UC-NRLF LIBRARY OF Sfe A. KOFOID. Cost., T7 THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA PRESENTED BY PROF. CHARLES A. KOFOID AND MRS. PRUDENCE W. KOFOID THE GEOLOGISTS TRAVELING HAND-BOOK. A]ST AMEEIOAN GEOLOGICAL RAILWAY GUIDE, GIVING THE GEOLOGICAL FORMATION AT EVERY RAILWAY STATION, WITH NOTES ON INTERESTING PLACES ON THE ROUTES, AND A DESCRIPTION OF EACH OF THE FORMATIONS, BY JAMES MACFAKLANE, PH. D., AUTHOE OP "THE COAL-BEGIONS or AMEBICA," AND ONE OF THE COMMISSIONERS OF THE SECOND GEOLOGICAL STTBTEY OF PENNSYLVANIA, WITH THE CoSPEBATION OF THE STATE GEOLOGISTS, AND OTHEB SCIENTIFIC GENTLEMEN. £U.Q NEW YORK: D. APPLETON AND COMPANY, 649 & 551 BROADWAY. 1879. COPYRIGHT BY JAMES MACFAELANE, 1878. THE OBJECTS AND USES OF THIS WORK. 1. FOR THOSE WHO ARE NOT GEOLOGISTS. The United States are intersected by numerous railroads leading in all directions, and nearly every one has occasion more or less to travel on them for considerable distances. In these railway journeys no person who has the least power of observation can fail to notice the peculiarities in the scenery and the great variety in the formations of rock to be seen in the railway cuts and cropping out on the hillsides. If we always had a professor of geology for our traveling companion, we would be glad to learn from him what these various formations of rock are, what place they occupy in the series of strata that are visible on the earth's surface, and their mineral and other productions ; also at what other localities the same rocks occur, and whether they are entirely new to us or the same we have seen elsewhere. This work is a substitute for the supposed traveling professor of geology, giving in a small space the names of the geological formations which occur along the lines of the railroads, and in another part of the book is to be found a plain but full description of each of them. There are also foot notes directing attention to interesting geological places and objects on the routes of the railroads. One object of the work is to teach persons not versed in geology something of this science during the tedious and unprofitable hours of traveling, without study, not as in a text book, but by pointing to the things themselves as seen at railway stations and through the windows of a railway car. No person could be so stupid as to travel all over the United States without learning the name of a single state or city through which he passes, yet how few persons know even the names of the geological formations on which they have spent their lifetimes. Every one is taught geography, and there is scarcely a child of sufficient age who cannot tell the name of the town, county and state in which he lives. But geology, which is just as well worth knowing, is neglected, and there is but little opportunity for learning any thing practically in regard to it from those about us. This is not owing to a want of a desire for knowledge, but to a want of instruction in this science, and of the practical application of what is learned by adding local geological information in a handy, cheap and accessible form, and this, which no other work affords, it is the aim of this book to furnish. There are some kinds of knowledge too that cannot be obtained from books, but must be gathered by actual observation. The inspection of a formation in nature, which is pointed out to you, will teach you more in regard to it in a few minutes than you could learn from lectures or from reading books in as many hours, and the lesson so received will be better remembered. This book is intended as an intelligent guide to such observations. It tells you where the various formations are, and you can then see for yourself in traveling what they are. M365025 THE GEOLOGISTS TRAVELING HAND-BOOK. How lonely would be a journey on which you would see not a single face that you know, and how different it would be if every one you meet were an old friend. So to the tourist new charms must be given to scenery, however attractive it may already be, if he knows something about its geology. The rocks, mountains, valleys and plains, although he sees them for the first time, are old friends in perhaps new and interesting forms. He meets them with a certain pleasure, for he understands what he sees and he is given the materials for many a happy hour of quiet and profitable reflection at home, on what he has seen on his railway journey. 2. FOR GEOLOGISTS. But while the book is thus intended primarily as a series of object lessons for those to whom geology is yet a novelty, for the purpose of exciting an interest in, and which may ripen into a love for the science, it is believed that, being in a more convenient form than geological maps, and as no other work has attempted what is here done, all geologists, and especially students, will find it a most useful hand book on their railway journeys as well as for reference at home. It will be useful in laying down the geology in colors on any map which gives the railroads. Accurate geological maps can thus be made without expense, and there is no better exercise for students. It will also be invaluable in selecting a route of travel for geological study or for pleasure, and no geologist should make an excursion over new ground without this guide. It is a scientific catalogue of the great panorama that passes with its ever shifting scenery before the eyes of the American railway traveler, and even an artist finds a catalogue of a picture gallery very necessary. No geologist need be told that it embraces the result of a vast amount of learning, labor and research in a very small compass, and a minuteness of local geology for which he might ransack libraries in vain, and which no one man could possibly furnish. Many men for many years have devoted the finest talents in America to the study of the geology of these states, and all have contributed by their published reports, or by direct original contributions to this work, portions of the knowledge which is here indexed, otherwise it would not be becoming for the author to say so much in its praise. In order that the guide might be as accurate as possible the assistance of the state geologist of each state, or that of some scientific gentleman best acquainted with its local geology, has been invoked to revise and correct the list of formations found along the railroads. Without a single exception, and with characteristic devotion to the cause of science, *' this aid has been very cheerfully and promptly rendered, and in not a few instances, where the necessary information was only in the knowledge of these gentlemen, they