Dept. Geol. and Nat Res., 
22d Ann. Rept., 1897, pp. 16, 17. 1898. 
Devonian. Indiana. 
New Albany shale. Kindle. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept, 

1897, p. 408. 1898. 
Devonian. Indiana. 

New Albany black shale, Kindle. Am. Pal., Bull. No. 12, pp. 7, 110-111. 1899. 

Devonian. Indiana. 
New Albany bla(rk shale, Ashley. Indiana Dept. Geol. and Nat. Res., 23d Ann. 
Rept., 1898, pp. 74, 78. 1899. 
Devonian. Indiana. 
Ne'w Glasg'ow conglomerate, Fletcher and Faribault. Can. Geol. Surv., new ser., 
vol. ii, pp. 93P-94P. 1887. 
Carboniferous. Nova Scotia. Included in Permian. 
New Glasgow conglomerate, Fletcher. Can. Geol. Surv., n«w ser., vol. v, pt ii, 
pp. 109P-120P. 1893. 
Carboniferous. Nova Scotia. Included in Permian. 
New Glasgow conglomerate, Poole. Nov. Scot. Inst, Proc. and Trans., 1890-1894, 
vol. viii, pp. 273-280. 1895. 
Carboniferous. Nova Scotia. Included in Permian. 
New Glasgow conglomerate, Ami. Brit. Assoc. Adv. S(;i., Rept, 1899, p. 756. 1899. 
Carboniferous. Nova Scotia. 

I 

New Glasgow formation. Ami. Can. Rec. Sci., vol. viii, pp. 162-163. 1900. 

Carboniferous. Canada. Included in Neo-Carboniferous. 
New Milford group. White. 2d Pa. (ieol. Surv., Rept. G^ pp. 68-70. 1881. 

Devonian. Pennsvlvania. Included in Cat*<kill. 
New Milford shale, White. 2d Pa. (ieol. Surv., Rept. (;«, pp. 101-102. 1882. 
[ Carboniferous. Penhsylvania. Included in Catskill. 

New Milford sandstone. Lesley. 2d Pa. Geol. Surv., Final Rept, vol. ii, pp. 1581- 
1582. 1892. 
Devonian. Pennsylvania. Included in Catskill, No. ix. 
New Milford shale, Prosser. U. S. Ge^jl. Surv., Bull. No. 120, p. 78. 1894. 

Devonian. NewYorkand Pennsylvania. Included in Chemung (Upper Devonian). 
New Providence shale, Borden. Indiana Geol. Surv. for 1873, 5th Ann. Rept for 
1873, p. 161. 1874. 
Indiana. 
New Providence shale, Kindle. Am. Pal., Bull., No. 12, pp. 6-7. 1899. 

Devonian. Indiana. Included in Knobstones. 
New Bed sandstone, Hitchcock. Geol. of Mass., Final Rept., vol. ii, pp. 434-531. 
1841. 
Mesozoic. Massachusetts. 



286 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

New Red sandstone, Lea. Phil. Acad. Nat. Sci. Jour., 2d sen, vol. ii, p. 185. 1852. 

Pennsylvania. 
New Red sandstone, Wheatley. Am. Jour. Sci., 2d ser., vol. xxxii, pp. 41-48. 1861. 

Juratrias. Pennsylvania. 
New Red sandstone, Frazer. Am. Inst. Mg. Engrs., Trans., vol. v, p. 494. 1877. 

Juratrias. 
New Red, Frazer. 2d Pa. Geol. Surv., Rept. C*, pp. 13-16. 1880. 

Juratrias. Pennsylvania. 
New Red, Hall. 2d Pa. Geol. Surv., Rept. 0», pp. 20-24. 1881. 

Juratrias. Pennsylvania. 
New Red, Lyman. Am. Phil. Soc., Proc., vol. xxxiii, p. 192. 1894. 

Juratrias. Eastern U. S. 
New Red, Lyman. 2d Pa. Greol. Surv., Final Rept, vol. iii, pt. ii, pp. 2589-2638. 
1895. " 
Juratrias. Pennsylvania, New Jersey. Includes Pottstown, Perkasie, Lansdale, 
Gwynedd, and Norristown shales. Exact syn. Newark. 
New Red, 'Hopkins. Pa. State Coll. Ajin. Rept. for 1896, Appendix, p. 45, et seq. 
1897. 
Juratrias. Pennsylvania. 
New Richmond sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final 
Rept., vol. ii, pp. xxii and 11, 37, 73, 388. 1888. 
Cambrian. Included in Lower Magnesian. 
New Richmond sandstone, Keyes. Iowa Geol. Surv., 1st Ann. Rept., vol. i, p. 23. 
1893. 
Silurian. Iowa. Included in Lower Silurian, Lower Magnesian limestone, and St 
Peter sandstone. 
New Richmond sandstone. Hall and Sardeson. Geol. Soc. Am., Bull., vol. vi, pp. 
167, 179. 1895. 
Upper Cambrian. Wisconsin. Included in Magnesian series. Includes Elevator B. 
New River system, Fontaine. Am. Jour. Sci., 3d ser., vol. vii, p. 463. 1874. 
New River system, Piatt 2d Pa. Geol. Surv., Rept. 4^^, pp. xxiv-xxvi. 1877. 
New River coal group, I^esley. 2d Pa. Geol. Surv., Rept 4^, p. xxiii. 1877. 
New River coal group. White. U. S. Geo!. Surv., Bull., No. 65, p. 202. 1891. 
Carboniferous. Ohio, Pennsylvania, and West Virginia. Included in Pottsville 
conglomerate series. Includes Sharon coal. Fire Creek and Quinnemont beds. 
New River coal series, Lesley. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. i, p. 1666. 
1895. 
Carboniferous. Pennsylvania. Included in No. x, Pocono formation. Exact syn. 
No. xc. 
New River coal series, White. W. Va. Geo!. Surv., vol. i, p. 202. 1899. 

Carboniferous. West Virginia. 
New Scotland beds, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 
1899. 
Devonian. New York. Includeil in Helderbergian. 
New Scotland beds, Weller. N. J. Geol. Surv., Rept., 1899, p. 32. 1900. 

Devonian. New Jersey. 
New Ulm quartzite, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. ii, 
p. xxii. 1888. 
Minnesota. 
New York transition system, Emmons. Geol. of New York, part ii, pp. 99-127. 1842. 
Paleozoic. New York. Includes Champlain, Ontario, Helderberg, and Erie groups. 
New York system, Vanuxem. Geol. of N. Y., pt. iii, pp. 11-16, 24-194. 1842. 
Paleozoic. New York. Includes all subdivisions from Potsdam to Catskill, 
inclusive. 



WEEKS] NEW RED — NEWLAND. 287 

New York system, Hall. Geol. of N. Y., part iv, 4th Geol. Dist., pp. 18 et seq., 
500^15, 515^20. 1843. 

Paleozoic. New York. Includes all subdivisions from Potsdam to Chemung, 
inclusive. Twenty-eight subdivisions in alL 
New York system, Emmons. Agric. of N. Y., vol. i, pp. 113-199. 1846. 

Silurian. New York. Includes Champlain, Ontario, Helderbei^g, and Erie 
divisions. 
New York system, Williams. U. S. Geol. Surv., Bull. No. 80, p. 59. 1891. 

Paleozoic. New York. 
M'ewark, Redfield. Am. Jour. Sci., 2d ser., vol. xxii, p. 367; Am. Assoc. Adv. Sci., 

Proc., vol. X, p. 181. 1866. 
Newark, Darton. U. S. Geol. Surv., Bull. No. 67. 1890. 

Juratrias. New Jersey. 
Newark, Russell. U. S. Geol. Surv., Bull. No. 85, p. 16. 1892. 

Juratrias. 
Newark, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 10. 1894. 

Juratrias. Virginia, Maryland, and West Virginia. 
Newark system, Keith. U. S. Geol. Surv., 14th Ann. Rept, pt. ii, p. 345. 1894. 

Juratrias. Maryland and Virginia. 
Newark diabase, Keith. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 362. 1894. 

Maryland and Virginia. 
Newark, Lyman. Am. Phil. Soc, Proc, vol. xxxiii, pp. 5, 9. 1894. 

Juratrias. Eastern United States. 
Newark, Lyman. Jour, of Geol., vol. ii, pp. 59-61. 1894. 

Juratrias. 
Newark, Gilbert. Jour, of Geol., vol. ii, pp. 55-69. 1894. 

Juratrias. 
Newark, Davis and Griswold. Geol. Soc. Am., Bull., vol. v, p. 616. 1894. 

Trias. Connecticut. 
Newark, Hitchcock. Science, new ser., vol. i, pp. 74-77. 1895. 

Juratrias, Triassic. Connecticut. 
Newark, Russell. Science, new ser., vol. j, p. 266. 1896. 

Juratrias. General. 
Newark system, Kummel. N. J. Geol. Surv., Rept., 1896, pp. 25-88. 1897. 

Juratrias. New Jersey. Includes Stockton, Lockatong, and Brunswick series. 
Newark system, Kummel. Jour, of Geol., vol. v, pp. 541-562. 1897. 

Juratrias. New Jersey. Includes Stockton series; Lockatong and Brunswick shale 
series. 
Newark, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Triassic. Maryland. 
Newark system, Kummel. N. J. Geol. Surv., Rept., 1897, pp. 23-159. 1898. 

Juratrias. New Jersey. Includes Stockton, Lockatong, and Brunswick series. 
Newark, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Triassic. Maryland. 
Newark, Kummel. Jour, of Geol., vol. vii, pp. 23-52. 1899. 

Juratrias. New York, New Jersey. 
Newark, Clark. Md. Geol. Surv., vol. iii, p. 91. 1899. 

Triassic. Maryland. 
Newark, Shaler and Wood worth. U. S. Geol. Surv., 19th Ann. Rept, pt. ii, pp. 396- 
418. 1899. 

Juratrias. Virginia. 
Newland limestone, Walcott. Geol. Soc. Am., Bull., vol. x, pp. 199, 206. 1899. 

Algonkian, Pre-Cambrian. Montana. Included in Belt terrane. 
Newland limestone. Weed. U. S. Geol. Surv., 20th Ann. Rpt., pt. iii, p. 282. 1900. 

Algonkian. Montana. Included in Belt terrane. 



2oS NORTH AMERICAN GEOL(K)IC FORMATION NAMES. [Bfu-.m 

Newman lin>t«tone, Camphell. V. S. Cieol. Surv., Bull., No. Ill, p. 38. 1893- 

CarhonifemiiN. Virginia. Ini'lu<1e<l in ('oal Measiii^. 
Newman limestone, Campbell. U, K. (jeol. Surv., Ueol. Atlas of V. S., Folio No. 12. 
1894. 

CarboniterouH. Kentucky, Viiiiinia, ami TetineHsee. 
Newman limestone, Keilh. Wasli. Phil. Sot-.. Bull., vol. xii, p. 74. 1895. 

Carl)oniferoii8. Tennessee. In<'lu<le<l in l.on'er Carboniferous. 
Newman limestone, Keith. V. S. Geol. Surv., Geol. Atlas of U. S., Folios Noe. 16, 
25, 27. 1895, 1896. 

Carboniferous. Tennessee and N()rHi Carolina. 
Newman limestone, Keith. U. ti. Ueol. Surv., Geol. Atlas of U. S., Folio No. 33. 



n. S. Geol, Surv., Geol. Atlas of U. S., Folio No. 40. 
1897. 
Carboniferous. TeTinessee. Part. syn. Banjfor limestone. 
Newman limestone, Campbell. U. 8. Geol. Surv., Geo!. Atlas of U. 8., Folio No. 47. 
1898. 
Carboniferous; Kentucky. Included in Mississipplan series. 
Newman limeslone, Campbell. U, 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 46. 
1898. 
Cartwniferoug, Kentucky. 
Newman limestone, Camplx?ll. LI. >S. Geol. Surv., Geol. Atlas of U. 8,, Folio No. .'>3. 
1899. 
Carlmniferoits. Tennessee. Iiit'liided in Mississippian series. 
Newman limestone, U. S. Geol. Surv., Geol. Atlas of U, S. Folio No. 59. 1899. 

Carboniferous. Virginia and Tennessee. 
Kewport conglomerate, Rivera. Boston 8oc. Nat. Hist, Proc., vol. xviii, 1875-78, 

p. 97. 1875. 
Newport limestone, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. ii, p. 1594. 1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 
Newport If eck shales, Shaler, Wooilworth and Foerste. U. 8. Geol. Surv., Mon., 
vol. xxxiii, p. 383. 1899. 
Cambrian (?), Rhode Island. 
Newtonville limestone, Andrews. Ohio Geol. Surv., Rept, Pn^. t8tfS,p. 93. 1870. 

Ohio. Exaetsyn. Maxvilte limestone. 
Newtonville limestone, Andrews. Ohio Geol. Surv., Kept. Prog., 1869, p. 96. 1871. 

Ohio. Exact syn. Maxville limeHtone. 
Newtonville limestone. Andrews. Ohio (ieol. Surv., vol, i, pt i, p. 314. 1873. 

Includeil in Coal Aleasuites. Exact syn. Maxville lime- 

^rlon. Olii< 



ad. Phil. Acad. Nat. 8ci., Jour., vol. viii, p. 230. 1842. 

a. Geol. of N. y., pt. iii, pp. 90-94. 1842. 

. Included in New York system. Includes I.ockport group, 

lu grou[i, Geodiferous limerock, ami Calciferous slate. 

ers. Am, Phil. Soc, Trans., new aer., vol. viii, p. 274. 

I New York. 



WEEKS.] NEWMAN NIAGARA. 289 

Nia^ra group, Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 80-117. 1843. 

Paleozoic, New York. Included in New York system. Includes Geodiferous 

limerock and Calciferous slate, Lockport limestone, Rochester shale, Niagara 

shale, and Niagara limestone. Part. syn. Protean group. No. 6 of Pennsylvania 

Survey. 

Niagara shale. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist, pp. 81-83. 1843. 

Paleozoic. New York. Included in Niagara group. 
Niagara limestone, Hall. Geol. of N. Y. pt. iv, 4th G^ol. Dist., pp. 84-97. 1843. 

Paleozoic. New York. Included in Niagara group. 
Niagara group, Emmons. Agric. of N. Y., vol. i, pp. 150-152. 1846. 
New York. Included in Ontario division of New York system. Includes Niagara 
shale and Niagara limestone. Exact syn. Geodiferous limerock and Calciferous 
slate, Lockport limestone and Rochester slate. Part. syn. Protean group of 
Ann. Repts. of New York. 
Niagara limestone, Emmons. Agric. of New York, vol. i, pp. 151-152. 1846. 

New York. Included in Niagara group of Ontario division of New York system. 
Nigara group, Loomis. Am. Jour. Sci., 2d ser., vol. i, p. 222. 1846. 

Silurian. Tennessee. 
Niagara limestone, Murray. Can. Geol. Surv., Rept, 1847-1848. 1849. 

Silurian. Ontario. 
Niagara group. Hale. Foster and Whitney's Kept, on Geol. of Lake Superior dis- 
trict, pt. ii, p. 156. 1851. 
Silurian. Lake Superior region. 
Niagara group. Hall. Pal. of New York, vol. ii, pp. 2-4, 106-108. 1852. 

Silurian. New York. 
Niagara group. Hall. Am. Jour. Sci., 2d ser., vol. xvii, p, 192. 1854. 

Silurian. Michigan. 
Niagara limestone. Hall. Iowa Geol. Surv., vol. i, p. 71. 1858. 

Silurian. Iowa. 
Niagara limestone, Whitney. Iowa Geol. Surv., vol. i, pt. i, pp. 292-295, 362-368. 
1858. 
Silurian. Iowa. 
Niagara, Safford. Am. Jour. Sci., 2d ser., vol. xxxi, p. 207. 1861. 
Silurian. Tennessee. Includes Variegated limestone, and glade-forming lime- 
stones and shales, or Gray limestones and shales. 
Niagara limestone, Whitney. Rept. on Upper Mississippi lead region, p. 186. 
1862. 
Silurian. Wisconsin. 
Niagara formation, Logan. Can. Geol. Surv., Rept. 1843-63, pp. 321-336, 1863. 

Middle Silurian. Canada. Included in Anticosti group. 
Niagara group. Chapman. Can. Inst., new ser., vol. viii, pp. 208-216. 1863. 
Silurian. Canada. Included in Middle Silurian. Includes Medina and Clinton, 
Niagara and Guelph formations. Part. syn. Anticosti group (-f Guelph). 
Niagara limestone, Worthen. III. Geol. Surv., vol. i, pp. 129-136. 1866. 

Silurian. Illinois. 
Niagara formation, Bell. Can. Geol. Surv., Rept. 1863-66, pp. 174, 176. 1866. 

Middle Silurian. Canada. 
Niagara formation, Bell. Rept. 1866-69, pp. 128-131. 1866, 1871. 

Silurian. Canada. 
Niagara limestone, Whitney. 111. Geol. Surv., vol. i, pp. 177-186. 1866. 
Silurian. Illinois. Exact syns. Upper Magnesian, Corraline and Pentamerus 
beds, and Mound limestone. Part. syn. Cliff limestone. 

BuU. 191—02 19 



290 NORTH AMERICAN GKI'L'KIIC FORMATION NAMP:S. [bull.191. 

Niajrara jrroup, lianniHU'r. III. (Jeol. Surv., vol. iii, pp. 245-253. 1868. 

Silurian. lllinoiH. 
Niaf^tra liiue^Mtone, Worthen. III. (nH>l. Surv., vol. iii, pp. 11(>-117. 1868. 

Silurian. Illinois. 
Niagara group, Saffonl. (reol. of Tennessee, hy Saffonl, pp. 291-322. 1869. 

Silurian. Tennesstn*. Inclu(U»8 Meniscus limestone, Dyestone group, AVhite Oak 
Mount san<lstone, and Clinch Mount sandstone. Exact syn. Dana's Niagara 
2)eriod. Part. syns. Medina, Clinton, and Niagara epochs. 
Niagara groui), Bannister. 111. (ieol. Surv., vol. iv, pp. 114, 131, 139. 1870. 

Silurian. Illinois. 
Niagara linie8tx)ne, Bra<lley. 111. <ieol. Surv., vol. iv, pp. 213, 232. 1870. 

Silurian. Illinois. 
Niagara limestone, Worthen. III. (ieol. Surv., vol. iv, p. 6. 1870. 

Silurian. Illinois. 
Niagara, Worthen. Am. .\shoc. Adv. Sci., PrtK'., vol. xix, p. 172. 1870. 

Silurian. Illinois. 
Niagara group. White. Iowa Geol. Surv., vol. i, pp. 182-184. 1870. 

Silurian. Iowa. Includes Niagara limestone. Part. syn. Le Claire limestone, 
Niagara limestone, Hunt. Am. Jour. Sci., 3d ser., vol. i, pj). 420-424. 1871. 

Silurian. Illinois. 
Niagara, Hall. Am. Assoc. Adv. S<.!i., Proc., vol. xxii, p. 321. 1873. 

Silurian. New York, Mississipj>i Valley. Exact syn. Coralline limestone. 
Niagara, Newlierry. Ohio Geol. Surv., vol. i, pt. i, pp. 62, 104, 128. 1873. 

Silurian. Ohio. 
Niagara, Orton. Ohio (ieol. Surv., vol. i, pt. i, p. 464. 1873. 

Silurian. Ohio. 
Niagara, Winchell. Ohio Geol. Surv., vol. i, pt. i,.pp. 596, 613, 627, 741. 1873. 

Silurian. Ohio. 
Niagara, Shumard. Mo. Geol. Surv., Re])t., 1855-1871, pp. 261, 281, 296. 1873. 

Silurian. Missouri. Included in l"pj)er Silurian. 
Niagara limestone, AVorthen. 111. Geol. Surv., vol. v, p. 223. 1873. 

Silurian. Illinois. 
Niagara limestone, Shaw. 111. (ieol. Surv., vol. v, pp. 15-16, 33-35, 64-65, 78-79, 
132-134, 149-152, 187. 1873. 

Silurian. Illinois. 
Niagara, Orton. Ohio. (ieol. Surv., vol. ii, p. 667. 1874. 

Silurian. Ohio. Included in U[)j>er Silurian. Includes Guelph or Odarville 
})eds, Springfield beds, West Union l>eds, Niagara beds, Niagara shale, and 
Davton stone. 
Niagara, Winchell. Ohio (ieol. Surv., vol. ii, pp. 229, 316, 354, 359, 370, 398. 1874. 

Silurian. Ohio. 
Niagara limestone, Killebrew and Safford. Resources of Tenn., pp. 3H-;i9. 1874. 

Silurian. Tennessee. Included in Niagara i>erio<l. 
Niagara, Hall. Regents Cniv. of N. Y., 27th Ann. Rept., pp. 117-131. 1875. 

Silurian. New York. Includes Coralline limestone of New York. 
Niagara limestone, AVinchell. Minn. Geol. and Nat. Hist. Surv. , 4th Ann. Rept, 
T>. 5.S. 1876. 

Lower Silurian. Minnesota. 
Niagara, Smith. Ala. (ieol. Surv., Rept., 1875, pp. 26, 99. 1876. 

Silurian. Alabama. Included in Uj)j)er Silurian. 

agara, Hotchkiss. A (ieographical and Political Summary of Virginia, p. 22. 1876. 
^pper Silurian. Virginia. Exact syns. Surgent, levant (Formation iv, Rogers), 
^ra, Ashburner. Am. Phil. Soc. Proc., vol. xvi, p. 556. 1877. 
ilarian. Pennsvlvania. 



WEEKS.] NIAGABA. 291 

Niagara limestone, Ohainberlin. Geol. of Wis., vol. ii, j)]). 335-371. 1877. 

Upper Silurian. Wisconsin. 
Niagara group, Shaler. Ky. Geol. Surv., vol. iii, new ser., pp. 35, 163-169. 1877. 

Silurian. Kentucky. Exact syn. includes all New York formations from top of 
Medina sandstone to top of Niagara period. 
Niagara, Newberry. Ohio Geol. Surv., vol. iii, p. 7. 1878. 

Silurian. Ohio. Included in Upper Silurian. 
Niagara, Hussey. Ohio Geol. Surv., vol. iii, pp. 443, 447. 1878. 

Silurian. Ohio. 
Niagara, Orton. Ohio Geol. Surv., vol. iii, pp. 386, 408. 1878. 

Silurian. Ohio. 
Niagara, St. John. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Kept., p. 484* 1879. 

Silurian. Idaho. 
Niagara group. Miller. Gin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 268, 290. 1881. 

Silurian. 
Niagara, Chamberlin. Geol. of Wis., vol. i, pp. 178, 181-196. 1883. 

Upper Silurian. Wisconsin. Includes Mayville beds, Waukesha beds, Racine 
beds, Byron beds. Lower and Upper Coral beds, and Guelph beds. 
Niagara, Hall. Am. Assoc. Adv. Sci., Proc, vol. xxxi, p. 46. 1883. 

Silurian. Eastern U. S., Mississippi Valley. 
Niagara limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Kept., vol. i, 
p. 302. 1884. 

Minnesota. 
Niagara group, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Montgomery 
Cos. 1884. 

Silurian. Kentucky. Included in Upper Silurian. 
Nit^ara, Linney. Ky. Geol. Surv., Geol. of Spencer and Nelson Cos., pp. 36-45. 
1884. 

Silurian. Kentucky. 
Niagara, Knott. Ky. Geol. Surv., Geol. of Marion Co., p. 15. 1885. 

Silurian. Kentucky. 
Niagara, Linney. Ky. Geol. Surv., Geol. of Bath Co., p. 21. 1886. 

Silurian. Kentucky. 
Niagara, Ringneberg. Am. Geol., vol. i, pp. 264-272. 1888. 

Silurian. New York. 
Niagara group. Miller. N. A. Geol. and Pal., p. 50. 1889. 
Niagara group, Orton. U. S. Geol. Surv., 8th Ann. Rept, pt. ii, p. 561. 1889. 

Silurian. Ohio, Indiana. 
Niagara group, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 18-20. 
1890. 

Silurian. Ohio. Includes Niagara limestone and shale, Guelph limestone and 
Hillsboro sandstone. Part. syn. Guelph limestone. 
Niagara limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, pp. 51, 60, 81, 213. 

Silurian. Arkansas. Includes Meniscus (Tenn. ), Gait or Guelph (Canada), and 
Leclaire (Iowa) limestone, and Athens (111.) marble. Part. syn. Cliff lime- 
stone (Ohio). 
Niagara, Phinney. U. S. Geol. Surv., 11th Ann. Rept.,pt. i, p. 632. 1891. 

Silurian. Indiana. 
Niagara limestone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 323. 1891. 

Silurian. Iowa. 
Niagara, Prosser. Roch. Acad. Sci., Proc., vol. ii, pp. 50-124. 1892. 

Silurian. New York. 



292 NORTH AMERICAN OEOLOGIO FORMATION NAMES. [Bcu-ltt 

NiaKara liineHtone, Keyes. lowaGeol. Snrv., Ist Ann. Rept., vol. i, p. 30. 1893. 

Silurian. Iowa. Induiled in Upper Silurian. 
Niagara, tlouHer. Iowa OtHji, Surv., Ist Ann. Rept, vol. i, pp. 1^9-207. 1893, 

Hihirian. Iowa, 
Niagara, Bruniell. «eol. Hoc. Am., Bull., vol. iv, pp. 227, 231. 1893. 

Silurian. Ontario. 
Niagara, Prosser. Geol. Sou. Am., Bull., vol. iv, pp. 100, 108. 1893. 

Hilurian. New York. 
Niagara, Daiion. N. Y. State <ieol., 13th Ann. Rept., pp. 206-207, 218. 1894. 

Silurian. New York. 
Niagara limentone.Udden. IJ. S. Ceol. Snrv., 17tL Ann. Kept., pt. li, p. 834. 1896. 

Silurian. Illinois. 
Niagara Beriea, Calvin. Iowa Ueol. Surv., vol. v, pp. 48-60. 1896. 

Silurian. Iowa. Incluilee Delaware, Leclaire, Anamoea, and Bertram stages. 
Niagara limealflne, Luther. N. Y. State Geol., 15th Ann. Rept., pp. 247-250. 1897. 

Silurian. New York. 
Niagara formation, Buckley. Wis. Geol. and Nat. Hiet, t^urv.. Bull. No. 4, Econ- 
Ber., No. 2, pp. 298-348. 1898. 

WiBconsin. 
Niagara limestone, Calvin. Iowa Geol. Sun-., vol. viii, pp. 144-159, 216-220. 1898. 

Silurian. Iowa. Includes Delaware stage. 
Niagara, Barlow. Can. Geol. Surv., Rept. new eer., vol. x, p. 1231,. 1898. 

"" ■ ' " - ■ ^ Quebec. 

N, Y. State Geol.. 16th Ann. Rept., p. 204. 189B. 

;huchert. Science, new eer., vol. x, pp, 876-^77. 1899. 

Includes Clinton beds, Rochester ehale, Lockport lime- 
>h dolomite. 
eol. Surv., vol. iii, p, 97. 1899. 

Included in Silurian. Exact ayn. Lewiston ( Helderberg). 
in and Bain. Iowa Geol. Surv., vol. x, p. 445. 1900. 

arra. Md. Geol. Surv., Allegany County, p, 91. 1900. 

U. S. Geol. 8ur\-„ Geol. Atlas of U. S., Folio No. 20. 1895. 
e. Included in Chilhowee series. 
U. S. Geol. Surv., Geo!. Atlas of U. S., Folios 16, 25. 1895, 

e anil North Carolina. 

Can. Geo!. Surv., Rept, 1877-78, pp. 74B-81B, 171B. I87!l. 
:k>lumbia. Red Beds (E. of Wahsatch) and Star Peak group 
) of 40th Par. Survey. 
jeol. Surv., new ser., vol. vii, pp. 2tiB, 49B-58B, I12B-114B, 



i, pp. 235-237. 1846. 
i. Geol. Surv., 20tli Ann. Rept, pt vii, pp. 472, 480. 



lite. U. S. Geol. Surv., Bull. No. 6S, p. 32. 1891. 
sylvania, West Virginia. Included in Permo-CarboniferooB, 
Esact syn. Limestone No. 10. 



WEEKS.] NIAGARA NIOBRARA. 293 

Niobrara division, Meek and Hayden. Phil. A(!ad. Nat. Soi., Proc, vol. xiii, 
pp. 419, 422. 1862. 

Lower Cretaceous. Nebraska. Exact syn. Formation No. iii. 
Niobrara, Hayden. Am. Phil. Soc., Trans., new ser., vol. xii, p. 1, et seq. 1863. 

Cretaceous. Northwest. 
Niobrara, Hayden. U. 8. Geoi. Surv. of Wyoming, pp. 87, 90. 1871. 

Cretaceous. Included in Lower Cretaceous. Exact syn. Formation No. 3. 
Niobrara, Hayden. U. S. Geol. Surv. of Terr., l-3d Ann. Repts., pp. 49, 54. 1873. 

Cretaceous. Exact syn. Formation No. 3. 
Niobrara, Cope. U. S. Geol. and Geog. Surv., Mon., vol. ii, pp. 16-24. 1875. 

Cretaceous. 
Niobrara, Mudge. U. S. Geol. and Geog. Surv. of Terr., Bull., vol. ii, p. 214. 1876. 

Cretaceous. Kansas. 
Niobrara group. Meek. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. ix, pp. xxx- 
xxxiii. 1876. 

Cretaceous. 
Niobrara, Mudge. U. 8. Geol. and Greog. Surv. of Terr., 9th Ann. Kept., p. 281. 
1877. 

Cretaceous. Kansas. Includes Niobrara and Fort Hays. 
Niobrara, Hague. U. S. Geol. Expl. of 40th Parallel, vol. ii, pp. 42, 67-71. 1877. 

Tertiary. Wyoming. Included in Pliocene. 
Niobrara, King. U. S. Geol. Expl. of 40th Parallel, vol. i, p. 425. 1878. 

Tertiary. Colorado, Wyoming. Included in Pliocene. 
Niobrara group, Newton. Geol. of Black Hills., pp. 173-174. 1880. 

Cretaceous. South Dakota. 
Niobrara, Stevenson. U. S. Geog. and Geol. Surv. W. of 100th M., vol. iii, Suppl., 
p. 97. 1881. 

Cretaceous. Colorado, New Mexico. Included in Colorado. Exact syn. Creta- 
ceous, No. 3. 
Niobrara group, Sternberg. Kansas City Review, vol. v, pp. 1-4. 1881. 

Cretaceous. Kansas. 
Niobrara, Dawson. Science, vol. i, p. 429. 1883. 

Cretaceous. Canada. 
Niobrara, Stevenson. Am. Geol., vol. iii, p. 393. 1889. 

Cretaceous. Colorado and New Mexico. 
Niobrara, Williston. Kansas Acad. Sci., Trans., vol. xiii, pp. 107-111. 1893. 

Upper Cretaceous. Kansas. 
Niobrara group, Calvin. Iowa Geol. Surv., vol. i, pp. 149-161. 1893. 

Cretaceous. Iowa. Exact syn. Inoceramus beds. 
Niobrara limestone, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Friio No. 9. 
1894. 

Cretaceous. Colorado. 
Niobrara chalk, Calvin. Am. Greol., vol. xiv, p. 142. 1894. 

Cretaceous. Nebraska and Dakota. Included in Upper Cretaceous. 
Niobrara chalk, Calvin. Am. Assoc. Adv. Sci., Proc., vol. xliii, p. 197. 1894. 

Cretaceous. Nebraska and Iowa. 
Niobrara, Bain. Iowa Geol. Surv., vol. iii, pp. 101-114. 1895. 

Cretaceous. Iowa. 
Niobrara, Emmons, Cross and Eldridge. U. S. Geol. Surv., Mon., vol xxvii, p. 66. 
1896. 

Cretaceous. Colorado. Included in Colorado group. 
Niobrara group, Gilbert. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 566. 1896. 

Cretaceous. Colorado. Includes Timpas formation and Apishapa formation. 



294 NORTH AMKRICAN GEOLOGIC FOBMATIOH NAMES. [Biai-.m, 

Niobram, WilliBton. Kansas Univ. Geol. Surv., vol. ii, pp. 235-246. 1897. 

ITpper CreUceouH. Kansas. 
Miobrara gruiip, Liigan. Kansas Univ. <ieul. Siirv., vol. ii, pp. 219-2^1. 1897. 

Upper Uretureoiis, Kansas. Includes Fort Hays liniestone, and PtenmcMloD beds 
in Smoky Hill rlialk. 
Niobram formation, (iiilwrt. U. S. Geoi. Surv., Geol. Atlas of U. S., Folio No. 38. 
1897. 

CretaeeouM. Colorado. 
Niobrara, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 24-27. 1898. 

Upper CreUweous. Kansas. Ini:iudt»i Pteraiiodon lieiis (Herperornis and Rudletes 
beiis) and Fort Hays ijeds. 
Niobrara formallon. Hills. V. S. fieol. Surv., Geol. Atlas oE U. S., Folio No, 58. 
1899. 

Cretaceous. Colorado. Apishapa and Timpat) fonnationB. 
NiobraMii Logan. Jour, of Geol., vol. vii, pp. 89-91. 1899. 

Cretaceous. Kanims, Nebraska. Includes Fort Hays limestone, l*t«ranodon l>edg. 
Nipi^n group, Spencer. Can. Nat., 2d ser., vol. vlii, pp. 55-70. 1878. 

Canada. Exact syn. Cop|ier-bearing series. 
Nipigon series. Bell. Can. Geol. Surv., Kept. 1876-77, pp. 213-215. 1878. 

Canada. Kxact syn. Upper Copper-bearing series. 
Nipigon group, Selwyn. Can. Geol. Surv., Bept. 1877-78, [>. 15A. 1879. 

Canada. 
Nipigon, Walcott. Geol. Soc, Am., Bull., vol, x, p. 222. 1899. 

Algonkiaii. Ontario. Part. syn. Keweenawan of Michigan. 
Nisconlith series, Dawson. Can. Geo!. Surv., new ser,, vol. iv, pp. 31B-32B. 1890. 

PaleoKoic. British Columbia. 
Nisconlith series, Dawson. Geol. Soc. Am., Bull., vol. ii, pp. 165, 170. 1891. 

Cambrian. British Columbia, 
Nisconlith series, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 26B, 30B-32B. 
1896. 

Cambrian, BritiHb Columbia, 
Nisconlith slate, McConnell. Can. Geol, Surv., new ser., vol, x, p. 30A. 1898. 

BriUsli Columbia. 
Niahnabotatiy sandstone, White. Iowa Geol. Surv., vol. i, pp. 289-291. 1870. 

Cretaceous. Iowa. 
Nishnabotany sandstone, Winchell. Minu. Geol. and Nat. Hist. Surv., Final Eept, 
vol. i, p. 308. 1884. 

Minnesota. 
Nialinabotany sandstone, Keyes. Iowa tieol. Surv., vol. i, pp. 134-135. 1893. 

Cretaceous. Iowa. 
Nishnabotany sandstone, Lonsdale. Iowa Geol. Surv., vol. iv, pp. 412—423. 1895. 

Cretaceous. Iowa. 
Nishnabotany sandstone, Wliite. Am. Jour. Sci., 2d ser., vol. .iliv, pp. 27, 119. 
1898, 

Cretaceous. Iowa. Exact syn. Dakota (?), 

"--• '■ *~-~ "-••"^T. Mo. Geol. Surv., Bien. Kept., p. 53. 1898, 

issouri. Ini'huled in Upper Coal Measures. 
Am. Inst, Mg, Engrs., Trans., vol. xxix, p. 128. iMO' 

Acad. Sci., Proo., vol. v, p, G2. 1898. 

?11, V. S. Geol. Surv., Geol, Atlas of U, S,, Folio No. 12, 

irginia, anil Tennessee. 



WEEKS] NIOBRARA NORTH VERNON. 295 

NoHchucky shale, Walcott. (ieol. Soi*. Am., Bull., vol. v, j). 195. 1894. 

Cambrian. Virginia. 
Nolichucky shale, Keith. V. S. (ieol. Surv., (ieol. Atlan of U. S., FoUosNoh. 18, 25, 
27. 1895, 1896. 

Cambrian. Tennessee and North Carolina. 
Nolichucky shale, Keith. U. S. (ieol. Surv., Geol. Atlas of V. S., Folio No. 38. 1896. 

Cambrian. Tennessee. Included in Conasauga shale. 
Nolichucky shale, Campbell. U. ^. (ieol. Surv., (ieol. Atlas of U. S., Folio No. 44, 
1897. 

Cambrian. Virginia, West Virginia. 
Nolichucky shale, Campbell. U. S. Geol. Surv., Geol. Atlas of V, S., Folio No. 59. 
1899. 

Cambrian. Virginia, Tennessee. 
M'orian, Hitchcock. Am. Assoc. Adv. Sci., Proc, vol. xxi, p. 136. 1872. 

Archean. New Hampshire. 
Norian, Crosby. Report on Geol. Map of Mass., pp. 7-11. 1876. 

Massachusetts. 
Norian series, Hunt. 2d Pa. (ieol. Surv., Rept. E, pp. 161-164. 1878. 

Archean. Canada. 
Norian series, Selwyn. Can. Geol. Surv., Rept. 1877-78, pp. lOA, 12A-13A. 1879. 

Canada. 
Norian, Hunt. Smithsonian Inst. Ann. Rept., 1882, p. 336. 1884. 

Eozoic. N. E. America. Included in An-hean. Includes Upi)er I^urentian or 
Labradorian. 
Norian, Whitney and Wadsworth. Harvard Coll. Miis. Comp. Zool., Bull., vol. vii, 
1880-84, pp. 561, 562. 1884. 

Azoic. 
Norian, Pumpelly. Geol. Soc. Am., Bull., vol. iv, p. 383. 1893. 

Archean. Canada (?). 
Normandy limestone, Campbell. U. S. Geol. Surv., (ieol. Atlas of U. S. Folio 
No. 53. 1899. 

Silurian. Tennessee. Exact syns. Chickamauga limestone, Nashville series. 
Norristown shale, Lyman. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 2612- 
2616. 1895. 

Juratrias, Permian (?). Pennsylvania. Included in New Red. 
Norristown stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas, Indian Territory. 
Nortli Denison, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894 

Cretaceous. Indian Territory. Included in Denison beds, Washita division. 
Nortli Haven greenstone. Smith, (ieol. of the Fox Islands, pp. 13-17. 1896. 

Pre-Silurian. Maine. 
Nortli Park group, King. U, S. Geol.rE^J. of 40th Parallel, vol. i, p. 431. 1878. 

Tertiary. Wyoming. Included in Pliocene. 
Nortli Valley Hill sandstone, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. i, p. 166 
et seq. 1892. 

Cambrian. Pennsylvania. 
North. Vernon limestone, Borden. Indiana (ieol. Surv., 7th Ann. Rept., 1875, 
pp. 148, 160. 1876. 

Devonian. Indiana. 
North Vernon bluestone, Cox. Indiana (ieol. Surv., 8th, 9th, and 10th Ann. Repts., 
1876, 1877, 1878, p. 88. 1879. 

Indiana. 
North Vernon stone, Elrod. Indiana Dept. (Jeol. and Nat. Hist, 11th Ann. Rept., 
1881, pp. 174, 186. 1882. 

Carboniferous. Indiana. 



296 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bitluiM. 

Norton toriiiutiuiL, Caiiipl»-ll. V. H. <iw)i. Siirv., Bull, N<.. Ill, p. U. I89;i. 

(.'urbonifeniuH. Virtcinia. 1 ticliiiliHl in Ciial MiiifiiivH. Kxact Hyn. Lower CW 
Meaaun*. 
Norton, Canipbell. II. M. (iwil. Surv., lieul. Alias ot V. S., Folio No. 12. 18M. 

CarboDiferouH. Kentucky, Viiyinia, Tennetaee. 
Norton zone, WilliHtnn. Kan. Univ. Quart., vol. iv., p. 251. 1R96. 

Upper OetaceoUH. KanMti. Inrludetl in Smoky Hill chalk. 
Norton formation, Caiupliell. U. S. <ieol. Surv., Geol. Atla« of U. 8., Folio Nn. ."ffl, 
1899. 

Carboniferous. Virginia and Tennessee. 
Novaculite eeries, Aahley. Am. Phil. Ko(-., Proi-., vol. xxxvi, pp. 228 et seq. 1897. 

Carbon iferouB. Arkanws. 
Nulato sandstone, Spurr. U. S. lleol. Sun-., 18th Ann. Kept., pt. iii, p. 19H. 189a 

Tertiary. Alaska. Included in Miocene. 
Nulato beds, Becker. U. S. Geol. Surv., 18th Ajin. Kept., pt. iii, pi. i. 1898. 

Numbers I, H, JH, TV, Meek and Hayden. Am. Jour. Sci., 2d ser., vol. xiviii, 
pp. 219-226. 1859. 
Cretaceous, Kansas aud Nebraska. 
Number I, Ko^re. Pa, State Geol., 2d Ann, Rept., pp, 20-23. 1838. 

Cambrian. Pennsylvania. 
Number I; Rogers. Pa. State Geol., 4th Ann. Kept., pp. 38, 46. 1840. 

Cambrian. Pennsylvania. 
Numljer I, Lesley. 2d Pa, Geol, Surv,, Final Rept., vol, i, pp. 165-186. 1892. 
Cambrian. Pennsylvania. Includes Chiques sandstone, Hellam quartz. North 
Valley, Hill sandstone, Potsdam, and Upper Cambrian quartzite. Exact sya. 
Primal sandstone. 
NmnberU, Ik^rs. Pa, State Geol,, 2d Ann. Rept., pp. 23-30. 183S. 

Silurian. Pennsylvania. 
Number II, Rogers. Pa. State Geol., 4th Ann. Kept,, pp. 41, 44, 53, 99, 134. 1840, 

Silurian. Pennsylvania. 
Number II, Prime. 2d Pa. Geol. Surv., Rept. D, pp. 7-15. 1875. 
Silurian. Pennsylvania. Includes Calciferous, Chazy, Birdseye, and Black River 
of New York. 
Number II, Prime. 2d Pa. Geol. Surv,, Rept, D". pp, 11-22. 1878. 

Silurian. Pennsylvania. Exact syn, Siluro-Cambrian, 
Number II, Hall, 2d Pa. Geol, Surv., Kept. C, pp. 34-38. 1881. 

Silurian. Pennsylvania. 
Number II, Prime. 2d Pa. Geol. Surv., Rept. D", pt. i, pp. 161-201. 1883. 

Silurian, Pennsylvania. 
«.,„!„► It n-Tf-iiii^rs. 2d Pa. Geol. Surv., Rept. D", pt, ii, pp. 137-196. 1883. 
ania. Includes Auroral and Matinal of Rogers, Calciferous, 
•iew York. 