have filled in the geology from original sources not yet published. Due credit is given to all contributors in the notes of the proper chapter. The general accuracy of the book can be relied upon as to the formations of each locality as they were understood at the time of its publication, and it may be regarded as in harmony with the latest results of geological research. If errors are found, consider the great number of railroad stations and you will wonder there are so few. _ *Scientific men freely give the results of their labors to the world, expecting only in return to enjoy the consciousness of having added by their investigations to the sura of human knowledge, and to receive the credit to which they might justly entitle them. PROF. JOSEPH HENRY. OBJECTS AtfD USES OF THIS WORK. 3. FOR USEFUL, PRACTICAL PURPOSES. To those who take only utilitarian views and care nothing for pure science, and to all those in any way interested in the country, a means is here furnished for ascertaining the natural advantages or disadvantages of any district -where there is a railroad, for it is now pretty well known to all intelligent persons that the capabilities or resources of a country, what it is and what it can become, depend chiefly on its geology. No one in our day can doubt, that there is a definite and orderly arrangement of the rocks, that it is only in certain rocks that certain useful materials and minerals are to be obtained, and that the soil of each formation has a certain fixed value for agriculture. It was long ago shown that a geological map of England, is a map also of the distribution of its manufactures. Even the kind of people inhabiting a district, often depends on its geology. A considerable portion of the work of geologists, is devoted to tracing out the distribution of the various formations as they come out from beneath one another, and spread over the face of the country. This book is made up of a minute tabular statement or division of all places on the American railways, into classes, some of which yield useful materials or pro- ductions peculiar to them. It points out the limits to be observed in searching out new locations producing any material. Besides, if accompanied by a correct scientific knowledge of the country, it will make any man's discovery of anything useful available to his neighbors in hundreds of other places, over the whole region covered by the same formation. The physical structure of a country being then, the means by which we can learn the range and distribution of useful materials, a strict attention to fossils is necessary, to enable us to determine the relative position of rock groups, each group, within certain limits, holding its own peculiar fossil forms, and certain economic products being confined, over wide areas, either wholly or principally to certain rocks. Many persons, ignorantly confounding the means with the end, think geologists are good authorities upon fossils, but not as to the useful properties of the formations. Sir William E. Logan, the great Canadian geologist, in answer to this objection, once said : " I am not a naturalist ; I do not describe fossils, but use them. They are the geologist's friends, who direct him in the way to what is valuable. To get the necessary information from them, you must be able to recognize their aspect, and in order to state your authority, you must give their names. Some of them tell of coal — they are cosmopolites ; while some give local intelligence of gypsum, or salt, or building stone. One of them helped us last year to trace out, in Canada, upwards of fifty miles of hydraulic limestone." But it is not practicable for ordinary readers to understand the difficult science of paleontology ; all they can expect to know are the results as ascertained by professional geologists, and those results are given in this little book, for every place on every railroad in America. There are many other things that might have been given, especially the structural geology of each State, geological maps, more minute lists of elevations and general physical geography, but the book contains enough for one little volume to be carried about on railway journeys. TOWANDA, Pa., 1878. JAMES MACFARLANE. Business Office, Syracuse, N.Y. TABLE OF CONTEXTS. TABLE OF CONTENTS. PAGE. Objects and Uses of the Work, - 3 Dana's Table of Formations, - 8 Descriptions of the Formations — 9 1 a. Laurentian, 10 Ib.Norian, 11 1 c. Huronian, 12 1 d. Montalban, 13 2 a. Acadian, 14 2 b. Potsdam, - 14 3 a. Calciferous, 16 3 b. Quebec, 16 3 c. Chazy, 17 3 c. St. Peter's, 17 4 a. Trenton, 18 4b. Utica, 19 4 c. Hudson Eiver or Cincinnati, - - 20 5 a. Medina, 22 5 b. Clinton, 23 5 c. Niagara, 24 6. Salina, --25 7. Lower Helderb erg, - 28 8. Oriskany, 28 9. Upper Helderberg, 29 9 a. Cauda-galli, - ..... 29 9 b. Schoharie, 29 9 c. Onondaga, ------ 29 9 d. Corniferous, 30 10 a. Marcellus, 30 10 b. Hamilton, 31 10 b. Tally Limestone, .... 32 10 c. Genesee, 33 11 a. Portage, 34 11 b. Chemung, 35 12. Catskill, 36 13 a. Lower Sub-Carboniferous, - - 37 13 b. Upper Sub-Carboniferous, - - 38 14 a. Millstone Grit, .... 39 14 b. & c. Lower and Upper Coal Measures, 39 15. Permian, 40 16. Triassic, 41 17. Jurassic, ------ 43 18. Cretaceous, 43 19. Tertiary, - 44 20. Quaternary, 45 Eemarks on the Descriptions, - 48 Directions for Using the Guide, - - 49 Dana's Table of Formations, - 50 T. S. Hunt's Table of Formations, - - 51 Geological Railway Guide, Eastern- Canada, 52 Table of New England Formations, - 56 Maine, 57 New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, - New York, - New Jersey, - Pennsylvania, Western- Ohio, - Michigan, - Indiana, Illinois, Wisconsin, - Minnesota, Dakota, Iowa, Missouri, Far- Western- Kansas, - Colorado, - Nebraska, - Wyoming, Utah, - - Nevada, California, Washington, Oregon, South-Eostern— Delaware and Eastern Maryland, Maryland and District Columbia, - West Virginia, - Virginia and West Virginia, - - - 109 - 115 - - 122 • - 129 - - 139 • - 145 - - 147 • - 148 - - 154 - - 159 • - 162 - - 163 • - 166 167 and 168 - 167 - 169 - 173 - 174 175 - 177 179 North Carolina, 186 South Carolina, 187 Georgia, 188 Florida,- 208 gouth-Western- Kentucky, 191 Tennessee, 196 Alabama, 200 Mississippi, 204 Louisiana, 205 Arkansas,- - ' - - - - - 206 Indian Territory, 208 . . .... - - - 207 Territories without Railways- Alaska, Arizona, Idaho, Montana, New Mexico, .... INDEX TO THE EAILWAY GUIDE OF EACH STATE. Index to the Railway Guide of each State, etc. PAGE. 1— Alabama, 200 2— Alaska Territory, (without railways), - 3— Arizona Territory, (without railways),- 4— Arkansas, 206 5— California, 169 6 — Canada, Dominion of - - - - 52 7— Colorado, 162 8— Connecticut, 65 9— Dakota Territory, 147 10— Delaware, 174 11— District of Columbia, - - - - 175 12-Florida, 208 13— Georgia, 188 14— Idaho Territory, (without railways), 15— Illinois, 129 16— Indiana, 122 17— Indian Territory, 208 18— Iowa, 148 19— Kansas, 159 20-Kentucky, - - - - - - 191 21— Louisiana, 205 22-Maine, ....... 