W Pa. tieol. Smtv., Rept. T-, pp. 401^24. 1884. 
mia. Includes Trenton, Chazy, Calciferous, vtc. F.xaotsjn, 
nestone. 
Pa. State Geol,, 2d Ami, Rept., pp. 30-36. 1838. 

Pa. State Geol., 4th Ann. Kept., pp. 64, 101, IIH. 1840. 
uiia. 

2d Va.. Geol. Surv., Rept. D", pt, i, pp. 83-85. 1883. 
ania. ICxact syn. Hudson River. 

2d Pa. Geol. Surv.. Kept. D>, pt. i, pp. 32-36. 1883. 
ania, Kxact syn. Hudson River. 



WEEKS] NORTON NUMBER VI IT. 297 

Number III, Ewiuj?. 2(i Pa. Geol. Surv., Kept. T*, pp. 424-427. 1884. 

Silurina. Pennsylvania. Includes Hudson River and Utiira. 
Number III, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, pp. 525-624. 1892. 

Silurian. Pennsvlvania. Includes Utica and Hudson River slate. 
Nmnl>er IV, Rogers. Pa. State Geol., 2d Ann. Rept, pp. 36-39. 1838. 

Silurian. Pennsylvania. 
Number IV, Rogers. Pa. State Geol., 3d Ann. Rept., pp. 47-49. iaS9. 

Silurian. Pennsylvania. 
Number IV, Rogers. Pa. State Geol., 4th Ann. Rept., pp. 69, 102, 105, 137. 1840. 

Silurian. Pennsylvania. 
Number IV, Ewing. 2d Pa. Geol. Surv., Rept. T*, pp. 427-429. 1884. 

Silurian. Pennsylvania. Includes Oneida and Medina. . 
Number IV, D'Invilliers. 2d Pa. Geol. Surv., Rept. F*, pp. 78-79. 1891. 

Silurian. Pennsylvania. Includes Medina anld Oneida. 
Number IV, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, pp. 625-719. 1892. 

Silurian. Pennsylvania. Includes Oneida and Medina. 
Number V, Rogers. Pa. State Geol., 2d Ann. Rept, pp. 39-46. 1838. 

Silurian. Pennsylvania. 
Number V, Rogers. Pa. State Geol., 4th Ann. Rept, pp. 78, 140. 1840. 

Silurian. Pennsylvania. 
Number V, Ewing. 2d Pa. Geol. Surv., Rept T*, p. 429. 1884. 

Silurian. Pennsylvania. Exact syn. Clinton group. 
Number V, D'Invilliers. 2d Pa. Geol. Surv., Rept. F*, pp. 62-78. 1891. 

Silurian. Pennsylvania. Includes Salina and Clinton. 
Number V, Lesley. 2d Pa. Geol. Surv., Final Rept, vol. ii, pp. 721-897. 1892. 

Silurian. Pennsylvania. Includes Clinton, Niagara, Salina, Barree group, McCoy- 
town sandstone. Lost Creek limestone, Bloomsburg shale, and Bridgeport 
sandstone. 
Niunber VI, Rogers. Pa. State. Geol., 2d Ann. Rept., pp. 46-50. 1838. 

Silurian. Pennsylvania. 
Number VI, Rogers. Pa. State Geol., 4th Ann. Rept., pp. 84-143. 1840. 

Silurian. Pennsylvania. Exact syn. Fossiliferous limestone. 
Number VI, Ewmg. 2d Pa. Geol. Surv., Rept. T*, pp. 429-430. 1885. 

Silurian. Pennsylvania. Exact syn. Lower Helderberg. 
Number VI, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 898-1033. 1892. 

Silurian. Pennsylvania. Includes Stormville shale, Bossardville limestone, Poxono 
Island shale, Bastard limestone, Lewistown limestone, and Clarks Mill shale. 
Exact syn. Lower Helderberg. 
Number VH, Rogers. Pa. State Geol., 2d Ann. Rept, pp. 50-52. 1838. 

Devonian. Pennsylvania. 
Number VII, Rogers. Pa. State Geol., 4th Ann. Rept., pp. 88-143. 1840. 

Devonian. Pennsylvania. Exact syn. Fossiliferous sandstone. 
Number VII, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1034-1142. 1892. 

Devonian. Pennsylvania. Includes Oriskany, Canda-Galli and Schoharie grits. 
Number Vm, Rogers. Pa. State Geol., 2d Ann. Rept., pp. 52-59. 1838. 

Devonian. Pennsylvania. Exact syn. Olive slate. 
Number VIII, Rogers. Pa. State Geol., 4th Ann. Rept, pp. 91, 146. 1840. 

Devonian. Pennsylvania. Exact syn. Olive slate. 
Number VIII, Chance. 2d Pa. Geol. Surv., Rept G*, pp. 105-106. 1880. 

Devonian. Pennsylvania. Includes Chemung and Portage. 
Number VIII, Stevenson. 2d Pa. Geol. Surv., Rept T^ pp. 75-84. 1882. 

Devonian. Pennsylvania. Includes Chemung, Portage, Genesee, Hamilton, and 
Marcellus. 



298 NOKTH AMERICAN OEOLOaiC FORMATION NAMES. [bull.19L 

Nuinl)er VIII, IVInvilliere. 2d Pa. Geol. Surv., Kept. F*, pp. 45-50. 1891. 

Devonian. Pennsylvania. Indudea Chemung, Portage, Genesee, Hamilton, and 
Man*elluH. 
Number Vina,LeHley. 2(i Pa. Geol. Surv., Final Kept, vol. ii, pp. 114^-1193. 1892. 

Devonian. Pennsylvania. Includes Upper Uelderberg, Onondaga, and Comifer- 
OU8 limestones. 
Number Vmb, Lesley. 2<l Pa. Geol. Surv., Final Kept., vol. ii, pp. 1194-1236. 1892. 

Devonian. Pennsylvania. Kxaet syn. Mart^llus, blaek shale. 
Number VIHc, Lesley. 2<1 Pa. Geol. Surv. , Final Kept. , vol. ii, pp. 1236-1307. 1891. 

Devonian. Pennsylvania. Exact syn. Hamilton. 
Number Vnid, Lesley. 2d Pa. Creol. Surv., Final Kept., vol. ii, pp. 1307-1322. 1892. 

Devonian. Pennsylvania. Exact syn. Tully limestone. 
Number VIHe, Lesley. 2d Pa. (ieol Surv., Final Rept., vol. ii, pp. 1323-1335. 1892. 

Devonian. Pennsylvania. Exact syns. Genesee black slate, Cadent Upper black 
slate. 
Number Vmf , Lesley. 2d Pa. Geol. Surv. , Final Rept. , vol. ii, pp. 1337-1370. 1892. 

Devonian. Pennsylvania. Includes Cashaqua shale and Gardeau shale. Exact 
syn. Portage. 
Number Vmg, Lesley. 2d Pa. Geol. Surv., Final Rept., voLii, pp. 1371-1566. 1892. 

Devonian. Pennsylvania. Exact syn. Chemung. 
Number IX, Rogers. Pa. State (Jeol., 2d Ann. Rept., pp. 59-63. 1838. 

Devonian. Pennsylvania. 
Numl>er IX, Rogers. Pa. State (Jeol., 4th Ann. Rept., pp. 97, 147. 1840. 

Devonian. Pennsylvania. 
Number IX, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1567-1627. 1892. 

Devonian. Pennsylvania. Exact syn. Catskill. 
Number X, Rogers. Pa. State Geol., 2d Ann. Rept., pp. 63-65. 1838. 

(carboniferous. Pennsylvania. 
Number X, Rogers. Pa. State Geol., 4th Ann. Rept., p. 98. 1840. 

Carlxmiferous. Pennsylvania. 
Number X, Piatt. 2d Pa. Geol. Surv., Rept. II*, p. 311. 1878. 

(carboniferous. Pennsylvania. Exact syns. Pocono- Vespertine. 
Number X, I^sley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, pp. 1629-1789. 1895. 

Carboniferous. Pennsylvania. Exact syn. Pocono formation. 
Number XI, Rogers. Pa. State Geol., 2d Ann. Rept., pp. 65-68. 1838. 

Carboniferous. Pennsylvania. 
Number XI, Rogers. Pa. State Geol., 4th Ann. Rept, p. 98 et seq. 1840. 

Carboniferous. Pennsylvania. 
Number XI, Piatt. 2d Pa. Geol. Surv., Rept. U*, p. 311. 1878. 

Carboniferous. Pennsylvania. Exact syns. Mauch Chunk red shale, Umbral. 
Number XI, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, pp. 1805-1853^. 
1895. 

Carboniferous. Pennsylvania. Exact syns. Mauch Chunk red shale, Umbral. 
Number XII, Rogers. Pa. State Geol., 2d Ann. Rept., pp. 68-71. 1838. 

(/arlxmifcrous. Pennsylvania. 
Numl>er Xll, Rogers. Pa. State Geol., 4th Ann. Rept., pp. 123-132, 199. 1840. 

(.'arl)oniferous. Pennsylvania. 
Number Xll, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 63-66. 1875. 

(carboniferous. Pennsylvania and Ohio. 
Number XII, White. 2d Pa. Geol. Surv., Rept. Q^, pp. 51-70. 1877. 

Carboniferous. Pennsylvania. Includes Piedmont or Tionesta sandstone, Mercer 
limestone, Connoquenessing sandstone, and Quakertown shale. 
dumber XII, Piatt. 2d Pa. Geol. Surv., Rept. H*, p. 310. 1878. 

Carlxmiferous. Pennsylvania. Exact syn. Pottsville conglomerate. 



WEEKS.] NUMBER VIII NUTZOTIN. 299 

Number XII, Chance. 2d Pa. Geol. Surv., Rept. G*, pp. 91-95. 1880. 

Carboniferous. Pennsylvania. 
Number XII, D'Invilliers. 2d Pa. Geol. 8urv., Final Rept., vol. iii, pt. i, pp. 1857- 
1915. 1895. 
Carboniferous. Pennsylvania. Includes Home wood or Johnson Run sandstone, 
Connoquenessing or Kinzua sandstone, and Sharon, Olean or Garland con- 
glomerate. Exact syns. Potts vi lie conglomerate. Serai conglomerate. 
Number XII, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 2155- 
2405. 1895. 
Carboniferous. Pennsylvania. Exact syn. Lower Productive Measures, Allegheny 
River series. 
Number XII, Smith. 2d Pa. Geol. Surv., Final Rept., vol. ii, pt. i, pp. 1853-1855, 
1920-1923, 1949-1951, 1953, 1959, 1966, 1975, 1984, 2000, 2009, 2025, 2031-2032, 
2050, 2054. 1895. 
Carboniferous. Pennsylvania. Exact syn. Pottsville conglomerate. 
Nimil>er Xm, Rogers. Pa. State Geol., 2d Ann. Rept, pp. 71-79. 1838. 

Carboniferous. Pennsylvania. Exact syn. Anthracite Coal Measures. 
Number XIII, Rogers. Pa. State Geol., 3d Ann. Rept, pp. 82-87. 1839. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Number XIV, D'Invilliers. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. ii, pp. 2406- 
2447. 1895. 
Carboniferous. Pennsylvania. Exact syns. Barren Measures, Pittsburg series, and 
Elk River series of West Virginia. 
Number XV, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 2448- 
2564. 1895. 
Carboniferous. Pennsylvania. Exact syns. Upper Productive or Monongahela 
River series. 
Number XVT, D'Invilliers. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. ii, pp. 2565- 
2588. 1895. 
Carboniferous. Pennsylvania. Includes Greene Co. group and Washington Co. 
group. Exact syns. Upper Barren Measures, and Permo-Carboniferous or 
Dunkard Creek series. 
Nummulite limestone, Lyell. Am. Jour. Sci., 2d ser., vol. iv, pp. 186-191. 1847. 

Eocene. Alabama. Exact syn. Orbitolite limestone. 
Nujida group, Vanuxem. Geol. of N. Y., pt. iii, p. 172. 1842. 

Paleozoic. New York. Included in New York system. Exact syn. Port^e 
group. 
Nunda group. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 224-241. 1843. 
Paleozoic. New York. Included in New York system. Exact syn. Portage 
group. 
Nushagak beds, Spurr. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, pp. 173-174, 184. 
1900. 
Tertiary. Alaska. Included in Neocene. 
Nussbaum formation, Gilbert. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 36. 
1897. 
Colorado. Included in Neocene. 
Nussbaum formation. Hills. U. S. (tcoI. Surv.. (iJeol. Atlas of U. S., Folio No. 58. 
1899. 
Colorado. Included in Neocene (?). 
Nussbaum formation. Hills. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 
1900. 
Colorado. Included in Neocene. 
Nutzotin series. Brooks. U. S. Geol. Surv., 2l8t Ann. Rept, pt. ii, p. 359. 1900. 
Alaska. 



6m NORTH AMERICAN GEOLOGIC FOBMATIOM NAMES. [nrLulM. 

Oak Creek ImkIn, Warrl. V. S. <i<Mil. Snrv., ISttli Ann. Kept, pt. ii, p. bff.i. 1!»9. 

CrctMMioUH. South Dakota. 
Oak Crt-ek b«lH, Jciinfy. I'. S.(i(H.l.Sun-., lath Ann. Ke|it., pt, ii, pp. 568-587,593. 
1S99. 
Cretaceous. South Dakota. Included in Dakota group. 
Oak Orore aands, Dale. V. S. Oe<il. Surv., 18th Ann. Kept., pL ii, p. 340. 1898. 

Tertiary. Florida. 
Oakland liment«ne Ifntils, Dilier. 1', S. (icol. Surv., (ieol. .Atlan of I". S., Folio 
No. 49. 18H8. 
Ot'^>n. Included in Eocene. 
OakviUe, Dumble. Jour, of i.im\., vol. ii, pp. ■%56-55a 1894. 

Tertiary. Texax.. Included in Mim^ne. 
Oakville bwla, Dall. V. S. (leol. Surw, IWh Ann. Kept., pt. ii, p. 339. 1898. 

Tertiary. Texan. Incluilfd in Mioi'ene. Part. eyn. Fayette beds. 
Ocala group, Dall. Wagner Free Inst. Sci., Trann., vol. iii, pt, ii, p. 209. 1892. 
Eocene. Florida, lnclH<letl in Later Eocene. Exact syn. Nummulite beds of 
Florida. 
0<«la limeslone, Dall and Harris. IT. f». Ueol. Surv,, Bull, No, 84, p. 103. 1892. 

Tertiary. Florida. Exact syn. NuuiiuulitJc beds. 
Oceanic serieB, Hill. Harvard Coll. Mus. Comp. Zool., Bull., vol. xxsiv, pp, 69-85. 
1899. 
Tertiary, Jamaica, Inchidetl in Dligocene. Includes Cobre, Moneague, aivl 
MotilpeliiT foruialions. 
Ockeaaee beds, Dall an.i Harris. V. S. (Jeol. Sun-., Bull. No. 84. p. 105. 1892. 

Tertiary. Floriila. Included in Miocene, Chattahoochee group. 
Ocheeeee l>edH, Dall. Wapier Free Inst. S<'i., Trans., vol. iii, pt. ii. p. 209. 1892. 
Mio<'ene. Floritia. Included iuChipolaepich, Chattahoochee itrou p. Fart gyn. 
Chattahoochee group. 
Ocoee conglomerate and slates, Sattord. Heol. Kec-onn. of the State of Tenii,, Ist 
Kept, pp. 151-152. 185S. 
Tennessee. Infhi<le<l in Metainorphic Korks. 
Ocoee conglomerate anil slates, Safford. Geol. of Tenn., by .Saffonl, pp. I8.t-198. 
18«9. 
Silurian. Tenne»<ee. Included in Potsdam group. 
OiHjee grou|>, Killebrew aud Saftord. Kesources of Tennessee, pp. 28-29. 1874. 

Silurian Tennessee. Included in Potsdam period. 
Ocoee grou;i, Bradley. Am. Jour. Sci., 3d sit., vol. ix. p. 283. 1875. 

Cambrian. Teiinetwe. Kxact syn. Lower Polalain (Acadian). 
Ocoee, Little. Hand-book of lia,. Com, of Agric, 1876, p. 41, 187«. 

Silurian, (ieorgia. Included in Lower Primordial. Part. syn. .Acadian. 
Ocoee conglomerate, Walwtr. V. S. Oet.l. Suri., Bull. No. 81, pp. 143, 252. 299. 
1891. 
Cajuhrian. Appulacliian reglcU' 
Oooe*'. Sn'iicer. (ia. tiwil. Sun.. The I'ale^HMiic Grtmp. p. 34. 1893. 

Oamhrian. Georgia. Includeii in Lii«er Camhriani,?*. 
0.\H^- s'ries, Hayes. V. S. (ii^.l. Surv., iie.il. AtW of V. ^^.. Folio No. 20. 189S. 
_^__ Aliftinkiaul,?). Tennii4*e. Includes Wilhiit- slate. Ciliii> conglomerate, Pigew. 
slate, aud Thunderhead con^'lonierale and ^lale. 
■roup. Keith, l". S. Ui\il. Sun., U.-ol. Atla^; of C. S.. Folioe Noe. 16, 25, 

^. law. 

North Carolina. Includes Wilhite slate, Oti*o congiom- 
ailc^ cvinglonierale. Thniiilerheail conglomerate. Haul 
inglomerate. 



WEEKS.] OAK CREEK OHIO. 301 

Ocoee, Smith. Ala. Geol. Surv., Bull. No. 5, p. 110. 1896. 

Algonkian. Alabama. Exact 8yn. Tallade^. 
Ocoya Creek, Turner. Am. Geol., vol. xiii, p. 239. 1894. 

Tertiary. California. Included in Miocene. 
Ocoya Creek beds, Turner. U. 8. Geol. Surv., 14th Ann. Rept, pt. ii, p. 461. 1894. 

Tertiary. California. Included in Miocene. 
Odanah series, Tyrrell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 83E, 84E, 85E, 
199 E, 212F>-215E. 1893. 

Cretaceous. British Columbia. Included in Pierre. 
Ograllala formation, Darton. U.S. Geol. Surv., 19th Ann. Rept., pt. iv, pp. 734-735, 
741-742. 1899. 

Tertiary. Nebraska. Included in Pliocene(?). 
O^den quartzite, King. Am. Jour. Sci., 3d ser., vol. xi, p. 478. 1876. 

Devonian. Nevada. 
Ogden quartzite, Emmong. U. S. Geol. Ex pi. of 40th Parallel, vol. ii, p. 343, et seq. 
1877. 

Devonian. Utah. 
Ogden quartzite, Hague. U. S. Geol. Expl. of 40th Parallel, vol. ii, p. 400. 1877. 

Devonian. Utah. 
Ogden quartzite. King. U. S. Geol. Expl. of 40th Parallel, vol. i, pp. 127-248. 1878. 

Devonian. Utah, Nevada. 
Ogden flint, Prosser. Geol. Soc. Am., Bull., vol. vi, p. 48. 1894. 

CarlK)niferous, Permian. Kansas. 
Ogrishke conglomerate, Winchell. Minn. Geol. and Nat. Hist. Surv., 16th Ann. 
Rept, pp. 344-350, 359. 1888. 

Minnesota. 
Ogishke conglomerate, Winchell. Am'. Assoc. Adv. Sci., Proc, vol. xxxviii, p. 234. 
1889. 

Algonkian. Lake Superior region. Included in Vermilion series. 
Ogishke conglomerate. Grant. Am. Geol., vol. x, p. 4. 1892. 

Archean. Minnesota. 
Ohio black slate, Andrews. Ohio Geol. Surv., Rept. Prog., 1869, p. 62. 1870. 

Ohio. 
Ohio shale, Shaler. Ky. Geol. Surv., new ser., vol. iii, pp. 169-175. 1877. 

Devonian. Kentucky. Exact syns. Huron shale. Includes all from top of Oris- 
kany to top of Chemung. 
Ohio shale, Orton. Rev. of Strat. Geol. of eastern Ohio, p. 4. 1880. 

Devonian. Ohio. Exact syn. Black shale. 
Ohio shale, Orton. Ohio (ieol. Surv., vol. vi, pp. 4, 23. 1888. 

Carboniferous. Ohio. Includes Cleveland shale, Erie shale, and Huron shale. 
Ohio shale, Herrick. Denison Univ. Sci. Lab., Bull., vol. iii, p. 26. 1888. 

Devonian. Ohio. 
Ohio shale, Orton. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 570. 1889. 

Devonian. Ohio, Indiana. Includes Cleveland, Huron, and Erie shales. 
Ohio shale, Orton. Ohio Geol. Surv., Prelim. Rept. Petroleum and Inflammable 
Gas, pp. 23, 62. 1886. 

Ohio. 
Ohio shale, Orton. Ohio Geol. Surv., 3d Organization, 1st Ann. Rept., pp. 27-33, 
pp. 248-249. 18K'0. 

Devonian. Ohio. Includes Cleveland shale, Erie shale, and Huron shale. Part, 
syn. Genesee slate, Portage and Chemung groups. 
Ohio shale, Orton. Ohio Geol. Surv., vol. vii, pp. 4, 21. 1893. 

Devonian. Ohio. Includes Cleveland shale, Erie shale, and Huron shale. 



302 NOKTH AMERICAN GEOLOGIC FOKMATION NAMES. [biluIM. 

Ohio, Eldridjfe. W S. (leol. Surv., Geol. Atlaa of V. S., Folio No. 9. 1894. 

(*retaceou8. (V)lorado. 
Ohio Creek, Cro^ti. U. S. (ieol. Surv., Mon., vol. xxvii, p. 219. 1896. 

Cretaceous. Colorado. Part. syns. Arapahoe. 
Ohio shale, Bownocker. Denison Univ. Sci. Lab., Bull., vol. ii, art ii, p. 14. 1898. 

Ohio. 
Oil Creek Lake group, I^^esley. 2d Pa. (ieol. Surv., Final Rept., vol. iii, pt. i, 
p. 1767. 1895. 
(JarlxjniferouH. Pennsylvania. Included in No. 10, Pocono. Indudes Corry 
sandstone, *^1 Mountain sandstone, Cussewago shale, limestone, and sandstone. 
Exact syn. Berea group of Ohio. 
Oil Lake group, White. 2d Pa. Geol. Surv., Rept. Q«, pp. 91-98. 1881. 
(carboniferous. Pennsylvania. Includes Corry and Cussewago sandstone and 
shales. Exact syns. Berea grit, Pi thole grit. Part syn. Pocono. 
Okliine series, Spurr. V. S. (ieol. Surv., 20th Ann. Kept, pt. vii, pp. 163-169, 181. 
1900. 
Cretaceous. Alaska. 
Old Bed sandstone. Hall. (ieol. of N. Y., pt iv, 4th (tcoI. Dist, pp. 278-283. 1843. 
Paleozoic. New York. Includes Cati^kill group, Montrose and Oneonta sand- 
stone. No. 11, Pennsylvania Survey. 
Old Red sandstone, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 97-102. 1875. 

Devonian. Pennsylvania and New York. Exact syn. No. IX. 
Olean conglomerate, Sub-, Carll. 2d Pa. (ieol. Surv., Rept. 1*, pp. 189-195. 
1883. 
Carlxmiferous. Pennsylvania. Exact syn. Shenango sandstone. 
Olean conglomerate, Ashburner. 2d Pa. Geol. Surv., Rept. R*, pp. 396-397. 1885. 

Carlx)niferou8. Pennsylvania. 
Olean conglomerate, Sub-, Ash burner. 2d Pa. (ieol. Surv., Rept R^, p. 402. 1885. 

Carboniferous. Pennsylvania. 
Olean Onglomerate, Sub-, Carll. 2d Pa. Geol. Surv., Rept I*, pp. 105-110. 1890. 
Carlx)niferous, Pennsylvania. Included in Pocono. Exact syns. Shenango sand- 
stone and Ix>gan sandstone. 
Olean conglomerate, Randall. Regents Univ. of N. Y., 47th Ann. Rept, p. 715. 
1894. 
New York. 
Oleon, Sub-, I^sley. 2d Pa. (ieol. Surv., Final Rept, vol. iii, pt i, p. 1733 et seq. 
1895. 
('arlx)niferous. Pennsvlvania. Included in No. 10, Pocono. 
Olean conglomerate, D'lnvilliers. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt. h 
pp. 1861, 1873, 1892. 1895. 
Carlwniferous. Pennsylvania. Included in No. 12, Pottsville conglomerate. 
Olentangy shale, Winchell. Ohio (ieol. Surv., vol. ii, pp. 243, 287. 1874. 

Devonian. Ohio. 
Olentangy shale, Orton. Ohio (ieol. Surv., vol. vi, pp. 4, 22. 1888. 

Devonian, f^xact syn. Hamilton shale (?). 
Olentangy shale, Orton. OhioGeol. Surv., 3d Organization, 1st Ann. Rept, pp. 26-27. 
1890. 
Devonian. Ohio. Exact syn. Hamilton shale. 
Olentangy shale, Orton. Ohio (ieol. Surv., vol. vii, pp. 4, 20. 1893. 

Devonian. Ohio. Exact syn. Hamilton shale. 
ney Valley slate, D'lnvilliers. 2d Pa. Geol. Surv., Rept. D*, pt ii, pp. 102-103. 
1883. 
Cambrian (?). Pennsylvania. Included in Potsdam (?). 



WEEKS] OHIO ONEOTA. 303 

OUve shale, Read. Ohio Geol. Surv., vol. iii, pp. 337, 523. 1878. 

Carboniferous. Ohio. Inchided in Waverlv. 
Oneida conglomerate, Vanuxem. Geol. of N. Y., pt. iii, pp. 71-74. 1842. 

Paleozoic. New York. Included in New York system. Includes Shawangunk 
conglomerate, Millstone grit, Gray band of Rochester, and No. 5, Pennsyl- 
vania Survey. 
Oneida conglomerate. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist, pp. 18, 31. 1843. 

Paleozoic. New York. Included in New York system. Exact syn. Shawangunk 
conglomerate. 
Oneida conglomerate, Emmons. Agric. of N. Y., vol. i, pp. 125-126. 1846. 

Silurian. New York. Included in Champlain division of New York system. 
Oneida conglomerate, Jewett. Am. Jour. Sci., 2d ser., vol. xxxviii, p. 121. 1864. 

Silurian. New York. 
Oneida conglomerate, Cook. Geol. of N. J., pp. 146-149. 1868. 

Silurian. New Jersey. Exact syn. Shawangunk conglomerate or grit. 
Oneida conglomerate, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 61. 18*^3. 

Silurian. Ohio. 
Oneida, Ash burner. Am. Phil. Soc., Proc, vol. xvi, pp. 532, 558. 1877. 

Silurian. Appalachian region. Part. syn. Levant in part. 
Oneida, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 44-48. 1881. - 

Silurian. Pennsylvania. Included in No. 4. 
Oneida conglomerate. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 288. 
1881. 

Silurian. Included in Medina group. 
Oneida conglomerate. White. 2d Pa. Geol. Surv., Rept. G«, pp. 150-152. 1882. 

Silurian. Pennsylvania. Included in No. 4, Medina. 
Oneida, White. 2d Pa. Geol. Surv., Rept. T^ pp. 143-147. 1885. 

Silurian. Pennsylvania. 
Oneida conglomerate. White. N. Y. State Mus., 5l8t Ann. Rept., vol. i, p. r36. 
1899. 

Ordovician. New York. 
Oneonta sandstone. Hall. N. Y. State Geol., Rept. for 1885, p. 11. 1886. 

Devonian. New York. 
Oneonta sandstone, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 93, 108. 1893. 

Devonian. New York. Included in Portage. 
Oneonta, Prosser. Am. Jour. Sci., 3d ser., vol. xlvi, pp. 213-215. 1893. 

Devonian. New York. 
Oneonta formation, Darton. Am. Jour. Sci., 3d ser., vol. xlv, pp. 203-209. 1893. 

Devonian. New York. 
Oneonta, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 238-240. 1894. 

Devonian. New York. 
Oneonta, Clarke. N. Y. State Geol., 13th Ann. Rept., p. 557. 1894. 

Devonian. New York. Exact syn. Portage. 
Oneonta sandstones, Clarke. N. Y. State Geol., 15th Ann. Rept., pp. 27-82. 1897. 

Devonian. New York. 
Oneota limestone, McGee. U. S. Geol. Surv., 11th Ann. Rept, pt. i, p. 331. 1891. 

Silurian. Iowa. 
Oneota limestone. Hall. Geol. Soc. Am., Bull., vol. iii, p. 464. 1892. 

Ordovician. Minnesota. Exact syn. Lower Magnesian. 
Oneota, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 341. 1892. 

Ordovician (?) . Minnesota. Included in Magnesian series. 
Oneota, Keyes. Iowa Geol. Surv., vol. i, pp. 21-24. 1893. 

Silurian. Iowa. Included in Lower Silurian. Exact syn. Lower Magnesian lime- 
stone. 



306 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bill.191 

Onondaga liiiK*Htoiie, Darton. X. Y. StaU^ (uh)!., 13th Ann. Rept, pp. 203, 207-208, 
242-243,301. 1894. 
Devonian. Xew York. Exat't Hyn. Corniferous. 
Onondaga linieHtone, Ries. N. Y. StaU* (ieol., 15th Ann. Ri»pt., p. 403. 1897. 

Devonian. New York. P^xaet svn. (-orniferous. 
Onondaga limentone, Luther. N. Y. State (ireol., 16th Ann. Rept., p. 214. 1899. 

Devonian. New York. 
Onondaga linieHtone, Weller. N. J. (ieol. Surv., Rept., 1899, p. 45. 1900. 

Devonian. New Jerwev. 
Ontario divinion, Mather, (ieol. of N. Y., pt. i, pp. ,'i53-3(55. 1843. 

Paleozoic. New York. Ineludeii in Shawans^nk grit. 
Ontario divi.^ion, Eiunion«. Agric. of N. Y., vol. i, pp. 141-152. 1846. 

New York. Includen Medina sandstone, Clinton group, and Niagara group. 
Ontario group. Chapman. Can. Inst., n«w ner., vol. viii, p. 186. 1863. 
Silurian. Canada. Included in Lower Siluraina. Includes Birdseye and Black 
River formation, Trenton, Utica, and Hudson River. 
Ontario group, (Chapman. A Popular and Practical Exposition of the Minerals and 
(ieology of Cana<la, p. 157, Toronto. 1864. 
Silurian. Canada. Includes Hudson River, Utic«, Trenton, Birdseye, and Black 
River. . 
Untarlan »yt*tom, l^wson. Geol. Soc. Am., Hull., vol. i, p. 177. 1889. 

Archean. Ontario. 
Ontarian, Dana. (ieol. Soc. Am., Bull., vol. i, p. 41. 18S9. 

Upj)er Silurian. New York, etc. Exact syn. Ontario division of Mather. 
Ontarian, Winchell and (irant. Minn. (^eol. and Nat. Hist. Surv., Final Rept, 
vol. iv, p. 195. 1899. 
Minnesota. Includes Cout<*hiching and Keewatin. 
Ontaric, Clarke and Schuchert. Science, new ser., vol. x, p. 876. 1899. 

Silurian. New York. Exa<t svn. Siluric. 
Oostanala series, S})encer. (ia. Geol. Surv., The Paleozoic Group, pp. 34, 37, 77, 
87, 99, 108, 112, 115, 119, 123, 130. 1893. 
Cambrian, (ieorgia. Included in Middle and Upper Cambrian. Includes Knox 
or Connesauga shale, and Knox or Rome sandstone. 
Ophian, Witney and Wads worth. Harvard Mus. Comp. Zool. , Bull. , vol. vii, 1880-84, 
p. 562. 1884. 
Included in Azoic system. 

Orange Martin limestone, Owen. (ieol. Reconn. Indiana, Rept. 1859-60, p. 126. 
1862. 

Carl)oniferous. Indiana. Included Eocarboniferous limestone. 
Orange Sand group, Safford. Geol. Reconn. of the State of Tenn., Ist Rept., p. 162. 
1856. 

Cretaceous. Tennessee. 
Orange Sand group, Har})er. Prelim. Rept. Geol. and Agric. Miss., p. 107. 1857. 

Mississippi. Included in rocks overlying the Cretaceous formation. 
Orange Sand formation, Hilgard. Rept. on Cieol. and Agric, Miss., pp. 4-46. 186(1 

(Quaternary. Mississippi. 
Orange Sand, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, p. 369. 1864. 

Tertiary. Tennt-ssee. Exact syn. La (irange group. 
Orange Sand, Hilgard. Am. Jour. Sci., 2d ser., vol. xli, pp. 311-318; vol. xlii, 
p. 346. 1866. 

Quaternary. Mississippi. 
')range Sand or La (irange group, Safford. Geol. of Tenn., pp. 424-428. 1869. 

Tertiarv. Tennessee. 



WEEKS.] ONONDAGA OREAD. 307 

Orange Sand formation, Hilgard. Am. Jour. Hci., 2d ser., vol. xlviii, p. 334. 1869. 

Quaternary. Louisiana. 
Orange Sand, Hilgard. Am. Jour. Sci., 2d ser., vol. xlvii, pp. 77-88. 1869. 

Quaternary (?). Louisiana. 
Orange Sand, Hilgard. Am. Jour. Sci., 3d ser., vol. ii, pp. 398-401. 1871. 

Pleistocene. Mississippi Valley and (iulf region. 
Orange Sand, Killebrew and Safford. Resources of Tenn., p. 45. 1874. 

Quaternary. Tennessee. 
Orange Sand, Hilgard. Smithsonian Inst. Contr., vol. xxiii, no. 2, p. 3. 1881. 

Tertiary. Louisiana. 
Orange Sand, Salisbury. Am. Jour. Sci., 3d ser., vol. xlii, pp. 252-253. 1891. 

Tertiary. Illinois. 
Orange Sands, Chamberlin and Salisbury. Am. Jour. Sci., 3d ser., vol. xli, 
pp. 364-377. 1891. 

Pre-Pleistocene. Mississippi Valley. 
Orange Sand, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Pliocene. Gulf and Atlantic States. Included in Floridian epoch, Lafayette group. 

Part syn. Lafayette group. 
Orangeburg formation, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 344. 

1898. 

Tertiary. Georgia, Alabama. Included in Claibornian stage. Eocene. 
Orajigreville shale. White. 2d Pa. Geol. Surv., Rept. Q*, pp. 89-90. 1881. 

Carboniferous. Pennsylvania. Included in Meadville group. 
Orangeville shale, Lesley. 2d Pa. Geol. Surw, Final Rept., vol. iii, pt. i, p. 1765. 
1895. 

Carboniferous. Pennsvlvania. Included in No. 10, Pocono. 
Orbitoides limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 57. 1890. 

Tertiary. Arkansas. 
Orbitoides limestone, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 101. 
1892. 

Tertiary. Florida. Included in Vicksburg group. 
Orbitoitic, Heilprin. Phil. Acad. Nat. Sci., Proc, 1882, pp. 183-184. 1882. 

Oligocene. Exact syn. Vicksburg beds, Florida beds. 
Orbitoitic, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, pp. 11^-120. 1884. 

Tertiary. Included in Oligocene. i)xact syns. Vicksburg beds and Florida 
Nummulitic beds. 
Orbitolite limestone, Lyell. Am. Jour. Sci., 2d ser., vol. iv, pp. 186-191. 1847. 

Eocene. Alabama. Exact syn. Nummulite limestone. 
Orca series, Schrader. U. S. Geol. Surv., 20th Ann. Rept., pt. vii, p. 404. 1900. 

Upper Cretaceous or Tertiary. Alaska. 
Orchard gneiss, Kemp. Am. Inst. Mg. Engrs., Trans., vol. xxvii, p. 178. 1898. 

Archean. New York. 
Oread limestone, Haworth. Kan. Univ. Quart., vol., ii, pp. 123-124. 1894. 

Carboniferous. Kansas. 
Oread limestone, Haworth. Am. Jour Sci., 3d ser., vol. 1, p. 461. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Oread limestone, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 138, 161, 166. 1896. 

Carboniferous. Kansas. 
Oread limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, pp. 60, 71, 114-116. 1896. 

Carboniferous. Kansas. Includes the heavy limestone at Atchison. 
Oread limestone, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 62-64, 93, 94, 104. 
1898. 

Carboniferous. Kansas. Included in Douglas formation. 



308 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull-M. 

OreodoxL, Wortman. Am. Mus. Nat Hist., Ball., vol. \% p. 97. 1893. 

Tertiai^\ Ineludetl in White River or Lower Miocene. 
Oriskany sandstone. Hall. N. Y. Geol. Sorv., 3d Ann. Rept, pp. 308-309. 1839. 

Devonian. New York. 
Oriskany, Conrad. Phil. Acad. Nat Sci., Jour., vol. viii, pp. 232-233. 1842. 

Middle Silurian. New York. 
Oriskany sandstone, Vanoxem. Geol. of N. Y., pt iii, pp. 123-127. 1842. 

Paleozoic. New York. Includes White sandstone. Exact syn. No. 7, PennByl- 
vania Survey. 
Oriskany sandstone, Mather. Geol. of N. Y., pt i, pp. 342-343. 1843. 

Paleozoic. New York. Included in Helderberg division. 
Oriskany sandstone, Hall. Geol. of N. Y., pt, iv, 4th Greol. Dist., pp. 18, 140-148. 
1843. 

Paleozoic. New York. lnclude<l in New York s\*^tem. Includes No. 7, Pennsyl- 
vania Survev. 
Oriskany sandstone, Euunons. Agric. of N. Y., vol. i, pp. 168-171. 1846. 

New York. Included in Helderben? division of New York system. 
Oriskany sandstone, Hall. Pal. of N. Y., vol. ii, pt. i, pp. 421-425. 1859. 

Devonian. New York. 
Oriskany sandstone, Hitchcock. Prelim. Rept. Geol. of Maine, vol. i, pp. 243-245. 
1861. 

Devonian. Maine. 
Oriskany formation, Logan. Can. Geol. Surv., Rept 1843-63, pp. 359-361. 1863. 

Devonian. Canada. Included in tapper Helderberg group. 
Oriskany formation, Chapman. Can. Inst, new ser., vol. viii, pp. 440-441. 1863. 

Devonian. Canada. 
Oriskany sandstone, Dawson. Am. Jour. Sci., 2d ser., vol. xxxy, pp. 314-319. 1863. 

Devonian. Canada. 
Oriskany sandstone, Wort hen. 111. Geol. Surv., vol. i, pp. 124-126. 1866. 

Devonian. Illinois. 
Oriskany group, Worthen. 111. Geol. Surv., vol. iii, pp. 24-25, 62. 1868. 

Devonian. Illinois. Includes Clear Creek limestones. 
Oriskany, Cook. Cieol. of N. J., pp. 160-161. 1868. 

Devonian. Nej*' Jersey. 
Oriskany sandstone, Shumard. Mo. C^eol. Surv., Repts. 1855-1871, p. 296. 1873. 

Devonian. Missouri. 
Oriskany, Winchell. Ohio Geol. Surv., vol. i, pt i, p. 603. 1873. 

Devonian. Ohio. 
Oriskany, Newberry. Ohio Geol. Surv., vol. i, pt, i, pp. 67, 140. 1873. 

Devonian. Ohio. 
Oriskany, Newberry. Ohio l^eol. Sur\., vol. ii, p. 193. 1874. 

Devonian. Ohio. 
Oriskany, Winchell. Ohio Geol. Surw, vol. ii, pp. 301, 328, 340, 379. 1874. 

Devonian. Ohio. 
Oriskany sandstone, Broadhead. Mo. Cieol. Surv., Rept 1873-74, p. 27. 1874. 

Silurian. Missouri. Included in Upper Silurian. 
Oriskany, Hotchkiss. A Geographical and Political Summary of Virginia, p- 22. 
1876. 

Upper Silurian. Virginia. Exact syn. Meridian. (Formation vii, Rogers.) 
Oriskany, Ashbumer. Am. Phil. Soc., Proc,, vol. xvi, pp. 529, 554. 1877. 

Devonian. Apjialachian region. Exact syn. Meridian. 
>rifikany sandstone, Hitchcock. Cieol. of N. H., pt ii, p. 208. 1877. 

Devonian. New Hampshire. 



WEEKS] OREODON ORI8KANY. 309 

Oriskany, Newl)erry. Ohio <ie«)l. Surv., vol. iii, p. 9. 187S. 

Devonian. Ohio. 
Oriskany, Piatt. 2d Pa. Geol. Surv., Kept. T, pp. 35-37. 1881. 

Silurian. Pennsylvania. 
Oriskany group, Miller. Gin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 267. 1881. 

Silurian. 
Oriskany, White. 2d Pa. Geol. Surv., Rept. G«, pp. 122-127. 1882. 

Silurian. Pennsylvania. Exact syji. No. vii. 
Oriskany, Stevenson. 2d Pa. Geol. Surv., Rept. T», pp. 86-86. 1882. 

Silurian. Pennsylvania. 
Oriskany, Hall, Am. Assoc. Adv. Sci., Proc, vol. xxxi, p.J50. 1883. 

Devonian. Eastern United States. 
Oriskany, White. 2d Pa. Geol. Sur>'., Rept. G^ pp. 85-87. 1883. 

Silurian. Pennsylvania. Exact syn. No. 7. 
Oriskany sandstone, Linney. Ky. Geol. Surv. (Proctor), Geol. of Clark and Mont- 
gomery Cos. 1884. 

Devonian. Kentucky. 
Oriskany, Ewing. 2d Pa. Geol. Surv., Rept. T*, pp. 430-432. 1884. 

Devonian. Pennsylvania. Exact syn. No. 7. 
Oriskany, White. 2d Pa. Geol. Surv., Rept. T*, pp. 117-121. 1885. 

Silurian. Pennsylvania. Includes Stormville shale. 
Oriskany, Claypole. 2d Pa. Geol. Surv., Rept. F^ pp. 62-64. 1885. 

Devonian. Pennsylvania. 
Oriskany, Linney. Ky. Geol. Surv., Geol. of Bath Co., p. 22. 1886. 

Devonian. Kentucky. 
Oriskany group, Miller. N. A. Geol. and Pa., p. 58. 1889. 
Oriskany, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 52. 1890. 

Silurian. Arkansas. 
Oriskany, D'Invilliers. 2d Pa. Geol. Surv., F*, pp. 51-54. 1891. 

Devonian. Pennsylvania. Includes Stormville shale. Exact syn. No. 7. 
Oriskany series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog. 1891. 

Devonian. Georgia. 
Oriskany, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pt. i, pp. 1034-1142. 1892. 

Devonian. Pennsvlvania. Includes Cauda-Galli and Schoharie grits. 
Oriskany, Williams and Clark. Maryland: Its Resources, Industries, and Institu- 
tions, p. 70. 1893. 