57 23— Maryland, .... 174 and 175 24— Massachusetts, 61 25— Michigan, 115 PAGE. 26— Minnesota, 145 27— Mississippi, 204 28— Missouri, 154 29— Montana Territory, (without railways), 30— Nebraska, 163 31— Nevada, 167 32— New Hampshire, 58 33— New Jersey, 89 34— New Mexico Terr'y, (without railways), 35— New York, 67 36— North Carolina, 186 37— Ohio, - - 38— Oregon, - 39— Pennsylvania, 40—Rhode Island, - 41— South Carolina, 109 173 43— Texas, .... 44- Utah Territory, - - 45— Vermont, - 46— Virginia, - - - 47— Washington Territory, 48_West Virginia, 49— Wisconsin, - 50— Wyoming Territory, - 64 187 - 196 207 167 and 168 '59 - - 179 172 177 and 179 166 Index to the Railroads is at the end of the volume. THE GEOLOGIST'S TRAVELING HAND-BOOK. Prof. J. D. Dana's Table of the Geological Formations (1878). Systems or Ages. GROUPS OB PERIODS. FORMATIONS OR EPOCHS. AMGanf 20. QUATERNARY. 20. Quaternary. Age of Mammals. 19. TERTIARY. 19 c. 19 b. 19 a. Pliocene. Miocene. Eocene. Reptilian Age, 18. CRETACEOUS. 18 c. 18 b. 18 a. Upper Cretaceous. Middle " Lower " 17. JURASSIC. 17. Jurassic. 16. TRIASSIC. 16. Triassic. Carboniferous. 15. PERMIAN. 15. Permian. 14. CARBONIFEROUS. 14 c. 14 b. 14 a. Upper Coal Measures. Lower " » Millstone Grit. 13. SUBCARBONIFEROUS. 13 b. 13 a. Upper Subcarboniferous. Lower " Devonian, . or Age of Fishes. 12. CATSKILL. 12. Catskill. 11. CHEMUNG. 11 b. 11 a. Chemung. Portage. 10. HAMILTON. 10 c. 10 b. 10 a. Genesee. Hamilton. Marcellus. 9. CORNIFEROUS. 9 c. 9 b. 9 a. Corniferous. Schoharie. Cauda Galli. Invertebrates. Upper Silurian. 8. ORISKANY. 8. Oriskany. 7. LOWER HELDERBERG. 7. Lower Helderberg. 6. SALINA. 6. Salina. 5. NIAGARA. 5 c. 5 b. 5 a. Niagara. Clinton. Medina. Silurian, or Age of Lower Silurian. 4. TRENTON. 4c. 4 b. 4 a. Cincinnati. Utica. Trenton. 3. CANADIAN. 3 c. 3 b. 3 a. Chazy. Quebec. Calciferous. 2. PRIMORDIAL OR CAMBRIAN. 2 b. 2 a. Potsdam. Acadian. 1. ARCHAEAN. 1 b. 1 a. Huronian. Laurentian. The numbers and letters of this table are equivalents throughout the book. attached to the same formations or their DESCRIPTIONS OF THE GEOLOGICAL FORMATIONS. INTENDED FOR RAILWAY TRAVELERS WHO ARE NOT VERSED IN GEOLOGY. All the rock-formations which appear on the surface of the globe, have been scientifically classified by geologists, according to the order in which they are found lying one upon another, and by the fossils they contain, and for our object may be conveniently included in twenty divisions or groups. In this work, the table of the names of the formations, groups and systems, published by Prof. J. D. Dana in his "Manual of Geology" and in his " Text Book of Geology," has been taken as the general basis, by the geologists of many of the states who have assisted in preparing the following guide, but other valuable tables and especially one arranged by Dr. T. Sterry Hunt, preceding the chapter on Canada, and a list for each state at the beginning of the proper chapter, are also given. Numbers are attached to the names of the groups wherever they occur, making 20 in all. The subordinate members of each group, which are called formations, have the same number, but these sub-divisions are distinguished by the addition of small letters, a, b, c, etc., thus making in all 40 sub-divisions. By this means, the reader, although not familiar with geological tables, is at once enabled to see to what part of the general series any formation belongs, number 1 designating the oldest and number 20 the upper and last formed of all. Wherever the formations are found, they occur in the order as they are numbered, but the series in nature is never full, and in almost every locality one or more members of it are wanting. The true method by which each of the great stratified formations is distinguished is by its own characteristic fossils, but these descriptions, having been prepared for travelers, are confined to the general aspect of the rocks as seen in passing them on the railways. They are intended to be popular rather than scientific, informing the reader what the formations are, what they look like, and their useful and valuable characters, qualities, and productions. It must also be borne in mind that this is a country of vast dimensions, and that the formations undergo important changes in their lithological character from place to place. Paleontology, and other interesting branches constituting the purely technical portion of the subject, are omitted. That ground has been well covered by all of the excellent illustrated text-books on geology, and one object of this work is to induce persons to take up their study. Results only are here given, not the method, by which they are attained. The thicknesses of the formations are sometimes stated, but as this might mislead the unprofessional reader, it should be observed, that the width of the surface occupied by a formation depends on the amount of dip in the beds. A group less than a hundred feet thick, lying horizontally, may cover several miles, while one of several thousand feet thick, if lying at a high angle, is goon passed over. 10 THE GEOLOGIST'S TRAVELING HA^D-BOOK. I. EOZOIC, (ARCH/EAN, AZOIC.) I. PRIMARY OR CRYSTALLINE ROCKS. The late investigations of American geologists have enabled them to establish several divisions in the crystalline stratified rocks, which were originally called Primary or Primitive. The name Azoic, formerly given to the Primary rocks to distinguish them from the Paleozoic formations, has, since the discovery of Eozoon in the former, been exchanged for that of Eozoic. The designation Archaean or ancient rocks, is used by Professor Dana and others, and applies to the Primitive formations without distinction. Among those who have made the Primitive or crystalline rocks a special subject of study for many years, no one is more eminent than Dr. T. Sterry Hunt, and as no proper account of the four groups into which he divides them ; — namely, 1 a. Laurentian, 1 b. Norian, 1 c. Huronian, and 1 d. Montalban, has yet appeared, the following descriptions, which he has kindly furnished for this work, are a very valuable contribution to the science of geology. 1 a. Uaurentian, — The name of Laurentian was given in 1854, by the geological survey of Canada, to the ancient crystalline terrane which forms the chief portion of the Laurentide hills of Canada, and the Adirondacks of Northern New York. Throughout these areas the prevailing rock is a strong, massive gneiss, reddish or grayish in color, sparingly micaceous, but very often hornblendic. The predominance of this mineral occasionally gives rise to a nearly pure hornblende-rock, sometimes with a little intermixed feldspar. The gneisses are, for the most part, distinctly stratified, but occasionally the evidences of stratification are not very apparent, so that these rocks have often been designated granites. This series is distinguished by the absence of chloritic, talcose, argillaceous or micaceous schists. It includes, however, crystalline limestones, of which there are supposed to exist, on the Ottawa, three distinct formations in the Laurentian series, each of which is, in parts, according to Logan, more than 1000 feet in thickness. These limestones, which are generally coarsely crystalline, are often magnesian, and abound in foreign minerals, chief among which are serpentine, chondrodite, hornblende, pyroxene, magnesian mica, apatite and graphite. All of these occur both disseminated in the beds, and, aggregated with other minerals, in veins, or endogeneous masses. Associated with these limestones are often considerable beds of quartz-rock, sometimes garnetif erous. Great masses of magnetic oxide of iron are also found interstratified in this series. The measured thickness of the Laurentian gneisses, with their included limestones and other rocks, on the Ottawa, where the strata are nearly vertical in attitude, has been estimated at over 17,000 feet. Beneath these, known as the Grenville series, there is a great mass of granitoid gneiss, without limestones, and of undetermined thickness, called the Ottawa gneiss, which, it is conjectured, may not be conformable with the upper portions, but is, as yet, included in the Laurentian series. DESCRIPTION'S OF THE FORMATIONS. 11 In the Atlantic belt, considerable areas of Laurentian occur in Newfoundland, and probably in several parts of New England. A range of Laurentian rocks from the western part of Connecticut extends south westward, forming the Highlands of the Hudson, and making the South Mountain as far as the Schuylkill ; while a smaller range of the same, to the southeastward, forms the Welsh Mountain, in Pennsylvania. Little is known of the distribution of the Laurentian farther southward along the Atlantic belt, but the gneisses near Richmond in Virginia, and those of Roan Mountain, in North Carolina, are referred to this terrane. Large areas of Laurentian occur around Lake Superior, and farther west in the Rocky Mountains, where they form the crystalline rocks of the Colorado range in the east, and the Wahsatch in the west, and probably occur in many other parts of the region. To the Laurentian belong the gneisses of the "Western Islands of Scotland, those of Scandinavia and Finland, and large portions of those of the Alps. The limestones of the Laurentian contain the remains of a foraminiferal organism known as Eozoon Canadense, (Dawson) which has been found hi several localities in Canada, and also in Bavaria, and in Finland. Accompanying it are several other small forms, regarded as organic, and referred to the protozoa. 1 b, Norian, — The upper portion of the Laurentian series on the Ottawa river, was originally defined by the geological survey of Canada as consisting of a rock, gnessoid or granitoid in character, made up chiefly of labradorite, or related anorthic feldspars, but including also true gneisses and crystalline limestones, not unlike those already described hi the Laurentian. Subsequent studies hi Canada led to the conclusion that these rocks constitute a distinct terrane, resting unconforrnably upon the gneisses and crystalline limestones of the preceding series, and the two were respectively designated as Lower Laurentian, and Upper Laurentian or Labradorian. As the newer is very distinct from the older terrane, it has, however, been thought better to restrict the name of Laurentian to the latter. A series precisely similar to the upper one occurs in Norway, where, as in North America, it rests upon Laurentian gneisses, and where the name of norite has been given to the f eldspathic rock which is its chief characteristic. Hence the name of Norian, which has been chosen, in place of Upper Laurentian, as the designation of the terrane. It is conjectured, from, the fact that it has yet been found only in contact with the Laurentian, and from its including gneisses and limestones lithologically similar to those of the latter, that it is next in age. The norites consist, for the greater part, of anorthic feldspar, sometimes almost without admixture, but at other times accompanied by small portions of hornblende, of pyroxene or of hypersthene, constituting what has been called hypersthenite or hyperite. Red garnet, green epidote, biotite, and ilmenite are often present, and all of these minerals are generally arranged in such a way as to give a gneissoid structure to the rock. The texture is sometimes fine-grained and compact* and at other times more coarsely granular, and even granitoid, displaying great masses of anorthic feldspar, frequently opalescent, and varying in composition from auorthite to andesin'e. The colors of the norites vary from white, pale bluish or greenish to dark lavender or smoke-blue, or nearly black The characters of the associated gneisses and limestones, as already remarked, are similar to those of the Laurentian. Great beds of highly titaniferous iron ore abound in the Norian series. 12 THE GEOLOGIST'S TRAVELING HAKD-BOOK. The principal area of this terrane known in the United States is in Essex County, New York, where it covers several hundred square miles, and, although highly inclined, rests unconformably, according to Professor Hall, upon the Laurentian. It is well displayed upon the shore of Lake Champlain between Port Kent and Westport, and forms some of the the highest hills of the interior. A second large area of Norian occurs north of Montreal, where it is similarly related to the Laurentian, and passes below the Potsdam sandstone. Other localities along the valley of the St. Lawrence are at Chateau Eicher near Quebec, at Bay St. Paul, the Bay of Seven Islands, and on the River Moisie. Extensive areas of it also exist on the coast of Labrador. The same rock has been found on the east shore of Lake Huron, and in Wyoming Territory. Boulders of it are occasionally found along the eastern shores of Maine and Massachusetts, and also in northern New Jersey, whence it is conjectured that the Norian terrane may occur in the South Mountain. 