Devonian. Maryland. Part. syn. No. VII. 
Oriskany, Brumell. Geol. Soc. Am., Bull., vol. iv, pp. 227, 229. 1893. 

Devonian . Ontario . 
Oriskany sandstone, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 203-204, 210- 
211, 245, 303. 1894. 

Devonian. New York. 
Oriskany quartzite, Darton. (tooI. Soc. Am., Bull., vol. viii, pp. 367, 375. 1894. 

Devonian. New York. 
Oriskany sandstone, Ries. N. Y. State Geol., 15th Ann. Rept., vol. i, p. 402. 1897. 

Silurian. New York. 
Oriskany sandstone, Luther. N. Y. State Geol., 15th Ann. Rept., pp. 274-275. 1897. 

Silurian. New York. 
Oriskany sandstone, Luther. N. Y. State Geol., 16th Ann. Rept., p. 213. 1899. 

Silurian. New York. 
Oriskany, Clark. Md. Geol. Surv., vol. iii, p. 100. 1899. 

Devonian. Maryland. Exact syn. Monterey. 



i 



310 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.191 

Oriflkanian, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Devonian. N(»w York. Includt»H Orinkany IkhIs. 
Oriskany »)e<lH, Weller. X. J. (ieol. Surv., Kept., 1899, p. 42. 1900. 

Devonian. New Jernev. 
Oriskany, Schuchert. (ieol. Soc. Am., Bull., vol. xi, pp. 289-331. 1900. 

Devonian, (ieneral. 
Oriskany formation, O'Harra. Md. (Jeol. Surv., Allegany (bounty, p. 98. 1900. 

Devonian. Maryland. 
Orthaxdax tol, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 113. 1892. 

Tertiary. Florida. Include<l in Miocene. 
Orting gravels, Willis. . Geol. Soc. Am., Bull., vol. ix, pp. 146, 147. 1898. 

Pleistocene. Washington, 
Osage group, Branner. Ark. Geol. Surv., 1888, vol. iv, p. xiii. 1888. 

Carboniferous. Arkansas. Included in Lower (carboniferous or Mississippian 
series. Includes Batesville sandstone, Fayetteville shale, Wyman sandstone, 
and Boone chert and limestone. Part. syns. Keokuk, Burlington. 
Osage group, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 35. 1890. 

Carl)oniferous. Arkansas. Included in Lower Carboniferous. 
Osage group, Williams. U. S. Geol. Surv., Bull. No. 80, p. 169. 1891. 

Carboniferous. Included in Mississippian series. Includes Keokuk and Burling- 
t(m. 
Osage limestone, Keyes. Geol. Soc. Am., Bull., vol. Hi, pp. 283, 290. 1892. 

Lower Carboniferous. Missouri. Included in Mississippian. Includes Burling- 
ton, Keokuk, and Warsaw. 
Osage group, Broadhead. Am. (ieol., vol. xii, p. 84. 1893. 

Carboniferous. Missouri. Included in Mississippian series. Includes Keokuk 
and Burlington. 
Osage limestone, Keyes. Mo. (ieol. Surv., vol. vi, pp. 331, 366, 375. 1894. 

Cambrian. Missouri. Included in (xasconade limestone, Ozark series. Part. syn. 
St. Joseph limestone. 
Osage City shales. Ha worth. Am. Jour. Sci., 3d ser., vol 1, p. 461. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Osage City shales, Haworth. Kan. Univ. (ieol. Surv., vol. i, p. 162. 1896. 

Carboniferous. Kansas. 
Osage shales, Bennett. Kan. Tniv. (ieol. Surv., vol. i, pp. 119-120. 1896. 

Carboniferous. Kansas. 
Osage group, Keyes. Am. (^eol., vol. xxi, pp. 229-235. 1898. 

Carboniferous. Mississippi Valley. Part. syn. Augusta. 
Osage City sliales, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 29. 1898. 

Carboniferous. Kansas, 
Osage limestone, Haworth. Kan. Univ. (ieol. Surv., vol. iii, p. 73. 1898. 

Carl)oniferous. Kansa**. 
Osage shales, Haworth. Kan. Tniv. Geol. Surv., vol. iii, pp. 65, 67, 73, 91,94, 105. 
1898. 

Carboniferous. Kansas. Included in Shawnee formation. Includes Burlinganie 
shales. 
Osborne limestone, Cragin. Colo. Coll. Stud., vol. vi, p. 91. 1896. 

Cretaceous. Kansas. Included in Fort Hays, Lower Niobrara and Benton. 
Osborne limestone, Williston. Kan. Univ. Quart., vol. iv, p. 251. 1896. 

l^pper Cretaceous. Carboniferous. Kan.«as. P^xact syn. Fort Hays beds. 
-Ola till (clays), Willis. Geol. Soc. Am., Bull., vol. ix, pp. 126, 143. 1898. 
itocene. Washington. 



WEEKS.] ORISKANY OTTAWA. 311 

Osceola till, Willis and Smith. U. S. Geol.Surv., Geol. Atlas of IT. S., Folio No. 54. 
1899. 
Pleistocene. Washington. 
Osgood beds, Foerste. Indiana Dept. Geol. and Nat. Res., 21st Ann. Kept., 1896, 
pp. 217, 227. 1897. 
Upper Silurian. Indiana. 
Osgood beds, Foerste. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 1897, 
pp. 197, 207, 208. 1898. 
Upper Silurian. Indiana. 
Osgood beds, Foerste. Indiana Dept. Geol. and Nat. Res., 24th Ann. Rept., pp. 78- 
80. 1900. 
Silurian. Indiana, Kentucky, and Ohio. Included in Middle Silurian. Part. syn. 
Crab Orchard shales of Kentucky, and Niagara shale of Ohio. 
Ostrea Sellaefonnis beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 343. 
1898. 
Tertiary. Alabama. Included in Olaibornian stage. Eocene. 
Oswegatchie series, Smyth. Geol. Soc. Am., Bull., vol. vi, p. 266. 1895. 

Pre-Cambrian(?). New York. 
Oswego sandstone, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 100, 108, II61. 1893. 

Silurian. New -York. 
Oswego limestone, Haworth and Kirk. Kan. Univ. Quart., vol. ii, pp. 105, 106, 107, 
116. 1894. 
Carboniferous. Kansas. 
Oswego limestone, Haworth. Am. Jour. Sci., 3d ser., vol. 1, pp. 456-457. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Oswego limestone. Kirk. Kan. Univ. Geol. Surv., vol. i, pp. 73-74. 1896. 

Carboniferous. Kansas. 
Oswego limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, pp. 88-91. 1896. 

Carboniferous. Kansas. 
Oswego limestones, Adams. Kan. Univ. Geol. Surv., vol. i, p. 21-22, 1896. 

Carboniferous. Kansas. 
Oswego limestone, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 40-43, 151-152, 165. 
1896. 
Carboniferous. Kansas. 
Oswego limestones, Haworth. Kan. Univ. GeolrSurv., vol. iii, pp. 30-36, 85, 88, 
92, 94, 99. 1898. 
Carboniferous. Kansas. Included in Marmaton formation. Includes Cement 
rock and Fort Scott limestone. 
Oswego, Bain and Leonard. Geol. Soc. Am., Bull., vol. x, p. 11. 1899; 

Upper Carboniferous. Kansas. Included in Henrietta and Des Moines of Missouri. 
Oswegan, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 
Silurian. New York. Includes Oneida conglomerate, Shawangunk grit, and 
Medina sandstone. 
Otis beds, Norton. Iowa Acad. Sci., Proc, vol. i, pt. iv, p. 23. 1894. 

Devonian. Iowa. 
Otisl)ed8, Norton. Iowa Geol. Surv., vol. iv, pp. 155-156. 1895. 

Devonian. Iowa. Included in Wapsipinicon stage. 
Otis beds, Udden. Cin. Soc. Nat. Hist., Jour., vol. xix, no. iii, p. 93. 1897. 

Devonian. Illinois. 
Ottawa gneiss, Selwyn. Can. Geol. Surv., Rept. 1877-78, p. lOA. 1879. 

Canada. 
Ottawa beds, Ami. Ottawa Field Nat. Club, Trans., 1879-83, vol. i, pp. 63-65. 
1880-83. 
Silurian. Canada. Included in Utica. 



812 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (bull.191. 

Ottawa limcfitoiu*, liawortli. Kan. Tiiiv. Quart, vol. ii, pp. 121-122, 125. 1894. 

(.'arlK)iiiforou8. KaiiHan. 
Otter Creek Hhale, Weed. (n^)l. Sck-. Am., Hull., vol. iii, p. 'M}7. 1892. 

Carlxmiferous. Montana. 
Otter shale. Weed. U. S. (ieol. Hurv., 20th Ann. Kept., pt. iii, p. 295. 1900. 

Carboniferous. Montana. Include<l in Quadrant j^roup. 
Otterdale sandstone, Shaler and Wood worth. U. S. Geol. Surv., 19th Ann. Rept, 
pt. ii, pp. 435-436. 1899. 
Juratrias. Virginia. Included in ('hesterfield group. Exact syn. Araucarioxy- 
lon beds. 
Ouray limestone, Girty. V. R. (ieol. Surv., 20th Ann. Rept., pt. ii, pp. 31-38. 1900. 

Devonian. Colorado. 
Ozxnoor sandstone, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1889. 

Lower Carboniferous. Tennessee and Alabama. 
Ox moor sandstone, Hayes. Ala. (ieol. Surv., Bull. No. 4, p. 47. 1892. 

Carboniferous. Alabama. Included in Mississippian series. 
Oxmoor, Gibson. Ala. Geol. Surv., Rept. on Murphrees Valley, p. 22. 1893. 

Carboniferous. Alabama. Included in Eocarboniferous. Exact syn. Lagrange. 
Oxmoor sandstone, Hayes. U.S. Geol. Surv., Geol. Atlas of U. S., Folio No. 35. 
1896. 
Carboniferous. Alabama. 
Oxmoor shale and sandstone, McCalley. Ala. Geol. Surv., Rept. on Valley regions, 
pt. ii, pp. 54-55, 246-249, 299-306, 442-451, 477-478, 504-505, 527-531, 645-648 
745-748,811-812. 1897. 
Carboniferous. Alabama. Included in Upper Carboniferous. Exact syn. Floyd 
shale and Hartselle sandstone. 
Ozark series, Broadhead. Am. Geol., vol. viii, p. 33. 1891. 

Cambrian and Silurian. Missouri. Includes First Magnesian limestone. First 
sandstone, Second Magnesian limestone, Second sandstone. Third Magnesian 
limestone. Third sandstone, and Fourth Magnesian limestone. 
Ozark series, Winslow. Mo. Geol. Surv., vol. ii, pp. vii, 12,17,93. 1892. 

Cambrian. Missouri. 
Ozark series, Winslow. Am. Jour. Sci., 3d ser., vol. xlv, pp. 221-226. 1893. 

Cambrian and Silurian. Missouri. 
Ozark series, Broadhead. Am. Jour. Sci., 3(1 ser., vol. xlv, pp. 57-60. 1893. 

Cambro-Siiurian. Missouri. 
Ozark series, Nason. Am. Geol., vol. xii, p. 141. 1893. 

Cambrian. Missouri, Arkansas. 
Ozark series, Keyes. Mo. Geol. Surv., vol. iv, pp.30, 32-37. 1894. 
Cambrian. Missouri. Includes First Magnesian limestone, Sacchoroidal sand- 
stone. Second sandstone, Third Magnesian limestone. Third sandstone, Fourth 
limestone. 
Ozark stage, Keyes. Mo. Geol. Surv., vol. vi, pp. 378-385. 1894. 

Cambrian. Missouri. 
Ozark sand, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain 
ofAla., p. 56. 1894. 
Pleistocene. Alabama. 
Ozark series, Keyes. Jour, of Geol., vol. iii, pp. 519-526. 1895. 

Cambro-Silurian. Missouri. 
Ozark sandstone, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Included in Sebastian stage. 
Ozark series, Shepard. Mo. Geol. Surv., vol. xii, p. 49. 1898. 

Silurian. Missouri. Includes First Magnesian limestone. First sandstone. Second 
Magnesian limestone. Second sandstone, and Third Magnesian limestone. 



WEEKS] OTTAWA PAMUNKEY. 313 

Ozarkian, I^ Conte. Am. Assoc. Adv. Sci., Pr<x\, vol. xlviii, p. 229. 1898. 

Pleistocene. (Jeneral. 
Ozarkian, 1^ Conte. Jour, of (ieol., vol. vii, pp. 525-544. \H\i{K 

Pleistocene. 
Packer clay, Williams. Geol. Hoc Am., Bull,, vol. v, pp. 280, 286. 1894. 

Pleistocene. Pennsylvania. 
Pcu^ksaddle series, Durable. Texas Oeol. Surv., 1st Ann. Rept., pi. iii, p. Ivii. 1890. 

Algonkian. Texas. Included in Texas system. 
Paine shale, Weed. U. 8. Geol. 8urv., 20th Ann. Rept., pt. iii, p. 290. 1900. 

Carboniferous. Montana. Included in Madison group. 
Paint Bock bed, Drake. Texas Geol. Surv., 4th Ann. Rept, pp. 428-429. 1893. 

Carboniferous. Texas. Included in Albany division. 
Palisades conglomerate, Spurr. U. 8. Geol. 8urv., 18th Ann. Rept., pt. iii, p. 199. 
1898. 

Tertiary. Alaska. 
Palmer gneiss. Van Hise and Bay ley. U. S. Geol. Surv., 15th Ann. Rept., p. 514. 
1895. 

Archean. Lake Superior region. 
Palmer gneiss. Van Hise. Geol. Roc. Am., Bull., vol. ix, p. 807. 1898. 

Archean. Michigan. 
Palo Duro, Scott. Geol. Soc. Am., Bull., vol. v, p. 595. 1894. 

Tertiary. Texas. Included in Loup Fork and Upper Miocene. 
Palo Duro beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 338. 1898. 

Tertiary. Texas. Exact syn. Goodnight beds. 
Paluxy sands. Hill. Geol. Soc. Am., Bull., vol. ii, pp. 503, 510. 1891. 

Cretaceous. Texas. Included in Fredericksburg division. 
Paluxy sand, Taff. Texas Geol. Surv., 3d Ann. Rept., pp. 292-294, 338-340. 1892. 

Cretaceous. Texas. Included in Bosque division of Lower Cretaceous. 
Paluxy sands. Hill. Artesian Invest., Final Rept., pt. iii, p. 84, 52d C'ong., Ist Sess. 
Ex. Doc. 41, pt. 3. 1892. 

Cretaceous. Texas. Included in Trinity division. 
Paluxy beds, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 368-370. 1893. 

Cretaceous. Texas. 
Paluxy stage. Durable. Geol. Soc. Am., Bull., vol. vi, p. 378. 1895. 

Cretaceous. Texas. Included in Lower Cretaceous. 
Pamiinkey, Darton. Geol. Soc. Am., Bull., vol. ii, pp. 431, 435, 439. 1891. 

Tertiary. Virginia and Maryland. Included in Eocene. 
Pamunkey formation, McGee. V. 8. Geol. Surv., 12th Ann. Rept., pt. i, p. 418. 
1891. 

Tertiary. Coastal Plain. 
Pamunkey, McGee, Williams and Darton. Int. Cong, of (xeol., 5th Sess., pp. 237, 
247. 1893. 

Tertiary. Maryland, District of Columbia. 
Pamunkey, Williams and Clark. Maryland; Its Resources, Industries and Insti- 
tutions, pp. 77-80. 1893. 

Tertiary. Maryland. Included in Eocene. 
Pamunkey, Darton. U. 8. Geol. Surv., Geol. Atlas of U. 8., Folios No. 13, 23. 
1894, 1896. 

Included in Eocene. Virginia and Maryland. 
Pamunkey, Darton. U. 8. Geol. Surv., Bull. No. 138, pp. 119, 125, 163. 1896. 

Tertiarv. Atlantic Coastal Plain. Included in Eocene. 
Pamunkey formation, Clark. Am. Jour. 8o\, 4th ser., vol. i, pp. 365, 366. 1896. 

Eocene. Virginia and Maryland. Includes Aquia Creek and Woodstock stages. 



314 NORTH AMKRILAN QEOLOOIO FORMATION NAMES. [Bt-LL.lSl. ' 

1'aiiiiinkey formation, Clark. Md. <!eol. Siir\-., vol. i, pp. 156, 105. 1897. I 

Tertiary, Maryluixl. IhcIucIhI in PxHfiic. Ini-tuilti* Aijuia Creek atage, \Vo<«i- 

I'aiiiunkey forniation, l>all. V. S. Ueol. Snrv., IKIh Ann, Kept., |it. ii, p. 346. 1898. ' 

Tertiary. MarylamI, Virginia. Ipcluileil in Eocene. I 

PaDBma I'onglotnerale, Carll. 2<l Pa. Geo). Surv., Hept. I', pp. 57-79. 1880. 

Devonian. Peniuylvaniaand Xew York. 
Faiiama cimgiuinerate, Carll. 2d I'a. Ge<)i. Surv., Rept. I', pp. IWi-MS. 1883. 

CarlKiniferoiis. Pennsylvania. 
rahaniA eongl<jtnerat«, T>(>t<ley. 2<\ Pa. <ieol. >Snrv., Final Itept., vol. ii, pp. 1519- I 
iri2». 1892. 

Devonian. Penni^ylvania. Inchiiled in Venan);n. 
Panama conglomerate, Kandall. Itef^nbt Univ. of S. Y., 47th Ann. Rept., pp. 713- 
714. 18(M. 

New York. 
Panola formation, (.'wnplx'll. U. H. Geol. Snrv.,<ieol. Alias of V. S.. Folios Nos. 
4«, 47. 189H. 

Si hi ro- Devonian. Kentucky. 
Pauthar Creek Mial U^Ih, .\Hhlnirnpr. al Pa. (ie()l. Surv., Rept. A', pp. 83-107. 
1883. 

CarlKiniferonf. Pennsylvania. 
Para-Uiocene, Diittim. Kmitlieonian Inst., Kept., 1K77, p. 78. 1877 (1678). 

Tertiary. Utali. Indnded in MiiH-ene. 
Parian (jroiip (ol.ler), Wall and Hawkins, (iwil. of Trinidad, pp. .t3-35. 1860, 

Triniilad. 
Parian group (newer). Wall aixl Sawkins. lieol. of Trinidad, pp. 35-60. 1860. 

Tertiary. Trinidai). In<'lu<l(!>< Xariva, Naparima, Tatnana, Caroni, and Moruga 

Park sliale, AVeed. V. S. (ier.l. Snrv., 20th Ann. Itept., pt. iii, p. 286. 1900. 

Cainbriaii. Montana. 
Parka Kountain Ih'cI, Drake. Texas fteol! Snr\\, 4th Ann. Rept., p. 410. 1893. 

L'arl)oniferciuH. Texas. Incln<le*l in Cisi'ii division. 
Parkvillo limeHtone, (iallaher. Mo. Ceol. Surv., Bien. Rept., p. 51. 1898. 

L'pjMT CarlKinifenjus. MisMuri. luclndeil in t'piiorCoal Measures. 
Parkville ^hide, Keyes. Am. (ieol., vol. xxiil, p. 305. 1899. 

CarlioniferouH. Miiwiwippi Valley. Incluileil in MiiwouHan neries. 
Parkville slialex, Keyew. I.iwa Aiw'l, Soi., Pnx:, vol. vii, p. 87. 1900. 

Oar)M>iiifc-ri>iii>. MiHtissipjii Valley. Ini-luileil in Coal Measures. 
Parma sandxtone, Wini-liell. Mich, (leiil. Surv., Ist Bien. iiept Prog., pp. 112, IS. 
1801. 

nus. Michigan. 

rv.. Kept. State Koanl for 1891-92, p. 06. 

, WaltT-Stipply Papers, No. 30, pi. vi. IS9H. 

. Surv., M Ann. Repl., p. 216. ISS?. 

Stlrv.. Mon.. vol, xii, p. 61. 1886. 

nl. Surv., Mon.. vol. xxsi, pp. 13-22. 1898. 

ser., vol. xlvii. pp. 29.5-296. 1894. 





Michigan. 




Panua sandstone, 


, 1.1111... Mioh- 


V,<-.\ 


189:;. 






Carboniferoiit). 


MichiRi.l1. 






■ol.S 


Carlioiiiferous. 


MirhiRuii. 
Cnmions. 1' 

iex, Spurr. 
ido. 


s. <; 
r. s. 




An). Jour 


. S<.i. 




la. Include 


d in 



*^EKK8.] PAMUNKEY PAYETTE. 315 

E^ascagoula, Smith, Johnson and Langdon. Ala. Geol. fiiirv., Geol. of Coastal Plain 
of Ala., p. 91. 1894. 
Tertiary. Alabama. Included in Miocene. 
I^ascagoula clays, Dall and Stanley-Brown. Geol. Soc. Am., Bull., vol. v, p. 167. 
1894. 
Tertiary. Florida. 
^askapoo series, Tyrrell. Can. Geol. Surv., new ser., vol. ii, pp. 74E, 84E, 127E, 
135E-137E. 1887. 
Canada. Included in Laramie. Includes Porcupine Hills series. Willow (^reek 
series, and greater part of St. Marys River series of Dawson. 
Paso Robles formation, Fairbanks. Jour, of Geol., vol. vi, pp. 565-566. 1898. 

Tertiary. California. Included in late Miocene. 
'Patapsco, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Cretaceous. Maryland. 
F^atapsco formation, Clark and Bibbins. Jour, of Geol., vol. v, pp. 489-492. 1897. 

Cretaceous. Maryland. Included in Potomac grroup. 
Patoot series, White and Schuchert. Geol. Soc. Am., Bull., vol. ix, p. 360. 1898. 

Cretaceous. Greenland. Included in Upper Cretaceous. Part. syn. Montana. 
Fatiizent group, Heilprin. Phil. Acad. Nat. Sci., Proc., vol. xxxii, p. 23. 1880. 

Tertiary. Maryland. 
Patuxent formation, Clark. Md. Geol. Surv., vol. 1, pp. 156, 190. 1897. 

Juratrias. Maryland. 
Patuxent formation, Clark and Bibbins. Jour, of Geol., vol. v, pp. 481-485. 1897. 

Jurassic. Maryland. Included in Potomac group, Upper Jurassic. 
Paupack sandstone. White. 2d Pa. Geol. Surv., Rept. Ct^, p. 68. 1881. 

Devonian. Pennsylvania. Included in Catskill. 
Paupack sandstone, Lesley. 2d Pa. Geol. Surv., Final Kept., vol. ii, p. 158. 1892. 

Devonian. Pennsylvania. Included in Catskill, No. ix. 
PaT^huski limestone, Smith. Jour, of Geol., vol. ii, p. 199. 1894. 

Carboniferous. Indian Territory. Included in Upper Carboniferous. 
Paw Paw, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Indian Territory. Included in Washita division. Denison beds. 
Pawnee limestone, Swallow. Kan. Geol. Surv., Prelim. Kept., pp. 24-25. 1866. 

Carboniferous. Kansas. 
Pawnee limestone, Haworth. Am. Jour. Sci., 3d ser., vol. 1, p. 457. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Pawnee limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, pp. 92-93. 1896. 

Carboniferous. Kansas. 
Pawnee limestone, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 43-44, 153, 165. 
1896. 
Carboniferous. Kansas. 
Pawnee limestone, Haworth. Kan. Univ. Geol. Surv., vol. ill, pp. 37-39, 85, 92, 94. 
1898. 
Carboniferous. Kansas. Included in Marmaton formation. 
Pawnee, Bain and I^onard. Geol. Soc. Am., Bull., vol. x, p. 11. 1899. 

Upper Carboniferous. Kansas. Included in Henrietta, Des Moines series. 
Pawtucket shale, Shaler, Wood worth and Foerste. U. S. Geol. Surv., Mon., vol. 
xxxiii, p. 162. . 1899. 
Carboniferous. Rhode Island. Included in Cranston beds of Coal Measures. 
Payette formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 45. 
1898. 
Included in Neocene. Idaho. 
Payette formation, Lindgren. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 632-634. 
1898. 
Tertiary. Idaho. Included in Miocene. 



316 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [BrLL.i9l 

Payette formation, Knowlton. V. S. (ieol. Surv., I8th Ann. Rept., pt. iii, pp. 721-736. 
189H. 
Tertiary. Idaho. Include<l in Upper Miotiene. 
Payette formation, Lindgren. U. 8. Geol. Surv., 20th Ann. Kept., pt. iii, pp. 97-98. 
1900. 
Tertiary. Idaho. Included in Miocene. 
Peace Creek beds, Dall. Phil. Acad. Nat. Sci., Proc., 1891, p. 120. 1891. 

Tertiary. Florida. Included in Pliocene. 
Peace Creek, Scott. Geol. Soc. Am., Bull., vol. v, p. 595. 1894. 

Tertiary. Florida. Included in Pliocene. 
Peace River sandstone, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 47D- 
50D, 55D-58D. 1893. 
Cretaceous. Canada. Included m Colorado group. 
VeeLch Bottom slate, Frazer. Am. Inst. Mg. Engrn., Trans., vol. xii, p. 355. 1884. 

Silurian. Pennsylvania. 
Peach Bottom slate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. i, pp. 137-141. 
1892. 
Cambrian. Pennsylvania. 
Peach Bottom slate, Clark. Md. Geol. Surv., vol. ii, p. 215. 1898. 

Maryland. 
Pearl River series, Hitchcock. Geol. Soc. Am., Bull., vol. xi, pp. 31-34. 1900. 

Tertiary. Hawaiian Islands. Included in Pliocene. 
Pecurlette ash, Cragm. Colo. Coll. Stud., vol. vi, p. 54. 1896. 
Tertiary. Kansas. Included in Tule division of Cummins (Equus beds of Cope). 
Part. syn. Huerfano Park beds of R. C. Hills. 
Pedee bed, Ruffin. Agric. Surv. of S. C, 1843, p. 7. 1843. 

Cretaceous. South Carolina. 
Pelham, McCalley. Ala. Geol. Surv., Rept. on Valley regions of Ala., pt. i, pp. 27, 
29. 1896. 
Lower Silurian. Alabama. Included in Trenton. Includes Nashville. 
Pelham limestone, McCalley. Ala. Geol. Surv., Rept. on Valley regions, pt. ii, pp. 
47-48, 118-119, 199-202, 264-272, 336-342, 464-466, 496-^, 521-525, 639-642, 
725-729, 793-796. 1897. 
Silurian. Alabama. Included in Lower Silurian. Exact syn. Hayes's Chicka- 
mauga limestone and Rockmart slate. 
Pelham saxonite, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pi. xxxiv. 1898. 

Carboniferous. Massachusetts. 
Pelham quartzite, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 45-47. 1898. 

Cambrian. Massachusetts. 
Pelican shale, McC'Onnell. Can. Geol. Surv., new ser., vol. v, pt. i, p. 29D. 1893. 

Cretaceous. Canada. Included in Colorado group. 
Pelican sandstone, McConnell. Can. (ieol. Surv., new ser., vol. v. pt. i, pp. 28D-29D. 
1893. 
Cretaceous. Canada. Included in Colorado group. 
Pella beds. Bain. Am. Geol., vol. xv, p. 318. 1895. 

Carboniferous. Iowa. Included in Mississippian series, St. Louis. 
Pella beds, Bain. Iowa Geol. Surv., vol. v, pp. 150-151. 1896. 

Carboniferous. Iowa. Included in St. Louis. 
Pelodian, Whitney and Wadsworth. Harvard Coll. Mus. Comp. Zool., Bull., vol. 
vii, 1880-84, p. 562. 1884. 
Included in Azoic system. 
Pemigewasset series, Hitchcock. Geol. of N. H., pt. ii, pp. 142-148. 1877. 
Eozoic. New Hampshire. Includes Conway granite, Albany granite, and Chocoma 
granite. Exact syn. Labrador system. 



WEEKS] PAYETTE PENOKEE. 317 

Pendleton sandstone, Cox. Indiana (leol. Surv., 8th, 9th, and 10th Ann. Repts. 
for 1876, 1877, 1878, p. 62. 1879. 
Indiana. 
Pendleton sandstone, Brown. Indiana Dept. Geol. and Nat. Hist., 14th Ann. Rept., 
1884, pp. 26, 34. 1884. 
Indiana. 
Pendleton sandstone, Thompson. Indiana Dept. Geol. and Nat. Hist., 17th Ann. 
Rept., 1891, p. 39. 1892. 
Indiana. 
Penningi^on shale, Campbell. U. S. Geol. Surv., Bull. No. Ill, p. 37. 1893. 

Carboniferous. Virginia. Included in Coal Measures. 
Pennington shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 
Carboniferous. Kentucky, Virginia, and Tennessee. 
Pennington scale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 27, 33. 
1896. 
Carboniferous. Tennessee. 
Pennington, Keith. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio No. 40. 1897. 

Carboniferous. Tennessee. 
Pennington shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 46, 47. 
1898. 
Carboniferous. Kentucky. 
Pennington shale, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S., Folios Nos. 53, 59. 
1899. 
Carboniferous. Tennessee. Included in Mississippian series. Exact syns. 
Bangor limestone, Pikeville and McMinnville folios. 
Pennsylvanian series, Branner. Ark. Geol. Surv., 1888, vol. iv, p. xiii. 1888. 

Carboniferous. Arkansas. Included in Carboniferous or Pennine. Includes 
Pennsylvanian series, Williams. U. S. Geol. Surv., Bull. No. 80, pp. 82-121. 1891. 
Carboniferous. Exact syn. Coal Measures. 
Millstone grit. 
Pennsylvanian series, Keyes. Iowa Geol. Surv., vol. i, pp. 80-123. 1893. 
Carboniferous. Iowa. Included in Upper Carboniferous. Includes Des Moines 
formation, Missouri formation. Exact syn. Coal Measures. 
Pennsylvanian slate, Keyes. Mo. Geol. Surv., vol. vi, p. 358. 1894. 

Cambrian. Missouri. Included in Ozark series. 
Pennsylvanian series, Keyes. Iowa Geol. Surv., vol. ii, pp. 91-98, 112 et seq. 1894. 

Carboniferous. Iowa. Includes Missourian and Des Moines formations. 
Pennsylvanian, Marbut. Mo. Geol. Surv., vol. xii, pt. ii, p. 323. 1898. 

Upper Carboniferous. Missouri. Includes Mol)erly sandstone and Des Moines 
series. (Middle and Lower Coal Measures.) 
Pennsylvanian series, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 53. 
1899. 
Carboniferous. Tennessee. Includes Lee formation, Bonair and Rockcastle (ton- 
glomerate lentils. 
Penokee, Irving. U. S. Geol. Surv., 3d Ann. Rept., p. 166. 1883. 

Archean. Michigan. Included in Huronian. Exact syn. Animikie, Marquette, 
and Menominee. 
Penokee series, Chamberlin. Geol. of Wis., vol. i, p. 81. 1883. 

Huronian. Wisconsin. 
Penokee, Van Hise. U. S. Geol. Surv., 10th Ann. Rept., p. 402. 1890. 

Algonkian. Wisconsin, Minnesota. Exact syn. Animikie. 
Penokee series, Irving and Van Hise. U. S. Geol. Surv., Mon., vol. xix. 1892. 
Algonkian. Lake Superior region. Includes Cherty limestone. Quartz slate mem- 
ber, and Iron-bearing member. Upper slate member. Exact syns. Animikie 
and Upper Original Huronian. Part. syn. Upper Huronian of Lake Superior 
region. 



818 NORTH AMERICAN GEOLOGIC FORMATION NAMP:S. (bull.191 

Penokee schists, Van Hist*. Int. Cong, of (ieol., 5th sees., pi. xiv. 1893. 

Algonkian. I^ke Sui)erior. Included in Iluronian. 
Penokee-Gogrebic series, Van Hise. Am. Jour. Sci., 3d ser., vol. xxxvii, pp. 32-33. 
1889. 
Michigan and Wisconsin. 
Penokee-Gogebic, Walcott. Geol. Soc. Am., Bull., vol. x, p. 222. 1899. 
Algonkian. Wisconsin, Michigan. Exact syns. Upper Huronian, Upper Mar- 
quette, and Western Menominee. Part. syn. Animikie. 
Pensauken, Salisbury. N. J. (ieol. Surv., Kept. 1894, pp. 57-60, 67-72. 1894. 

Pleistocene. New Jersey. Include<l in Yellow gravel. 
Pensauken formation, Salisbury. Geol. St)c. Am., Bull., vol. vi, p. 483. 1895. 

Tertiary(?). New Jersey. Included in Pliocene or Pleistocene. 
Pensauken formation, Salisbury. N. J. State Geol., Ann. Rept. for 1894, pp. 105- 
118. 1895. 
Tertiary. New Jersey. Exact syn. I^fayette. 
Pensauken formation, Salisbury. N. J. Geol. Surv., Kept., 1895, pp. 7-13. 1896. 

New Jersey. 
Pensauken formation, Salisbury and Knapp. N. J. Geol. Surv., Rept., 1896, pp. 4-13. 
1897. 
New Jersey. 
Pensauken formation, Salisbury. N. J. Geol. Surv., Rept., 1897, pp. 15-17. 1898. 

New Jersey. 
PentacrinuB beds, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., 
p. 623. 1879. 
Juratrias. Idaho, Wyoming. Included in Jurassic. 
Pentamerus limestone, Vanuxem. Geol. of N. Y., pt. iii, pp. 117-119. 1842. 
Paleozoic. New York. Includeii in New York system. Part. syn. No. vi, 
Pennsylvania Survey. 
Pentamerus limestone. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 144. 
1843. 
Paleozoic. New York. Included in New York system. Part. syn. No. vi, Penn- 
sylvania Survey. 
Pentamerus limestone, Mather. Geol. of N. Y., pt. i, pp. 346-349. 1843. 

Paleozoic. New York. Included in Ilelderberg division. 
Pentamerus limestone, Emmons. Agric. of N. Y., vol. i, pp. 166-167. 1846. 

New York. Included in Helderberg division of New York system. 
Pentamerus limestone, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 48. 1846. 
Silurian. New York. Included in Helderberg series of the New York system. 
Part. syn. Part of No. 6, Pennsylvania Survey. 
Pentamerus limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 52. 1890. 

Silurian. Arkansas. Included in Lower IIelderl)erg. 
Pentamerus limestone, Darton. N. Y. State (ieol., 13th Ann. Rept., pp. 246-247, 
305. 1894. 
Devonian. New York. Included in Helderl>erg. 
Pentamerus oblongus beds, Norton. Iowa (ieol. Surv., vol. iv, p. 128. 1895. 

Silurian. Iowa. Included in r[){)er Silurian. 
Pentremital limestone, Owen. Rept. (ieol. Reconn. State of Indiana in 1837, pp- 
20, 21. 1859. 
Indiana. lnclude<l in Sub-carboniferous limestone. 
Pentremital limestone, Sinionds. Ark. Geol. Surv., 1888, vol. iv, pp. 83, 151. 1888. 

Carboniferous. Arkansas. Included in Lower Carboniferous. 
Pentremital limestone, Hopkins. Ark. Geol. Surv., 1890, vol. iv, pp. 91, 92. 1890. 
Carboniferous. Arkansas. Included in Lower Carboniferous. 



i 



WEEKS.] PENOKKE PHILADELPHIA. 319 

Peorian zone, Leverett. Jour, of (leol., vol. vi, pp. 244-249. 1898. 

Pleistocene. Illinois. Included in Toronto formation (?). 
Peorian soil, Leverett. U. 8. Geol. Surv., Mon,, vol. xxxviii, pp. 185-190. 1899. 

Pleistocene. Mississippi Valley. 
Peorian soil, Leverett. U. S. Geol. Burv., Geol. Atlas of U. 8., Folio No. 67. 1900. 

Pleistocene. Illinois, Indiana. 
Pepino formation, Hill. Nat. Geog. Mag., vol. x, p. 109. 1899. * 

Miocene. Porto Rico. Included in Upper Oligocene of Dall. 
Pequawket series, Hitchcock. Geol. of N. H., pt. ii, p. 235. 1877. 

Eozoic. New Hampshire. 
Perkasic shale, Lyman. 2d Pa. Geol. Surv., Final Kept., vol. iii, pt. ii, pp. 2608- 
2609. 1895. 

Juratnas. Pennsylvania. Included in New Red. 
Perry beds, Dawson, Rept. on Geol. of Maine, 1861, p. 251. 1861. 

Devonian. 
Perry sandstone, Hitchcock. Rept. on Geol. of Maine, 1861, p. 256. 1861. 

Devonian. Exact syn. Perry l^eds. 
Perry beds, Dawson. Rept. on Geol. of Maine, 1862, p. 403. 1862. 

Upper Devonian. Exact syn. Upper member of St. Johns series. 
Perry sandstone, Bailey and Matthew. Can. Geol. Surv., Rept., 1870-71, pp. 207- 
211. 1873. 

Lower Carboniferous. New Brunswick. 
Perry limestone, Wheeler. Mo. Geol. Surv., vol. xi, p. 41. 1896. 

Silurian. Missouri. Part. syn. Niagara and Clear Creek. 
Peru, Lesley. 2d Pa. Geol. Surv., Rept. F, p. xix. 1878. 

Devonian. Pennsylvania. 
Pescadero series, Ashley. Jour, of Geol., vol. iii, pp. 436-439. 1895. 

Tertiary. California. Included in Eocene(?). 
Pescadero series, Ashley. Cal. Acad. Sci., Proc, 1895, 2d ser., vol. v, pp. 285, 286, 
298. 1896. 

Miocene-Cretaceous. California. Includes Upper part of San Francisco limestone. 
Pewabicquartzite, Wimthell. Minn. Geol. and Nat. Hist. Surv., Bull., vol. iv, p. 118. 
1891. 

Minnesota. Included in Taconic. 
Pewabicquartzite, Lawson. Minn. Geol. and Nat. Hist. Surv., 19th Ann. Rept., p. 208. 
1892. 

Minnesota. 
Pewabic quartzite, Spurr. Minn. Geol. and Nat. Hist. Surv., Bull., vol. x, p. 4. 1894. 

Minnesota. 
Phelps sandstone, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 77-82. 1898. 

Devonian. Missouri. Included in Hamilton stage. 
Philadelphia red gravel, Lewis. Phil. Acad. Nat. Sci., Proc, vol. xxxii, pj). 266, 
288, 296. 1880. 

Pennsylvania. Included in Champlain. 
Philadelphia brick clay, Lewis. Phil. Acad. Nat. Sci., Proc, vol. xxxii, pp. 296, 
297. 1880. 

Pennsylvania. Included in Champlain. 
Philadelphia brick clay, Hall. 2d Pa. Geol. Surv., Rept. C^, pp. 16-17. 1881. 

Pleistocene. Pennsylvania. 
Philadelphia mica schist. Hall. 2d Pa. Geol. Surv., Rept. C«, pp. 28-31. 1881. 

Pennsylvania. 
Philadelphia clay, Chester. Am. Jour. Sci., 3d ser., vol. xxvii, p. 190. 1884. 

Pleistocene. Delaware and Maryland. 



320 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Pliilatlelplna nulxlivision, l.,e8ley. 2(1 Pa. Ueol. Surv., Final Kept., vol. i, pp. 121-122. 
1892. 

Archean. Pennsylvania. 
Phillipsburg series, Ells. Can. (ieol. Surv., new ser., vol. vii, pp. 16J-17J, 30J-32J. 
1896. 

Cambro-Silurian. Prov. of Quebec, Canada. Included in Quebec group. Include? 
* Lower Phillipsburg (Calciferous) , Upper Phillipsburg (Chazy). 
Phil lipsburg group, Marcou. Am. Geol., vol. xix, pp. 43-45. 1897. 

Cambrian. Canada. Exact s/n. Pointe Levis group. 
Phipsburg limestone, Jackson. Kept, on Cieol. of Maine, vol ii, pp. 61-62. 1838. 
Pickens sandstone, Taff and Brooks. U. 8. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 34. 1896. 

Carboniferous. West Virginia. 
Pictou freestones. Ami. Brit. Assoc. Adv. Sci., Kept. 1899, p. 756. 1899. 

Carboniferous. Nova Scotia. 
Pictou formation, Ami. Can. Rec. Sci., vol. viii, pp. 162-163. 1900. 

Carboniferous. Canada. Included in Neo-Carboniferous. 
Pictured Cliff group. Holmes. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. 
Kept., pp. 246, 248, 251. 1877. 

Cretaceous. Colorado. 
Piedmont group, Kerr. N. C. Geol. Surv., Kept., 1866-67, pp. 33-35. 1869. 

North Carolina. 
Piedmont sandstone, Stevenson. 2d Pa. Geol. Surv., Kept. K*, pp. 44, 68, 73, 79-80, 

87. 1878. 
Piedmont gneiss, McGee. Smithsonian Inst., Ann. Rept., 1890, p. 73. 1891. 

Archean. District of Columbia. Included in Azoic. 
Pierce limestone, Safford. Geol. of Tenn., by Safford, p. 261. 1869. 

Silurian. Tennessee. Included in Trenton or Lebanon. 
Pierre shales, Dawson. Can. Geol. Surv., Kept, 1880-81-82, p. 7B. 1883. 

Cretaceous. Canada. 
Pierre group, Dawson. Science, vol. i, p. 429. 1883. 

Cretaceous. Canada. Part. syn. Chico(?). 
Pierre shales, Dawson. Can. Geol. Surv., Rept., 1882-83-84, p. 115. 1885. 

Cretaceous. Canada. 
Pierre group, Gilbert and Gulliver. Geol. Soc. Am., Bull., vol. vi, p. 333. 1895. 

Cretaceous. Colorado. 
Pierre, Emmons, Cross and Eldridge. U. S. Geol. Surv., Mon., vol. xxvii, p. 69. 
1896. 

Cretaceous. Colorado. Included in Montana group. 
Pierre group, Gilbert. U. S. Geol. Surv., 17th Ann. Rept. pt. ii, p. 567. 1896. 

Cretaceous. Colorado. 
Pierre formation, Gilbert. U. S. Geol. Surv., Gcol. Atlas of U. S., Folio No. 36. 
1897. 

Cretaceous. Colorado. 
Pierre, Williston. Kan. Univ. Geol. Surv., vol. ii, p. 246. 1897. 

Upper Cretaceous. Kansas. Exact syn. Fort Pierre. 
Pierre shale, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-27. 1898. 

Upper Cretaceous. Kansas. 
Pierre shale, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 58. 1899. 

Cretaceous. Colorado. 
Pierre shale, Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 68. 1900. 

Cretaceous. Colorado. 

(See also Fort Pierre. ) 
Pigeon slate, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 1895. 

Algonkian. Tennessee. Included in Ocoee series. 






WEEKS] PHILADELPHIA PITTSBURG. 321 

Pigeon slate, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25. 1895, 
1896. 