1 c. Huron ian. — The name of Huronian was given, hi 1855, by the geological survey of Canada, to a great series of more or less schistose crystalline rocks, shoMTn to rest unconformably upon the Laurentian gneisses, on the north shores of the lakes Huron and Superior, and to make up a part of the Huron Mountains, on the south side of the latter. A similar terrane forms a great portion of the Atlantic belt in Newfoundland, in the province of Quebec, and in western New England, where these rocks have been described as the Green-Mountain series, and are traced southwestward along the Blue Ridge. Another range of the same stretches along the northwest side of the Bay of Fundy, and thence is traced, at points, along the coast of Maine, to eastern Massachusetts and Rhode Island. The rocks of this series are everywhere highly disturbed, often vertical, and have a thickness of many thousand feet. In this series, the gneisses of the Laurentian are represented by rocks consisting essentially of an admixture of orthoclase-feldspar and quartz, which frequently assumes the character of a jaspery petrosilex, becoming porphyritic by the presence of crystals of feldspar, and of quartz, in a compact base. In other cases, it becomes granular, constituting a eurite, and passing into a fine-grained gneissic rock, the colors being generally of some reddish or purplish tint. These petrosilex rocks, which resemble the halleflinta of the Swedish geologists, are sometimes schistose, and finely laminated, but at other times are compact, and almost destitute of stratification. The basic portions of this terrane are represented by varieties of greenstone (diorite or diabase) which are often chloritic, and pass by insensible degrees into chloritic schists, frequently with epidote. Steatites and dark colored serpentines also abound in parts of this series, besides what are commonly called talcose or nacreous schists, owing their peculiar characters to a soft hydrous mica, which is not unfrequently disseminated in very quartzose beds, and gives to such a schistose character. The limestones of this series are, for the most part, dolomitic, and often weather to a rusty yellow, from the presence of more or less carbonate of iron. These dolomites are sometimes replaced by crystalline magnesite. Portions of this terrane, including alike chloritic, dioritic and quartzose rocks, are conglomerate in character, frequently containing pebbles derived from the Laurentian, with others from unknown sources. The Huronian series abounds in ores of copper, chrome, nickel and iron. To it belong the specular and magnetic ores of northern Michigan ; while the ores of these same species hi southeastern Missouri are found in Huronian petrosilex-porphyries. These last are best seen in DESCRIPTIONS OF THE FORMATIONS. 13 the region just named, in the South Mountain in Pennsylvania, south of the Susquehanna, and along the eastern coasts of Massachusetts and New Brunswick. The Huronian rocks are penetrated in many cases by eruptive rocks, both granites and dolerites. A series of rocks, which the writer has referred to the Huronian, appears in parts of the British Islands, notably in Donegal, Ireland, in Anglesea, and in Caernarvonshire. The crystalline rocks which underlie unconformably the Lower Cambrian strata in South Wales, and to which the name of Dimetian has lately been given, seem, from the descriptions, to belong to the Huronian terrane. The great series in the Alps, called by the Italians the greenstone group, or pietn verdi, has both the lithological characters, and the geognostic relations, of the Huronian ; and the similar crystalline schists found in California, in the foot-hills of the Sierras, and in the Coast range, are probably to be referred to the same horizon. The gold-bearing veins of California are found both in these crystalline schists and in the eruptive granites. 1 d. Montalban, — This name was given, in 1872, to a great mass of crystalline schists, which are lithologically and geognostically distinguished from the Huronian, and are well displayed in the White Mountains (whence their name). They occupy large areas in New England, and constitute the gneisses and mica- schists of New York Island, of Philadelphia, Baltimore and Washington. A similar group of rocks is found at the summit of the Huronian series, in northern Michigan ; and from this, as well as from the facts observed on the Schuylkill, and many other places, they are believed to be younger than the Huronian, although some geologists have supposed them to be older. Similar rocks are traced south- westward from the Potomac, throughout the Blue Ridge, of which they form, in Virginia, North and South Carolina and Georgia, an important part, and are there gold-bearing. The gneisses of this series are distinguished from those of the Laurentian by being finer grained, and having white feldspar. They are, moreover, less firm, and more tender, often containing silvery mica, and pass by insensible gradations into the coarse mica-schists of the series, which are very unlike in aspect to the soft unctuous mica-schists of the Huronian. Hornblende prevails in many parts of the series, and the gneisses, by its predominance, pass into a bluish-black hornblende- rock, often thin-bedded. Noticeable among the basic members of the terrane, is the granular olivine or chrysolite-rock, which, often accompanied by enstatite, and by serpentine, appears to be interstratified in the micaceous and hornblendlc schists of the Montalban, hi North Carolina, and in Georgia. Crystalline limestones are found in this terrane, often in considerable masses, and resemble somewhat, in the presence of hornblende, apatite and graphite, the limestones of the Laurentian. The Montalban series exhibits beds and veins of iron-pyrites and copper-pyrites, in many localities, but the oxidized iron-ores which abound in the preceding series, are scarcely known in this. The fine-grained gneisses of the Montalban, are commonly, known in New England by the name of granites, but the series is also penetrated by great masses of true eruptive granite. The mica-schists of the se- ries are remarkable for the abundance of crystallized garnet, staurolite, chiastolite and cyanite which they contain ; these species, with the exception of the first, not being, so far as known, found hi the Laurentian series. The endogenous granitic veins, carrying muscovite, dichroite, spodumene, tourmaline, beryl, columbite, tinstone, and apatite, in the Atlantic belt, are chiefly, if not wholly, found in the Montalban series. T. STEERY HUNT. THE GEOLOGIST'S TKAYELING HAND-BOOK. 2-15. PALEOZOIC. 2-4. CAMBRIAN (OR LOWER SILURIAN) AGE. 2 a. Acadian. — This series is found at Braintree, in Massachusetts, at St. John, in New Brunswick, and at St. John, in Newfoundland. It includes one thousand feet or more of fossiliferous sandstone and shale, and according to Dr. Hunt, corresponds to the Menevian of Great Britain. It has only been found along the north-eastern border of the Atlantic belt. It is remarkable as a f ofesil- if erous rock below the Potsdam, which had, before its discovery, always been con- sidered as the lowest formation of that description on the continent. 2 b. Potsdam. — The Potsdam sandstone, was for a long time considered as the lowest sedimentary fossiliferous rock. It is usually of a purely quartzose character, generally gray, though often striped, and sometimes partially or entirely red. In places it appears as a conglomerate, but sometimes the enclosed masses are angular, showing them to be near their source. — Hall, N. Y. R, 27. It is a hard silicious sandstone, white, red, gray, yellowish, and frequently striped. Some strata of this rock are covered with the most beautifully characterized ripple-marks as perfect as if just formed on the sand of a sea-beach, while the rock is the most indurated kind of sandstone. Its lower portion is a granitic conglomerate, in which large masses of quartz, the size of a peck measure, are often enveloped ; they are rounded and water-worn, and held together by a finer variety of the same material. On the Canada slope, where the mass is 300 feet thick, it is wholly a conglomerate, made up of coarse materials. The part which is properly a sandstone, has two principal varieties, a close grained, sharp edged mass, with natural joints traversing it in two directions, but so closely wedged together that it is quarried with difficulty. This is the Keeseville variety, and that of Pa. and N. J. The other, the typical mass at Potsdam, is an even bedded and somewhat porous rock, at many places a distinct friable sandstone, in others a yellowish-brown sandstone, the particles of which are compacted together, so as to form a firm, even-grained mass, with the planes of deposition perfectly smooth and separable from each other, the layers being from two inches to four feet thick. At Potsdam quarries, a layer of 100 square feet may be raised and split into rails, six inches wide and ten feet long, or it may be broken into pieces the size of a brick, with even edges of fracture, and each layer may be separated into many. The color here is yellowish-brown, and a deep red variety occurs at Chazy, resting immediately upon the primitive rock. — Mather, 102. It is nowhere charged with mineral matter, either disseminated or in veins. The native copper of Lake Superior is hi an old trappean formation, and has no relation to the neighboring extensive formation of Potsdam. In an economical point of view, the Potsdam is unimportant as a depository of useful substances. DESCRIPTIONS OF THE FORMATIONS. 15 The general color of the stone at Potsdam is yellowish-brown, but the tint of each layer differs somewhat from those adjacent to it, so that the rock, upon the fractured edges, wears a slightly striped aspect. It is the finest quarry stone in the state, being so perfectly workable and manageable. — 360. It is an ex- cellent building material, holding mortar well, and makes a dry house. — 29. Under the Potsdam, and upon the primary rock, is the position of the specular and red oxide of iron.— V. 267. In Minnesota, the lower portion of the formation is 400 feet thick, and is hard and often vitreous, and usually of a brick-red color, with very distinct layers, often separated into slaty layers by partings of red shale, strongly marked with f ucoidal impressions, frequently ripple-marked and cracked. The upper part of the formation, there called the St. Croix sandstone, is white or buff in color, often friable, and constitutes a heavy bedded or massive sandstone of rounded quartzose grains.— N. H.Winchell. In Minnesota and Iowa, the Potsdam proper, omitting the St. Croix sandstone, is a friable, crumbling mass, of no value for building purposes except as sand, consisting of a pure silicious sand in minute grains, with a very slight amount of cementing matter. Unless protected by some more resisting rock above it the Potsdam appears in steep slopes, or low, gently swelling hills and mound-like eminences. Those portions which are hard and enduring are cemented by oxide of iron, and have a brown color. In Wisconsin, the Potsdam is 800 to 1000 feet thick, and has a much larger surface-development than elsewhere, as will be seen by the great number of railway-stations on it. It extends over 12,000 square miles, and contains many fossils not found in New York. Where the Potsdam in Wisconsin is on the surface, and not covered by drift, there is usually a loose, sandy soil, with a sparse growth of small oak and pine timber. This formation is one that has. been very properly allowed to retain its original name almost undisputed all over the United States, except that Professor Owen at first called it the LOWER SANDSTONE, in the North West to distinguish it from the 3 c., St. Peters or Upper Sandstone. In Michigan, the Potsdam is the red sandstone, which is emphatically the chief rock that appears upon the immediate coast of the whole south shore of Lake Superior, and forms the Pictured Rocks and the Falls of St. Marie. Here it is of inconsiderable thickness, but it regularly thickens in going westward. — Houghton, 4th R., 500. Some have referred the Lake Superior sandstone to the age of the Chazy, but the late studies of Rominger show that it is really of Potsdam age. The Chicago Tribune office building is of this Lake Superior sandstone, and the Court House at Milwaukee is another conspicuous specimen. In Pennsylvania, the Potsdam, is a compact, fine-grained, white and yellowish vitreous sandstone, containing specks of Kaolin. The Potsdam formation is supposed by some to Jbe represented in the Green Pond Mountain of New Jersey by a local deposit of coarse conglomerate, 3000 feet thick, but others deny that this mountain is Potsdam. It is less than 30 feet thick where it is seen rising from beneath the limestones of the Lehigh River, but increases in thickness westward and southward, until it comes to be represented in Tennessee by many thousand feet of alternate coarse and fine deposits. See Safford's Geol. R. of Tenn. 16 THE