Tennessee, North Carolina. Included in Ocoee group. 
Pilgrrim limestone. Weed. U. S. Geol. Surv., 20th Ann. Rept., pt. iii, p. 286. 1900. 

Cambrian. Montana. 
Pilot Knob conglomerate, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 31. 1894. 

Algonkian. Missouri. 
Pine Creek limestone, White. 2d Pa. Geol. Surv., Rept. Q, p. 32. 1878. 

Carboniferous. Pennsylvania. Exact syn. Coleman(?) limestone. 
Pine Creek conglomerate, Udden. Iowa Acad. Sci., Proc, vol. vi, pp. 54-56. 1898. 

Pre-Glacial and Post-Carboniferous. Iowa. 
Pine Creek conglomerate, Udden. Iowa Geol. Surv., vol. ix, p. 316. 1899. 

Cretaceous(?). Iowa. 
Pine Creek conglomerate, Udden. Iowa Acad. Sci., Proc, vol. vi, pp. 54-56. 1899. 

Iowa. 
Pine Mountain group, Crandall. Ky. Geol. Surv. (Proctor), Geol. of Whitley Co. 

Carboniferous. Kentucky. Exact syn. Rockcastle group(?). 
Pink Cliff series, Button. U. S. Geog. and Geol. Surv., Geol. of High Plateaus of 
Utah, p. 204. 1880. 

Tertiary. Utah. Included in Eocene. Exact syn. Bitter Creek beds. 
Pinnacle system, Russell. Nat. Geog. Mag., vol. iii, p. 167, pp. 170-173. 1891. 

Pliocene or Pleistocene. Alaska. 
Pinnacle(?), Upham. Geol. Soc. Am., Bull., vol. iv, p. 196. 1893. 

Pleistocene. Alaska. 
Pinon conglomerate. Smith. Jour, of Geol., vol. viii, p. 464. 1900. 

Tertiary. Wyoming. Included in Eocene. 
Pinon Mesa group. Holmes. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept., 
pp. 248, 249, 251. 1877. 

Cretaceous. Colorado. 
Pinyon conglomerate. Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 
1896. 

Tertiary. Wyoming. Included in Eocene. 
Pinto limestone, Dumble. Geol. Soc. Am., Bull., vol. iii, pp. 219, 222. 1892. 

Cretaceous. Texas. Included in Upper Cretaceous. Exact syn. Austin limestone. 
Pinto limestone, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 383. 1895. 

Cretaceous. Texas. Included in Upper Cretaceous. 
Pipestone quartzite, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, 
vol. ii, p. xxii. 1888. 

Minnesota. Included in Potsdam. 
Piscataway, Heilprin. Phil. Acad. Nat Sci., Jour., vol. ix, pp. 124-127. 1884. 

Tertiary. Maryland. Included in Eocene. Part. syn. Buhrstone or Eolignitic. 
Pithole grit, Carll. 2d Pa. Geol. Surv., Rept P, pp. 91-97. 1880. 

Carboniferous. Pennsylvania and Ohio. Exact syn. Berea grit. 
Pitt formation. Smith. Jour, of Geol., vol. ii, pp. 601-604. 1894. 

Carboniferous and Trias. California. 
Pittsburg: series, Rogers. Pa. State Geol., 3d Ann. Rept., pp. 88-108. 1839. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Pittsburg limestone, Rogers. Geol. of Pa., vol. ii, p. 634. 1858. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Pittsburg limestone and sandstone, Stevenson. Am. Phil. Soc, Trans., vol. xv, 
pp. 20-21. 1873. 

Carboniferous. West Virginia. Included in Monongahela River series. 
Pittsburg sandstone, Piatt. 2d Pa. Geol. Surv., Rept., IP, p. 312. 1878. 

Carboniferous. Pennsylvania. 

Bull. 191-02 21 



322 NORTH AMKRICAN GEOLOGIC FORMATION NAMES. [buli.191 

Pitttilmrj: series, D'lnvillien*. 2<1 Pa. (leol. Siirv., Ann. Kept., 1886, pp. 74-79, 208, 
2()5, 295-2*m. 1887. 

Carlxjniferous. Pennsylvania. Exa<*t syn. Barren Measures. 
PitU^burg sandstone, Lovejoy. Ohio Geol. Siirv., vol. vi, pp. 627, 681, 632. 1888. 

Carboniferous. Ohio. 
Pittsburg coal, White. U. S. (ieol. Surv., Bull., No. 65, pp. 63, 87. 1891. 

Carl>oniferou8. Ohio, Pennsylvania, and West Virginia. Included in Upper Coal 
Measures, Monongahela River series. 
Pittsburg measures, D'lnvilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, 
pp. 2406-2447. 1895. 

Carboniferous. Pennsylvania. Exact syns. No. xiv. Barren Measures, Elk River 
series of W. Va. 
Pittsburg coal l)ed, White. Am. Assoc. Adv. Sci., Proc, vol. xlvi, pp. 187-198. 1898. 

Carboniferous. Pennsylvania and West Virginia. Included in Monongahela 
River series. 
Plant beds, Powell. IT. 8. Geog. and Geol. Surv., Geol. of Uinta Mountains, pp. 40, 
45. 1876. 

Tertiary. Utah. Included in Upper Green River. 
Plastic clay series, Morton. Phil. Acad. Nat. Sci., Jour., vol. vi, p. 113. 1829. 

New Jersey and Delaware. 
Plateau gravel, Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 35-42. 1888. 

Post-Tertiary. Arkansas. 
Plateau gravel, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Tertiary. Indian Territory. Included in Neocene. 
Platte River formation, Engelmann. Eng. Dept. U. S.JA., Simpson^s Expl. of Great 
Basin, p. 282. 1876. 

Cretaceous or Tertiary. Wyoming. 
Platte series, Cragin. Colo. Coll. Stud., vol. vi, p. 49. 1896. 

Cretaceous. Kansas. Includes Dakota to I^ramie. 
Platte series, Williston. Kan. Univ. Quart., vol. iv, pp. 251-252. 1896. 

Upper Cretaceous. Kansas. Includes Dakota, Benton, Colorado, Montana, and 
Laramie groups. 
Platte shale, Keyes. Am. Geol., vol. xxiii, p. 308. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Platte shales, Keyes. Iowa Acad. Sci., Proc, vol. vii, p. 92. 1900. * 

Carboniferous. Mississippi Valley. Included in Coal Measures. 
Plattsburg group and limestone, Broadhead. St. Louis Acad. Sci., Trans., vol. ii, 
pp. 317, 327. 1868. 

Carboniferous. Missouri. 
Plattsburg limestone, Broadhead. St. Louis Acad. Sci., Trans., vol. iv, p. 483. 1884. 

Carboniferous. Kansas. 
Plattsburg limestone, Broadhead. Mo. Geol. Surv., vol. viii, p. 378. 1895. 

Carboniferous. Missouri. Included in Coal Measures. 
Plattsburg limestone, Keyes. Am. Geol., vol. xxiii, pp. 305-306. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Plattsmouth limestone, Keyes. Am. Geol., vol. xxiii, p. 306. 1899. 

Carboniferous. Mississippi Valley. Included in Missourian series. 
Plattsmouth limestone, Keyes. Iowa Acad. Sci., Proc, vol. vii, p. 90. 1900. 

Carboniferous. Mississippi Valley. Included in Coal Measure's. 
Pleasanton shale, Haworth. Am. Jour. Sci., 3d ser., vol. 1, p. 457. 1895. 

Carboniferous. Kansas. Included in Coal Measures. 
Pleasanton shales, Haworth. Kan. Univ. Geol. Surv., vol. i, pp. 44-45, 153-154,224. 
1896. 

Carboniferous. Kansas. 



WEEK8.] PITTSBURG POCONO. 323 

Pleasanton shales, Adams. Kan. Univ. Geol. Surv., vol. i, p. 22. 1896. 

Carboniferous. Kansas. 
Pleasanton shales, Kirk. Kan. Univ. (leol. Surv., vol. i, pp. 74-75. 1896. 

Carboniferous. Kansas. 
Pleasanton shales, Bennett. Kan. Univ. (ieol. Surv., vol. i, pp. 93-95. 1896. 

Carboniferous. Kansas. 
Pleasanton shales, Haworth. Kan. Univ. Geol. 8urv., vol. iii, pp. 39-44, 92, 94, 100. 
1898. 
Included in Marmaton formation. Includes Lower Pleasanton shales and Upper 
Pleasanton shales. 
Pleasanton shale, Marbut. Mo. Geol. 8urv., vol. xii, pt. ii, pp. 34, 120, 121, 209, 
214, 248, 271, 274. 1898. 
Upper Carboniferous. Missouri. Included in Des Moines series. 
Pleasanton shale, Orton. Geol. Soc. Am., Bull., vol. x, p. 104. 1899. 

Upper Carboniferous. Kansas. 
Pleasanton, Bain and Leonard. Geol. Soc. Am., Bull., vol. x, p. 11. 1899. 

Upper Carboniferous. Kansas and Missouri. 
Pleurocoelus beds, Marsh. Am. Jour. S(;i., 4th ser., vol. ii, pp. 296, 435-436. 
1896. 
Maryland. Included in Jurassic. Includes Raritan clay of New Jersey. 
Plioliippus beds. Marsh. U. S. Geol. Surv.,Mon., vol. xxvii, p. 480. 1896. 

Tertiary. Colorado. Included iij Pliocene. 
Plymouth marble, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 182. 1890. 

Arkansas. 
Pocahontas, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 
1896. . 
Carboniferous. Virginia and West Virginia. Included in Coal-bearing strata, 
Pottsville series. 
Pocahontas formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 
Carboniferous. Virginia, West Virginia. Part. syn. No. xii, Great conglomerate 
of Rogers. 
Pochuck gneiss, Wolff and Brooks. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, 
p. 439. 1898. 
Pre-Cambrian. New Jersey. 
Pocono, Stevenson. 2d Pa. Geol. Surv., Rept. K", pp. 105-109. 1877. 

Carboniferous. Pennsylvania. Included in Lower Carboniferous. FiXact syn. 
Vespertine. 
Pocono sandstone, Ashburner. Am. Phil. Soc, Proc, vol. xvi, pp. 522, 541. 1877. 
Carboniferous. Pennsylvania. Includes New River coal series. Exact syn. 
Vespertine. 
Pocono sandstone, Piatt. 2d Pa. Geol. Surv., Rept. H"-^, p. xxiv-xxvi 1877. 
Pocono, Ashburner. 2d Pa. Geol. Surv., Rept. F, pp. 206-216. 1878. 

Carboniferous. Pennsylvania. Exact syn. Vespertine. 
Pocono, Stevenson. 2d Pa. Geol. Surv., Rept. K^, pp. 54-57. 1878. 

Carboniferous. Pennsylvania. Exact syn. Vespertine. 
Pocono, Ashburner. 2d. Pa. Geol. Surv., Rept. R, pp. 64-71. 1880. 
Carboniferous. Pennsylvania. Includes Sub-Olean conglomerate, Marvin Creek 
limestone. Exact syn. No. 10, Vespertine. 
Pocono, Chance. 2d Pa. Geol. Surv., Rept. G*, pp. 97-101. 1880. 

Carboniferous. Pennsylvania. Exact syn. No. 10, Vespertine. 
Pocono, White. 2d Pa. Geol. Surv., Rept. G% pp. 56-59. 1881. 
Carboniferous. Pennsylvania. Includes Griswold Gap conglomerate. Mount 
Pleasant conglomerate. Exact syn. No. 10. 



324 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullWI. 

Pocono, Piatt. 2(1 Pa. (Jeol. Surv., Kept. T, pp. 22-26. 1881. 

CarhoniferoiiH. Pennpylvania. Exact nyii. No. 10. 
Poeoiics White. 2d Pa. (ieol. Siirv., Kept. G«, pp. 89-91. 1882. 

CarlioniferouH. Pennsylvania. Includes Mount Pleasant conglomerate. 
Pocono, Stevenson. 2d Vsl. Geol. Surv., Rept. T*, pp. 69-72. 1882. 

C'arl)oniferou8. Pennsylvania. 
Pocono, White. 2d Pa. C4eol. Surv., Rept. (T^ pp. 46-52, 1883. 

CarlK)niferous. Pennsylvania. Exact syn. No. 10. 
Pocono, White. 2d Pa. (Jeol. Surv., Rept. T^, [)p. 77-88. 1885. 

Carboniferous. Pennsylvania. 
Pocono, Ashburner. 2d Pa. (ieol. Surv., Rept. R^, pp. 398-399. 1885. 

Carl)oniferou8. Pennsylvania. Exact syn. No. 10. 
Pocono sandstone, Winslow. 2d Pa. (ieol. Surv., Ann. Rept., 1886, pt. iv, pp. 1337, 
1343, 1353, 1:^55, 1357, 1361, 1363. 1887. 

Carboniferous. Pennsylvania. Exact syn. No. 10. 
Pocono, Darton. Am. (ieol., vol. x, p. 18. 1892. 

Carboniferous. Virginia. Part. syn. Montgomery grits of Rogers. 
Pocono, Prosser. U. S. (ieol. Surv., Bull. No. 120, p. 78. 1894. 

C-arboniferous. New York, Pennsylvania. . Included in Lower Carboniferous. 
Includes Mount Pleasant conglomerate. 
Pocono, I^sley. 2d Pa. Ceol. Surv., Final Rept., vol. iii, pt. i, pp. 1629-1789. 1895. 

Carboniferous. Pennsylvania. Exact syn. No. x, Pennsylvania Survey. 
Pocono sandstone, Darton, U. S. (ieol. Surv., Geol. Atlas of U. S., Folios No. 14, 32. 
1894, 1896. 

Carboniferous. Virginia, West Virginia. Exact syns. Montgomery grits, Rogers' 
No. x and Vespertine. 
Pocono sandstone, Taff and Brooks. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 34. 1896. 

Carboniferous. West Virginia. 
Pocono sandstone, Darton and Taff. U. S. (ireol. Surv., Geol. Atlas of U. S., Folio 
No. 28. 1896. 

Carboniferous. West Virginia and Maryland. 
Pocono formation, Clark. Md. (ieol. Surv., vol. i, pp. 156, 184-185. 1897. 

Carboniferous. Maryland. 
Pocono, (;iark. Md. (ieol. Surv., vol. ii, pp. 199, 208. 1898. 

Carboniferous. Maryland. 
Pocono sandstone, White. West Va. Geol. Surv., vol. i, p. 204. 1899. 

Carboniferous. West Virginia. 
Pocono sandstone, Darton. U. S. (tcoI. Surv., Geol. Atlas of U. S., Folio No. 61. 
1899. 

Carboniferous. Virginia and West Virginia. 
Pocono, Clark. Md. Geol. Surv., vol. iii, p. 100. 1899. 

Carboniferous. Maryland. 
Pocono formation, O'Harra. Md. (tcoI. Surv., Allegany Co., p. 109. 19(X). 

Carboniferous. Maryland. 
Pogonip limestone, Hague. U. S. (tcoI. Expl. of 40th Parallel, vol. ii, p. 542. 1877. 

Silurian-Cambrian. Nevada. 
Pogonip limestone. King. U. S. Expl. of 40th Parallel, vol. i, pp. 127-248. 1878. 

Silurian-Cambrian. Utah, Nevada. Part syn. Ute limestone. 
Pogonip limestone, Hague. V. S. (ieol. Surv., 3d Ann. Rept., pp. 253, 260-262. 1883. 

Silurian. Nevada. 
Pogonip limestone, Hague. U. S. Geol. Surv., Mon., vol. xx, p. 48. 1892. 

Silurian. Nevada. 



WEEKS.] POCONO PONENT. 325 

Point Aux Gtres limestone, Douglass. Mich. Legis., Doc., vol. i, No. 11 (4th Ann. 
Rept. State Geol., for 1840), p. 547. 1841. 
Michigan. 
Point of Rocks, Powell. U. 8. Geol. and Geog. Surv., Geol. of Unita Mountains, 
pp. 40, 47, 155. 1876. 
Cretaceous. Utah. Includes Upper Hogback sandstone, Middle Hogback sand- 
stone, and Golden Wall sandstone. 
Point of Rocks group, Stanton and Knowlton. Geol. Soc. Am., Bull., vol. viii, p. 146. 
1897. 
Cretaceous. Wyoming. Included in Laramie. 
Point Pleasant, James. Am. Assoc. Adv. Sci., Pro<;., vol. xl, p. 283. 1891. 

Silurian. Ohio. 
Point Pleasant beds, James. Gin. Soc. Nat. Hist., Jour., vol. xiv, no. ii, p. 93. 
1891. 
Ordovician. Ohio. 
Pointe I^evis group, Marcou. Am. Geol., vol. xix, pp. 43-45. 1897. 

Cambrian. Canada. Exact syn. Phillipsburg group. 
Poison Canon beds, Hills. Colo. Sci. Soc, Proc, vol. iii, pp. 148-164. 1888. 

Tertiary. Colorado. 
Poison Caflon beds. Hills. Colo. Sci. Soc, Proc, vol. iv, p. 9. 1891. 
Tertiary. Colorado. Included in Huerfano series, Ix)wer Eocene. 
Poison Cafion beds, Orton. Am. Nat., vol. xxxi, p. 967. 1897. 

Cretaceous. Colorado. 
Poison Cafion formation. Hills. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 68. 1900. 
Tertiary. Colorado. Included in Eocene(?). 
Pokeg^ama quartzite, Culver. Minn. Geol. and Nat. Hist. Surv., 22d Ann. Rept., 
p. 102. 1894. 
Minnesota. Exact syn. Pewabic 
Pokegama quartzot^, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., 
vol. iv, pp. 366, 375, 391. 1899. 
Cambrian. Minnesota. Included in Animikie. 
Pokegama quartzite. Grant. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. iv, 
pp. 181, 347, 351. 1899. 
Minnesota. Included in Animikie. 
Pokegama quartzite, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, pt. v, 
p. 45. 1900. 
Cambrian. Minnesota. Included in Taconic 
Polk Bayou limestone, Williams. Ark. (tcoI. Surv., 1892, vol. v, pj). 278-284. 1900. 

Silurian. Arkansas. Included in Ordovician. 
Polk County ash beds, Williams. Ark. Geol. Surv., 1890, vol. ii, pp. 375, 376. 1890. 

Arkansas. 
Pomeroy sandstone, Lovejoy. Ohio Geol. Surv., vol. vi, p. 635. 1888. 

Carboniferous. Ohio. 
Ponderosa marl, Dumble. Tex. (leol. Surv., 1st Ann. Rept., pi. iii, p. xlvi. 1890. 

Cretaceous. Texas. Included in Black Prairie serien. 
Pondville group, Shaler, Woodworth and Foernte. U. S. Geol Surv., Mon., 
vol. xxxiii, pp. 135-141. 1899. 
Carboniferous. Rhode Island. 
Ponent series, Rogers. Am. Jour. Sci., Istser., vol. xlvii, p. 156. 1844. 

Carboniferous. Includes Ponent sandstone and contjlomerate. 
Ponent series, Rogers. Geol. of Pa., vol. i, pp. 108, 141-142 et seq.; vol. ii, p. 756. 
1858. 
Devonian. Pennsylvania. Exact syn. Catskill. 



326 NORTH AMERICAN GEOLOGIC FORMATU)N NAMES. [bull. 191. 

Ponet, Li>wor, (Maypole. Am. Nat, vol. xvii,1883, p. 274. 1883. 

Peniii^ylvania. 
Pope Hollow rock, Randall. ReKentH Univ. of N. Y., 47th Ann. Rept., p. 714. 1894. 

New York. 
Porcupine HiU serie*^, DawHon. Can. (xeol. Surv.,Repte. 1880-81-82, p. 4B. 1883. 

Canada. Included in I^ramie. 
Porcupine Hill perien, Dawson. Can. Geol. Surv., Repte. 1882-83-84, pp. 82C, 96C, 
112C-113(\ 18a5. 

Canada. Included in Laramie. 
Porcupine bedn, Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, p. 197. 1898. 

Tertiary. Alaska. Include<l in Miocene(?). Exact syn. Twelvemile beds. 
Porphyrian, Whitney and Wadsworth. Harvard Coll. Mus. C/om. Zool., Bull., 
vol. vii, 1880-84, p. 562. 1884. 

Included in Azoic system. 
Port Hudson group, Hilgard. Am. Jour. Sci., 2d ser., vol. xlviii, p. 332. 1869. 

Quaternary. Louisiana. 
Port Hudson, Smith. Am. Assoc. Adv. Sci., Proc, vol. xx, p. 252. 1871. 

Pleistocene!?). Mississippi. 
Port Hudson group, Hilgard. Am. Jour. Sci., 3d ser., vol. ii, pp. 401-403. 1871. 

Pleistocene. Gulf region. 
Port Hudson group, Loughridge. Ky. Geol. Surv., Jackson Purchase r^on, 
pp. 73-76. 1888. 

Quaternary. Kentucky. Exact syn. Port Hudson. 
Port Hudson beds, Mc(iee. St. Louis Acad. Sci., Trans., vol. v, p. 316. 1892. 

Missouri. 
Port Hudson, Upham. Geol. Soc. Am., Bull., vol. v, p. 95. 1894. 

Tertiary(?). Minnesota. Part syn. I^fayette(?). 
Port Hudson, Harris and Veatch. La. State Exp. Sta., pt. v, p. 111. 1899. 

Pleistocene. Louisiana. 
Portage group. Hall. N. Y. Geol. Surv., 4th Ann. RepL, pp. 391-392,401. 1840. 

Devonian. New York. Exact syn. Upper Fusoidal group. 
Portage group. Hall. N. Y. Geol. Surv., 5th Ann. Rept., pp. 166-167. 1841. 

Devonian. New York. 
Portage, Hall. Am. Jour. Sci., 1st ser., vol. xlii, p. 55. 1842. 

Ohio. Exact syn. Waverly sandstone. 
Portage group, V'anuxem. Geol. of N. Y., pt. iii, pp. 172-174. 1842. 

Paleozoic. New York. Included in New York system. Includes Cashaqua shale, 
Gardeau group, and Sherburne flagstones and shale. Exact syn. Nunda group. 
Portage sandstone, Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 228-230. 
1843. 

Paleozoic. New York. Included in Portage group. 
Portage group. Hall. Geol. of N. Y., pt. iv, 4th (ieol. Dist., pp. 18, 224-241. 1843. 

Paleozoic. New York. Included in New York system. Includes Sherburne flag- 
stone and shale, Cashaqua shale, and Gardeau group. Exact syn. Nunda group. 
Part syn. No. ix, Pennsylvania Survey. 
Portage group, Emmons. Agric. of N. Y., vol. i, pp. 188-190. 1846. 

Devonian. New York. Included in Catskill division of N. Y. system. 
Portage, Whittlesey. Am. Assoc. Adv. Sci., Proc, vol. v, p. 207. 1851. 

Devonian. Ohio. 
Portage and Chemung group, Logan. Can. Geol. Surv., Rept. 1843-63, pp. 387-389. 
1803. 

Devonian. Canada. Included in Upper Devonian. Includes Portage and Che- 
nmng of N. Y. 



WEEKS.] PONET PORTAGE. 327 

Portage and Chemung group, Chapman. Can. Inst., new ser., vol. viii, pp. 449-450. 
1863. 

Devonian. Canada. 
Portage group, Dawson. Am. Jour. Soi., 2d ser., vol. xxxv, pp. 314-319. 1863. 

Devonian. Canada. 
Portage, Newherry. Ohio Geol. Surv., vol. i, pt. i, p. 69. 1873. 

Devonian. Ohio. 
Portage, Lesley. 2d Pa. Geol. Surv., Rept. I, pp. 82-87. 1875. 

Devonian. Pennsylvania, New York. Exact syn. No. viii. 
Portage, Ashburner. Am. Phil. Soc, Proc, vol. xvi, pp. 527, 549. 1877. 

Devonian. Appalachian region. Exact syn. Vergent. 
Portage flags. White. 2d Pa. Geol. Surv., Rept. Q*, pp. 119-120. 1881. 

Devonian. Pennsylvania. 
Portage flags, Piatt. 2d Pa. Geol. Surv., Rept. T, pp. 29-30. 1881. 

Devonian. Pennsylvania. 
Portage, White. 2d Pa. Geol. Surv., Rept. T\ pp. 99-104. 1885. 

Devonian. Pennsylvania. 
Portage, Williams. U. S. Geol. Surv., Bull. No. 41, p. 31. 1887. 

Devonian. New York. 
Portage group, Miller. N. A. Geol. and Pal., p. 62. 1889. 
Portage, Harris. Am. Geol., vol. vii, p. 168. 1891. 

Devonian. New York. 
Portage, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1337-1370. 1892. 

Devonian. Pennsylvania. Includes Cashaqua and Gardeau shales. Exact syn. 
No. viiif. 
Portage, Brumell. Geol. Soc. Am., Bull., vol. iv, p. 227. 1893. 

Devonian. Ontario. 
Portage, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 94, 108, 116. 1893. 

Devonian. New York. 
Portage, Prosser. Am. Jour. Sci., 3d ser., vol. xlvi, pp. 212-230. 1893. 

Devonian. New York. 
Portage group, Luther. N. Y. State Geol., 13th Ann. Rept., pp. 31-34. 1894. 

Devonian. New York. 
Portage beds, Lincoln. N. Y. State Mus.,48th Ann. Rept., pt. ii, pp. 99-102. 1895. 

Devonian. New York. 
Portage beds, Lincoln. N. Y. State Geol., 14th Ann. Rept., pp. 99-102. 1895. 

Devonian. New York. 
Portage sandstones, Luther. N. Y. State Geol., 15th Ann. Rept., pp. 237-304. 1897. 

Devonian. New York. 
Portage group, Clarke. N. Y. State Geol., 15th Ann. Rept., pp. 27-82. 1897. 

Devonian. New York. 
Portage group. Bishop. N. Y. State Geol., 15th Ann. Rept., pp. 320-322. 1897. 

Devonian. New York. 
Portage, Prosser. Roch. Acad. Sci., Proc, vol. ii, pp. 50-124. 1898. 

Devonian. New York. 
Portage lake conglomerate, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, pp. 107-110. 
1898. 

Michigan. 
Portage series, Clarke. N. Y. State Geol., 16th Ann. Rept., pp. 31-37. 1899. 

Devonian. New York. 
Portage group, Luther. N. Y. State Geol., 16th Ann. Rept., p. 223. 1899. 

Devonian. New York. 



328 NORTH AMERICAN GKOLOOIC FORMATION NAMES. [bull. 191. 

Portage bedn, Clarke and Schuchert. Science, new ser., vol. x, pp. 87(>-878. 1899. 

Devonian. New York. Included in Senecan. Includes Naples, Ithaca, and 
Oneonta be<l8. 
Porters Creek group, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 368-369. 
1864. 

Tertiary(?). Tennessee. Part. syn. Northern Lignitic. 
Porters Oeek group, Safford. Geol. of Tenn., pp. 422-424. 1869. 

Tertiary. Tennessee. Part syn. Northern lignite. 
Porters Creek group, Heilprin. Phil. Acad. Nat. Sci., Jour., vol. ix, p. 153. 1884. 

Tertiary. Tennessee. Included in Eocene. Exact syn. Flatwoodsof Mississippi. 
Portland clays, Hitchcock. Rei)t. on Geol. of Maine, 1861, pp. 275-276. 1861. 

Pliocene. 
Portland series, Matthew. Can. Nat., vol. viii, pp. 244, 246. 1863. 

Pre-Carboniferous. New Brunswick. 
Portland quartzite, Chaml)erlin. Geol. of Wis., vol. ii, pp. 252-256. 1877. 

Archean. Wisconsin. 
Portland stone, Hopkins. Indiana Dept. Geol. and Nat. Res., 20th Ann. Rept., 1895, 
p. 306. 1896. 

Carboniferous. Indiana. 
Porus formation, Hill. Harvard Coll. Mus. Comp. Zool. Bull., vol. xxxiv, p. 85. 
1899. 

Pleistocene or Pliocene. Jamaica. Included in Coastal series. 
Post-medidial series, Rogers. Am. Jour. Sci., 1st ser., vol. xlvii, p. 155. 1844. 

Devonian. Includes Marcel lus shales, Hamilton group, Tully limestone, Genesee 
shale, Portage group, and Chenmng group. 
Post-Meridian series, Rogers. Cieol. of Pa., vol. i, pp. 107, 273, et seq., vol. ii, 
p. 755. 1858. 

Silurian. Pennsylvania. Includes Cauda-galli and Schoharie grits, and Upper 
Helderberg or Corniferous. Cliff limestone in part. 
Poteau stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carbon i ferous . A rkansas. 
Poteau group, Drake. Am. Phil. Soc, Proc, vol. xxxvi, p. 378. 1897. 

Carboniferous. Indian Territory. Included in Upper Coal Measures. 
Potomac formation, McGee. U. S. (ieol. Surv., 7th Ann. Rept., p. 613. 1888. 

Cretaceous. Maryland. 
Potomac formation, McGee. Am. Jour. Sci., 3d ser., vol. xxxv, pp. 126-143. 1888. 

Cretaceous. Atlantic Coastal region. 
Potomac formation, Ward. Am. Jour. Sci., 8d ser., vol. xxxvi, pp. 119-131. 1888. 

,Iurassic(?). Atlantic Coastal Plain. 
Potomac, Fontaine. U. S. Geol. Surv., Mon., vol. xv, pp. 33-62. 1889. 

Cretaceous. Atlantic Coastal Plain. 
Potomac, Clark. Johns Hopkins Univ. Circs., vol. ix, p. 69; vol. x, pp. 105-108. 
1890. 

Mesozoic. Virginia, Maryland. 
Potomac, White. U. S. Geol. Surv., Bull. No. 82, pp. 89, 251. 1891. 

Cretaceous. Atlantic coast. 
Potomac, Mc(iee. Smithsonian Inst., Rept. 1890, j). 73. 1891. 

Cretaceous. District of Columbia. 
Potomac, Darton. U. S. Geol. Surv., Baltimore, Md., Geologic sheet. 1892. 

Cretaceous. Maryland. 
Potomac, Uhler. Md. Acad. Sci., Trans., vol. i, p. 194. 1892. 

Cretaceous. Maryland. 

tomac, McGee, Williams and Darton. Int. Cong, of Geol., 5th Sess., pp. 237-239, 
248. 1893. 
aceous. Maryland, District of Columbia, an<l Virginia. 



L 



WEEKS.] PORTAGE POTSDAM. 329 

Potomac, Williams and Clark. Maryland; Its Resources, Industries, and Institu- 
tions, pp. 74-75. 1893. 

Cretaceous. Maryland. Included in Lower Cretaceous. 
Potomac, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 13, 23. 1894, 
1896. 

Cretaceous. Virginia and Maryland. 
Potomac, Ward. U. S. Geol. Surv., 15th Ann. Rept., p. 318. 1895. 

Cretaceous. Atlantic Coastal Plains. Includes James River series, Rappahannock, 
Mount Vernon, Aquia Creek, Iron ore, and Albirupean series. 
Potomac formation, Bibbins. Johns Hopkins Univ. Circ, vol. xv, pp. 17-18. 1895. 

Mesozoic. Maryland. 
Potomac, Darton. U. S. Geol. Surv., Bull. No. 138, pp. 125, 162. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Potomac, Hollick. Science, new ser., vol. iv, p. 571. 1896. 

Cretaceous. Rhode Island and Maryland. 
Potomac, Ward. Science, new ser., vol. iv, pp. 757-760. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Potomac, Gilbert.. Science, new ser., vol. iv, pp. 875. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Potomac, Marcou. Science, new ser., vol. iv, p. 945. 1896. 

Juratrias, Cretaceous. Atlantic Coastal Plain. 
Potomac, Hill. Science, new ser., vol. iv, p. 918. 1896. 

Cretaceous. Atlantic Coastal Plain, Texas. 
Potomac, Fontaine. U. S. Geol. Surv., Bull. 145. 1896. 

Cretaceous. Virginia. Exact syn. Neocomian. 
Potomac, Marsh. Science, new ser., vol. iv, p. 805. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Potomac, Marsh. Am. Jour, Sci., 4th ser., vol. ii, pp. 436-437. 1896. 

Maryland. Part. syn. Alantosaurus. 
Potomac group, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Cretaceous, Jurassic(?). Maryland. Includes Raritan, Patapsco, Arundel, and 
Patuxent. 
Potomac formation, Stanton. Jour, of Geol., vol. v, pp. 587-592. 1897. 

Cretaceous. Included in Lower Cretaceous. 
Potomac marble, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 56. 1890. 

Triassic. Arkansas. 
Potomac marble, Clark. Md. Geol. Surv., vol. ii, p. 171. 1898. 

Triassic. Maryland. Included in Red beds, Newark formation. Exact syns. 
Potomac breccia, and Calico rock. 
Potosi limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Cambrian. Missouri. Included in St. Francois limestone, Ozark series. Part, 
syns. Jefferson City limestone and Moreau sandstone. 
Potosi limestone, Winslow. U. S. Geol. Surv., Bull. No. 132, p. 17. 1896. 

Missouri. 
Potosi rhyolite series. Cross. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 57. 
1899. 

Tertiary. Colorado. 
Potsdam sandstone, Emmons. N. Y. Geol. Surv., 2d Ann. Rept., pp. 214-215. 
1838. 

Cambrian. New York. 
Potsdam sandstone, Mather. N. Y. Geol. Surv., 5th Ann. Rept., pp. 101-103. 1841. 

Cambrian. New York. 
Potsdam, Conrad. Phil. Acad. Nat. Sci., Jour., vol. viii, p. 230. 1842. 

Lower Silurian. 



330 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Potsdam sandstone, P:mmon8. (ieol. of N. Y., pt. ii, pp. 102-105, 177, 266, 331, 360, 
377. 1842. 
Paleozoic. New York. Includeil in New York Transition system, Champlain 
group. 
Potsdam sandstone, Vanuxem. Geol. of N. Y., pt. iii, pp. 28-^. 1842. 
Paleozoic. New York. Included in New York system. Includes Potsdam and 
Keeseville sandstone. No. 1, Pennsylvania Survey. 
Potsdam sandstone, Mather, (ieol. of N. Y., pt. i, pp. 418-421. 1843. 

Paleozoic. New York. Included in Champlain division. 
Potsdam sandstone. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 27. 1843. 
Paleozoic. New York. Included in New York system. Exact syn. No. 1, Penn- 
sylvania Survey. 
Potsdam sandstone, Emmons. Agric. of N. Y., vol. i, pp. 117-118. 1846. 

New York. Included in Champlain division of New York system. 
Potsdam sandstone, Murray. Can. Geol. Surv., Rept. of Prog., pp. 1847-48. 1849. 

Ontario. 
Potsdam sandstones, Foster and Whitney. Rept. on Geol. of I^ke Superior dist., 
pt. ii, p. 113, Special Sess., Mar. 1851. Ex. Doc. No. 4. 1851. 
Lake Superior region. 
Potsdam sandstone, Foster and Whitney. Am. Jour. Sci., 2d ser., vol. xvii, p. 29. 
Abstract. 1854. 
Silurian. Michigan. 
Potsdam sandstone, Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 47-49. 1858. 

Cambrian. Iowa. 
Potsdam sandstone, Whitney. Iowa Geol. Surv., vol. i, pt. i, pp. 328-331. 1858. 

Cambrian, Iowa. 
Potsdam sandstone, Shumard. Am. Jour. Sci., 2d ser., vol. xxxii, p. 216. 1861. 

Silurian. Texas. 
Potsdam, Hall. Am. Jour. Sci., 2d ser., vol. xxxi, p. 222. 1861. 

Vermont. 
Potsdam sandstone, Hayden. Am. Jour. Sci., 2d ser., vol. xxxi, p. 233. 1861. 

Silurian. South Dakota. 
Potsdam sandstone, Marcou. Boston. Soc. Nat. Hist., Proc, vol. viii, 1861-62, 
pp. 241-242. 1861. 
Vermont and Canada. Included in Upper Taconic of Marcou. 
Potsdam sandstone, Hitchcock. Geol. of Vt., vol. i, pp. 264-266. 1861. 

Paleozoic. Vermont. Included in Potsdam period. 
Potsdam sandstone, Whitney. Rept. on Upper Mississippi Lead region, p. 140. 
1862. 
Cambrian. Wisconsin. Exact syn. Lower sandstone. 
Potsdam, Billings. Am. Jour. Sci., 2d ser., vol. xxxii, pp. 100-105. 1862. 

Silurian. Vermont. 
Potsdam sandstone, Hayden. Am. Jour. Sci., 2d ser., vol. xxxiii, pp. 68-79. 1862. 

Silurian. South Dakota. 
Potsdam sandstone, Hayden. Am. Phil. Soc., Trans., new ser., vol. xii, pp. 36-38. 
1863. 
Cambrian. Black Hills. Included in Lower Silurian. 
Potsdam, Hall. Regents Univ. of N. Y., 16th Ann. Rept., pp. 210-220. 1863. 
Silurian. Lake Superior region, Mississippi Valley. Included in Lower Silurian. 
Includes Lower sandstone of Upper Mississippi Valley, Second sandstone, 
Third Magnesian limestone, Third sandstone, and Fourth Magnesian limestone 
of Missouri. 
Potsdam group, Chapman. Can. Inst., new ser., vol. viii, pp. 186-190. 1863. 
Cambrian. Canada. Included in Lower Silurian. Includes Beauharnois and 
Kaminstiquia formations. 



WEEKS.] POTSDAM. 331 

Potsdam group, Logan. Can. Geol. Surv., Rept., 1843-63, pp. 87-109. 1863. 

Cambrian. Canada. Included in Lower Silurian. 
Potsdam sandstone, Winchell. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 226-232. 
1864. 

Silurian. Wisconsin. 
Potsdam, Buckley. Prelim. Rept. on Geol. of Texas, pp. 16-22. 1866. 

Cambrian. Texas. 
Potsdam sandstone, Cook. Geol. of N. J., pp. 71-89. 1868. 

Cambrian. New Jersey. 
Potsdam sandstone. Perry. Am. Jour. Sci., 2d ser., vol. xlvii, p. 344. 1869. 

Silurian. Vermont. 
Potsdam group, Safford. Geol. of Tenn., by Safford, pp 182-226. 1869. 

Silurian. Tennessee. Included in Lower Silurian. Includes Ocoee conglomerate 
and slates, Chilhowee sandstone, and Knox group. 
Potsdam sandstone, White. Iowa Geol. Surv., vol. i, pp. 171-172. 1870. 

Cambrian. Iowa. Included in Primordial group of Lower Silurian. 
Potsdam group, Richardson. Can. Geol. Sur\., Rept., 1866-69, pp. 120-130. 1871. 

Cambrian. Canada. Included in Lower Silurian. 
Potsdam sandstone, Brooks. Am. Jour. Sci., 3d ser., vol. iv, pp. 22-26. 1872. 

Cambrian. New York. 
Potsdam sandstone, Irving. Wis. Acad. Sci., Trans., vol. i-ii, 1870-72, pp. 129-137. 
1872. 

Wisconsin. 
Potsdam sandstone, Eaton. Wis. Acad. Sci., Trans., vol. i-ii, 1870-72, p. 125. 1872. 

Wisconsin. 
Potsdam sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Ann. Rept., 1872, 
pp. 68-80. 1873. 

Silurian. Minnesota. 
Potsdam, Lower, Ford. Am. Jour. Sci., 3d ser., vol. vi, p. 134. 1873. 

Cambrian. New York. Exact syn. Olenellus or Georgia slates of Vermont, 
Olenellus limestones, and Labrador. 
Potsdam sandstone, Eaton. Am. Jour. Sci., 3d ser., vol. v, p. 446. 1873. 

Cambrian. Wisconsin. 
Potsdam, Newberry. Ohio Geol. Surv., vol. i, pt. i, pp. 58, 112. 1873. 

Silurian. Ohio. 
Potsdam sandstone, Winchell. Rept. of a Reconn. of the Black Hills by Capt. Lud- 
low, pp. 63-64. 1875. 

Cambrian. South Dakota. 
Potsdam sandstone, Irving. Am. Jour. Sci., 3d ser., vol. ix, p. 441. 1875. 

Cambrian. Wisconsin. Included in Primordial. 
Potsdam sandstone, Fontaine. Am. Jour. Sci., 3d ser., vol. ix, pp. 367-368, 419-421, 
424. 1875. 

Cambrian. Virginia. 
Potsdam, Prime. 2d Pa. Geol. Surv., Rept. D, pp. 5-7. 1875. 

Cambrian. Pennsylvania. Exact syn. No. 1. 
Potsdam, Hotchkiss. A Geogr. and Political Summary of Virginia, p. 22. 1876. 

Cambrian and Lower Silurian. Virginia. Exact syns. Primal, Formation No. i, 
Rogers. 
Potsdam, Smith. Ala. Geol. Surv., Rept., 1875, pp. 13, 132, 173. 1876. 

Cambrian. Alabama. 
Potsdam sandstone, Chamberlin. Geol. of Wis., vol. ii, pp. 257-267. 1877. 

Lower Silurian. Wisconsin. Includes Madison sandstone and Mendota limestone. 
Potsdam, Prime. Am. Phil. Soc., Proc, vol. xvi, p. 248. 1877. 

Pennsylvania. Exact syn. No. 1. 



332 NOBTH AMEBICAN GEOLOGIC FOBMATION NAME8. Ibull.191. 

Potwlam, Kmmons. IT. R. Geo). P^xpl. of 40th Parallel, vol. ii, p. 343 et seq. 1877. 

Cambrian. Utah. 
Potedam sandfltone, Prime. Am. Jour. Sci., 3d ser., vol. xv, p. 262. 1878. 

Cambrian. Pennsylvania. 
Potsdam, Prime. 2d Pa. Geol. Surv., Rept. D^ pp. 7-10. 1878. 

Cambrian. Pennsylvania. Exact syn. No. 1. 
Potsdam, Endlich. U. S. (ieol. and Geog. Surv. of Terr., 11th Ann. Rept., pp. 70, 
101, 118. 1879. 

Silurian. Wyoming. 
Potsdam sandstone, Wadsworth. Harvani Coll. Mus. Comp. Zool., Bull., vol. vii, 

1880-1884, p. 60. 1880. 
Potsdam sandstone, Newton. Geol. of Black Hills, pp. 80-107. 1880. 

Cambrian. South Dakota. 
Potsdam sandstone. Strong. Geol. of Wis., vol. iii, pp. 395-397. 1880. 

Cambrian. Wisconsin. Includes Madison sandstone and Mendota limestone. 
Potsdam sandstone, Whittlesey. Geol. of Wis., vol. iii, p. 220. 1880. 

Cambrian. Wisconsin. 
Potsdam, Hall. 2d Pa. Geol. Surv., Rept. C«, pp. 38-46. 1881. 

Cambrian. Pennsylvania. Exact syn. Rogers's Primal. 
Potsdam group, Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, p. 267. 1881. 