GEOLOGIST'S TKAVELING HAND-BOOK. 3 a. Calciferous. — This group embraces in New York three distinct masses as to character and position, and these alternate and intermix with each other. The first is silicious, compact, and may probably be the continuation of the Potsdam sandstone. The second is a variable mixture of fine, yellow, silicious sand and dolomite or magnesian carbonate of lime, which, when fractured, presents a fine, sparkling grain. It is in irregular layers, which have a shattered appearance, from numerous cracks, the parts being more or less separated from each other. This is the mass from which the name Calciferous sandrock was derived. The third is a mixture of the dolomitic material, which is usually yellowish, very- granular when fresh broken, and of a compact limestone, which resembles the Birdseye. The action of the weather gives these layers the appearance of Gothic fret-work, and the color becomes a dark yellow-brown. — V 21. As its name indicates, it is a sandy magnesian limestone, but it is not destitute of beds of pure limestone. The mixture of a variety of mineral matter causes the rock to weather unequally; hence it is often rough externally, portions of the silicious part standing out in relief. There are two quite uniform characters which distinguish the Calciferous, viz : A fine crystalline structure intermixed with earthy matter, and numerous small masses of calcareous spar. — E. 105. Great numbers of quartz crystals are found in the cavities of this formation, many of them very perfect as to form and transparency. — V. 30. In the Mississippi basin this formation is called the LOWER MAGNESIAN LIMESTONE, to distinguish it from the Upper or Trenton limestone. The eastern name, Calciferous or lime-bearing sandrock, does not apply, as it is almost free from sand. As its western name indicates, it is a dolomite or magnesian limestone, and makes an excellent lime for building-purposes. It usually contains about one equivalent or forty-five per cent, of carbonate of magnesia. This limestone forms the summits of the bluffs of the Mississippi; it supports high table-lands that extend back from the river, and forms prominent angles to the summits of the bluffs on either side of that river. These even and heavy layers are those usually quarried for building-stone. D. D. Owen gives descriptions of the picturesque character of the landscape in the region of the Upper Mississippi, and especially the striking similarity which the rock exposures present to ruined structures, and his report is illustrated by beautiful engravings showing the castellated appearance of the cliffs of the Lower Magnesian limestone on the Iowa River. In Pennsylvania it is a coarse, gray calcareous sandstone, containing cavities enclosing very minute crystals of quartz and calcareous spar. 3 b. Quebec.— This group was divided by Sir W. E. Logan into three parts, consisting, in the ascending order, of 1. Levis, 2. Lauzon, and 3. Sillery. But it afterwards appeared that the section on which this order was based was an inverted one, and that the Sillery was the oldest. The Quebec group is about 7,000 feet in thickness. The lowest, or 1. SILLEEY subdivision, is a massive greenish sandstone, fine and coarse grained, frequently a conglomerate of white quartz pebbles, and is 2,000 feet thick. The sandstones are sometimes slightly micaceous, with small scales of green and black shale. They usually present massive beds, and at Sillery some of the layers are quarried and used for building purposes at Quebec. The 2. LEVIS, or middle portion of the Quebec, is 1400 feet thick. It is named from Point Levis, opposite Quebec, and consists chiefly of fossiliferous limestone-conglomerates. The 3. LAUZON or upper DESCRIPTIONS OF THE FORMATIONS. 17 member, as the order is now understood, is 1,839 feet thick, of black graptolitic slates. The Quebec group, however, presents somewhat different characters in various parts of its distribution. The districts where it is developed are characterized by great faults and inversions of the strata, rendering, as appears above, even their order uncertain. Dr. Hunt, in his table of formations, places the Sillery below the Potsdam and Calcif erous, and the Levis above them, including in the Levis alike the graptolitic slates, the Lauzon, and the fossiliferous limestones of the Levis of Logan. The Quebec group extends along the west side of the Green Mountain range, and covers a considerable part of the State of New York, east of the River Hudson, the rocks being part of the non-fossiliferous clay-slate formerly called the Hudson River slate, which outcrops near Poughkeepsie. The area is divided, on the west, from the true Hudson-River slate formation by the great fault mentioned in note 8 of New York. 3 c. Chazy. — To the Quebec group succeeds the Chazy limestone. As a whole, it is a dark, irregular, thick-bedded limestone. At Chazy, New York, on Lake Champlain, it contains many rough, irregular, flinty or cherty masses. At Essex the beds are more regular, and form, in consequence, a better building stone. As a limestone it is purer than the Calcif erous, being non-magnesian ; the principal foreign matter is silica in the form of chert. It is free from the brown earthy spots, and the masses of brown calcareous spar so common in the Calcif erous sandrock. This formation is 130 feet thick on Lake Champlain, but it is less constant in the series than the others, and as it is not an important formation on the lines of the railroads, an extended description is not here necessary. It is not found in the valley of the Mohawk. Its fossils are found in Pennsylvania and Virginia, but its limits are not there defined. In the Northwestern States the St. Peter's sandstone occupies the same place in the series as the Chazy in the east. 3 c. St. Peter's Sandstone, (Upper Sandstone of Owen). — This is a western formation and does not occur in the Eastern states, but Prof. Lesley thinks it may have representatives in the massive silicious members of the great limestone- mass of from 5,000 to 6,000 feet thick, as measured along the two branches of the Juniata in Pennsylvania. It is first recognized in going west, to the southwest of Winnebago Lake. It is also seen up the Mississippi, near St. Paul and St. Anthony, and on the streams of northeast Iowa, and at La Salle, Illinois, where it is brought to the surface by an anticlinal axis. ^ It is remarkable for its uniform thickness, which is from 72 to 100 feet over a space of 500 miles in length and 400 miles in width. In Central Wisconsin, however, its thickness is very irregular. It is also of the same character throughout, being composed of wonderfully uniform and exceedingly minute grains of sand, held together by the merest trace of cement, so that the mass may easily be moved with shovel and pick, as is everywhere done for the purpose of obtaining sand for mortar. This sandstone, though usually white, sometimes assumes a buff or brown color from the presence of iron, and in some localities it becomes red or is marked by bands of a bright green color. It appears like a recurrence of the Lower or Potsdam sandstone. Being composed almost entirely of pure silica it is, when not colored by oxide of iron, one of the very best materials yet discovered in the west for the manufacture of glass. It is the same as that known in Missouri as saccharoidal sandstone, which is carried to Pittsburg, Pennsylvania, and used by the glass-makers in manufacturing the best kinds of glass. See Note 2, Missouri. 