Ordovician. 
Potsdam, Piatt. 2d Pa. Geol. Surv., Rept. T, p. 51. 1881. 

Cambrian. Pennsvlvania. 
Potsdam sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 10th Ann. Rept., 
pp. 123-136. 1882. 

Minnesota. 
Potsdam sandstone, Wooster. (Jeol. of Wis., vol. iv, pp. 109-123. 1882. 

(^ambrian, Wisconsin. 
Potsdam sanrlstone, Strong. (Jeol. of Wis., vol. iv, pp. 38-64. 1882. 

Cambrian. Wisconsin. 
Potsdam, Selwyn. Science, vol. i, p. 11. 1883. 

Cambrian. Canada. 
Potsdauj, Iwesley. 2d Pa. (xeol. Surv., Rept. C*, pp. 144-160. 1883. 

(Cambrian. Pennsylvania. Exact syn. Primal slate of Rogers. 
Potsdam, D'Invilliers. 2d Pa. (^eol. Surv., Rept. I)^, pt. ii, pp. 99-136. 1883. 

Cambrian. Pennsylvania. Exact syn. No. 1. 
Potsdam, Prime. 2d Pa. (Jeol. Surv., Rept. I)\ pt. i, pp. 205-214. 1883. 

Cambrian. Pennsylvania. Exact syn. No. 1. 
Potsdam, Chaml>erlin. Geol. of Wis., vol. i, p. 119. 1883. 

Cambrian. Wisconsin. 
Potsdam quartzite, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 
p. 587. 1884. 

Minnesota. 
Pot«»dam quartzite, Upham. Minn. (ieol. and Nat. Hist. Surv,, Final Rept., vol. i, 
p. 572. 1884. 

Minnesota. 
Potsdam group, Campbell. The Virginias, vol. vi, p. 99. 1885. 

Cambrian. A'irginia. 
Potsdam group, Campl)ell. Am. Jour. Sci., 3d ser., vol. xxix, pp. 470-474. 1885. 

Cambrian. Virginia. 
Potsdam, Dwight. Am. Jour. Sci., 3d ser., vol. xxxi, pp. 125-132. 1886. 

Cambrian. New York. 



1 



WEEKS] POTSDAM P0TT8T0WN. 333 

Potsdam, Dwight. Ajn. Assoc. Adv. Sci., Proc, vol. xxxiv, ]>. 204. 1886. 

Cambrian. New York. 
Potsdam sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. ii, 
pp. 117, 157. 1888. 

Cambrian. Minnesota. 
Potsdamic, Hitchcock. Boston Soc. Nat. Hist., Proc., vol. xxiv, 1888-90, p. 37. 1888. 
Potsdam group. Miller. N. A. Geol. and Pal., p. 29. 1889. 

Potsdam, Winchell. Minn. Geol. and Nat. Hist. Surv., 17th Aim. Rept., pp. 49-56. 
1889. 

Minnesota. 
Potsdam sandstone. Hall. Minn. Acad. Nat. Sci., Bull., vol. iii, p. 135. 1889. 

Cambrian. Minnesota. 
Potsdam, Walcott. U. S. Geol. Surv., Bull. No. 87, pp. 113, 180, 202, 214, 217, 244. 
1891. 

Cambrian. Lake Superior, Rocky Mts., Texas, Appalachian region. Included in 
Upper Cambrian. 
Potsdam sandstone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 333. 1891. 

Cambrian. Iowa. 
Potsdam sandstone, Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, p. 335. 1892. 

Cambrian. Minnesota. Included in Upper Cambrian. 
Potsdam, Prosser. Geol. Soc. Am., Bull., vol. iv, pp. 108, 110. 1893. 

Cambrian. New York. 
Potsdam sandstone, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 410-417. 1894. 

Cambrian. New York. 
Potsdam sandstone, Cushing. N. Y. State (ieol., 13th Ann. Rept., pp. 478-479. 1894. 

Cambrian. New York. 
Potsdam, Cushing. Geol. Soc. Am., Bull., vol. vi, p. 287. 1895. 

Cambrian. New York. 
Potsdam, Udden. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 839. 1896. 

Cambrian. Illinois. 
Potsdam sandstone, Cushing. N. Y. State (xeol., 15th Ann. Rept., vol. i, p. 510. 1897. 

Cambrian. New York. 
Potsdam sandstone, Buckley. Wis. Geol. and Nat. Hist. Surv., Bull. No. 4, Econ. 
ser.. No. ii, pp. 167-248. 1898. 

Cambrian. Wisconsin. 
Potsdam sandstone, Wadsworth. Am. Inst. Mg. Engrs., Trans., vol. xxvii, p. 683. 
1898. 

Cambrian. Lake Superior region. 
Potsdam formation, Walcott. Geol. Soc. Am., Bull., vol. x, p. 225. 1899. 

Cambrian. Wisconsin. 
Potsdam sandstone, Salisbury and Atwood. Wis. Geol. and Nat. Hist. Surv., Bull. 
No. 5, Ed. ser., no. i, pp. 27-31. 1900. 

Cambrian. Wisconsin. 
Pottawatomie formation, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 92-93,94. 
1898. 

Carboniferous. Kansas. Included in Upper Coal Measures. Includes Garnett 

limestones. Lane shales, Iowa limestones, Thayer shales, and Erie limestone. 

Potters Clay formation, Rogers. N. J. Geol. Surv., Final Rept., pp. 179-186. 1840. 

Cretaceous. New Jersey. 
Pottery shale, Wheeler. Mo. Geol. Surv., vol. ix, Sheet Rept., No. 2, p. 65. 1896. 

Carboniferous. Missouri. Included in Coal Measures. 
Pottstown shale, Lyman. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, pp. 
2607-2608. 1895. 

Juratrias. Pennsylvania. Included in New Red. 



334 NORTH AMKRK AN OEOL(KHC FORMATION NAMES. [bull-IW. 

Pottsville conglomerate, Aalibiimer. Am. Phil. Soc., Proc., vol. xvi, pp. 520,535. 
1877. 
CarlK)uiferoiiH. Pennsylvania. Included in Piedmont sandstone, Kanawha River 
coal series. Kxact syns. Serai, Millstone grit. 
PottMville conglomerate, Stevenson. 2d Pa. (Jeol. Surv., Rept. K'^, pp. 91-95. 1877. 

CarlK)niferous. Pennsylvania. Exact syn. Serai. 
Pottsville conglomerate, Piatt. 2(1 Pa. Geol. Sarv., Rept. H'', pp. xxiv-xxvi. 1877. 
Pottsville conglomerate, Stmenson. 2(1 Pa. (Jeol. Surv., Rept. K^ pp. 44-46. 1878. 

Carboniferous. Pennsylvania. P^xact. syn. Serai. 
Pottsville conglomerate, Ashburner. 2d Pa. (leol. Surv., Rept. F, pp. 191-194. 1878. 

Carl)oniferous. Pennsylvania. Exact, syn. Serai conglomerate. 
Pottsville conglomerate, Chance. 2(1 Pa. (leol. Surv\, Rept. V, pp. 31-34. 1879. 
Carboniferous. Pennsylvania. Includes Homewood sandstone, Mercer group, 
Connoquent^ssing sandstone. Exact syn. No. 12. 
Pottsville, Chance. 2d Pa. (Jeol. Surv., Rept. V*, pp. 59-63, 1880. 

Carboniferous. Pennsylvania. 
Pottsville, Ashburner. 2d Pa. CJeol. Surv., Rept. R, pp. 49-62 1880. 
Carboniferous. Pennsylvania. Includes Johnson River sandstone, Kinzua Creek 
sandstone, and Olean conglomerate. Exact syns. Serai, Millstone grit. 
Pottsville, White. 2d Pa. Geol. Surv., Rept. Q*, pp. 55-65. 1881. 
Carboniferous. Pennsylvania. Includes Homewood sandstone, Mercer group, 
Conno(juenessing group, and Sharon group. Exact syn. No. 12. 
Pottsville conglomerate. White. 2d Pa. <ieol. Surv., Rept. G^ pp. 45-53. 1881. 

Carboniferous. Pennsvlvania. Exact svn. No. 12. 
Pottsville, Piatt. 2d Pa. (ieol. Surv., Rept. H*, pp. xxxiii-xxxiv. 1881. 

Carboniferous. Pennsylvania. Exact syn. No. 12. 
Pottsville, Stevenson. 2d Pa. i^eol. Surv., Rept. T*, pp. 65-67. 1882. 

CarlK)niferous. Pennsylvania. 
Pottsville, Carll. 2d Pa. Geol. Surv., Rept. I*, pp. 185-189. 1883. 
Carl)oniferous. Pennsylvania. Includes Johnsons River rock, Kinzua Creek sand- 
stone, and Olean conglomerate. Exact syn. No 12. 
Pottsville, White. 2d Pa. (ieol. Surv., Rept. T^ pp. 69-73. 1885. 
Carboniferous. Pennsylvania. Includes Homewood (Johnson River) sandstone, 
Connoquenessing (Kinzua Creek) sandstones, and Sharon conglomerate. 
Pottsville conglomerate, Ashburner. 2d Pa. Geol. Surv., Rept R*, p. 399. 1885. 

Carboniferous. Pennsylvania. Exact syn. No. 12. 
Pottsville conglomerate, Winslow. 2d Pa. Geol. Surv., Ann. Rept, 1886, pt iv, 
pp. 1337, 1303. 1887. 
Carl)oniferous. Pennsylvania. Exact syn. No. 12. 
Pottsville, Carll. 2d Pa. Geol. Surv., Rept. I^ pp. 111-112, 126-128. 1890. 

Carboniferous. Pennsylvania. 
Pottsville conglomerate, White. U. S. Geol. Surv., Bull. No. 65, p. 179. 1891. 
Carboniferous. Ohio, Pennsylvania, West Virginia. Included in Homewood sand- 
stone, Mercer group, Connoquenessing sandstone. New River Coal group, 
and Sharon conglomerate. 
Pottsville conglomerate, White, (ieol. Soc. Am., Bull., vol. iii, p. 190. 1892. 

Upper Carboniferous. West Virginia. 
Pottsville, Williams and Clark. Maryland. Its Resources, Industries, and Institu- 
tions, p. 72. 1893. 
Carboniferous. Marvland. Part. svn. No. xii. 
Potts\'ille conglomerate. Smith. 2d Pa. Geol. Surv., Final Rept, vol. iii, pt i, pp- 
1853-1855, 1949-1951 et seq. 1895. 
Carboniferous. Pennsvlvania. Exact svn. No. xii. 



WEEKS] FOTTSVILLE PRIMAL. 335 

Pottsville conglomerate, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, 
pp. 1857-1915. 1895. 
Carboniferous. Pennsylvania. Includes Homewood'or Johnson River sandstone, 
Connoquenessing or Kinzua sandstone, and Sharon, Glean, or Garland con- 
glomerate. Exact syn. No. 12, Serai conglomerate of Rogers. 
Pottsville formation, Clark. Md. Geol. Surv., vol. i, pp. 156, 185-186. 1897. 

Carboniferous. Maryland. Exact, syn. Blackwater formation. 
Pottsville, Clark. Md. Geol. Surv., vol. ii, p. 208. 1898. 
Carboniferous. Maryland. Included in Coal Measures. 
Pottsville conglomerate, White. W. Va. Geol. Surv., vol. i, p. 202. 1899. 

Carboniferous. West Virginia. 
Pottsville, Clark. Md. Geol. Surv., vol. iii, p. 100. 1899. 
Carboniferous. Maryland. Included in Coal Measures. 
Pottsville formation, White. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 755-865. 
1900. 
Carboniferous. Pennsylvania. Includes Clark, Quinnemont, Sewell, and Lookout 
formations, and Fayette sandstone. 
Pottsville formation, O'Harra. Md. Geol. Surv., Allegany County, p. 113. 1900. 

Carboniferous. Maryland. 
Pougrhquag limestone and quartzite, Dana. Am. Jour. Sci., 3d ser., vol. iii, pp. 252- 
253, 255. 1872. 
Silurian. New York. 
Powelton shale, White. 2d Pa. Geol. Surv., Rept. T^ pp. 61-62. 1885. 

Carboniferous. Pennsylvania. 
Poxono Island shale. White. 2d Pa. Geol. Surv., Rept. G«, pp. 145-147. 1882. 

Silurian. Pennsylvania. Included in Upper Helderburg or No. vi. 
Poxono Island shale and limestone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, 
pp. 934-935. 1892. 
Silurian. Pennsylvania. Included in No. vi. 
Poxono Island shale, Weller. N. J. Geol. Surv., Rept. 1899, pp. 5-6. 1900. 

Silurian. New Jersev. 
Prairie Bluff limestone, Winchell. Am. Assoc. Adv. Sci., Proc, vol. x, p. 90. 1856. 

Cretaceous. Alabama. Included in Upper Cretaceous. 
Prairie d'Ane or White Clay till. Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 32-33. 
1888. 
Post-Tertiary. Arkansas. 
Pre-Meridian series, Rogers. Geol. of Pa., vol. i, pp. 107, 136-137, 272 et seq., 
vol. ii, p. 754. 1858. 
Silurian. Pennsylvania. Exact, syn. Lower Ilelderberg. 
Preston beds, Hill. Geol. Soc. Am., Bull., vol. v, p. 302. 1894. 

Cretaceous. Texas. Included in Washita division. Includes Duck Creek and 
Kr'amitia. 
Price sandstone, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 177. 1894. 

Lower Carboniferous. Virginia. Included in Pocono. 
Price, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Carboniferous. Virginia and West Virginia. 
Price sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Carboniferous. Virginia and West Virginia. Exact syn. No. x, Montgomery grits. 
Primal series, Rogers. Am. Jour. Sci., 1st ser., vol. xlvii, p. 155. 1844. 
Primal series, Rogers. Geol. of Pa., vol. i, pp. 104, 122-123, 150-207 et seq., vol. ii, 
p. 751. 1858. 
Cambrian. Pennsylvania. Part. ayn. Potsdam. 



33(> NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bullWL 

Primal, Walcott. U. S. Gch>1. Surv., Bull. No. 81, pp. 126, 251, 288. 1891. 

Cambrian. Appalachian region. 
Primedidial nerien, R^jgers.. Am. Jour. 8ci., Ist ser., vol. xlvii, p. 155. 1844. 
Silurian. Includes Pentamerua and Catskill shaly limestone and Oriskany lime- 
stone. 
Princeton conglomerate, Campbell. U. S. Geol. Surv., (Jeol. Atlas of U. S., Folio 
No. 26. 1896. 
( 'arI)oniferou8. Virginia and West Virginia. 
Princeton conglomerate, Campl)ell and Mendenhall. U. S. Geol. Surv., 17th Ann. 
Kept, pt. ii, p. 489. 1896. 
Carlx)niferou8. West Virginia. Included in No. xii of Rogers, Conglomerate 
series of Fontaine. 
Princeton conglomerate, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 
Carboniferous. Virginia and West Virginia. Part. syns. No. xi, Greenbrier shale 
Rogers. 
Procamelus lx?ds, Cope. U. S. Geol. and Geog. Surv. of Terr., vol. v, pp. 51-52. 
1879. 
Tertiary. Include<l in Ix)Up Fork. 
Proctor limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Cambrian. MiK«onri. Includeil iniiasconade limestone, Ozark series. 
Productal limestone, Owen. (icol. Reconn. State of Indiana, Rept in 1837, p. 22. 
1859. 
Indiana. Included in Subcarboniferous limestone. 
Productive coal measures, l'j)per and Lower, Rogers. Geol. of Pa., vol. 1, p. 109. 
1856. 
Carboniferous. Pennsylvania. Included in Serai series. 
Prixluctive measures, Upper, Stevcns«on. 2d Pa. Geol. Surv., Rept. K, pp. 57-74, 
84-88. 1876. 
Carl)oniferous. Pennsylvania. Includes Waynesburg sandstone, Great limestone, 
Fish pot limestone, and Pittsburg sandstone. 
Pnnluctive series, rp|>er, Stevenson. 2d Pa. Geol. Surv., Rept. K', pp. 30-63. 
1877. 
Carlw^niferous. Pennsylvania. Includes Waynesburg sandstone and limestone, 
Gn»at limestone, Fishpot limes^tone, and Redstone limestone. 
Prtxluctive series. Lower, Stevenson. 2d Pa. Geol. Surv., Rept. K*, pp. 73-90. 
1877. 
Carl>oniferous. Pennsylvania and West Virginia. Includes Mahoning sandstone, 
Fret^port limestone, and Piedmont si\ndstone ( = Tionesta). 
PnMluctive series, Lower, White. 2d Pa. Geol. Surv., Rept. Q*, pp. 27-51. 1877. 
CarlH)niferous. Pennsylvania. Includes Free|x)rt or Butler sandstone and lime- 
stone, Kittanning sandstone, and Ferriferous limestone. 
Pnxluctive measures, I^>wer, Ashburner. 2d Pa. Geo], Sur\\, Rept F, pp. 184-191. 
1878. 
CarlK)niferous. Pennsylvania. Exact tsyn. Allegheny River series. 
Prixiuctive series, rpi>er, White. 2d Pa. Geol. Surv., Rept, Q, pp. 21-22. 1878. 

Carlxmiferous. Pennsylvania. 
IVnluctive series, I^>wer, White. 2d Pa. Cieol. Surv., Rept, Q, pp. 39-64. 1878. 
Carlxmiferous. Pennsylvania. Includes FreeiKjrt limestone, Butler sandstone 
and limestone, Kittanning sandstone, and Ferriferous limestone. 
Proiluctive series, Up}>er, Steven^on. 2d Pa. Geol. Sun., Rept K', pp. 14-17. 
1878. 
CarUtniferou?. Pennsvl vania. 



i 



WEEKS.] PRIMAL PRODUCTIVE. 337 

Productive series, Lower, Stevenson. 2d Pa. Geol. Siirv., Kept. K', pp. 27-43. 1878. 

Carboniferous. Pennsylvania. Includes Mahoning sandstone, Freeport limestone 

and sandstone, Kittanning limestone, Bolivar sandstone, and Clarion sandstone. 

Productive measures, Upper, Piatt. 2d Pa. Geol. Surv., Kept. H*, pp. 155-165. 1878. 

Carboniferous. Pennsylvania. 
Productive measures, Lower, Piatt. 2d Pa. Geol. Surv., Rept. II*, pp. 175-231. 1878. 

Carboniferous. Pennsylvania. 
Productive measures. Lower, Chance. 2d Pa. Geol. Surv., Rept. V, pp* 15-29. 1879. 
Carboniferous. Pennsylvania. Includes Freeport group, Mahoning sandstone, 
Kittanning group, and Ferriferous limestone. 
Productive measures. Lower, White. 2d Pa. Geol. Surv., Rept. Q', pp. 22-32. 1880. 

Carboniferous. Pennsylvania. Includes Ferriferous limestone. 
Productive measures. Lower, Ashburner. 2d Pa. Geol. Surv., Rept. R, pp. 45-48. 
1880. 
Carboniferous. Pennsylvania. 
Productive measures. Lower, Chance. 2d Pa. Geol. Surv., Rept. V*, pp. 31-56. 1880. 
Carboniferous. Pennsylvania. Includes Freeport group, Kittanning group, Johns- 
town cement limestone. Clarion group, and Ferriferous limestone. 
Productive measures, Upper, Piatt. 2d Pa. Geol. Surv., Rept. H*, pp. 43-291. 1880. 

Carboniferous. Pennsylvania. 
Productive measures, Lower, Piatt. 2d Pa. Geol. Surv., Rept. H^, p. 313. 1880. 

Carboniferous. Pennsylvania. 
Productive measures, Lower, Chance. 2d Pa. Geol. Surv., Rept. H', pp. 25-80. 
1884. 
Carboniferous. Pennsylvania. 
Productive measures. Lower, Ashburner. 2d Pa. Geol. Surv., Rept. R^, p. 393. 
1885. 
Carboniferous. Pennsvlvania. 
Productive measures. Upper, D'lnvilliers. 2d Pa. Geol. Surv., Ann. Rept., 1885, 
pp. 171-177. 1886. 
Carboniferous. Pennsylvania. 
Productive measures, Lower, Piatt. 2d Pa. Geol. Surv., Rept. H*, pp. xxix-xxxii. 
1887. 
Carboniferous. Pennsylvania. Included in Freeport group, Kittanning group, and 
Clarion group. 
Productive measures, Upper, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept., 1886, 
pp. 63-74, 206-208, 264-265, 291-295, 336-341. 1887. 
Carboniferous. Pennsylvania. Exact syn. Monongahela River series. 
Productive measures, Lower, D'Invilliers. 2d Pa. Geol. Surv., Ann. Rept, 1886, 
pp. 79-81. 1887. 
Carboniferous. Pennsylvania. Exact syn. Allegheny River series. 
Productive measures, Upper, Carll. 2d Pa. Geol. Surv., Rept. I^ pp. 122-123. 1890. 

Carboniferous. Pennsylvania. Exact syn. Monongahela series. 
Productive measures. Lower, Carll. 2d Pa. Geol. Surv., Rept. P, pp. 125-126. 1890. 

Carboniferous. Pennsylvania. Exact syn. Allegheny series. 
Productive group. Squire. Ala. Oeo\. Surv., Rept. on Cahaba coal field, p. 14 et seq. 
1890. 
Carboniferous. Alabama. Included in Coal Measures. 
Productive serieS, Upper, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, 
pt. ii, pp. 2448-2564. 1895. 
Carboniferous. Pennsylvania. Exact syns. No. xv, Monongahela River series. 
Productive measures. Lower, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, 
pt. ii, pp. 2155-2405. 1895. 
Carboniferous. Pennsylvania. Exact syns. No. xiii, Allegheny River series. 

Bull. 191—02 22 



338 NORTH AMERICAN GEOLOGIC JlORMATION NAME8. [bull.191. 

Prospect Mountain limestone and quartzite, Hague. U. S. Geol. Surv., 3d Ann. 
Kept., pp. 253, 254. 1883. 

Cambrian. Nevada. 
Prospect, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 252, 313. 1891. 

Cambrian. Nevada. 
Prospect Mountain limestone, Hague. U. 8. Geol. Surv., Mon., vol. xx, p. 36. 1892. 

Cambrian. Nevada. 
Prospect Mountain quartzite, Hague. U. S. Geol. Surv., Mon., vol. xx, p. 35. 1892. 

Cambrian. Nevada. 
Protean group, Vanuxem. N. Y. Geol. Surv., 4th Ann. Rept., pp. 374-375. 1840. 

Silurian. New York. 
Protean group, Hall. Am. Jour. Sci., Ist ser., vol. xlii, p. 60. 1842. 

New York and Ohio. 
Protocera^ beds, Wortman. Am. Mus. Nat. Hist., Bull., vol. v, 1893, pp. 101-102. 
1893. 

Lower Miocene. South Dakota. Included in White River sediments. Includes 
Uppermost strata of Oreodon beds. 
Protoceras, Wortman. Am. Mus. Nat. Hist., Bull., vol. v, pp. 96, 101. 1893. 

Tertiary. Included in White River or Ixjwer Miocene. - 
Pteranodon beds, Marsh. IT. S. Geol. Surv., Mon., vol. xxvii, p. 476. 1896. 

Cretaceous. Colorado. 
Pteranodon l)eds, Logan. Jour, of Geol., vol. vii, pp. 90-91. 1899. 

Cretaceous. Kansas and Nebraska. Included in Niobrara. Exact syns. Apishapa 
and Upper Timber l)eds. 
Puckwunge conglomerate, Winchell. Am. Geol., vol. xx, pp. 50-51. 1897. 

Algonkian. Minnesota. 
Puckwunge conglomerate, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept, 
vol. iv. pp. 13, 517. 1899. 

Cambrian. Minnesota. Included in Keweenawan. 
Puckwunge conglomerate, Winchell. Minn. (ieol. and Nat. Hist. Surv., Final Rept., 
vol. v, p. 54. 1900. 

Cambrian. Minnesota. 
Puerco marl. Cope. Rept. of Secy, of War to 44th Cong., vol. ii, pt. ii, p. 1012. 
1875. 

Tertiary. New Mexi(;o. Included in Eocene. 
Puerco marl. Holmes. U. S. Geol. and Geog. Surv. of Terr., 9th Ann. Rept, p. 248. 
1877. 

Cretareous. Colorado. Exact syu. Bad Land group. 
Puerco marl, Endlich. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept, p. V2'^. 
1878. ' . 

Tertiary. Colorado. Included in Wahsatch group. 
Puerco, Cope. U. S. Geol. and Geog. Surv. of Terr., Mon., vol. iii. pp. 3-6. 1881. 

Tertiary. 
Puerco, Clark. U. S. Geol. Surv., Bull. No. 83, p. 137. 1891. 

Tertiary. Colorado and New Mexico. 
Puerco beds, Osborn and Earle. Am. Mus. Nat. Hist., Bull., vol. vii, 1895, pp. 1-3- 
1895. 

New Mexico. Included in Basal Eocene. 
Puerco beds, Marcou. Am. Geol., vol. xix, pp. 120-121. 1897. 

Tertiary. 
Puerco, Matthew. Am. Mus. Nat. Hist., Bull., vol. ix, 1897, pp. 259-323. 1897. 

Eocene. New Mexico. Included in Basal Eocene. 
Puerco beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt ii, p. 347. 1898. 

Tertiary. New Mexico and Colorado. Included in Eocene. Part. syn. Torregon 
formation. 



WEEKS.] PROSPECT PUTNAM HILL. 339 

Puerco formation, Smith. Jour, of (Jeol., vol.- viii, pp. 448-449. 1900. 

Tertiary. Western North America. Included in Eocone. . 
Puget group, White. Am. Jour. Sci., 3d ser., vol. xxxvi, pp. 443-450. 1888. 

Cretaceous. Washington. Exact syn. Laramie. 
Puget group, White. U. S. Geol. Surv., Bull. No. 51, pp. 49-63. 1889. 

Cretaceous. Washington. 
Puget, White. U. 8. Geol. Surv., Bull. 51, p. 49, 1889. U. S. Geol. Surv., Bull. 

No. 82, p. 196. 1891. 

Cretaceous. Pacific coast. Included in Upper Cretaceous. 
Puget, Clark. U. S. Geol. Surv., Bull. No. 83, p. 107. 1891. 

Tertiary. Washington. Included in Eocene. Exact syn. Tejon (?). 
Puget group, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 229. 1892. 

Tertiary. Washington. 
Puget group, Kimball. Am. Geol., vol. xix, pp. 305-306. 18H7. 

Cretaceous or Eocene. Washington. 
Puget group (epoch), Willis. Geol. Soc. Am., Bull., vol. ix, p. 2. 1897. 

Tertiary. Washington. Part. syn. Tejon. 
Puget group, Dall. U. S. Geol. Surv. , 18th Ann. Rept. , pt. ii, p. 347. 1 898. 

Tertiary. Washington. Included in Eocene. 
Puget formation, Willis. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 400-412. 1898. 

Tertiary. Washington. 
Puget formation, Willis and Smith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 54. 1899. 

Tertiary. Washington. Included in Eocene. 
Puget formation. Smith. Jour, of Geol., vol. viii, pp. 457-459. 1900. 

Tertiary. Washington. Included in Eocene. 
Pugh, Taff and Brooks. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 34. 1896. 

Carboniferous. West Virginia. 
Pulaski shales, Vanuxem. N. Y. GeoL Surv., 4th Ann. Rept., pp. 373-374. 1840. 

New York. 
Pulaski shale, Vanuxem. (ireol. of N. Y., pt. iii, p. 64. 1842. 

Paleozoic. New York. Included in Hudson River group. 
Pulaski shale, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 178. 1894. 

Lower Carboniferous. Virginia. Part. syn. Umbral. 
Pulaski shale, ( ampbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Carboniferous. Virginia and West Virginia. 
Pulaski formation, Diller. U. S. Geol. Surv., 19th Ann. Rt^pt., pt. iii, pp. 319-320. 
1899. 

Tertiary. Oregon. Included in Arago, Eocene. 
Pulliam formation, Vaughan. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 64. 
1900. 

Cretaceous. Texas. Included in Gulf series. 
Purgatory conglomerate, Shaler, Wood worth and Foerste. U. S. Geol. Surv., Mon., 
vol. xxxiii, pp. 363-374. 1899. 

Carboniferous. Rhode Island. 
Putnam Hill limestone, Andrews. Ohio Geol. Surv., Re])t. Prog., 1869, p. 84. 1870. 

Ohio. 
Putnam Hill limestone, Andrews. Ohio Geol. Surv., Rept., 1869, p. 88. 1871. 

Ohio. 
Putnam Hill limestone, Andrews. Ohio Geol. Surv., vol. i, pt. i, p. 315. 1873. 

Carboniferous. Ohio. Included in (/oal Measures. 
Putnam Hill limestone, Orton. Ohio Geol. Surv., vol. v, p. 20. 1884. 

Carboniferous. Ohio. 
Putnam Hill limestone. White. The Virginias, vol. vi, p. 15. 1885. 

Carboniferous. West Virginia. Included in Coal Measures. 



340 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Putnam Hill limestone, clay and shales, Orton. Ohio Geol. Surv. , vol. vii, p. 63. 1893. 

Carboniferous. Ohio. 
Putnam ville stone, Collett. Indiana Dept. Statistic* and Geology, 2d Ann. Rept., 
1880, p. 409. 1880. 

Indiana. 
Puyallup epoch (sands), Willis. Geol. Soc. Am. Bull., vol. ix, pp. 145, 146. 1898. 

Pleistocene. Washington. 
auadrant, Peale. IT. S. (Jeol. Surv., Bull. No. 110, p. 39. 1893. 

Carboniferous. Montana. 
Quadrant quartzite, Iddings and Weed. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio No. 1. 1894. 

Carboniferous. Montana. 
Quadrant, Peale. U. S. (ieol. Surv., Geol. Atlas of U. S., Folio No. 24. 1896. 

Carboniferous. Montana. 
Quadrant quartzite. Weed. IT. S. Geol. Surv., (xeol. Atlas of U. S., Folio No. 30. 
1896. 

Carboniferous. W yomi ng. 
Quadrant, Weed and Pirsson. U. S. Geol. Surv., Bull. No. 139, p. 41. 1896. 

Carboniferous. Montana. 
Quadrant formation. Weed. IT. S. Geol. Surv., Geol. Atlas of U. S., Folios No. 55, 56. 
1899. 

Carboniferous. Montana. 
Quadrant formation, Iddings and Weed. I". S. Geol. S^jrv., Mon., vol. xxxii, pt. ii, 
pp. 1-59, 149-164. 1899. 

Carboniferous. Yellowstone Park. 
Quadrant group. Weed. U. S. (xeol. Surv., 20th Ann. Kept., pt. iii, pp. 294-298. 
1900. 

Carboniferous. Montana. Includes Kibl)ey sandstone and Otter shale, 
auakertown shale, White. 2d Pa. Geol. Surv., Rept. Q^ p. 66. 1877. 

Carboniferous. Pennsylvania. Included in No. 12, or Pottsville. 
Quakertown coal group, Piatt. 2d Pa. Geol. Surv... Rept. H^ p. 326. 1880. 

Carboniferous. Pennsvlvania. 
Quakertown coal and sandstone, Orton. Ohio Geol. Surv., vol. vii, pp. 59,60. 1893. 

Carboniferous. Ohio. 
Quarry Creek limestone, Worthen. 111. Geol. Surv., vol. vi, pp. 10-11, 12-17. 1875. 

Carboniferous. Illinois. rnclnde<i in Coal Measures. 
Quarry Creek and Martinsville limestone, Worthen. Kcon. Geol. of III., vol. lu, 
p. 339. 1882. 

Carl)oniferous. Illinois. Included in Coal Measures. 
au€ui;z rock, Hitchcock. Geol. of Vt., vol. i, pp. 342-:i57. 1861. 

(^ambrian (?). Vermont. Exact syns. Graiuilar quartz and Potsdam sandstone. 
Quartz slate member. Van Hise. V. S. Geol. Surv., 10th Ann. Rept., p. 370. 1890. 

Algonkian. Wisconsin and Minnesota. Included in Penokee. 
Quartz slate member, Irving ami Van Hise. U. S. Geol. Surv., Mon., vol. xix, p. 143- 
1892. 

Algonkian. Lake Superior regi(m. Includeil in Penokee series. 
Quebec group, Logan. Can. Inst., new ser., vol. vi, pp. 40-46. 1861. 

Cambro-Silurian. Canada. 
Quebec group, Logan. Am. Jour. Sci., 2d ser., vol. xxxi, pp. 216-220. 1861. 

Silurian. Canada. 
Quebec group, Hall. Boston Soc. Nat. Hist., Proc., vol. viii, 1861-62, p. 185. 1861. 

Paleozoic. 

•lebec group, Hall. Am. Jour. Sci., 2d ser., vol. xxxi, pp. 220-226. 1861. 

Silurian. Vermont. 



WEEKS.] PUTNAM HILL — QUEBEC. 341 

Quebec group, Logan. Can. Geol. Surv., Rept., 1843-1863, pp. 225-297, 844-880. 
1863. 
Lower Silurian. Canada (eastern). Included in Canadian formation. Includes 
Levis and Sillery formations. Part. syns. Chazy and Calciferous. 
Quebec group, Logan. Am. Jour. Sci., 2d ser., vol. xxxvi, p. 368. 1863. 

Silurian. Canada. 
Quebec group, Chapman. Can. Inst., new ser., vol. viii, pp. 186, 191-195. 1863. 
Silurian. Canada. Included in Lower Silurian. Includes Chazy or Sillery, and 
Calciferous or Levis. 
Quebec group. Hind. Geol. of New Brunswick, p. 143. 1865 

Silurian. New Brunswick. Include<l in Lower Silurian. 
Quebec group, Richardson. Can. Geol. Surv., Rept, 1863-1866, pp. 29-48. 1866. 

Lower Silurian. Canada (Eastern). Includes I^^vis, Lauzon, and Sillery divisions. 
Quebec group, Logan. Can. (xeol. Surv., Rept., 1863-1866, pp. 4-5. 1866. 
Lower Silurian. Canada. Includes L^vis, Lauzon, and Sillery divisions. 
Quebec group, Richardson. Can. Geol. Surv., Rept., 1866-1869, pp. 145-155. 1871. 

Lower Silurian. Canada. Includes L^vis, Lauzon, and Sillery formations. 
Quebec group. Hunt. Boston Soc. Nat. Hist., Proc, vol. xix, 1876-1878, pp. 2-4. 

1876. 
Quebec, Hunt. 2d Pa. Geol. Surv., Rept. E, pp. 101-108. 1878. 

Cambrian. Canada. 
Quebec, St. John. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., p. 481. 
1879. 
Silurian. Idaho. Included in Canadian. Includes Upper and Lower Quel)ec. 
Quebec group, Selwyn. Can. Geol. Surv., Rept., 1877-78, p. lA. 1879. 

Cambro-Silurian. Canada. Includes 3 groups of strata, Lower Silurian group, 
Volcanic group. Crystalline Schist group [Huronian (?)]. 
Quebec group, Macfarlane. Can. Nat., 2d ser., vol. ix, pp. 91-102. 1880. 

Cambro-Silurian. Canada. 
Quebec group, Selwyn. Can. Nat., 2d ser., vol. ix, pp! 17-31. 1880. 

Cambro-Silurian. Canada. Included in Lower Silurian. Includes Lower Silurian 
group, L^vis formation. Volcanic group, and Crystalline Schist group. 
Quebec group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, no. iv, pp. 270, 277. 

1881. 
Quebec group. Ells. Can. Geol. Surv., Rept., 1880-81-82, pp. 16DD-31DD. 1883. 
Cambro-Silurian. New Brunswick. Includes L^vis, Lauzon, and Sillery 
formations. 
Quebec group, Selwyn. Can. Roy. Soc, Proc. and Trans., 1882-83, vol. i, sec. iv, 
pp. 1-13. 1883. 
Cambro-Silurian. Canada. Includes Pre-Cambrian, Cambrian and Cambro- 
Silurian. 
Quebec group, Selwyn. Science, vol. ix, p. 267. 1887. 

Silurian. Canada. 
Quebec group. Miller. N. A. Geol. and Pal., p. 34. 1889. 
Quebec group. Ells. Can. Geol. Surv., new ser., vol. iii, pt. ii, pp. 25K-84K. 1889. 

Cambro-Silurian. Canada. Includes L6vis, Lauzon, and Sillery formations. 
Quebec, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Silurian. Arkansas. Included in Silurian group. Part. syn. Knox group. 
Quebec group, Matthew. Can. Rec. Sci., vol. iv, pp. 339-343. 1891. 

Cambro-Silurian. New Brunswick. 
Quebec terrane, Ami. Geol. Soc. Am., Bull., vol. ii, pp. 491, 495. 1891. 

Cambrian (?). Quebec. Included in Quebec. 
Quebec group, Ami. Ottawa Field Nat. Club., Trans., 1892-93, vol. viii, pp. 41-43. 
1892. 
Cambro-Silurian. Canada. Included in Lower Ordovician. 



342 NORTH AHKRICAN OEOLOOIC FORMATION NAUEB. [euli.,191. 

Quelwo Gnmp, T»w. Can. <;«)!, Riirv., ih'w Hcr., vol, v, pt. i, \>p. 2ttl^%'il,. 1893. 

('.ambro-i^iliirian. (^aiiaila. Ini-hirleH L^vi^ and Sillery (livitiions. 
Qiielipc Knmpi Itailey aiul M<;Innei<. Uan. Geol. Surv.,new ser., voi, v, pt. i, pp. 5M- 
«M, 1;JM-28M". ISW). 
Camhro-Kilurian. Eastern Canada and partw <if New Brunswick ami Maine. 
Indiides I/vis and Sillery divisions. I'art. ayns. 8ill(!ry=iU|)|ier Camiiriaii, 
I,fvii'=<'anihro-Silurian. 
QuelMT group, WeHtr.n. Ottawa Field Nat. Club., Trans., vnl. x, 1894-95, pp. 
81-S2. 1894. 
Cam bro- Silurian. Canada. 
Queteo group, Klls. Can. (ieol. Surv., iiewaer., vol. \-ii, pp. 15J-64J. 1896. 
Camhro-Silurian. Provin<e of Queljec, Canada. Incluilfa Siilery, Lf-viaand I^ower 
Phillipsbiii^, Upper Piiilliptiburf;, Bedford and Mystic slates, and Parnham 
slates and limei'tonen. 
Quebec group, I>awHon, tkn. Roy. Soc., Trans., new aer., vol. il, see. iv, pp. 91-129. 
1896. 
Cauibro-I^ilurian. Canada. Ineludes Cillery i^ries, L^vis series and Marsciuin 

Quelx'c group, Mareoti. Am. (ieol., vol. xix, pp. Ul-llH. 1897. 

Cambro-Silurian. 
Queen Charlottes Island formation. Dawson. Am. Jour. Sei., 8<1 eer., vol. 
xKxviii, pp. 120-127. IHSH. 
CretaceouH. British Columbia. 
Queen Chariotte, Rtanton. Oeol. Soc. Am,, Bull., vol, iv, p. 24.'5. 1893. 

Cretai'eous. Britii'h Columbia. Exact syn. Shasta. 
Queen Charlotte labinda gnmp, Diller and WtanUin. Geol. Soo. Am., Bull., vol. v, 
|). 481. 1894. 
Cretaceouc, British Columbia. Part, syn, Sliasta-Chieo. 
Queen Charlolte Island f<irmation, Dawson. Can, tieol. Surv., new aer., vol. vii, 
p. 26B, ft4B-65B. 18%. 
Cretaceous. Britisli Columbia. Included in I-ower Crefaceoos. Rirt, syna. 
Jacka-'H Mountain gr'iup and Khtunta proiip of California. 
aaaen City beds, Ktnnwly. Phil, Aca.1. Nat, S<d„ Proc., p, 135. 1895. 

Lower Eocene. Texas. Included in l.ignitic. 
Queens Kiver moraine, Wooilworth and Marbnt. Jour, of fieol,, vol. iv, pp, 
6i)l-70;5. 189ft, 
Pleistocene. Khoile Island, 
Queanel Lake cryatalline wtrii's. Bowman. Can. Geol. Surv., new ser., vol. iii, pt. i. 



wmau. Can. (ieol. Surv., new ser., vol. iii, pt. i, pp. 17C- 

Dlumbia. Part ayn, Shasta {rroup of California, upper part, 
L. Am, Phil. Soc", Pro<>., vol. six, pp. 229, 498. 18K1, 
lia. Exact syns. Serai, Pottsville, 
MiPon. The Virginias, vol. ii, pp. 2,5, 186, 1881. 
lia. Exact syna. Serai (Pottsville), conglomerate, 
hnriwin, White, (ieol. Boe. Am., Bull,, vol. vi, p, 310, 

West Virginia, Included in Pottsville formation. 
U. S. Geol, Surv., Geol. Atlaa of U. S., Folio No, 26. 

lia. West Virginia, Included in Coal- bearing strata, Potls- 



WEEKS] QUEBEC RANOOCAS. 343 

Quinnemont formation, White. U. S. Geol. 8urv., 20th Ann. Rept., pt. ii, p. 815. 
1900. 
Carboniferous. Virj?inia and West Virjjinia. 
duinneBec schists, Van Hise and Bayley. U. S. (ieol. Surv., (ieol. Atlas of IT. S., 
Folio No. 62. 1900. 
Archean. Michigan, 
amtman bed, Taff. Texas Geol. Surv., 2d Ann. Rept., pp. 728-730. 1891. 

Cretaceous. Texa.*'. Included in Washita division. 
Quitman limestone, Gallaher. Mo. Geol. Surv., Bien. Rept., p. 54. 1898. 

Upper Carboniferous. Missouri. Include<l in Upper Coal Measures. 
Quitman-Muerto series. Hill. Geol. Soc. Am., Bull., vol. iii, p. 97. 1892. 

Tertiary. Texas, New Mexico. 
Raccoon shales. Hicks. Am. Jour. Sci., 3d ser., vol. xvi, pp. 216-219. 1878. 

Carboniferous. Ohio. Included in Waverly group. 
Racine limestone, Hall. Regents Univ. of N. Y., 20th Ann. Rept., pp, 305-308. 
1867. 
Silurian. Wisconsin. Included in Niagara. P^xact syns. Guelph, l^claire (la.) 
limestone. 
Racine beds. Geol. of Wis., vol. ii, pp. 360-377. 1877. 

Upper Silurian. Wisconsin. Included in Niagara. 
Racine beds, Chamberlin. Geol. of Wis., vol. i, p. 187. 1883. 

Silurian. Wisconsin. Included in Niagara. 
Radiolarian chert, Ransonie. Univ. of Cal., Dept. of Geol., Bull., vol. i, pp. 193-240. 
1894. 
California. 
Radiolarian chertf», Lawson. U. S. Geol. Surv., 15th Ann. Rept., p. 420. 1895. 

Mesozoic. California. Included in Franciscan series. 
Radiolarian chert, Ashley. Cal. Acad, of Sci., Proc, 1895, 2d ser., vol. v, p. 293. 
1896. 
Cretaceous or Jura.*«sic. California. 
Rainy Mountain limestone, Bain. (ieol. Soc. Am., Bull., vol. xi, pp. 135, 138-140. 

1900. Silurian. Oklahoma. Included in Ordovician. 
Raleigrh sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 
1896. 
Carboniferous. Virginia and West Virginia. Included in Coal-bearing strata, 
Pottsville series. 
Raleigh sandstone, Campbell and Mendenhall. U. S. Geol. Surv., 17th Ann. Rept, 
pt. ii, p. 493. 1896. 
Carboniferous. West Virginia. Included in No. xii of Rogers, Conglomerate 
series of Fontaine. 
Raleigh sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of V. S., Folio No. 44. 
1897. 
Carboniferous. Virginia and West Virginia. Part. syns. No. xii, Great Conglom- 
erate of Rogers. 
Rampart series, Spurr. U. S. Geol. Surv., 18th Ann. Rept., pt. iii, pp. 155-169. 
1898. 
Alaska. 
Rampart series, Emmons. Nat. (leog. Mag., vol. ix, p. 157. 1898. 

Alaska. 
Rancocas, Clark.' N. J. Geol. Surv., Rept., 1893, pp. 337-338. 1894. 

Cretaceous. New Jersey. Exact syn. Middle marl l)ed. 
Rancocas formation, Clark. Jour, of Geol., vol. ii, p. 166. 1894. 

Cretaceous. New Jersey. Exact syn. Middle marl bed. 
Rancocas formation, Clark. Geol. Soc. Am., Bull., vol. vi, pp. 479,480. 1895. 
Cretaceous. New Jersey. Includes Middle marl bed. 



344 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [buj-lKI- 

Kanc-ucan formation, Shattiick, Johns Hopkins Univ. Circe., vol. iv, p. 15. 1895. 

Cretaceous. New Jersey. Exact syn. Middle marl l)ed. 
Rancocas, Darton. U. S. (ieol. Hurv., Bull. No. 1S8, p. 41. 18%. 

Cretaceous. New Jen«y. Exact syn. Middle marl. 
Rancocas formation, Clark. Md. Ueol. Surv., vol. i, pp. 156, 1S4-195. 1897. 

Cretaceous. Maryland, 
itancoras 'formation, Clark, Ilagt» and Shatturk. Geol. ^oc. Am., Bull., vol. viii, 
pp. 315, .t;J6. 1897. 
Cretaceous. New Jersey. Included in Upper Cretaceous. Includes Sewell marls 
and Vincentowii lime sands. 
Rancocas fonnation, Clark, Ba^ and Shattuck. N. J. (ieol. Surv., Kept. 1S97, 
pp. 18fi-190. 1898. 
Cretaceous. New Jersey. Included in Upper Cretaceous. Includes Sewell marls 
and Vincentown lime sands. 
Baitdom terrane, Walcotl. Geol. Soc. Am., Bull., vol. xi, pp. 3-5. 1900. 

Algonkian. Newl'onndland. 
Randville dolomite. Van Hise. U. S. Geol. Surv., IHtli Ann. Kept., pt. iii, p. 16. 
1899. 
Algonkian. Michigan. Included in I<ower Huronian. 
Randville dolomite, Clements. U. S. Geol. Surv., Mon., vol. xxxvi, pp.50-53. 18H9. 

Lower Hunmian. Michigan, 
Randville dolomite, Smyth. U. S. Geol. Surv., Mon., vol. xxxvi, pp. 406-410, 431- 
434. 1899. 
Michigan. 
Randville dolomite, Clements and Smyth. U. 8. Geol, Surv., 19th Ann. Bept,, pi, iii, 
pp. 34-36, no, 126. 1899. 
AljEonkian, Michij^n. Included in Lower Huronian series. 
Randville dolomite, Van Hi»e and Bayley. U. S. Geol. Surv,, Geol. Alias of U. S., 
Folio No, 62. 1900. 
Algonkian. Michigan. Included in Ijower Menominee series, 
Sapida schist, Sehrader. U, S. Geol. Surv., 21st Ann. Kept., pt. ii, p. 473. 1900. 

A laska. 
Bappahanaock aeries. Ward. U. S. <;eol. Surv., 15th Ann. Rept., p. 321. 1895. 

Cretaceous. Virginia and Maryland, Included in Potomac. 
Baritan clay, Conraii. Am. Jour. Sci., 2d ser., vol, xlvii, p. 360, 1869. 

Cretaceous. New Jersey. Part. ayn. Post Wealden. 
Raritan, Uhler. Md. Acad. Sci., Trans., vol. i, p. 206. 1892. 
Cretaceous, Includes Upper member of Albirupean. Kxact syn. Alternate clay 

ark. Ji. J. Slate Geol., Repl., 1892, pp. 181-186. 1893. 

. Geol. Surv., Rept,, 1893, p. 335, 1894, 

iersey. Kxact syn. Plastic clay. 

ark. Geol, Soc. Am,, Bull., vol. vi, pp. 479-480. 1895. 

lersey. Include*! in Potomac. 

lattuck. Johns Hopkins Univ. Circs., vol. xv, p. 14. 1895. 

Jersey. Included in Greensand series. Exact syn. Plastic 

S. Geol. Surv., Bull. No. 138, p. 40. 1896. 

ark. Md, Geol, Surv., vol, i. pp. 156, 192. 1897. 

ark anil Bibbins. Jour, of Geol., vol. v, pp. 492-494. 1897. 
and. Included in Potomac group. 



WEEKS] RANC0CA8 — RED RIVER. 345 

Reading sandstone, Walcott. Am. Jour. Sci., 3d ser., vol. xlvii, pp. 38-40. 1894. 
Cambrian. Pennsylvania. Included in Ix)wer Cambrian. Exact syns. South 
Mountain and Chickis quartzites. 
Receptaculites limestone, Shumard. St. I^uis Acad. Sci., Trans., vol. i, p. 410. 
1857. 
Lower Silurian. Missouri, 
lieceptaculite limestone, Shumard. Mo. (ieol. Surv., Rept., 1855-1871, pp. 265, 
282, 297. 1873. 
Silurian. Missouri. Included in Hudson River group. 
Receptaculite limestone, Broad head. Mo. Geol. Surv., Rept., 1873-74, p. 28. 1874. 

Silurian. Missouri. Included in Lower Silurian. Part. syn. Galena group. 
Receptacxilite limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Silurian. Missouri. Included in Trenton. 
Bed beds, Marvine. U. S. Geol. and Geog. Surv. of Terr., 1873, p. 96. 1874. 

Colorado. Included in Trias. 
Red beds. King. U. S. Geol. Expl. of 40th Parallel, vol. i, p. 544. 1878. 

Colorado, Utah. Included in Trias. Includes Star Peak, Koipato. 
Red beds, Endlich. U. S. Geol. and Geog. Surv. of Terr., 10th Ann. Rept., pp. 72, 
128. 1878. 
Colorado. 
Red l)eds, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., p. 623. 
1879. 
Idaho, Wyoming. Included in Jurassic. Exact syn. Star Peak group. 
Red beds, Newton. Geol. of Black Hills, pp. 131-151. 1880. 

South Dakota. Included in Trias. 
Bed Bluff beds, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 40-44. 1896. 

Permian. Kansas. Included in Cimarron series. 
Red bluff formation, Cragin. Am. Geol., vol. xix, pp. 360-361. 1897. 

Permian. Kansas, Oklahoma. Included in Kiger division of Cimarron series. 
Bed Creek quartzite, Powell. U. S. Geog. and Geol. Surv. of Uinta Mts., pp. 42, 62, 
137. 1876. 
Paleozoic. Utah. 
Bed Mountain group, Tuomey. Ala. Geol. Surv., 1st Bien. Rept., p. 10. 1850. 

Silurian. Alabama. 
Red Mountain series, Spencer. Ga. Geol. Surv., The Paleozoic (iroup, pp. 48, 94, 113, 
117, 121, 124, 132, 142, 177. 1893. 
Silurian. Georgia. Included in Upper Silurian. Includes Medina, Clinton, and 
Lower Niagara. Exact syns. Clinch Mountain, White Oak Mountain, Dye- 
stone, and Rock wood. 
Red Mountain, McCalley. Ala. Geol. Surv., Rept. on Valley regions of Ala., j)t. i, 
pp. 27, 30. 1896. 
Silurian. Alabama. Included in Niagara. Exact syn. Clinton. 
Red Mountain formation, McCalley. Ala. Geol. Surv., Rept. on V'^alley regions, 
pt. ii, pp. 48-50, 119-167, 202-237, 272-291, 342-442, 466-475, 500-503, 642-643, 
729-735, 796-809. 1897. 
Silurian. Alabama. Included in Upper Silurian. Exact syns. Clinton and Rock- 
wood. 
Bed Biver group, Shumard. St. Louis Acad. Sci., Trans., vol. i, p. 589. 1857. 

Cretaceous. Texas. 
Red River group, Marcou. Boston Soc. Nat. Hist., Proc, vol. viu, 1861-62, \>. H9. 
1861. 
Cretaceous. Texas. Included in l^wer Cretaceous (Middle Cretaceous) according 
to Marcou. 



346 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Red River j^roiip, Shumanl. St. I^iiin Acad. Soi., Trans., vol. ii, 1868, p. 140. 1868. 

Cretaceous. Texas. 
Red River loess, Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 29-32. 1888. 

Post-Tertiary. Arkansas, Texas, and Indian Territory. 
Red River division, Taff. Texas (ieol. Surv., 3d Ann. Rept., p. 349.* 1892. 

Cretaceous. Texas. Included in Upper Creta(;eou8. Exact syn. Lower Cross 
Timl)er division. 
Red sandrock series, Hiti'hcock. Geol. of Vt., vol. i, pp. 326-342. 1861. 

Silurian. Vermont. Includes (iray sandstone, Red sandrock, Medina sandstone, 
Quebec group. 
Red Sand, C(K)k. (ieol. of N. J., pp. 243, 267-269. 1868. 
Red sandstone, Cook. N. J. State (ieol., Rept. 1879, pp. 18-36. 1879. 

Juratrias. New Jersey. 
Red sandstone. Cook. N. J. State Geol., Rept. 1888, pp. 11-15. 1889. 

Juratrias. New Jersey. 
Red sandstone, Nason. N. J. State (leol., Rept. 1888, pp. 16-44. 1889. 

Juratrias. New Jersey. 
Red sandstone, Nason. N. J. State (tcoI., Rept. 1889, pp. 66-72. 1889. 

Juratrias. New Jersey. 
Red shale beds, White. U. S. Geol. Surv., Bull. No. 65, p. 92. 1891. 

Carl)oniferous. Ohio, Pennsylvania, and West Virginia. Included in Barren 
Measures, Elk River series. 
Red sandrock, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 96, 250, 277. 1891. 

Cambrian. Aj)palachian region. 
Red Sand formation, ClarK. N. J. State dleol., Ann. Rept., 1892, pp. 199-201. 1893. 

Cretaceous. New Jersev. 
Bed Wall, Gilbert. U. S. Geog. and Geol. Surv., W. of 100th M., vol. iii, p. 178. 
1875. 

Carboniferous. Utah. 
Red Wall, Powell. U. S. Geog. and Geol. Surv., Geol. of Uinta Mountains, pp. 41 j 
56, 57-60, 147. 1876. 

Carboniferous. Utah. 
Red Wall group, Button. U. S. Geol. Surv., 6th Ann. Rept., p. 132. 1885. 

Carboniferous. Northwest New Mexico. Included in Lower Carboniferous. 
Red Wall limestone, Walcott. Geol. Soc. Am. Bull., vol. i, p. 50. 1889. 

Lower Carboniferous. Arizona. Included in Carboniferous. 
Bedbank, Clark. N. J. Geol. Surv., Rept., 1893, p. 337. 1894. 

Cretaceous. New Jersey. Exact syn. Red sand. 
Redbank formation, Clark. Jour, of (leol., vol. ii, pp. 165-166. 1894. 

Cretaceous. New Jersey. Exact syn. Red sand. 
Redbank formation, Clark, (leol. Soc. Am., Bull., vol. vi, p. 479. 1895. 

Cretaceous. New Jersey. 
Redbank formation, Shattuck. Johns Hopkins Univ. Circs., vol. xv, p. 15. 1895. 

Cretaceous. New Jersey. Exact syn. Red sand. 
Redbank, Darton. U. S. Geol. Surv., Bull. No. 138, p. 41. 1896. 

Cretaceous. New Jersey. p]xact syn. Red sand. 
Redbank sands, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, pp* 
315, 334. 1897. 

Cretaceous. New Jersey. Included in Monmouth formation. 
Redbank sands, Clark, Bagg and Shattuck. N. J. Geol. Surv., Rept., 1897, pp. 184- 
185. 1898. 

Cretaceous. New Jepeey. Included in Monmouth formation, 
"^drock sandstone, Keyes. Am. Jour. Sci., 3d ser., vol. xli, pp. 273-276. 1891. 

Carboniferous. Iowa. 



i 



WEEKS.] RED KIVER — EICHMONDVILLE. 347 

Bedstone limestone, Piatt. 2(1 Pa. Geol. Surv., Rept. IP, p. 62. 1877. 

Carboniferous. Pennsylvania. 
Redstone limestone, White. U. S. (Jeol. Surv., Bull. No. 65, p. 62. 1891. 

Carboniferous. Pennsylvania and West Virginia. Included in Upper Coal 
Measures, Monongahela River series. 
Redstone limestone, White. Geol. Soc. Am., Bull., vol. iii, p. 189. 1892. 

Upper Carboniferous. West Virginia. Inelu<led in Upper Coal Measures. 
Reeder sandstone, Gould. Am. Jour. Sci., 4th ser., vol. v, pp. 170-174. 1898. 

Cretaceous. Kansas. Included in Medicine beds. 
Relief formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 66. 
1900. 

Carboniferous. California. Included in Calaveras formation. 
Rensselaer grit. Dale. U. S. Geol. Surv., 13th Ann. Rept., pt. ii, p. 306. 1893. 

Silurian. New York and Vermont. 
Republic formation, Wadsworth. Mich. Geol. Surv., Rept. State Board for 1891, 
1892, pp. 63, 65, 66, 84, 102. 1893. 

Azoic or Archean. Michigan. Exact syn. Lower Marquette series. Part. syn. 
Keewatin hematites and jaspilites of Michigan. 
Republic series. Van Hise. Geol. Soc. Am., Bull., vol. v, p. 6. 1893. 

Archean. Michigan. Included in Marquette. 
Reqnienia limestone. Hill. Wash. Biol. Soc, vol. viii, p. 15. 1893. 

Cretaceous. Texas. Included in Trinity division. Glen Rose beds. 
Reynosa limestone, Penrose. Texas Geol. Surv., 1st Ann. Rept., p. 63. 1890. 

Tertiary. Mexico. 
Reynosa, Dumble. Geol. Soc. Am., Bull., vol. iii, p. 219. 1892. 

Neocene. Texas. Part. syn. Lafayette (?). 
Reynosa division, Dumble. Jour, of Geol., vol. ii, pp. 560-563. 1894. 

Tertiary. Texas. Included in Pliocene. 
Reynosa conglomerate, Dumble. Geol. Soc. Am., Bull., vol. vi, p. 377. 1895. 

Post-Cretaceous. Texas. 
Reynosa limestone, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt ii, p. 337. 1898. 

Tertiary. Texas. Included in Pliocene. 
RhombOidal limestone, Broadhead. Mo. Geol. Surv., Rept. 1873-74, p. 214. 1874. 

Carboniferous. Missouri. Included in Coal Measures. 
Riceville shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, p. 1777. 1895. 

Carboniferous. Pennsylvania. Included in No. 10, Pocono. 
Richland sandstone, Tarr. Am. Geol., vol. vi. p. 149. 1890. 

Carboniferous. Texas. Included in Upper Carboniferous. 
Richland-Gordon sandstones, Dumble. Texas Geol. Surv., 1st Ann. Rept., pi. iii, 
p.'lxv. 1890. 

Cretaceous. Texas. Included in Coal Measures. 
Richmond shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 46. 
1898. 

Silurian. Kentucky. 
Richmond l)eds, Clarke and Schuchert. Science, new ser., vol. x, p. 876. 1899. 

Ordovician. Ohio, Indiana. Included in Cincinnatian. 
Richmond, Hill. Harvard Coll. Mus. Comp. Zool., Bull., vol. xxxiv, 1899, pp. 53-56. 
1899. 

Tertiary, Eocene. Jamaica. Included in Bluo Mountain series. 
Richmondville sandstone. Lane. Mich. Geol. Surv., Rept. State Board for 1891, 
1892, p. 66. 1893. 

Subcarboniferous. Michigan. 
Richmondville sandstone. Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 20. 1895. 

Michigan. Exact syn. The Berea grit of northern Ohio. 



348 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Bicker bed, Drake. Texas (ieol. Surv., 4th Ann. Rept., p. 386. 1893. 

Carboniferous. Texas. Included in Strawn division. 
Rico formation, Cross and Spencer. U. S. Geol. Surv., 2l8t Ann. Rept., pt. ii, p. 69. 
1900. 

Carboniferous. Colorado. 
Ridley limestone, Safford. (ieol. of Tenn., by Safford, pp. 261-262. 1869. 

Silurian. Tennessee. Included in Trenton or Lebanon. 
Riga schist, Hobbs. Jour, of Geol., vol. i, pp. 726-727. 1893. 

Silurian. Massachunetts. Included in Mount Washington series, Ordovician. 
Riley series, Dumble. Texa.^ (ieol. Surv., 1st Ann. Rept., pi. iii. p. Ixi. 1890. 

Cambrian. Texai^. 
Riley series, Comstock. Texas Geol. Surv., 1st Ann. Rept., pp. 286-289. 1890. 

Cambrian. Texas. Included in Middle Cambrian(?). 
Riley series, Comstock. Texas (ieol. Surv., 2d Ann. Rept., p. 564. 1891. 

Cambrian. Texas. Included in Middle Cambrian. 
Riley, Walcott. U. S. Geol. Surv., Bull. No. 81, p. 246. 1891. 

Cambrian. Texas. 
Ripley group, Hilgard. Rept. on Geol. and Agric. of Miss., pp. 62, 83-95. 1860. 

Cretaceous. Mississippi. 
Ripley group, Gabb. Phil. Acad. Nat. Sci., Proc., vol. xiii, p. 124. 1862. 

Cretaceous. New Jersey. 
Ripley group, Safford. Am. Jour. Sci., 2d ser., vol. xxxvii, pp. 366-368. 1864. 

Cretaceous. Tennessee. 
Ripley group, Shumard. St. Louis Acad. Sci., Trans., vol. ii, p. 152. 1868. 

Cretaceous. Alabama. ' 
Ripley group, Safford. Geol. of Tenn., pp. 417-421. 1869. 

Cretaceous. Tennessee. 
Ripley group, Hilgard. Am. Jour. Sci., 3d ser., vol. ii, pp. 391-394. 1871. 

Cretaceous. Mississippi, Alabama, Georgia, Texas, and Arkansas. Exact syns. 
Fox Hill beds, highest Cretaceous in New Jersey. 
Ripley group, Killebrew and Safford. Res. of Tenn., p. 44. 1874. 

Cretaceous. Tennessee. 
Ripley formation. Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 71. 1887. 

Cretaceous. Alabama. 
Ripley, Loughridge. Ky. Geol. Surv., Jackson Purchase region, pp. 32-36. 1888. 

Cretaceous. Kentucky. 
Ripley series, Spencer. Ga. Geol. Surv., 1st Rept. of Prog., p. 34. 1891. 

Cretaceous. Georgia. 
Ripley series, Langdon. Ga. Geol. Surv., 1st Rept. of Prog., p. 92. 1891. 

Tertiary. Georgia. 
Ripley, Langdon. Geol. Soc. Am., Bull., vol. ii, pp. 588, 592. 1891. 

Cretaceous. Alabama. 
Ripley, Smith. Ala. Geol. Surv., Bull. No. 2, p. 15. 1892. 

Cretaceous. Alabama. 
Ripley, Smith, Johnson and Langdon. Ala. Geol. Surv., Geol. of Coastal Plain of 
Ala., pp. 257, 359, 423. 1894. 

Cretaceous. Alabama. 
Ripley stage, Harris and Veatch. La. State Exp. Sta., pt. v, pp. 52-62. 1899. 

Cretaceous. Louisiana. 
Riversdale formation, Ami. Can. Rec. Sci., vol. viii, pp. 154-160. 1900. 

Carboniferous. Canada. Included in Eocarboniferous. 
f^rsdale formation, Ami. N. S. Inst. Sci., Proc. and Tmns., vol. x, pt. 2, pp. 162- 
178. 1900. 



k 



WEEKS.] KICKER — ROCKFORD. 349 

Biverside sandstone, Hopkins. Indiana Dept. Geol. and Nat. Res., 20th Ann. Rept. 
(1895), pp. 196, 317. 1896. 

Carboniferous. Indiana. 
Riverside sandstone, Kindle. Am. Pal., Bull. No. 12, p. 6. 1899. 

Devonian. Indiana. Included in Knobstones. 
Robinett flags, Haworth and Kirk. Kan. Univ. Quart., vol. ii, p. 108. 1894. 

Carboniferous^ Kansas. 
Bobinson beds, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Carboniferous. California. 
Robinson formation. Turner. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 447. 1894. 

Carboniferous. California. 
Robinson, Diller. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 15. 1895. 

Carboniferous. California. 
Robinson formation. Turner. U. S. Geol. Surv., 17th Ann. Rept., pt. i, o. 626. 1896. 

Juratrias. California. 
Robinson formation. Turner. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 37. 
1897. 

Carboniferous, or older. California. Included in Bed Rock series. 
Robinson quartzite. Tower and Smith. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, 
pp. 620-622. 1899. 

Cambrian. Utah. 
Robinson limestone, Beede. Kan. Acad. Sci., Trans., vol. xvi, p. 83. 1899. 

Carboniferous. Kansas. Exact syn. Burlingame limestone. 
Boclidale group, Dwight. Vassar Bros. Inst., Trans., vol. iv, p. 213. 1887. 

Silurian. New York. Exact syn. Calciferous(?) 
Rochdale group, Dwight. Am. Jour. Sci., 3d ser., vol. xxxiv, p. 32. 1887. 

Silurian. New York. 
Boche Perc^e group, Dawson. Can. Geol. Surv., Rept, 1879-80, p. 12A-55A. 1879. 

Tertiary. Canada. Included in Lignite Tertiary. Exact syn. Fort Union group 
of Missouri. 
Boclielle conglomerate, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 388. 1893. 

Carboniferous. Texas. Included in Canyon division. 
Bock Creek limestone, Worthen. Econ. Geol. of 111., vol. iii, p. 325. 1882. 

Carboniferous. Illinois. Included in Coal Measures. 
Bock Falls series. Lane. Mich. Geol. Surv., vol. vii, pt. ii, p. 253. 1900. 

Carboniferous. Michigan. Exact syn. Cuyahoga. 
Bockcastle group, Crandall. Ky. Geol. Surv. (Proctor), Geol. of Whitley Co. 

Carboniferous. . Kentucky. Exact syns. Conglomerate, Pine Mountain group(?) 
Rockcastle conglomerate lentil, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., 
Folio Nos. 46, 47. 1898. 

Carboniferous. Kentucky. Included in Pennsylvanian series. 
Rockcastle conglomerate lentil, Campbell. U. S. Geol. Surv., Geol. Atlas of IJ. S., 
Folio No. 53. 1899. 

Carboniferous. Tennessee. Included in Pennsylvanian series. Exact syn. 
Walden sandstone. 
Bockford shales, Webster. Davenport (Iowa) Acad. Sci., Proc, vol. v, pp. 100-109. 
1889. 

Devonian. Iowa. 
Rockford goniatite limestone, Hopkins and Siebenthal. Indiana Dept. Geol. and 
Nat. Res., 21st Ann. Rept., 1896, p. 296. 1897. 

Carboniferous. Indiana. 
Rockford limestone. Kindle. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 
1897, p. 408. 1898. 

Carboniferous. Indiana. 



350 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.19L 

Rockford goniatite limestone, Blatcrhley anci Ashley. Indiana Dept. Geol. and Nat 
Res., 22d Ann. Rept., 1897, p. 16. 1898. 
Carl)oniferous. Indiana. 
Rockford goniatite limeHtone, Ashley. Indiana Dept. Geol. and Nat. Res., 23d Ann. 
Re[)t., 1898, pp. 74, 79. 1899. 
CarlK)niferou8. Indiana. 
Rockford limestone, Kindle. Am. Pal., Bull. No. 12, p. 7. 1899. 

Devonian. Indiana. 
Bockingliam mica schist, Hit^^hcock. Am. Mus. Nat. Hist., Bull., vol. i, 1881-86, 
p. 179. 1884. 
Vermont and New Hampshire. 
Rockingham mica schist, Hitchcock. Jour, of Geol., vol. iv, p. 54. 1896. . 

Algonkian or Cambrian. New Hampshire. Included in Montalban. 
Bockxnart slate, Hayes. (Teol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Silurian. Tennessee. Included in Trenton. 
Rockmart slate, Spencer. Ga. Geol. Surv., The Paleozoic Group. 1893. 

Ordovician. Georgia. Included in Chickamauga. 
Rockmart slate, Hayes. Geol. Soc. Am., Bull., vol. v, p. 469. 1894. 

Silurian. Georgia and Alabama. 
Rockville conglomerate, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 304. 
1891. 
Cretaceous. Iowa. Exact syns. Nishnabotany sandstone. Fort Dodge gypsum. 
Rockville conglomerate, Calvin. Iowa Geol. Surv., vol. viii, pp. 160-162. 1898. 

Cretaceous(?) Iowa. 
Rockwood formation, Hayes. Geol. Soc. Am., Bull., vol. ii, p. 143. 1890. 

Silurian. Tennesst^e. Exact syri. Clinton = Dyestone. 
Rockwood, Hayes. Ala. Geol. Surv., Bull. No. 4, p. 43. 1892. 
Silurian. Alabama. Includes Dyestone, White Oak, Clinch Mountain, Clinton, 
and Red Mountain. 
Rockwood formation, Hayes. Geol. Soc. Am., Bull., vol. v, p. 470. 1894. 

Silurian. Georgia and Alabama. 
Rockwood sandstone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 
Silurian. Kentucky, Virginia and Tennessee. 
Rockwood, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 176. 1894. 

Silurian. Virginia. Included in Clinton. 
Rockwood formation, Campbell. V. S. Geol. Surv., Geol. Atlas of U. S., Folios 

Nos. 12, 26. 1894, 1896. 
• Silurian. Kentucky, Virginia and Tennessee. 

Rockwood, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 14, 32. 1894, 
1896. 
Silurian. Virginia and West Virginia. Exact syns. Clinton, Rogers No. v; and 
Surgent. 
Rockwood formation, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 2, 
4, 6, 8, 19, 20, 21, 35. 1894, 1895, 1896. 
Silurian. Georgia, Tennessee, Alalmma. 
Rockwood, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 25, 27, 33. 
1896. 
Silurian. Tennessee. 
Rockwood, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 28. 
1896. 
Silurian. West Virginia and Maryland. 



WEEKS.] ROCKFORD ROMNEY. 351 

Rockwood formation, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 35. 
1896. 
Silurian. Alabama. Exact syns. Clinton or Red Mountain group, Dyestone group, 
and White Oak Mountain sandstone. 
Rockwood formation, Campbell. U. S. CJeol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Silurian. Virginia, West Vii^inia. 
Rockwood formation, Clark. Md. Geol. Surv., vol. i, pp. 181-182. 1897. 

Silurian. Maryland. Exact syn. Clinton shales. 
Rockwood formation, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 61. 
1899. 
Silurian. Virginia and West Virginia. 
Rockwood formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U.S., Folio No. 5Q. 
1899. 
Silurian. Virginia, Tennessee. 
Bocky Comfort chalk. Hill. Ark. Geol. Surv., 1888, vol. ii, pp. 89-95. 1888. 

Cretaceous. Arkansas. Included in Chalky marl beds. 
Rogrersville shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 
Cambrian. Kentucky, Virginia, and Tennessee. 
Rogersville shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25, 27. 
1895, 1896. 
Cambrian. Tennessee and North Carolina. 
Rogersville shale, Campbell. U. S. Geol. Surv. , Geol. Atlas of U. S. , Folio No. 59. 1899. 

Cambrian. Virginia and Tennessee. 
Rome sandstone, Hayes. Geol. Soc. Am., Bull., vol. ii, p.. 143. 1890. 

Cambrian (?). Tennessee. Part. syn. Chilhowee(?). 
Rome sandstone, Walcott. U. S. Geol. Surv., Bull. No. 81, p. 247. 1891. 

Cambrian. Tennessee. Exact syn. Knox. 
Rome sandstone, Hayes. Ala. Geol. Surv., Bull. No. 4, pp. 34, 37. 1892. 

Cambrian. Alabama. Includes AVeisner quartzite. 
Rome sandstone, Hayes. Geol. Soc. Am., Bull., vol. v, p. 467. 1894. 

Cambrian. Georgia. 
Rome formation, Hayes. U. S. Geol. Surv., Geol. Atlas of U.1S., Folios Nos. 2, 4, 6, 20. 
1894-5. 
Cambrian. Georgia, Tennessee. 
Rome, Keith. U. S. Geol. Surv., Geol. Atlasof U. S., Folios Nos. 16, 25, 27. 1895, 1896. 

Cambrian. Tennessee, North Carolina. 
Rome formation, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 1896. 

Cambrian. Tennessee. Exact syn. Knox sandstone. 
Romney shale, Darton. Am. Geol., vol. x, p. 17. 1892. 

Devonian. Virginia. Part. syn. Hamilton. 
Romney shale, Darton. U. S. Geol. Surv., Geol. Atlas of U.S., Folios Nos. 14, 32. 
1894, 1896. 
Devonian. Virginia and West Virginia. Exai.-t syns. Hamilton, Rogers Cadent. 
Part. syn. Rogers, No. viii. 
Romney shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 

Devonian. Virginia and West Virginia. 
Romney shale, Darton and Taff. U. S. Geol. Surv., Geol. Atlas of U. S., FoUo No. 28. 
1896. 
Devonian. West Virginia and Maryland. 
Romneyshale, Campbell. U. S. Geol. Surv., Geol. Atlasof U. 8., FoUo No. 44. 1897. 
Devonian. Virginia and West Virginia. 



352 NORTH AMERICAN GEOLOGIC FORMATION NAMES. (bitll.wi. 

Romney (onnatioii, Oark. Md. Ueol. Surv., vol. 1, p. 183. 1897. 

Devonian. Maryland. Extn-t eyn. Hamilton eha]«fl. 
Romney slmle, Darton. L'. S. Gwl. Surv., Geol. Atlaa of U. S., Folio No. 61. 1899. 

Devonian. Vii^inia and West Vir^nia. 
Romney formation, O'Harra. Md. tieol. Snrv., Allegany Co., p. 103. 1900. 

Devonian, Maryland. 
Kondout walerlimt', Clarke ami Sclinchert. S<:ienee, new eer., vol. x, pp. 876-877. 
IStMt. 

Silurian. New York. Included in Cayugan. 
Rondout waterliiiie formation, Weller. N. J. fieol. Surv., Bept., 1899, p. 20. 1900. 

Silurian. New Jersey. 
Rondout v/aterlime, Grabau. Ueol. Sue. Am., Bull, vol. xi, pp. 349-350. 1900. 

Silurian. New York. Included in Upper Silurian. 
Boee iBlBJid arkose, Slialer, VVoodworth and Foerete. U. S. Geol. Surv., Mon., 
vol. Kxjtiii, p. 380. 1899. 

Carboniferous. Rhode Island. 
Boalyn sandstone, Ruesell. U. S. (ieol. Surv., 20tli Ann. Rept., p. ii, pp. 123-127. 
1900. 

Tertiary. Waaliinjiton. 
RoaSTille Hhales ami eaiidstone, lleede. Kan. Acad. Sci., Trans., vol. xv, p. 31. 
1898. 

Carboniferous. Kaiiuas. 
Botten limestone, Winchell. Am. Assoc. Adv. Sci., Proc., vol. x, p. 91. 1856. 

Cretaceous. Alabama. Included in Upper Cretaceous. 
Rotten limestone group, Hilgard. Kept on Geol. and Agric. ot Miss., pp. 62, 76-83. 
1860. 

Cretaceous. Mississippi. 
Rotten limestone, Hilgard. Am. Jour, Sci, 3d ser., vol. ii, pp. 391-394. 1871. 

Cretaceous. Georgia, Alabama, Miaiiseippi, Texas, and Arkansas- Exact syn. Ft. 
Pierre group. Part, syn, Niobrara division (7). 
Rotten limestune, Killebrew and Safford. Res. of Tenn., p. 43. 1874. 

Cretaceous. Tennessee. 
Rotten limestone. Smith and Johnson. U. S. Geol. Surv., Bull. No. 43, p. 83. 1887. 

Cretaceous. Alabania. 
Rotlen limestone series, Spencer, lia. Geol. Surv., Ist Rept. of Prt^., 1890-91, 
1891. 

CrelaccouH. Georgia. 
Rotten liincMtone, White. C. H. Gool. Surv., Bull. No. 82, p. 106. 1891. 

Cretaceous. Gulf region. 
Rotten limeMti>ne, Smith. .\la. Geol. Surv., Bull. No. 2, ]>. 14. 1892. 

Crelai«ou«. .\lalKima. Exact r-yu. t^halk. 
K«^)tti'n limestone, Smith, Johnson and Lanfplon. Ala. Geol. Surv., (Jeol. of Coastal 
Plain of Ala., pp. 15, 276, 3!W, 430, 4.55. 189+. 

Crc-laceous. Alabama. Exact syn. Chalk. 

Winslow. Mo. Geol. Surv., Kept., vol. ii, pp. vii, 114, 115. 

Includes First sandstone and .Second sandstone. 



. Mo. Geol. Surv., vol. iv, p. 30. 1894. 

Included in Calciferous stage. 
. Mo. Geol. Surv., vol. vi, p. 378. 1894. 



WEEKS] ROMNEY RUTLEDGE. 353 

Bougrh Creek bed, Drake. Texas Geol. Surv., 4th Ann. Kept., p. 383. 1893. 

Carboniferous. Texaf. Included in Strawn division. 
Bowe schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., Hawley sheet. 
1892. 
Silurian. Massachusetts. 
Rowe schists, Emerson. Geol. Soc. Am., Bull., vol. vii, p. 5. 1895. 
Cambrian (?) . Massachusetts. Part. syn. Stockbrid^e limestone. 
Rowe schist, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 76-78. 1898. 
- Silurian. Massachusetts. Included in Lower Silurian. 
Rowe schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U. S., FoUo No. 50. 1898. 

Silurian. Massachusetts. 
Boxbury conglomerate, Crosby. Rept. on Geol. Map of Mass., p. 41. 1876. 

Paleozoic. Massachusetts. Included in Carboniferous (?). 
Roxbury conglomerate. Burr and Burke. Boston Soc. Nat. Hist. , Proc. , vol. xxix, 
pp. 179-184. 1900. 
Carboniferous. Massachusetts. 
Boyal formation, Campbell and Mendenhall. U. S. Geol. Surv., 17th Ann. Rept., 
pt. ii, p. 490. 1896. 
Carboniferous. West Virginia. Included in No. xii of Rogers, Conglomerate series 
of Fontaine. 
Buby, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9. 1894. 

Cretaceous. Colorado. 
Ruby, Cross. U. S. Geol. Surv., Mon., vol. xxvii, p. 219. 1896. 

Cretaceous. Colorado. 
Bushville group, Andrews. Am. Jour. Sci., 3d ser., vol. xviii, p. 137. 1879. 

Carboniferous. Ohio. 
Bussell, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 12, 26. 1894, 
1896. 
Cambrian. Kentucky, Virginia, Tennessee. 
Russell formation, Cragin. Colo. Coll. Stud., vol. vi, p. 49. 1896. 
Cretaceous. Kansas. Included in Benton. Includes Downs limestone or Feni^e- 
post limestone and Lincoln marble. 
Russell formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 44. 
1897. 
Cambrian. Virginia and West Virginia. 
Russell serpentines, Emerson. U. S. Geol. Surv., Mon., vol. xxix, p. 90. 1898. 

Silurian. Massachusetts. Included in Chester amphibolites. 
Russell group, Adams. Kan. Univ. Geol. Surv., vol. iv, pp. 25-26. 1898. 

Upper Cretaceous. Kansas. Included in Benton. 
Russell formation, Campbell. U. S. (leol. Surv., Geol. Atlas of U. S., Folio. No. 59. 
1899. 
Cambrian. Virginia and Tennessee. 
Bussellville shale, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Included in Appleton shale. 
Butledg^e limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 12. 
1894. 
Cambrian. Kentucky, Virginia and Tennessee. 
Rutledge limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 
25, 27. 1895, 1896. 
Cambrian. Tennessee and North Carolina. 
Rutledge limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 
1899. 
Cambrian. Virginia and Tennessee. 

Bull. 191—02 23 



354 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Sabine river beds, Penrose. Texas Geol. Surv., 1st Ann. Kept., pp. 22-47. 1890. 

Tertiary. Texas. Exact syn. Timber belt beds. 
Sabine river beds, Durable. Texas Geol. Surv., 2d Ann. Kept., pp. 25-57. 1891. 

Tertiary. Texas. Included in Eocene. Exact syn. Timber belt beds. 
Sac limestone, Shepard. Mo. Geol. Surv., vol. xii, pp. 49, 74-77. 1898. 

Devonian. Missouri. Included in Hamilton stage. 
Saccharoidal sandstone, Shumard. Mo. Geol. Surv., 1st and 2d Ann. Repts, pt. ii, 
p. 160. 1855. 
Silurian. Missouri. Included in Lower Silurian. 
Saccharoidal sandstone. Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., pp. 117, 
197. 1855. 
Silurian. Missouri. Included in Lower Silurian. 
Saccharoidal sandstone. Meek. Mo. Geol. Surv., 1st and 2d Ann. Repts., pt. ii, 
p. 105. 1855. ' 

Silurian. Missouri. Included in Lower Silurian. 
Saccharoid sandstone, Shumard. Mo. Geol. Surv., Rept., 1855-1871, pp. 191, 207, 
215, 234, 245, 268, 284, 298, 308. 1873. 
Silurian. Missouri. Included in Lower Silurian and Calciferous sand rock. 
Saccharoidal sandstone, Broadhead. Mo. Geol. Surv., Rept., 1855-1871, pp. 10, 26, 
54. 1873. 
Silurian. Missouri. Included in Lower Silurian and Calciferous «and rock. 
Saccharoidal sandstone. Meek. Mo. Geol. Surv., Rept., 1855-1871, pp. 118, 142. 1873. 

Silurian. Missouri. Included in Lower Silurian. 
Saccharoidal sandstone, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 29. 1874. 

Lower Silurian. Missouri. Included in Magnesian limestone series. 
Saccharoidal sandstone, Ladd. Mo. Geol. Surv., Bull. No. 3, pp. 14, 15. 1890. 

Lower Silurian. Missouri. 
Saccharoidal sandstone, Simonds and Hopkins. Ark. Geol. Surv., 1891, vol. ii, 
pp. 30-33. 1891. 
Silurian. Arkansas. 
Sachuest arkose, Shaler, Woodworth and Foerste. U. S. Geol. Surv., Mon., vol. 
xxxiii, p. 379. 1899. 
Carboniferous. Rhode Island. 
Sacramento formation, Smith. Jour, of Geol., vol. ii, pp. 591-593. 1894. 

Devonian. California. Includes Kennett limestones and shales. 
Saddle Creek bed, Drake. Texas Geol. Surv., 4th Ann. Rept., p. 416. 1893. 

Carboniferous. Texas. Included in Cisco division. 
Sailor Canyon, Turner. Am. Geol., vol. xiii, p. 232. 1894. 

Juratrias. California. 
Sailor Canyon formation, Lindgren. U. S. Geol., Surv., Geol. Atlas of U. S., Folio 
No. 39. 1897. 
Juratrias. California. Included in Bed Rock series. 
Sailor Canyon formation, Lindgren. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 66. 1900. 
Juratrias. California. Included in Bed Rock series. 
St. Albans group, Marcou. Boston Boc. Nat. Hist., Proc, vol viii, 1861-62, pp. 
241, 246, 251. 1861. 
Vermont and Canada. Included in Upper Taconic of Marcou. 
St. Anthony sandstone, Hopkins. Indiana Dept. Geol. and Nat. Res., 20th Ajin. 
Rept., 1895, p. 312. 1896. 
Indiana. 
St. Clair marble (limestone), Hopkins. Ark. Geol. Surv., 1890, vol. iv, pp. 50, 
212-252. 1890. 
Silurian. Arkansas. 



WEEKS] SABINE ST. CROIX. 355 

St. Clair limestone, Penrose. Ark. Geol. Surv., 1890, vol. i, pp. 124-128, 166-184. 
1890. 
Silurian. Arkansas. 
St. Clair shales, Lane. Mich. Geol. Surv., Kept. State Board, 1891, 1892, p. 66. 1893. 

Devonian. Michigan. 
St. Clair limestone, Williams. Am. Jour. Sci., 3d sen, vol. xlvii, pp. 326-329. 1894. 

Silurian. Arkansas. Included in Ordovician. 
St. Clair shales. Lane. Mich. Geol. Surv., vol. v, pt. ii, p. 21. 1895. 

Michigan. 
St. Clair shales. Lane. U. S. Geol. Surv., Water-Supply Papers, No. 30, pi. vi. 1899. 

Carboniferous. Michigan. Part. syns. Ohio and Black shale. 
St. Clair shales, Sherzer. Mich. Geol. Surv., vol. vii, pt. i, pp. 25-30. 1900. 

Devonian. Michigan. Exact syn. Genesee. 
St. Clair limestone, Williams. Ark. Geol. Surv., 1892, vol. v, pp. 281-301. 1900. 

Silurian. Arkansas. Included in Niagara. 
St. Croix sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 1st Ann. Rept., 
1872, pp. 68-80. 1873. 
Lower Silurian. Minnesota. 
St. Croix sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. Rept., 
p. 31. 1876. 
Lower Silurian. Minnesota. 
St. Croix sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 5th Ann. Rept., 
pp. 29-34. 1877. 
Lower Silurian. Minnesota. 
St. Croix sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 
p. 424. 1884. 
Minnesota. 
St. Croix sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. i, 
pp. 223, 257, 281. 1884. 
Minnesota. 
St. Croix formation, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. ii, 
pp. xxi, 13, 31. 1888. 
Minnesota. Includes Jordan sandstone, St. Lawrence limestone + certain sands 
and sandy shales. 
St. Croix sandstone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. ii, 

p. 407. 1888. 
St. Croix sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 17th Ann. Rept., 
pp. 56-64. 1889. 
Minnesota. 
St. Croix shales. Hall. Minn. Acad. Nat. Sci., Bull., vol. iii. No. 1, p. 134. 1889. 
Cambrian. Minnesota. Included in St. Croix formation as middle member. 
Part. syn. 4th Magnesian limestone of Missouri. 
St. Croix sandstones. Hall. Minn. Acad. Nat. Sci., Bull., vol. iii. No. 1, p. 134. 1889. 
Cambrian. Minnesota. Included in St. Croix formation as lowest of three mem- 
bers. 
St. Croix, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 245, 330. 1891. 

Cambrian. Mississippi Valley. 
St. Croix sandstone, Keyes. Iowa Geol. Surv., 1st Ann. Rept., vol. i, pp. 20-21. 
1893. 
Cambrian. Iowa. Included in Upper Cambrian. Exact syn. Potsdam. 
St. Croix sandstone, Calvin. Iowa Geol. Surv., vol. iv, pp. 54-61. 1895. 

Cambrian. Iowa. Included in Potsdam series. 
St. Croix sandstone, Norton. Iowa Geol. Surv., vol. iii, pp. 184-186. 1895. 
Cambrian. Iowa. 



356 NORTH AMERICAN GEOLOGIC FORMATION NAMES. |Bti 

St. Blias whiHt Ktiiwll Nut » »« Maj;., vol. iii, pp. 167, 17:1-174. 1891. 

AluHka. 
St. Eiiaa ec^iiBt Upliam l.eol S(x Am., Bull,, vol. iv, ]>, IflO. 1893. 

ri»>istm-ene(?) Mawka 
St. FrancoiB litiMHtotie k.fvi.'s Mo <!t!ii 
Camlirian. MiRsoun Incluleil in Kzar 
St. Joseph linieNtune 
St. Fraoi^ois, Keyes Mo Uoi siirv vnl, vii, pt- ii, p. 649. 1H94. 

T>iwi?r Silurian MiHBOnri 
St. Oenevieve limestone Shumarri St. i»ui!< .\i'ad. Si:i., Trauw., vol. i, p. 406. 
1857. 

Ill -ludeil in Mountain liuieHtone. 
Mo. Cecil, Siirv., Kept., lAV.-lft?!, p. 293. lS7;i. 
('arbi>i)iferoiii< Mmnoun Imlu led in Uiwer (krlmniferouN. 
St. r.pnevie\t Kcycj- (.e.lSncAm Bull., vol. iii, pp, 284, 287. 1892. 

Ijower C^rlxitiift nniH Misfionn 
»t. (iciu'vicu liiiii-'t'iM Kev(« Mo (ieol. Kurv., vol. iv, pp. 30, 7ti. 1K94. 

Ijower (larlNiiiifi niuH Mixnoun Ini'luddl in Kt, l^iiifl Mtage. 
St. Ociu'Vimt limtJHtom kejM" Mo (ieol. Surv., vol. vii, pi. ii, p. 390. 1894. 

Ijciwcr OarlmnifenHH MisNoun [noliuicii in St. lyiuis staKe. 
St. Joe inarlili Hopkins Ark <ieoI Surv., 181)0, vol. iv, pp. 252-3-50. 1890. 

('HrlHinifiToiui Arkaneax Indii lvt\ in Lower Carboniferous. 
Bl. .liHtliniixtout. dallager Mo <ie<l Surv., Rieii. Rept., p. 52. 1898. 

llpiier CarlKinifcrouR Minsouri Iticlu<le<l in I'pper Coal Measurea. 
St. Johns slat* Juke« deneral Rept. on (tuoI. of Newfoundland, p. 51 et seq. 
184.'!. 
Canilirian(?). Newfoundland. 
St. John shales, Dawson. Am. Jour. Sci,, 2d ser., vol. xxxv, pp. 314-319. 1863. 

Devonian. Canada. Included in St. John group or series. 
St, Johnproup, DttwsDii. Am, Jour. Sci,, 2d ser,, vol. sxxv, pp. 314-319. 186;), 

Devonian, Canada. Includes St. Juhn shales. 
St. John group, Matthew. Can. Xat., vol. viii, pp. 244, 247-251. 1863, 

Cambrian. New Brunswick. 
St. John series, Dawson. Regents Univ. of N", Y,, I6ih Ann. Eept., pp, 97-109; 
(inart. Jour. Geol. So<>., vol. sviii, p. 2V)6. 1863. 
Devonian or l'p[)er Silurian. New Brunswiek. ln<-lude<) in Middle and I^wer 
Devonian, I'pper Silurian. Includes L^ttukill, Chemung, Port^«, Genesee, 
Hamilton, Comiferons, Oriskany and Schoharie. 
St. Jean (John) group, Bailey and Matthew. Can. Geol. Surv., Rept. 1870-71, pp. 138- 

Bniiiswic'k. Kxrtct wyn. Aca<lian >;roup. 
1-. Can. Geol, Surv,, Kept. 1870-77, p. 342. 1878. 



mawiek. Included in PrinKir.lial Silurian. Exact syn, 

Cin. S<«>. Nat. Hist,, Jour., vol. iv, No. 4, p. 271. 1881. 

Can, Roy. Soe.| Prof, and Trail?., vol. i. Bee. iv, pp. 87-108, 
■c, iv, pp. 99-124; vol. iii, sec. iv, pp, 29-84; vol. v, see. iv, 
■iii, sec. iv, pp. 123-166; vol. ix, sec. iv, pp. 95-110; vol.xi.eec. 
■:8:(-1893, 
isttick. 
c. N, B. Nat. Hist. Si«;. Bull., vol. i, 1882-86, pp. 97-102. 



WEEKS] ST. ELIAS ST. LAWRENCE. 357 

St. John group, Matthew. Can. Rec. Sci., vol. ii, pp. 357-363. 1887. 

Cambrian. New Brunswick. 

St. John group, Matthew. Can. Roy. Soc, Proc. and Trans., vol. vii, sec. iv, pp. 123- 

129. 1890. 

Cambrian. New Brunswick. 

St. John, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 248, 264. 1891. 

Cambrian. Newfoundland. 

St. John group, Matthew. Can. Roy. Soc, Trans., new ser., vol. iii, sec. iv, pp. 

165-211. 1897. 

Cambrian. New Brunswick. 

St. John group, Matthew. Can. Roy. Soc, Trans., new ser., vol. iv, sec. iv, p. 123. 

1898. 

Cambrian. New Brunswick. 

St. John group, Walcott. Wash. Acad. Sci., Proc, vol. i, p. 324. 1900. 

Cambrian. Newfoundland. 

St. Joseph limestone, Keyes. Mo. Geol. Surv., vol. vi, p. 331. 1894. 

Cambrian. Missouri. Included in St. Francois limestone, Ozark series. Part. 

syn. Osage limestone. Cole Camp limestone. 

St. Joseph limestone, Winslow. U. S. Geol. Surv., Bull. No. 132, p. 14. 1896. 

Missouri. 
St. Lawrence limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 2d Ann. 

Rept., pp. 152-155. 1874. 

Lower Silurian. Minnesota. 

St. Lawrence limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. 

Rept, pp. 32-34. 1876. 

Lower Silurian. Minnesota. Included in Lower Magnesian as lowest portion. 

St. Lawrence limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 5th Ann. 

Rept., p. 29. 1877. 

Lower Silurian. Minnesota. 

St. Lawrence, Upham. Minn. Geol. and Nat. Hist. Surv. 8th Ann. Rept., p. 103. 

1880. 

Lower Silurian. Minnesota. 

St. Lawrence limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., 

vol. i, pp. 222, 253, 282. 1884. 

Minnesota. 

St. Lawrence limestone, Harrington. Minn. Geol. and Nat. Hist. Surv., Final Rept., 

vol. i, p. 334. 1884. 

Cambrian. Minnesota. 

St. Lawrence limestone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept., 

vol. i, p. 424. 1884. 

Minnesota. 

St. Lawrence, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. ii, pp. 70, 

381. 1888. 

Cambrian. Minnesota. 

St. Lawrence limestone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept., 

vol. ii, pp. 119, 160. 1888. 

Cambrian. Minnesota. 

St. Lawrence limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., 

vol. ii, p. xxii. 1888. 

Minnesota. Included in St. Croix. Exact syn. Mendota limestone of Wisconsin 

Survey. 

St. Lawrence formation. Hall. Minn. Acad. Nat. Sci., Bull., vol. iii, No. 1, p. 134. 

1889. 

Cambrian. Minnesota. Exact syn. Mendota limestone of Irving. 



358 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

St. Lawrence formation. Hopkins. Ark. Geol. Sorv., 1890, vol. iv., p. 5(X 1890. 

Cambrian. Arkansas. 
St. Lawrence limestone, Hall and Sardeson. Geol. 8oc. Am., Bull., vol. iii, p. 341. 
1892. 
Ordovician. Minnesota. Included in Magnesian series. 
St. Lawrence limestone, Keyes. Iowa Geol. Surv., vol. i, p. 23. 1893. 
Cambrian. Iowa. Included in St. Croix sandstone. Exact syn. Mendota lime- 
stone. 
St. Lawrence stage, Upham. Am. Geol., vol. xvi, p. 106. 1895. 

Pleistocene. Include<l in Champlain epoch. ^ 

St. Lawrence, Hall and Sardeson. Geol. Soc. Am., Bull., vol vi, pp. 167, 172. 1895. 

Cambrian(?). Minnesota. Included in Magnesian series. 
St. liOuis limestone, Englemann. Am. Jour. Sci., 2d ser., vol. iii, pp. 119-120. 
1847. 
Lower Carboniferous. Illinois. Included in Mountain limestone. 
St. Louis limestone, Swallow. Mo. (ieol. Surv., 1st and 2d Ann. Repts., pp. 93, 174. 
1855. 
Carboniferous. Missouri. Include<l in Mountain or Lower Carboniferous lime- 
stone. 

St. Louis limestone, Shumard. Mo. (leol. Surv., l8tand2d Ann. Repts., pt. ii, pp. 139, 
170, 181. 1855. 

Carboniferous. Missouri. 

St. Louis, Hall. Am. Assoc. Adv. Sci., Proc., vol. x, p. 56. 1856. 

Carboniferous. Mississippi Valley. Exact syn. Concretionary limestone. 

St. Louis limestone, Shumard. St. Louis Acad. Sci., Trans., vol. i, p. 407. lte7. 

Lower Carboniferous. Missouri. Included in Mountain limestone. 

St. Louis limestone, Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 98-100. 1858. 

Carboniferous. Iowa. P^xact. syn. Concretionary limestone. 

St. Louis limestone, Hall. Albany Inst., Trans., vol. iv, pp. 2-3. 1864. 

Carboniferous. Mississippi Valley. Exact syn. Concretionary limestone. 

St. Louis group, Worthen. 111. (ieol. Surv., vol. i, pp. 41-43,8:^-89. 1866. 

Carboniferous. Illinois. Includes Warsaw limestone. 

St. Louis limestone, Worthen. 111. Geol. Surv., vol. i, pp. 292, 321, 333-334, 352, 

353-354. 1866. 

Carboniferous. Illinois. 

St. Louis group, Engelmann. 111. Geol. Surv., vol. i, pp. 378-381, 413-414, 435-438, 

459. 1866. 

Carboniferous. Illinois. 

St. Louis, limestone, Engelmann. St. Ix)uis Acad. Sci., Trans., vol. ii, p. 189. 1868. 

Lower Carlx)niferous. Illinois. 

St. Louis limestone. White. Am. Jour. Sci., 2d ser., vol. xlv, p. 333. 1868. 

Carboniferous. Iowa. 

St. Louis limestone, Worthen. 111. Geul. Surv., vol. iii, pp. 42-44, 64-65, 111-112, 

127-128, 138-140. 1868. 

Carboniferous. Illinois. 

St. Louis group, Worthen. 111. Geol. Surv., vol. iv, pp. 15, 32, 51, 68, 84, 103. 1870. 

Carboniferous. Illinois. 

St. Louis limestone, White. Iowa Geol. Surv., vol. i, pp. 215-222, 225-230. 1870. 

Carboniferous. Iowa. Included in Subcarboniferous. Exact syn. concretionary 

limestone. Part. syn. Warsaw limestone. 

Louis limestone, Shumard. Mo. Geol. Surv., Rept., 1855-1871, pp.293, 320. 1873. 

""arboniferous. Missouri. Included in Lower Carboniferous. 

Louis limestone, Worthen. 111. Geol. Surv., vol. v, pp. 260, 274-277. 1873. 

urbuiiiferous. Illinois. 



WEEKS] ST. LAWBENOE — ST. LOUIS. . 359 

St. Louis limestone, Broadhead. Mo. Geol. Surv. , Kept. , 1873-1 &74, pp. 24, 184. 1874. 

Carboniferous. Missouri. Included in Lower Carboniferous Mountain limestone. 
St. Louis or Coral limestone, Killebrew and Safford. Res. of Tenn., pp. 40-41. 1874. 

Carboniferous. Tennessee. Included in Lower Carboniferous period. 
St. Louis group, Norwood. Ky. Geol. Surv., new ser., vol. i, pp. 362-366. 1876. 

Carboniferous. Kentucky. Included in Lower Carboniferous. 
St. Louis limestone, Shaler. Ky. Geol. Surv., new ser., vol. iii, p. 54. 1877. 

Carboniferous. Kentucky. Included in Sul)carboniferous limestone. 
St. Louis group. Miller. Cin. Soc. Nat. Hist., Jour., vol. iv, No. 4, p. 290. 1881. 
St. Louis series, Vogdes. N. Y. Acad. Sci., Annals, vol. iv, pp. 72-73. 1889. 

Carboniferous. Mississippi Valley, Kentucky. Includes Spergen Hill limestone 
of Illinois. 
St. Louis group. Miller. N. A. Geol. and Pal., p. 71. 1889. 
St. Louis, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 55. 1890. 

Carboniferous. Arkansas. Included in Lower Carboniferous. Exact, syn. War- 
saw -f Concretionary limestone. 
St. Louis limestone, Ladd.^ Mo. Geol. Surr., Bull. No. 3, pp. 14, 15. 1890. 

Lower Carboniferous. Missouri. 
St. Louis limestone, Sullivan. Ky. Geol. Surv. ( Proctor), Geol. of Jackson and Rock- 
castle Cos. 1891. 

Carboniferous. Kentucky. 
St. Louis group, Orton. Ky. Geol Surv., Rept. on Petroleum, etc., p. 135. 1891. 

Carboniferous. Kentucky. 
St. Louis, Gordon. Am. Geol., vol. ix, p. 185. 1892. 

Carboniferous, Iowa. 
St. Louis limestone, Keyes. Geol. Soc. Am., Bull., vol. iii, pp. 283, 294. 1892. 

Lower Carboniferous. Missouri. Includes St. Genevieve limestone, St. Louis 
limestone, and Warsaw limestone in part from St. Louis group. 
St. Louis slates, Van Hise. Int. Cong, of Geol., 5th sess., pi. xiv. 1893. 

Algonkian. Lake Superior region. Included in Huronian. 
St. Louis limestone. Bain. Iowa Geol. Surv., vol. i, pp. 173-179. 1893. 

Carboniferous. Iowa. 
St. Louis, Keyes. Am. Geol., vol. xii, p. 99. 1893. 

Carboniferous. Iowa. 
St. Louis limestone, Keyes. Iowa Geol. Surv., vol. i, p. 72. 1893. 

Carboniferous. Iowa. Included in Mississippian series. 
St. Louis stage, Keyes. Mo. Geol. Surv., vol. iv, pp. 30, 71-72, 76. 1894. 

Lower Carboniferous. Missouri. Includes St. Genevieve sandstone, St. Louis 
limestone, and Warsaw (in part). 
St. Louis stage, Keyes. Mo. Geol. Surv., vol. vii, pt. ii, p. 390. 1894. 

Lower Carboniferous. Missouri. Included in St. Genevieve limestone, St. Louis, 
and Warsaw (in part). 
St. Louis limestone, Keyes. Iowa Geol. Surv., vol. iii, pp. 264-265, 345-352, 447-448. 
1895. 

Carboniferous. Iowa. Included in Mississippian series. 
St. Louis, Bain. Iowa Geol. ^urv., vol. iv, pp. 277-282, 333-336. 1895. 

Carboniferous. Iowa. Included in Mississippian series. Includes Springvale 
and Pella beds and Verdi beds. 
St. Louis formation, Gordon. Jour, of Geol., vol. iii, pp. 289-311. 1895. 

Carboniferous. Iowa. 
St. Louis, Gordon. Iowa Geol. Surv., vol. iv, pp. 214-222. 1895. 

Carboniferous. Iowa. 
St. Louis, Bain. Iowa Geol. Surv., vol. v, pp. 14.3-151. 1896. 

Carboniferous. Iowa. Included in Mississippian series. Includes Springvale, 
Verdi, and Pella beds. 



860 NORTH AMERICAN GEOLOGIC FORMATION NAMES. Ibull.191. 

St. Louis conglomerate, Hubbard. Mich. Geol. Surv., vol. vi, pt. ii, p. 79. 1898. 

Michigan. 
St. Louis stage, Beyer. Iowa Geol. Surv., vol. ix, p. 182. 1899. 

Carboniferous. Iowa. Included in Mississippian series. 
St. Louis, Macbride. Iowa Geol. Surv., vol. ix, p. 127. 1899. 

Carboniferous. Iowa. Included in Mississippian series. 
St. Marys group, Heilprin. Phil. Acad. Nat. Sci., Proc., vol. xxxii, p. 23. 1880. 

Marvland. 
St. Mary River series, Dawson. Can. Geol. Surv., Kept., 1880-81-82, p. 5B. 1883. 

Canada. Included in Laramie. 
St. Mary River beds, Dawson. Can. Geol. Surv. Rept., 1882-83-84, pp. 56G-57C, 58C, 
65C-68C, 112C-114C. 1885. 

Canada. Included in Laramie. 
St. Peters sandstone, Hall. Iowa Geol. Surv., vol. i, pt. i, pp. 52-54. 1858. 

Silurian. Iowa. 
St. Peters sandstone, Whitney. Iowa Geol. Surv., vol. i, pt. i, pp. 337-341. 1858. 

Silurian. Iowa. 
St. Peters sandstone. Hall and Whitney. Am. Jour. Sci., 2 ser., vol. xxvii, p. 107. 
1859. 

Silurian. Iowa. 
St. Peters sandstone, Everett. 111. Nat. Hist. Soc, Trans., vol. i, ser. i, pp. 54--56. 

1861. 
St. Peters, Hall. Regents Univ. of N. Y., 16th Ann. Rept., pp. 119-123. 1863. 

Silurian. Upper Mississippi Valley. Exact syn. Chazy. 
St. Peters sandstone. Freeman. 111. Geol. Surv., vol. iii, pp. 279-280. 1866. 

Silurian. Illinois. 
St. Peter sandstone, Whitney. 111. Geol. Surv., vol. i, pp. 164-165. 1866. 

Silurian. Illinois. 
St. Peters sandstone, Worthen. 111. Geol. Surv., vol. i, pp. 149-151. 1866. 

Silurian. Illinois. Exact syn. Saccharoidal sandstone. Part. syn. Calciferous 
series. 
St. Peters sandstone, Worthen. 111. Geol. Surv., vol. iv, p. 3, 1870. 

Silurian. Illinois. 
St. Peters sandstone, White. Iowa Geol. Surv., vol. i, p. 174. 1870. 

Silurian. Iowa. Included in Primordial group of Lower Silurian. 
St. Peter sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 1st Ann. Rept., 
pp. 88-92. 1873. 

Lower Silurian. Minnesota. 
St. Peters sandstone, Shaw. 111. Geol. Surv., vol. v, pp. 23-24, 115-118, 126-128. 1873. 

Silurian. Illinois. 
St. Peter sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., 2d Ann. Rept, 
pp. 132-135. 1874. 

Lower Silurian. Minnesota. 
St. Peters sandstone, Irving. Am. Jour. Sci., 3d ser., vol. ix, p. 443. 1875. 

Silurian. Wisconsin. Included in Canadian. 
St. Peter sandstone, Harrington. Minn. Geol. and f^i. Hist. Surv., 4th Ann. Rept., 
p. 88. 1876. 

Lower Silurian. Minnesota. 
St. Peter sandstone, Winchell. Geol. and Nat. Hist. Surv., 4th Ann. Rept, p. 40. 
1876. 

Lower Silurian. Minnesota. 
St. Peter sandstone, Winchell. Minn. Geol. and Nat. Hist Surv., 5th Ann. Rept, 
p. 26. 1877. 

Lower Silurian. Minnesota. 



11 WEEKS.] ST. LOUIS ST. PETERS. 361 

St. Peters 8andatone, Irving. Geol. of Wis., vol.ii, p. 555. 1877. 

Lower Silarian. Wisconsin. 
St. Peters sandstone, Chamlierlin. Geol. of Wisconsin, vol. ii, pp. 285-290. 1877. 

Lower Silurian. Wisconsin. 
St. Peters sandstone, Miller. Cin.Sot\ Nat. Hist,, Jour., vol. iv, No. 4, p. 280. 1881. 
St. Peters sandstone, Wooster. Geol. of Wis., vol. iv, p. 129. 1882. 
^> I Wisconsin. 

St. Peters sandstone. Strong, (leol. of Wis., vol.iv, pp. 81-90. 1882. 
3. Canadian. Wisconsin. 

St. Peters sandstone, Chamlierlin. Geol. of Wis., vol.i, p. 145. 1883. 
►^ Silurian. Wisconsin. Included in Ordovician. 

St. Peter sandstone, Harrington. Minn. Geol. an<l Nat. Hist Surv., Final Rept., 
[ vol. i, p. 337. 1884. 

' Minnesota. 

St. Peter sandstone, Winchell. Minn. Geol. and Nat. Hist, Surv., Final Rept., vol. i, 
pp. 218, 251, 288, 656. 1884. 
Minnesota. 
St. Peter sandstone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol.ii, 
pp. 10, 39, 75, 28, 63, 88. 1888. 
Cambrian. Minnesota. 
St. Peters sandstone. Hall. Minn. Acad. Nat. Scti., Bull., vol. iii. No. 1, p. 112. 
1889. 
Lower Silurian. Minnesota. 
St. Peter sandstone, Phinney. U.S. Geol. Surv., 11th Ann. Rept., pt. i, p. 625. 1891. 

Silurian. Indiana. 
St. Peter sandstone, McGee. U. S. Geol. Surv., 11th Ann. Rept., pt. i, p. 330. 1891. 

Silurian. Iowa. 
St. Peter sandstone. Hall and Sardeson. Geol. Soc. Am., Bull., vol. iii, pp. 331, 350. 
1892. 
Upper Silurian. Minnesota. 
St. Peter sandstone, Keyes. Iowa Geol. Surv., vol. i, pp. 24-25. 1893. 

Silurian. Iowa. 
St. Peters sandstone, James. Cin. Soc. Nat. Hist., Jour., vol. xvii. No. 2, p. 115. 1894. 

Ordovician. 
St. Peter, Hershey. Am. Geol., vol. xiv, pp. 169, 174. 1894. 

Cambrian. Illinois. 
St. Peter sandstone, Calvin. Iowa Geol. Surv., vol. iv, pp. 68-73. 1895. 

Silurian. Iowa. Include<l in Ordovician. 
St. Peter sandstone, Norton. Iowa Geol. Surv., vol. iii, pp. 180-182. 1895." 

Silurian. Iowa. 
St. Peter sandstone, Udden. U. S. Geol. Surv., 17th Ann. Rept., pt. ii, p. 837. 
1896. 
Silurian. Illinois. 
St. Peter sandstone, Winchell and Ulrich. Minn. Geol. and Nat. Hist. Surv., Final 
Rept., vol. iii, pt. ii, pi. xxxvii. 1897. 
Lower Silurian. Minnesota. Included in Chazy ^roup. 
St. Peter sandstone, Gallaher. Mo. Geol. Surv., Bien. Rept, p. 21. 1898. 

Silurian (?). Missouri. 
St. Peters sandstone, Blatchley and Ashley. Indiana Dept. Geol. and Nat Res., 
22d Ann. Rept, 1897, pp. 16, 17. 1898. 
Lower Silurian. Indiana. 
St Peters sandstone, Buckley. Wis. Geol, and Nat. Hist. Surv., Bull. No. iv, Econ. 
ser.. No. 2, pp. 249-254. 1898. 
Wisconsin. 



IM\2 NORTH AMKKICAN GEOLOGIC FORMATION NAMES. [bullWI. 

St. PeterH wandHtoM**, Ashley. Indiana Dept. Geol. and Nat. Res.^ 23d Ann. Kept, 
1H9H, pp. 74, 77. 18^). 
Lower Silurian. Indiana. 
St. Peterw Handstone, Calvin and Bain. Iowa Geol. Surv., vql. x, ]>. 400. 1900. 

Silurian. Iowa. Included in Ordovieian. 
St. Stephens, ('onrad. Phil. Acad. Nat. Sci., Proc, vol. vii, p. 257. 1856. 

Eocene. Min.Mis.'-ippi. 
St. Thomas Handntone. Mo. Bur. ( Jeol. and Mines, Rept. on Structural and Economic 
(ieolo^ry, p. 124. UHX). 
Ordovieian. Missouri. 
Salamanca conglomerate, Carll. 2d Pa. Geol. Surv., Rept. P, pp. 203-208. 1883. 

Pennsylvania. 
Salamanca conjrlonierate, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, pp. 1523- 
1529. 1892. 
Devonian. Pennsylvania. Included in Venango. 
Salem stone, (Jorby. Indiana Dept. Geol. and Nat. Hist., 1886, 15th Ann. Rept, 
p. 144. 188(). 
Carboniferous. Indiana. 
Salida schists, Gross. Golo. Sci. Soc, Proc, vol. iv, p. 293. 1893. 

Algonkian. Colorado. 
Saliferous group, Newberry. Senate Ex. Doc, 36th Cong., 1st sess., Ives's Rept. on 
Colorado River, p. 106. 1861. 
Oetaceous. New Mexico. 
Salina iH»riod, Dana. Manual of geology. Revised e<lition, 1864, p. 246. 
Salina, Newberry. Ohio (leol. Surv., vol. i, pt. i, pp. 63, 132. 1873. 

Silurian. Ohio. 
Salina t*lmle, Winchell. Ohio (ieol. Surv., vol. ii, pp. 230, 374. 1874. 

Silurian. Ohio. 
Salina, Newln^rry. Ohio (ieol. Surv., vol. ii, p. 194. 1874. 

Silurian. Ohio. 
Salina, llotchkiss. A GtH>graphical and Political Summary of Virginia, p. 22. 1876. 

UpiH'r Silurian. Virginia. Exact syns. Scalent (Formation V — Rogers). 
Salina, Newberry. Ohioiieol, Surv., vol. iii, p. 8. 1878. 

Silurian. Ohio. IncIudiHi in rp|>er Silurian. 
S;dina, White. 2il Pa. (ieol. Surv., Rept. (t", pp. 101-110. 1883. 

Silurian. Pennsylvania. Included in Lower Helderl>erg or No. vi. 
Salina, Hopkins. .Vrk. (uh>1. Surv., 18VH), Vi>l. iv, pp. 51, 52. 1890. 

Silurian. Arkansiis. Part. syn. Onondaiia sidt group. 
Salina group, Orton. Ohio (ieol. Surv., od Organization, 1st Ann. Rept, pp. 20-21. 
18^H). 
Silurian. Ohio. 
Sulina, Williams and Clark. Maryland; Its Resources, Industries, and Institutions, 
p. 71. !89,S. 
Silurian. Maryland. 
Sulina, Darli»n. N. Y. State iiei»l., 13th Ann. Rept., pp. 2l>ti. 216-218, 248. 1894. 

Silurian. New York. 
Salina group. Lincoln. X. Y. State Cieol., I4th Ann. Kept., pp. S4-87. 1895. 

Silurian. Nt-w Yt»rk. 
Salina gnMip, Bi>hop. N. Y. Slate Get >1. l.^th Ann. Rept.. pp. 311-312. 1897. 
>ilurian. Nt-w York. 

^agn»up. LuthtT. N. Y'. State Gei^L, l."^th Ann. Rept., pp. 2->0-25L 1897. 
Tuui New York. ' 

Clark. Md. <Tei.»l. Surv., vol. iii, pp. 97, 98. 1899. 
an. Maryland. 

k. 



WEEKS.] ST. PETER3 SAN FRANCISCO. 363 

Salina group, Luther. N. Y. State Geol., 16th Ann. Kept., p. 205. 1899. 

Silurian. New York. 
Salina formation, O'Harra. Md. Geol. Surv., Allegany County, p. 92. 1900. 

Silurian. Maryland. 
Salmon River sandstone, Vanuxem. N. Y. Geol. Surv., 4th Ann. Kept., p. 374. 
1840. 

Silurian. New York. 
Salmon river, Walcott. Geol. Soc. Am., Bull., vol. i, p. 844. 1889. 

Silurian. New York. Exact syn. Hudson River. 
Salt Creek gravel, Logan. Kan. Univ. Geol. Surv., vol. ii, pp. 218-219. 1897. 

Pleistocene. Kansas. 
Salt Fork, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 19. 1896. 

Permian. Kansas. Included in Lower Division of Cimarron series. 
Salt Fork division, Cragin. Am. Geol., vol. xix, pp. 352-358. 1897. 

Permian. Kansas, Oklahama. Included in Cimarron series. Includes Dog Creek, 
Cave Creek, Glass Mountain, and Kingfisher formations. 
Salt liake group, Peale. U. S. Geol. Surv. of Terr., 11th Ann. Rept., p. 635. 1879. 

Tertiary. Utah. Included in Pliocene. 
Salt Lake conglomerate, Peale. U. S. Geol. and Geog. Surv. of Terr., 11th Ann. Rept., 
p. 641. 1879. 

Pleistocene. Utah. Included in Quaternary. 
Salt Lake group, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 286. 1892. 

Tertiary. Idaho. 
Salt Plain measures, Cragin. Colo. Coll. Stud., vol. vi, pp. 3, 20-24. 1896. 

Permian. Kansas. Included in Cimarron series. 
Salt Plain formation, Cragin. Am. Geol., vol. xix, pp. 352-355. 1897. 

Permian. Kansas, Oklahoma. Included in Kingfisher formation of Cimarron 
series. 
Salt Wells, Powell. U. S. Geol. and Geog. Surv., Geol. of Uinta Mts., pp. 40, 49, 
154. 1876. 

Cretaceous. Utah. 
Saltsburg sandstone, Stevenson. 2d Pa. Geol. Surv., Rept. K^, p. 22. 1878. 

Carboniferous. Pennsvlvania. Included in Lower Barren series. 
Saltsbui^ sandstone, D'Invilliers. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. ii, 
'p. 2430. 1895. 

Carboniferous> Pennsylvania. Included in No. xiv. Barren or Pittsburg measures. 
San Diego beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 337. 1898. 

Tertiary. California. Included in Pliocene. 
San Fernando beds, Guppy. Lond. Geol. Soc, Quart. Jour., vol. xxii, p. 572. 1866. 

Tertiary. Trinidad. Included in Miocene. 
San Fernando beds, Jukes-Browne. Lond. Geol. Soc, Quart. Jour., vol. Iv, pp. 177- 
181. 1899. 

Tertiary. Trinidad. 
San Francisco sandstone, Blake. Pac R. R. Surv., vol. v, pp. 145-156. 1856. 

California. 
San Francisco sandstone, Whitney. Cal. Geol. Surv., vol. i, p. 77. 1865. 

Cretaceous(?). California. Included in Franciscan series of Lawson and Golden 
Gate series of Fairbanks. 
San Francisco sandstone, Ransome. Univ. of Cal., Dept. of Geol., Bull,, vol. i, pp. 193- 
240. 1894. 

California. 
San Francisco sandstone, Lawson. U. S. Geol. Surv., 15th Ann. Rept., p. 417. 1895. 

Mesozoic. California. Included in Franciscan series. 



364 NORTH AMERICAN GEOLOOK^ FORMATION NAMES. [bullWL 

San Franciwo Hamlstone, Ashley. Jour, of Geol., vol. iii, pp. 437-438, 1895. 

Tertiary. California. Inchi«U*<l in Mio<'ene. 
San Juan formation, Cross. Colo. Sci. Soe., Proe., vol. v, pp. 225-228. 1896. 

Tertiarv. Colorado. 
San Juan fonnation, Cros.*^. V. S. (ieol. Surv., Geol. Atlas of U. S., Folio No. 57 
18im. 
Colorado. Include*! in E<K*ene t)r Xeooene. 
SanMigruel l>e<ls, Dumhle. Geol. S(M'. Am., Bull., vol. iii, pp. 219, 225. 1892. 

Cretaeeous. Texas. Included in rpi)er Cretaceous. Eagle Pass division. 
San Miguel l)eds, Dumhle. Geol. S«»c. Am., Bull., vol. vi, p. 383. 1895. 

Cretaceous. Texas. Included in rp|M»r Creta<*eou8. 
San Miguel formation. Cross. (\)h>. Sci. S<m*., Pro*'., vol. v, pp. 2:i5-241. 1896. 

Tertiarv. Colorado. 
San Miguel fonnation. Cross. U. S. Geol. Surv., (nH)l. Atlas of V. S., Folio No. 57. 
1899. 
Tertiary. Colorado. Include<l in Eocene. 
San Miguel formation, Smith. Jour, of Cieol., vol. viii, pp. 464-465. 1900. 

Tertiary. Colorado. Inchnled in Fx>cene. 
San Miguel IkmIs, Vaughan. V, S. Geol. Surv., Bull. No. 164, p. 21. 1900. 

Cretaceous. Texas. Included in Eagle Pass formation. 
San Pablo formation, Turner. Jour, of (^eol., vol. vi, pp. 493-499. 1898. 

Tertiarv. California. Included in Pliocene. 
San Pa})lo formation, Fairhanks. Jour, of Geol., vol. vi, pp. 563-565. 1898. 

Tertiary. California. IncludtKl in Middle XtH>cene. 
San Pablo formatirm, Merriam. Cniv. ofCal., Dept. of Geol., Bull., vol. ii, pp. 109- 
118. 1898. 
Middle Neocene. California. 
San Pedro l)eds, Dall. U. S. (ieol. Surv., 18th Ann. Kept., pt. ii, p. 3.35. 1898 

Pleistocene. Pacific Coast. 
San Saba series, I)um])Ie. Texas (ieol. Surv., 1st Ann.Rept., pi. iii, p. Ixxii. 1890. 

Silurian. Texas. Inchules Deep Creek and llinton. 
San Saba series, Comstock. Texas (ieol. Surv., 1st Ann. Rept., pp. 301-302. 1890. 

Silurian. Texas. Includes Hinton and Deep Creek divisions. 
San Saba series, Comstock. Texas (ieol. Surv., 2d Ann. Rept., pp. 5(56-56^. 1891. 

Silurian. Texas. Includes llinton and Deep Creek divisions. 
Sand Hill <leposits, Clark aiwl Shattuck. Johns Hopkins Univ. CMrcs., No. 128, 
pp. 13-16. 1S97. 
Cretaceous. New Jersey. 
Sand Mountain conglomerate, Campl>ell and Rutfin. Physical Survey across Ala- 
bama and Mi.<sissippi, j). 57. 18<S3. 
Carboniferous. Alahama. 
Sandpond gneis.s Wolff and Brooks. T. S. (ieol. Surv., 18th Ann. Rept., pt. ii, 
p. 439. 1 898. 
Pre-Cambrian. New Jen^ey. 
Sandstone, Up|>er, Percival. Wis. (ieol. Surv., Rept., 1854, p. 17. 1855. 

Silurian. Wiscf)nsin. 
Sandstone, Lower, Percival. Wis. (ieol. Surv., Rept., 1854, p. 19; 1856, pp. 92-101. 
1855. 
Silurian. Wisconsin. 
" ndstone, Second, Swalk)W. Mo. (ieol. Surv., 1st and 2d .\nn. Rept8.,pp. 125,197. 
1855. 

"ian. Missouri. IndudtMl in Lower Silurian. 
ne. Third, Swallow. Mo. Geol. Surv., 1st and 2d Ann. Repts., p. 128. 1855. 
%n. Missouri. Inchuled in Lower Silurian. 



k. 



WEPK8.] SAN FRANCISCO SANGAMON. 365 

Sandstone, Upper, Whitney. Kept, on Upper Mississippi lead region, p. 151. 1862. 

Silurian. Wisconsin. 
Sandstone, Second, Shuinard. Mo. Geol. Surv., Rei)t. 1855-1871, pp. 194, 209, 217, 
226, 235, 246, 269, 299, 309. 1873. 

Silurian. Missouri. Included in Lower Silurian, Calciferous sandrock. 
Sandstone, Second, Meek. Mo. Geol. Surv., Rept, 1855-1871, pp. 121, 144. 1873. 

Silurian. Missouri. Included in Lower Silurian. 
Sandstone, Third, Meek. Mo. Geol. Surv., Rept., 1855-1871, pp. 127, 147. 1873. 

Silurian. Missouri. Included in Ix)wer Silurian. 
Sandstone, Second, Broadhead. Mo. Geol. Surv., Rept., 1855-1871, pp. 12, 31, 56. 
1873. 

Silurian. Missouri. Include<l in Lower Silurian, Calciferous sandrock. 
Sandstone, First, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 29, 325. 1874. 

Silurian. Missouri. Included in Magnesian limestone series, Calciferous sand- 
rock. Exact syn. Saccharoidal sandstone. 
Sandstone, Second, Broadhead. Mo. Geol. Surv., Rept., 1873-74, pp. 30, 327, 364. 
1874. 

Silurian. Missouri. Included in Magnesian limestone series, Calciferous sandrottk. 
Sandstone, Third, Broadhead. Mo. Geol. Surv., Rept., 1873-74, p. 30. 1874. 

Silurian. Missouri, Included in Magnesian limestone series, Potsdam. 
Sandstone, Lower, Broadhead. Mo. Geol. Surv., Rept, 1873-74, p. 352. 1874. 

Silurian. Missouri. Included in Primordial, Potsdam. 
Sandstone, First, Broadhead. Am. Geol., vol. xi, p. 262. 1893. 

Cambrian. Missouri. 
Sandstone, Second, Broadhead. Am. Geol., vol. xi, p. 264. 1893. 

Cambrian. Missouri. 
Sandstone, First, Broadhead. Am. Geol., vol. xii, p. 77. 1893. 

Cambrian. Missouri. Included in Magnesian series or Ozark. 
Sandstone, Second, Broadhead. Am. Geol., vol. xii, p. 77. 1893. 

Cambrian. Missouri. Included in Magnesian series or Ozark. 
Sandstone, First, Shepard. Mo. (ieol. Surv., vol. xii, pp. 49, 57-61. 1898. 

Silurian. Missouri. Included in Ozark series. 
Sandstone, Second, Shepard. Mo. Geol. Surv., vol, xii, pp. 49, 51-52. 1898. 

Silurian. Missouri. Included in Ozark series. 
Sandsuck shale, Hayes. U. S. (ieol. Surv., Geol. Atlas of U. S., Folio No. 20. 1895. 

Cambrian. Tennessee. Included in Chilhowee series. 
Sandsuck shale, Keith. U. S. Geol. Surv., Geol. Atlas of T. S., Folios Nos. 16,25. 
1895, 1896. 

Cambrian. Tennessee and North Carolina. 
Sandusky bluestone, Orton. Ohio Geol. Surv., vol. vi, p. 763. 1888. 

Ohio. Part. syn. Delaware bluestone. 
Sandusky limestone, Newberry. Cin. Soc. Nat. Hist., Jour., vol. xii, Nos. 2, 3, p. 49. 
1889. 

Devonian. Ohio. 
Sangamon weathered zone, Leverett. Jour, of Geol., vol. vi, pj). 176-181. 1898. 

Pleistocene. Illinois. 
Sangamon soil, Leverett. U. S. (ieol. Surv., Mon., vol. xxxviii, pp. 125-130. 1899. 

Pleistocene. Mississippi Valley. 
Sangamon soil, Udden. Iowa Geol. Surv., vol. ix, p. 349. 1899. 

Pleistocene. Iowa. 
Sangamon, Norton. Iowa Geol. Surv., vol. ix, p. 480, 1899. 

Pleistocene. Iowa. 
Sangamon soil, Leverett. U. S. Geol. Surv., Geol. Atlas of U. tS., Folio No. 67. 1900. 

Pleistocene. Illinois, Indiana. 



366 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Sankaty IxhIs, Woodworth. U. S. (Jeol. Surv., 17th Ann. Rept., pt. i, p. 976. 1896. 

Pleistocene. Massachusetts. 
Sankaty epoch, Woodworth. Geol. Soc\ Am., Bull., vol. viii, pp. 197, 206. 1897. 

Pleistocene. Massachusetts. 
Santa Anna heil, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 419-420. 1893. 

Carboniferous. Texas. Included in (Msco division. 
Santa Anna limestone. Smith. Jour of Geol., vol. vi, pp. 779-780. 1898. 

Juratrias. California. Include<l in Trias. 
Santa Clara lake beds, Cooi)er. ('al. Acad, of Sci., Proc, 1893-94, 2d ser., vol. iv, 
p. 171. 1895. 
Pliocene. California. 
Santa Cruz formation, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 342. 
1898. 
Tertiary. Patagonia, South America. Included in Vicksburgian stage, Oligocene. 
Exact syn. Supra-Patagonian. 
Santa Fe marls, Cope. Phil. Acad. Nat. Sci., Proc, vol. xxvi, p. 147. 1874. 

Tertiary. Exact syn. Pliocene. 
Santa Fe marls, ("ope. Rept. of Sec. of War to 44th ('ong., vol. ii, pt. ii, p. 986. 
1875. 
Tertiary. New Mexico. Exact syn. Loup Fork. 
Santa Fe marl, Stevenson. U. S. Geog. and (ieol. Surv. W. of UKlth M., vol. ill, 
SuppL, p. 162. 1881. 
Tertiary. New Mexico. Included in Pliocene. Exact, syn. Loup Fork. 
Santa Fe marl, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 302. 1892. 

Tertiary. New Mexico. 
Santee beds, Tourney. Geol. of S. C, 1848. 

Tertiary. South Carolina. Included in Eocene. 
Santee beds, Pratt. Ashley River phosphates. 1868. 

Tertiary. South Carolina. Included in Eocene. 
Santee beds, Shaler. Boston Soc. Nat. Hist, Proc, vol. xiii, 1869-71, p. 229. 1870. 

South Carolina. 
Santee River beds. Holmes. Phosphate Rock of S. C. 1878. 

Tertiary. South Carolina. Included in Eocene. Part. syn. Eocene marl. 
Santee beds, Clark. U. S. Geol. Surv., Bull. No. 83, p. 52. 1891. 
Tertiary. South Carolina. Included in Eocene. Includes Ashley and Cooper 
beds. 
Santee beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 342. 1898. 

Tertiary. South Carolina. Included in Jacksonian stage. Eocene. 
Saskatchewan gravels, McConnell. Can. Geol. Surv., new ser., vol. i, pp. 70C-71C. 
1886. 
Pliocene(?). Canada. 
Saskatchewan, Upham. Geol. Soc. Am., Bull., vol. v, pp. 87, 89. 1894. 

Tertiary. Minnesota. 
Saskatchewan gravels, Dawson. Jour, of Geol., vol. iii, pp. 507-511. 1895. 
Pleistocene. Western British America. Included in Albertan formation. 
Saskatchewan, Dawson, (ieol. Soc. Am., Bull., vol. vii, p. 40, 1895. 

Pleistocene. Alberta. Exact syn. Lafayette (?). 
Sassafras River greensand, McGee. U. S. Geol. Surv., 7th Ann. Rept., p. 612. 
1888. 
Cretaceous. Maryland. 
•geen clay, Logan. Can. Geol. Surv., Rept., 1843-63, pp. 887, 896-907. 1863. 
nada. Included in Drift (Upper stratified portion). 
een, Spencer. Wash. Phil. Soc, Bull., vol. xi, 1891, p. 506. 1892. 
jistocene. Ontario, Canada. 



WEEKS.] 8ANKATY SCHOHARIE. 367 

Saiilt St. Mary sandstone, Selwyn. Science, vol. i, p. 11. 1883. 

Canada. 
Savage, Darton and Taff. U. S. Geol. Surv., Geol. Atlas U. S., Folio No. 28. 1896. 

Carboniferous. West Virginia and Maryland. 
Savage, Clark. Md. Geol. Surv., vol. i, p. 156. 1897. 

Carboniferous. Maryland. Included in Coal Measures. 
Savage formation, Clark. Md. Geol. Surv., vol. i, p. 186. 1897. 

Carboniferous. Maryland. 
Savanna sandstone, Taff. U. S. Geol. Surv., 19th Ann. Rept., pt. iii, p. 437. 1899. 

Carboniferous. Indian Territory. Included in Coal Measures. 
Savanna formation, Taff and Adams. U. S. Geol. Surv., 21st Ann. Rept., pt. ii, 
p. 276. 1900. 

Carboniferous. Indian Territory. 
Savoy schist, Emerson. U. S. Geol. Surv., Geol. Atlas of IT. S., Haw ley sheet. 
1892. 

Silurian. Massachusetts. 
Savoy schist, Emerson. U. S. Geol. Surv., Geol. Atlas of U.S., Folio No. 50. 1898. 

Silurian. Massachusetts. 
Savoy schist, Emerson. U. S. Geol. Surv., Mon., vol. xxix, pp. 156-163. 1898. 

Silurian. Massachusetts. Included in Lower Silurian. 
Sawatch quartzite, Eldridge. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 9^ 
1894. 

Cambrian. Colorado. 
Sawatch quartzite, Emmons. U. S. Geol. Surv., Geol. Atlas of V. S.,vFolio No. 48. 
1898. 

Cambrian. Colorado. 
Saxicava sand, Dawson. Can. Nat. vol. ii, pp. 405-414. 1857. 

Tertiary. Canada. Included in Pliocene. 
Saxicava sand, Dawson. Can. Nat., new ser., vol. vi, pp. 22, 37-39. 1872. 

Post-Pliocene. Canada. 
Saxicava sand, Matthew. Can. Geol. Surv., Rei)t., 1877-78, p. 31EE. 1879. 

Quaternary. New Brunswick. 
Saxicava sand, Chalmers. Can. Geol. Surv., new ser., vol. vii, pp. 111M-116M. 
1896. 

Pleistocene. New Brunswick, Nova Scotia. 
Scalent series, Rogers. Geol. of Pa., vol. i, pp. 106, 134-136 et seq.; vol. ii, p. 754. 
1858. 

Silurian. Pennsylvania. Includes Onondaga and Waterlime. 
Schoharie grit. Hall. Geol. of N. Y., pt. iv, 4th Geol. Dist., pp. 18, 151. 1843. 

Paleozoic. New York. Included in New York system. Includes Grit shale. 
Schoharie grit, Mather. Geol. of N. Y., pt. i, p. 340. 1843. 

Paleozoic. New York. Included in Helderberg division. 
Schoharie grit, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 56. 1846. 

New York. Included in Helderberg division of the New York system. 
Schoharie grit, Emmons. Agric. of N. Y., vol. i, p. 174. 1846. 

New York. Included in Helderberg division of New York system. 
Schoharie sandstone, Dawson. Am. Jour. Sci., 2d ser., vol. xxxv, pp. 314-319. 
1863. 

Devonian. Canada. 
Schoharie grit, Newberry. Ohio Geol. Surv., vol. i, pt. i, p. 67. 1873. 

Devonian. Ohio. 
Schoharie, Claypole. Am. Phil. Soc, Proc, vol. xx, p. 534. 1883. 

Devonian. Pennsylvania. 



368 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull. 191. 

Schoharie j?rit, l^esley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1040 et seq. 
1892. 

Devonian. Pennsylvania. Includeti in Oriskany. 
Schoharie grit, Darton. Geol. Soc. Am., Bull., vol. iv, p. 437. 1893. 

Silurian. New York. 
Schoharie grit, Darton. N. Y. State Geol., 13th Ann. Rept, pp. 208^209, 243-244. 
1894. 

Devonian. New York. 
Schooner Head series, Shaler. U. S. Geol. Surv., 8th Ann. Rept., pt. ii, p. 1041. 
1889. 

Maine. 
Schreyfogels limestone, Piatt. 2d Pa. Geol. Surv., Rept. G^, p. 187. 1880. 

Carboniferous. Pennsylvania. 
Scioto slates and shales, Owen. Rept. Geol. Reconn. State of Indiana, 1838, pt. ii, 
p. 59. 1859. 

Ohio. Exact syn. black slate at base of knobs in Indiana. 
Scott shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 33. 1896. 

Carboniferous. Tennessee. Part. syn. Walden sandstone. 
Scott shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 40. 1897. 

Carboniferous. Tennessee. 
Scotts Creek flint, Orton. Rev. of Strat. Geol. of eastern Ohio, p. 22. 1880. 

Carboniferous. Ohio. Exact syn. Logan flint. 
Scutella limestone, Owen. Am. Jour. Sci., 2d ser., vol. i, p. 50. 1846. 

Silurian. New York. Included in Catskill shaly limestone. 
Sea Urchin limestone, Bennett. Kan. Univ. Geol. Surv., vol. i, p. 64. 1896. 

Carboniferous. Kansas. 
Sebastian stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. Includes Greenwood sandstone, Tomlinson shale, 
Hartwell sandstone, Belva shale, and Ozark sandstone. 
Secret Canon shale, Hague. U. S. Geol. Surv., 3d Ann. Rept., pp. 253, 255. 1883. 

Cambrian. Nevada. 
Secret Canon, Walcott. U. S. Geol. Surv., Bull. No. 81, pp. 246, 315. 1891. 

Cambrian. Nevada. Included in Middle Cambrian. 
Secret Caiion shale, Hague. U. S. Geol. Surv., Mon., vol. xx, p. 39. 1892. 

Cambrian. Nevada. 
Secret Canon shale, Walcott. U. S. Nat. Mus., Proc, vol. xxi, p. 413. 1898. 

Cambrian. Vermont. Included in Middle Cambrian. 
Sedalia limestone, Vogdes. St. Louis Acad. Sci., Trans., vol. v, p. 615. 1892. 

Missouri. 
Selinsgrrove, White. 2d Pa. Geol. Surv., Rept. G', p. 441. 1883. 

Devonian. Pennsylvania. 
Selinsgrove, sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. ii, p. 1255 et seq. 
1892. 

Devonian. Pennsylvania. Included in No. VIIlc. Exact syn. Monteballo 
sandstone. 
Selkirk series, Dawson. Geol. Soc. Am., Bull., vol. ii, pp. 165, 171. 1891. 

Cambro-Silurian. British Columbia. 
Selkirk series, Dawson. Can. Geol. Surv., new ser., vol. vii, pp. 30B, 32B-33B. 1896. 

Cambrian. British Columbia. Part syn. Castle Mountain group. 
Selkirk series, McConnell. Can. Geol. Surv., new ser., vol. x, p. 30A. 1898. 

British Columbia. 
Sellersburg beds, Kindle. Am. Pal., Bull. No. 12, pp. 8, 110. 1899. 

Devonian. Indiana. 



WEEKS] SCHOHARIE — SEVIER. 369 

Seneca limestone, Hall. N. Y. (Jeol. Surv., :M Ann. Kept., pp. 292-295, 310. 1839. 

Devonian (?), New York. 
Seneca limestone, Vanuxem. N. Y. Geol. Surv., 3d Ann. Rept., pp. 275-278. 1839. 

Devonian? New York. 
Seneca freestone, Owen. 30th Cong., Ist sess., Sen. Misc. No. 23, p. 39. 1848. 

Triassic. Maryland. Included in New Red sandstone. 
Seneca limestone, Lincoln. N. Y. State Mus., 48th Ann. Rept,, pt. ii, pp. 90-92. 
1895. 

Devonian. New York. 
Senecan, Clarke and Schuchert. Science, new ser., vol. x, pp. 876-877. 1899. 

Devonian. New York. Included Tully limestone, (Tenesee shale, Portage beds. 
Sequoyah formation, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 44. 1897. 

Carboniferous. Virginia and West Virginia. Part. syn. No. xiii, Lower Coal 
group, of Rogers. 
Serai series, Rogers. Am. Jour. Sci., Ist ser., vol. xlvii, p. 156. 1844. 
Serai conglomerate, Rogers. Geol. of Pa., vol. i, pp. 109, 146-148 et seq.; vol. ii, 
p. 758. 1858. 

Carboniferous. Pennsylvania. Includes Lower Coal Measures. Exact syn. Coal 
Measures. 
Serai conglomerate, Rogers. Geol. of Pa., vol. ii, p. 16 et seq. 1858. 

Carboniferous. Pennsylvania. 
Sespe brownstone formation, Watts. Cal. State Mg. Bur., Bull. 11, pp. 25-26, etc. 
1897. 

01igocene( ?) . California. 
Setters quartz schist, Williams. U. S. Geol. Surv., Baltimore, Md., Geologis sheet. 
1892. 

Maryland. 
Setters Ridge quartzite, Mathews. Md. Geol. Surv., vol. ii, p. 213. 1898. 

Maryland. 
Severn, Darton. Geol. Soc. Am., Bull., vol. ii, pp. 431, 438. 1891. 

Cretaceous. Virginia and Maryland. 
Severn, McGee, Williams, Darton. Int. Cong, of Geol., 5th sess., pp. 237, 247-248. 
1893. 

Tertiary. Maryland, District of Columbia and Virginia. 
Severn, Williams and Clark. Maryland; Its Resources, Industries, and Institu- 
tions, pp. 75-77. 1893. 

Cretaceous. Maryland. Included in Upper Cretaceous. 
Severn, Darton. U. S. Geol. Surv., Bull. No. 138, p. 125. 1896. 

Cretaceous. Atlantic Coastal Plain. 
Severy shales, Haworth. Kan. Univ. Geol. Surv., vol. iii, p. 66. 1894. 

Carboniferous. Kansas. 
Sevier, Campbell. Geol. Soc. Am., Bull., vol. v, pp. 171, 176. 1894. 

Silurian. Virginia. Included in Hudson River. 
Sevier shale, Hayes. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 20. 1895. 

Silurian. Tennessee. 
Sevier shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 12, 26. 

1894, 1896. 

Silurian. Kentucky, Virginia and Tennessee. 
Sevier shale, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 16, 25, 27. 

1895, 1896. 

Silurian. Tennessee and North Carolina. 
Sevier shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 44. 1897. 
Silurian. Virginia and West Virginia. 

Bull. 191—02- — 24 



370 NORTH AMERICAN GEOLOGIC FORMATION NAMES. [bull.191. 

Sevier shale, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 59. 1899. 

Silurian, Virginia and West Virginia. 
Sewanee division, White. Geol. Soc. Am., Bull., vol. viii, p. 290. 1897. 

Upper Carboniferous. Tennessee. Included in Pottsville. 
Sewell, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 26. 1896. 
Carboniferous. Virginia and West Virginia. Included in Coal-bearing strata, 
Pottsville series. 
Sewell formation, Campbell and Mendenhall. U. S. Geol. Surv., 17th Ann. Rept., 
pt. ii, p. 494. 1896. 
Carboniferous. West Virginia. Included in No. xii of Rogers, Conglomerate series 
of Fontaine. 
Sewell marls, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, pp. 316-338. 
1897. 
Cretaceous. New Jersey. Included in Rancocas formation. 
Sewell marls, Clark, Bagg and Shattuck. N. J. Geol. Surv., Rept. 1897, p. 188. 
1898. 
Cretaceous. New Jersey. Included in Rancocas formation, 
Sewell formation. White. U. S. Geol. Surv., 20th Ann. Rept., pt. ii, pp. 816-817. 
1900. 
Carboniferous. Virginia and West Virginia. 
Sewickley sandstone, White. U. S. Geol. Surv., Bull. No. 60, p. 65. 1891. 
Carboniferous. Pennsylvania. Included in Upper Coal Measures, Monongahela 
River series. 
Seymour beds, Cummins. Texas Geol. Surv., 4th Ann. Rept., pp. 181-190. 1893. 

Pleistocene. Texas. 
Shadrick mill sandstone, Drake. Texas Geol. Surv., 4th Ann. Rept., pp. 376-378. 
1893. 
Carboniferous. Texas. Included in Strawn division, 
Shakopee limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 2d Ann. Rept., 
pp. 138-147. 1874. 
Lower Silurian. Minnesota. Included in Lower Magnesian limestone. 
Shakopee sandstone, Winchell. Am. Jour. SciT, 3d ser., vol. ix, p. 443. 1875. 

Silurian. Minnesota. Part. syn. Lower Magnesian limestone on Mississippi Bluffs. 
Shakopee limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 4th Ann. Rept., 
p. 38. 1876. 
Lower Silurian. Minnesota. Included in Lower Magnesian limestone. 
Shakopee limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., 5th Ann. Rept., 
p. 26. 1877. 
Lower Silurian. Minnesota. Part. syn. Chazy limestone. 
Shakopee limestone, Upham. Minn. Geol. and Nat. Hist. Surv., 8th Ann. Rept., 
p. 106. 1880. 
Lower Silurian. Minnesota. 
Shakopee limestone, Harrington. Minn. Geol. and Nat. Hist. Surv., Final Rept., 
vol. i, p. 336. 1884. 
Cambrian. Minnesota. 
Shakopee limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., 
vol. i, pp. 219, 252, 285, 657. 1884. 
Minnesota. 
Shakopee limestone, Upham. Minn. Geol. and Nat. Hist. Surv., Final Rept, vol. i, 
pp. 429, 636. 1884. 
•nnesota. 

■>pee limestone, Winchell. Minn. Geol. and Nat. Hist. Surv., Final Rept., vol. ii, 
pp. xvi-xxii, 10, 38, 73, 388. 1888. 
inesota. 



\ 



WEEKS.] SEVIER SHASTA. 371 

Shakopee formation, Hall. Minn. Acad. Nat. 8ci., Bull., vol. iii, No. 1, p. 132. 1889. 

Cambrian. Minnesota, 
Shakopee formation, Hopkins. Ark. Geol. Surv., 1890, vol. iv, p. 50. 1890. 

Cambrian. Arkansas. 
Shakopee limestone, Chaney. Minn. Acad. Nat. Sci., vol. iii, 2d ser., pp. 280-284. 

1891. Minnesota. 
Shakopee limestone, Hall and Sardeson. (ieol. Soc. Am., Bull., vol. iii, p. 341. 1892. 

Ordovician (?). Minnesota. Included in Magnesian series. 
Shakopee dolomite, Hall and Sardeson. Geol. Soc. Am., Bull., vol. vi, pp. 167, 180. 
1895. 

Cambrian. Minnesota. Included in Magnesian series. 
Shaly limestone, Darton. N. Y. State Geo!., 13th Ann. Kept., pp. 246, 303-304. 
1894. 

Devonian. New York. 
Shark River marl, Clark, N. J. State Geol., Ann. Rept. for 1892, pp. 208-210. 1893. 

Tertiary. New Jersey. Included in Eocene (?) . Includes Blue marl. 
Shark River formation, Clark. Jour, of Geol., vol. ii, p. 167. 1894. 

Tertiary. New Jersey. Included in Eocene. 
Shark River, Clark. N. J. Geol. Surv., Rept. 1893, pp. 338-339. 1894. 

Eocene. New Jersey. Part. syn. Upper marl l)ed. 
Shark River, Darton. U. S. Geol. Surv., Bull. No. 138, p. 41. 1896. 

Cretaceous. New Jersey. Included in Eocene. Exact syn. Upper marl in part. 
Shark River formation, Clark, Bagg and Shattuck. Geol. Soc. Am., Bull., vol. viii, 
pp. 316, 341. 1897. 

Tertiary. New Jersey. Included in Eocene. 
Shark River formation, Clark, Bagg and Shattuck. N. J. Geol. Surv., Rept. 1897, 
pp. 192-193. 1898. 

Tertiary. New Jersey. Included in Eocene. 
Sharon group, Rogers. Geol. of Pa., vol. ii, p. 489, et seq. 1858. 

Carboniferous. Pennsylvania. Included in Coal Measures. 
Sharon coal group, Stevenson. 2d Pa. Geol. Surv., Rept. K*-', pp. 103-105. 1877. 

Carboniferous. Pennsylvania. Included in Lower Carboniferous. 
Sharon-Glean conglomerate, Carll. 2d Pa. Geol. Surv., Ann. Rept. 1886, pt. ii, 
pp. 636-639. 1887. 

Carboniferous. Pennsylvania. 
Sharon conglomerate. White. U. S. (Jeol. Surv., Bull. No. 65, p. 204. 1891. 

Carboniferous. Pennsylvania, Ohio. Included in Pottsville conglomerate series. 
Exact syns. Olean conglomerate. Garland conglomerate. 
Sharon conglomerate, Orton. Ohio Geol. Surv., vol. vii, pp. 36, 59, 60. 1893. 

Carboniferous. Ohio. Included in Conglomerate group. 
Sharpsville sandstone. White. 2d Pa. Geol. Surv., Rept. Q^ pp. 61-62. 1880. 

Carboniferous. Pennsylvania. Included in Subconglomerate Measures. 
Sharpsville sandstone, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, p. 1761. 
1895. 

Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Shasta group, Whitney. Cal. Geol. Surv., Pal., vol. ii, p. xiv. 1869. 

Cretaceous. California. 
Shasta group, Becker. Geol. Soc. Am., Bull., vol. ii, p. 20i. 1891. 

Cretaceous. California. 
Shasta, White. U. S. Geol. Surv., Bull. No. 82, pp. 183, 255. 1891. 

Cretaceous. Pacific coast. Included in Lower Cretaceous. 
Shasta formation, Stanton. Geol. Soc. Am., Bull., vol. iv, p. 245. 1893. 

Cretaceous. California. Exact syn. Queen Charlotte formation. 



372 NORTH AMERICAN GEOLOGIC B^ORMATION NAMES. [bull.19L 

Shasta group, Stanton. Jour, of (leol., vol. v, pp. 594-599. 1897. 

Cretaceous. Included in Lower Cretaceous. 
Shasta-Chico series, Diller. Geol. Soc. Am., Bull., vol. iv, p. 205. 1893. 

Cretaceous. California. 
Shasta-Chico series, Diller and Stanton. Geol. Soc. Am., Bull., vol. v, p. 436. 1894. 
Jurassic. California and Oregon. Includes Chico, Horsetown, and Knoxville 
beds. Part. syns. Poti)ma(r and Comanche. 
Shawangtink grit, Mather. N. Y. (Jeol. Surv., 4th Ann. Rept., pp. 246-255. 1840. 

Silurian. New York. 
Shawangunk grit, Mather. Geol. of N. Y., pt. i, pp. 355-365. 1843. 

Paleozoic. New York. Included in Ontario division. Includes No. 4, Pennsyl- 
vania Surv. 
Shawangunk conglomerate, Hall. Geol. of N. Y., pt. iv, 4th GeoL Dist., pp. 18, 31. 
1843. 
Paleozoic. New York. Included in New York system. Exact syn. Oneida 
conglomerate. 
Shawangunk grit, Darton. N. Y. State Geol., 13th Ann. Rept., pp. 220-221, 308. 
1894. 
Silurian. New York. 
Shawnee limestone, Orton. Ohio Geol. Surv., vol. iii, p. 895. 1878. 

Carboniferous. Ohio. Exact syn. Buff limestone. 
Shawnee formation, Haworth. Kan. Univ. Geol. Surv., vol. iii, pp. 93-94. 1898. 
CarlK)niferous. Kansas. Included in Up[)er Coal Measures. Includes Osage 
shales, Topeka limestone, Calhoun shale. Dee Creek limestone, Tecumseh 
shale, and LeCompton limestone and shale. 
Shelby bed, Foerste. Indiana Dept. Geol. and Nat. Res., 22d Ann. Rept., 1897, 
p. 235. 1898. 
Devonian. Indiana. 
Shelbyville moraine, Leverett. U. S. Geol. Surv., Mon., vol. xxxviii, pp. 192-217. 
1899. 
Pleistocene. Illinois. 
Shell Bluflf group, Conrad. Am. Jour. Sci., 2d ser., vol. xli, p. 96. 1866. 

Tertiary. Upper Eocene. Mississippi. 
vShell Bluff group, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, pp. 341, 342. 1898. 

Tertiary. Georgia. 
Shenandoah limestone, Darton. Am. Geol., vol. x, p. 13. 1892. 

Silurian. Virginia. Part. syns. Trenton, Chazy, Levis, and Calciferous. 
Shenandoah limestone, Keith. U. S. Geol. Surv., 14th Ann. Rept., pt. ii, p. 337. 
1894. 
Cambrian-Silurian. Virginia and Maryland. 
Shenandoah limestone, Campbell. Geol. Soc. Am., Bull., vol. v, p. 171. 1894. 

Ordovician? Virginia. 
Shenandoah limestone, Darton. U. S. Geol. Surv., Geol. Atlas of U. S., Folios Nos. 
14, 32. 1894, 1896. 
Cambrian-Silurian. Virginia, West Virginia. Exact syns. Montgomery grits, Rog- 
ers, No. X, and Vespertine. 
Shenandoah limestone, Keith. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 10. 
1894. 
Cambrian-Silurian. Virginia, Maryland, and West Virginia. Included in Cambro- 
Silurian. 
landoah limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 

No. 26. 1896. 
nbro-Silurian. Virginia and West Virginia. 

indoab formation, Clark, Md. Geol. Surv., vol. i, pp. 157 178-180. 1897. 
4X>-Silarian. Maryland. Includes Upper and Lower. 



L 



WEEKS.] SHASTA SHINARUMP. 878 

Shenandoah, Clark. Md. Geol. Surv., vol. ii, p. 170. 1898. 

Canibro-Silurian. Maryland. 
Shenandoah, Clark. Md. Geol. Surv., vol. iii, pp. 93, 97. 1899. 

Silurian-Cambrian. Maryland. 
Shenandoah limestone, Campbell. U. S. Geol. Surv., Geol. Atlas of U. S., Folio 
No. 59. 1899. 

Cambro-Silurian. Virginia, Tennessee. 
Shenandoah limestone, Darton. U. 8. Geol. Surv., Geol. Atlas of U. 8., Folio No. 61. 
1899. 

Silurian. Virginia and West Virginia. 
Shenandoah limestone, Prosser. Jour, of Geol., vol. viii, pp. 653-663. 1900. 

Silurian. Maryland and Virginia. Included in Ordovician. 
Shenango sandstone. White. 2d Pa. Geol. Surv., Rept. Q', pp. 60-61. 1880. 

Carboniferous. Pennsylvania. Included in Subconglonierate Measures. 
Shenango group. White. 2d Pa. Geol. Surv., Rept. Q*, pp. 77-81. 1881. 

Carboniferous. Pennsylvania. Included in Pocono. 
Shenango shale, Lesley. 2d Pa. Geol. Surv., Final Rept., vol. iii, pt. i, p. 1749. 1895. 

Carboniferous. Pennsylvania. Included in No. x, Pocono. 
Sherburne sandstone, Clarke. N. Y. State Geol., 15th Ann. Rept., p. 43. 1897. 

Devonian. New York. 
Sheridan quartzite, Weed. U. S. Geol. Surv., Geol. Atlas of U. S., Folio No. 30. 
1896. 

Algonkian. Wyoming. 
Sheridan beds, Scott. Geol. Soc. Am., Bull., vol. ix, p. 406. 1898. 

Pleistocene. Texas, New Mexico. Exact syn. Equus beds. 
Sheridan, Matthew. Am. Mus. Nat. Hist, Bull., vol. xii, p. 20. 1900. 

Pleistocene. Western U. S. Exact syn. Equus. 
Sheridan sandstone, Gregory. U. S. Geol. Surv., Bull. No. 165, p. 132. 1900. 

Maine. 
Sheridan sandstone, Williams. U. 8. Geol. Surv., Bull. No. 165, p. 47. 1900. 

Silurian. Maine. 
Shiloh marl, Dall. Wagner Free Inst. Sci., Trans., vol. iii, pt. ii, p. 209. 1892. 

Miocene. Florida(?). Included in Chipola epoch, Tampa group. Part syn. 
Tampa group. 
Shiloh marl, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, pp. 40-41. 1892. 

Tertiary. New Jersey. 
Shiloh marl, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 340. 1898. 

Tertiary. New Jersey. Included in Chipola stage, Gligocene. 
Shinier gypsum, Cragin. Am. (ieol., vol. xix, pp. !i56-358. 1897. 

Permian. Kansas, Oklahoma. Included in Cave Creek formation of Cimarron 
series. 
Shinarump, Powell. U. S. (xeog. and Geol. Surv., Geol. of Uinta Mts., pp. 41, 54, 150. 
1876. 

Utah. Includes Upper and Lower Shinaruinp, Shinarump conglomerate. 
Shinarump conglomerate, Powell. U. S. Geog. and (?eol. Surv., GjoI. of Uinta 
Mts., p. 41. 1876. 

Utah. Included in Shinarump. 
Shinarump group, Gilbert. U. S. Geog. and Geol. Surv., Rept. on Henry Mts., p. 6. 
1877. 

Utah. 
Shinarump, Dutton. U. S. Geog. and Geol. Surv., Geol. of High Plateaus of Utah, 
pp. 144, 207. 1880. 

Trias or Permian. Utah. 
Shinarump, Walcott. Geol. Soc. Am., Bull., vol. i, p. 62. 1889. 

Trias. Arizona. 



374 NORTH AMKRICAN GEOLOGIC FORMATION NAMES. [bii.i.ISI. 

Shmenville wmglomerale, Piatt. 2d Pa. Geol. Surv., Kept. G', pp. 188-187. 1880. 

Carboniferoua. PenDsylvania. Included iii Pottaville. 
Shinereville conglomerate, D'lnvilliere. 2il Pa. Geol. Surv., Final Eept., vol. iii, pt. i, 
p. 1864. 1895. 

CarboniferouB. PeDnsylvania. Included in Potlsville. 
Shirley sta^, Knight. Geol. 8oc. Am., Bull., vol. xi, pp. 385-.'!«7. 1900. 

Juraesic. Wyoming. 
Sho&l Creek linwilune Ki^irelmann 111 Geol. Surv., vol. iii, pp. 149, 15<t-lti4, 17-'>, 
2*0 1868 

Carbon f re ix III no In luded Coal Measures. 
Shoal Creikl estone Broad head Hi (ieol. Surv., vol. vi, p. 133. 1875. 

Carbi n f« uH III o h In 1 led Coal Measures. 
Shoal Greek 1 n «»<lone E >teln an li-con. Geol. of III., vol. ii, p. 76; vol. iii, p. 488, 
1882 

Carbonife o le III no s In I ded n Coal Measures. 
Shoal C eek I nesttn \\ rtl en III Geol. Surv., vol. vii, p. 11. 1883. 

Carbo fer( s III o In luled n Coal Meaaures. 
Shoal Creek I n estone H II T xaa eol Surv., Ut Ann. Kept., pp. 129-130. 1890. 

Creta -eo Texas In lu led \\ ashita division of Comanche sertef. 
Mhoal C etk I to H 11 ( wl Sx Am., Bull., vol. v, pp. 298, 319. 1894. 

Cretacw T a 

Shoal LI reek limestone, Hill and Vaughau. U.S. Geol. Surv., 18th Ann. Kept., pt. ii, 
pp. 237-238. 1898. 

Cretaceous. Texas. Included in Washita division of Comanche eeriee. 
Bhoo Fly beds, Diller. Geol. Soc. Am., Bull., vol. iii, p. 372. 1892. 

Carboniferous (?). California. 
8huii^tmui.ea shale, Beeile. Kan. Acad. Sei., Trans., vol. iv, p. 29. 1898. 

Carboniferous. Kansas. lnclude<l in base of Wabaunsee formation. 
Shungauunga shalea, Beede. Kan. Acad. Sci., Trans., vol. xvi, pp. 78-79. 1H99. 

('arboniferous. Kanstas. 
Shushitna slates, Kldridge. U. S. Geol. Surv., 29th Ann. Kept., pt. vii, pp. lS-16. 
1900. 

Alaska. 
Shuswap series, Daw»)n. Can. Geol. Surv., new sor., vol. iv, pp. 29B, 3IB. 1890. 

Archean. British Columbia, Canada. 
Shuswap series, Dawson. Geol. Soc. Am., Bui)., vol. Ii, pp. IS.";, 168, 170. 1891. 

Archean. Canada. 
Shuswap series, McConnell. Can. Geol. Surv., new ser., vol. vii, p. 3:JC. 1896. 

\rchean. Canada. 
Shuswap series, McConnell. Can. Geol. Surv., now ser., vol, x, p. 30A. 1898. 

Brilish Columbia. 
Siemo slate, Van Hise and Bayley. I'. S. (ieol. Snrv., 15th .\on. Rept., p. 554. 
'89.5. 

Algoiikian. Lake Su]jerior region. Included in Ixiwer Marquette series. 
Sianio elate. Van Hise. U. S. Geol. Surv., Mon., vol xxviii, pp. 313-327. 1897. 

Algonkian. Michigan. Includeil in Lower Marquette series. 

d Wad^worth. Harvard Coll. Mua.Comp. Zool., Bull., vol. vii, 
1884. 

B, Jukes. <ien. Kept, of Geol. of Newfoundland, p. 51 et seq. 

md land- 
Murray. Geol. of Newfoundland, p. 146. 1881. 
indland 



WEEKS] 8Hmj:R8VJLLE 8IMILKAMEEN. 375 

Signal Hill sandstone, "Walcott. Geol. Soc. Am., Bull., vol. x, p. 219. 1899. 

Algonkian. Newfoundland. Included in Avalon terrane. 
Siliceous beds, Safford. Am. Jour. 8ci., 2d ser., vol. xii, p. 369. 1851. 

Devonian (?). Tennessee. Included in Siliceous group. 
Siliceous group, Safford. Am. Jour. Sci., 2d ser., vol. xii, pp. 359-361. 1851. 

Silurian (?). Tennessee. Includes Siliceous beds, Cherty limestone. 
Siliceous or sandy limestone, Safford. Am. Jour. Sci., 2d ser., vol. vii, p. 356. 1861. 

Silurian. Tennessee. 
Siliceous group, Safford. Geol. Reconn. in the State of Tenn., 1st Rept., p. 169. 1856. 

Carboniferous. Tennessee. 
Siliceous group, Safford. Geol. of Tenn., pp. 338-361. 1869. 

Silurian. Tennessee Included in Lower Carboniferous. Exact syn. Siliceous 
stratum. Part. syns. Keokuk, Burlington, and St. Louis limestone. 
Siliceous group, Smith. Ala. Geol. Surv., Rept., 1875, pp. 26, 100, 119. 1876. 

Carboniferous. Alabama. Included in Subcarboniferous. 
Siliceous group. Upper, Smith. Ala. Geol. Surv., Rept., 1877, 1878, pp. 14, 21. 1879. 

Carboniferous. Alabama. Includes St. Louis or Coral limestone. 
Siliceous group, Lower, Smith. Ala. Geol. Sur\'., Rept., 1877, 1878, p. 13. 1879. 

Carboniferous. Alabama. Includes Keokuk, Burlington, and Barren group. 
Siliceous, Upper, McCalley. Ala. Geol. Surv., Rept, 1879-1880, pp. 76, 88, 101, 109, 
127, 132, 143, 149. 1881. 

Carboniferous. Alabama. Included in Subcarboniferous. Exact syn. St. Louis. 
Siliceous group, Stevenson. Am. Phil. Soc, Proc, vol. xix, pp. 231, 242. 1881. 

Carboniferous. Virginia. Included in Upper Carboniferous. 
Siliceous dolomite and chert, McCalley. Ala. Geol. Surv., Rept. on Valley regions, 
pt. ii, pp. 44-47, 116-118, 192-199, 256-264, 314-336, 456-464, 486-496, 616-621, 
593-639, 713-725, 769-793. 1897. 

Silurian. Alabama. Included in Lower Silurian. Exact syn. Knox dolomite and 
chert (including Hayes' Upper Connesauga). 
Sillery formation, Logan. Can. Geol. Surv., 1843-1863, pp. 225-297. 1863. 

Lower Silurian. Canada (eastern). Included in Quebec group. Exact syn. 
Chazy (?). 
Sillery division, Richardson. Can. Geol. Surv., Rept. 1863-1866, pp. 37-43. 1866. 

Lower Silurian. Canada (Eastern). Included in Quebec group. 
Sillery, Hunt. 2d Pa. Geol. Surv., Rept. E, pp. 112-116. 1878. 

Cambrian. Canada. 
Sillery formation. Ells. Can. Geol. Surv., new ser., vol. iii, pt. ii, pp. 26K-84K, 
89K-93K. 1889. 

Cambrian. Canada. Included in Quebec group, Cambro-Silurian. Includes 
Upper and Lower Sillery. 
SiUery, Ells. Geol. Soc. Am.,»Bull., vol. i, p. 466. 1889. 

Cambrian. Canady . Included in Quebec group. 
Silver Lake shale, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 30. 1898. 

Carboniferous. Kansas. 
Silveria formation, Hershey. Am. Jour. Sci., 4th ser., vol. ii, pp. 324-330. 1896. 

Pleistocene. Illinois. Exact syn. Kansas. 
Silveria formation, Leverett. U. S. Geol. Surv., Mon., vol. xxxviii, pp. 111-118, 1899. 

Pleistocene. Mississippi Valley. 
Similkameen beds, Dawson. Can. Roy. Soc, Proc and Trans., vol. vii, sec. iv, 
pp. 75-91. 1890. 

Tertiary. British Columbia. Included in Miocene. 
Similkameen beds, Dawson. Can. Roy. Soc, Trans., vol. viii, sec. iv, pp. 75-91. 
1891. 

British Columbia. 



376 NORTH AMERICAN GEOLOGIC FORMATION NAME8. Ibull.191. 

Similkameen formation, Russell, U, S. Geol. Rurv., 20th Ann. Kept, pt. ii, pp. 114- 
117. 1900. 
Cretawoua. WashinjttOD. 
SinunoiiB Bluff bedH, Dall. U. B. (ieol. Surv., Iflth Ann. Bept.,pt. ii,p.336. 1898. 

PleiBWM.'ene. South Carolina. 
Bioux quartzite, Hayden. Am. Jour. Sci., 2<l eer., vol. xliii, pp. lS-22. 1867. 

Huronian. South Dakota. 
SioHK quartzile, White. Iowa (ieol. Surv.. vol. i, pp, 167-171. 1870. 

Archean. Iowa. Included in Huronian. 
Sioux quartzite, Keyes. Iowa Geol. Surv., vol. i, p. 17. 1893. 

Archean. Iowa. 
Sioux quartzit*. Van Hise. Inl. Cong, of Geol., 5th Seas., pi. xiv. 1693. 

Algonkian. I^ke Superior region. Included in Huronian. 
Sioux quartzile, Beyer. Iowa Geol. Surv., vol. vi, p. 111. 1896. 

Archean(7). Iowa. Includtnl in Pre-CretareouH. 
Sioux quartzito, Beyer. Iowa Geol. Surv., vol. vi, pp. 71-112. 1897. 

Algonkian. Iowa. 
Sioux quartzite. Wilder. Iowa Geol. Surv., vol. x, p. 98. 1900. 

Algonkian. Iowa. 
Skaueateles nhale. Hall. Am. Jour. Scl., lat eer., vol. xlii, p. 57. 1842. 

Devonian. New York. Included in Ludlowville group. 
Skiumemunk conglomerate, Darton. Geol. Soc. Am,, Bull., vol. v, pp. 367, 371. 
1894. 
Devonian. New York, New Jersey. Included in Middle Devonian. 
Skunnemunk confclomerate, Riee. N. Y. State (ieol., 15th Ann. Sept., vol. i, p. 404. 
1897. 
Devonian. New York. 
Skwentna series. Spurr. U. S, Geol, Surv., 20th Ann. Bept, pt. vii, pp. 149-152, 
180. 1900. 
JuratriaB. Alaiikv.. 
Smalls Brook limestone, Anr.., Bnt. Asaot. Adv. .Sci., Rept.. 1899, p. 756. 1899, 

Carl)oniferoHi', Nova Si'otia. 
Smelt Brook Hhalet-, Ami, Brit, Afwoc. Adv. Sei., Rept., 1899, p. TM. 1899. 

Carboniferotia. Nova Scotia, 
Smelt Br<jok formation, Ami. Can. Re<'. Si-i., vul, viii, pp. 162-163. 1900, 

Carbon if eroiiH. Canada, Included in Neo-Curl)oniferouii. 
Smith Biver lake tals, Wet-d. U. S, Geol. Surv,, Geol. Atlas of U. S., Folio Na 56. 
1899. 
Included in Neoi'ene. Montana. 
Smith River lake bele, Wee.1. U. S, Geol. Surv.. Geol. Atlas of U. S., Folio No, 66. 
1899, 
Montana. Include<l in Neocene. 
Smithfleld limestone. Shaler, Woodworth and Foerate. U. S. Geol. Surv., Mon., 
vol. xsxiii, p. 107. Mm. 
Algonkian. Rhode Island. Includeil in Blackatone seriee. 
Smoky Hill chalk, Cragin, C.>\o. Coll, Stii.l., vol. vi, p. 51. 1896. 
Included in Niobrara, Upixr formation, 
liston. Kan. Univ. Quart., vol. iv, p, 251. 1896. 
Kanwis. Included in Niobrara. Kxact syn, Pteranodon beds. 
an. Kan, L'niv, Geol. Surv., vol. ii, pp. 220-221. 1897. 
ICansas. Inclu<le<l in Niobrara. Exact syn. Pteranodon beds. 
Datrson. Can, Geol. Surv., Rept,, 1879-80, pp. H5B, 125B. 

Columbia, Included in ('idorado group. Exact eyn. Uppo" 



WEEKS.] 8IMILKAMEEN SPHINX. 377 

Smoky River shales, Dawson. Am. Jour. Sci., 3d ser., vol. xxi, p. 392. 1881. 

Cretaceous. Canada. Exact syn. Pierre. 
Smoky River shales, McConnell. Can. Geol. Surv., new ser., vol. v, pt. i, pp. 50D, 
53D-64D. 1893. 

Cretaceous. Canada. Included in Montana group. 
Sneedville limestone, Safford. Geol. Reconn. of the State of Tenn., Ist Rept., p. 157. 
1856. 

Tennessee. Included in Dyestone and Gray limestone group. 
Sneedville lime8tone(?), Safford. Geol. of Tenn., p 312. 1869. 

Silurian. Tennessee. Included in Niagara group. Exact syn. Meniscus limestone. 
Snyder Creek shales. Mo. Bur. Geol. and Mines, Rept. on Structural and Economic 
Geology, p. 153. 1900. 

Missouri. Devonian. 
Sockanosset sandstones, Shaler, Woodworth and Foerste. U. S. Geol. Surv., M'on., 
vol. xxxiii, p. 163. 1899. 

Carboniferous. Rhode Island. Included in Cranston beds. 
Soldier Creek shales, Beede. Kan. Acad. Sci., Trans., vol. xv, p. 30. 1898. 

Carboniferous. Kansas. 
Sooke beds, Merriam. Univ. of Cal., Dept. of Geol., Bull., vol. ii, p. 106. 1896. 

Tertiary. British Columbia. Included in Neocene. 
Sooke beds, Dall. U. S. Geol. Surv., 18th Ann. Rept., pt. ii, p. 338. 1898. 

Tertiary. British Columbia. Included in Miocene. 
Sopchoppy limestone, Dall and Harris. U. S. Geol. Surv., Bull. No. 84, p. 119. 
1892. 

Tertiary. Florida. 
South CarroUton limestone, Norwood. Ky. Geol. Surv., new ser., vol. iv, pp. 296- 
297. 1878. 

Carboniferous. Kentucky. Included in Coal Measures. Exact syn. Madisonville 
limestone(?). 
Soutli Mountain gneiss, Hall. 2d Pa. Geol. Surv., Rept. D^, pt. i, pp. 215-255. 
1883. 

Archean. Pennsylvania. 
Soutli Valley HiU mica schists. Hall. 2d Pa. Geol. Sur\., Rept. C«, pp. 31-33. 
1881. 

Pennsylvania. Exact syn. Hudson River group. 
South Valley Hill slate, Lesley. 2d Pa. Geol. Surv., Final Rept., pp. 199-204. 1892. 

Cambrian. Pennsylvania. Exact syn. Primal Lower slate. 
Spadra stage, Stevenson. N. Y. Acad. Sci., Trans., vol. xv, p. 51. 1896. 

Carboniferous. Arkansas. ^ 

Sparry limestone, Emmons. Agric. of N. Y., vol. i, pp. 72-74. 1846. 

New York, New England. Included in Taconic system. 
Sparry limestone, Dana. Am. Jour. Sci., 3d ser., vol. xiii, pp. 343-414. 1877. 

Silurian. Vermont. Included in Eolian limestone. Exact syn. Trenton. 
Sparta sands, Vaughan. U. S. Geol., vol. xv, p. 225. 18