18 THE GEOLOGIST'S TRAVELING HAND -BOOK. 4 a, Trenton Limestond — Next in ascending order occurs the 4 a. Trenton limestone which, in the Northwestern States, is divided into the Buff limestone and the Blue limestone. In Wisconsin there are two buff and two blue beds alternathig. They are undoubtedly the same as the well known Chazy, Birdseye, Black River and Trenton limestones of New York and other Eastern States. They are known in the "West wherever the exposures reach to the upper sandstone. The upper member of the 4 a. Trenton limestone, in South Western Wisconsin and the adjoining parts of Illinois and Iowa, is the very important GALENA or lead- producing limestone, which has no exact representation in the Eastern States. It is a light gray or yellowish-gray, heavy-bedded rock. It is compact, minutely crystalline throughout, often with small cavities lined with crystals of brown spar, and the whole thickness of the formation is 250 feet. The Galena or lead ore contains 13.4 per cent, of sulphur and 86.6 per cent, of lead, and is found in heavy bodies in crevices in this Galena dolomite or magnesian limestone. Prof. J. D. Whitney, in his admirable report on the geology of the lead region of Southwestern Wisconsin, has proved that these lead deposits must have been introduced into the fissures by precipitation from above. The lead mines of Missouri are chiefly in the Lower Magnesian limestone. In Wisconsin, a very noticeable feature of the Trenton limestone is its marked division into the two parts before mentioned. One, which is the lower half, is very heavy bedded, in layers of two or three feet thick, known as the glass- rock, and the other thin bedded, in layers of two or three inches. There is always a stratum of carbonaceous shale from a quarter of an inch to a foot or more in thickness, which separates the blue or Trenton from the thin bedded Galena limestone above it. Professor R. D. Irving describes the Galena limestone as almost invariably a very compact, hard, crystalline rock, of a yellowish-gray color, with numerous small cavities filled with a softer material, or lined with crystals of calcite. The upper portion is thick-bedded and free from flints, the layers being from one to four feet thick, while the lower portion almost invariably consists of several feet of layers from one to two inches thick. Good exposures of parts of the Galena limestone are frequently to be met with. It may be seen in cliffs and ledges, on nearly all the streams in the lead-region, where it weathers irregularly, leaving the surface full of small cavities, due to the removal of its softer parts. The formation contains masses of flint in layers, or in irregular pieces, which are principally confined to the middle and lower parts of the formation, although not entirely absent from any part. In the interior valleys of Pennsylvania, as for example, in Sinking Valley, Blair Co., considerable quantities of zinc-ore, and some galena, have been found in the Trenton limestone group, which is there at least 1,000 feet thick. The lead- mines of Wythe Co., Virginia, are at the .same, or at a somewhat lower horizon. The zinc mines near Bethlehem, Pennsylvania, and near Landisville, Lancaster Co., are nearly of the same geological age. Isolated crystals or small masses of galena occur in crevices in the limestone beds of this age throughout the entire range of the great valley from Newburgh, on the Hudson, to Chattanooga, in Tennessee. The limestones hi this valley, which are the Auroral limestones of Rogers', are, by some geologists, referred to an older series. See, in this connection, the foot note on page 21. DESCRIPTIONS OF THE FORMATIONS. 19 In the State of New York the lower part of the Trenton is called the Birclseye. It is a perfectly pure limestone, and the next layer, which is the middle or Black River sub-division, is sometimes used as a marble. It is solid, hard and easily worked, by reason of its conchoidal fracture, and is valuable for lime and for building. The upper part of the formation, or Trenton limestone proper in New York, consists of two distinct varieties, at Trenton Falls. The first or upper part, is a dark or black colored, fine grained limestone, in thin layers, separated regularly by black shale or slate, forming the great mass in which the creek has worn its channel, and in which are all the falls. See Note 62, New York. The second, or lower part of the Trenton proper, is a gray, coarse grained limestone, in thick layers, and it is quite crystalline. This is the quarry-stone at Prospect, above Trenton Falls. At Montreal, the church of Notre Dame and many other structures, are constructed of the gray variety of the Trenton limestone, quarried behind the city, but the thinner layers, when not dressed, are of a more pleasing color, and make a handsomer building-stone. The Trenton formation in all parts of the United States, is almost always a limestone. A conspicuous example of the Trenton, Utica and Hudson River formations, is seen in the long continuous and beautiful valley of the Hudson and Lake Chatnplain, the Kittatinny valley of New Jersey, the Cumberland valley of Pennsylvania, the Shenandoah valley of Virginia, and the valley of East Tennes- see. The fertility of its limestone land is almost inexhaustible. The deposits of brown hematite iron-ore, found in the soil, and occupying hollows or basins in the softer limestones below the Trenton in so many places, and in such large quan- tities, are supposed by some to be of aqueous origin, and not strictly a product of this formation, which is only its receptacle. But many other geologists, — R. M. S. Jackson, A. A. Henderson, Lesley, Platt, Prime and Frazer, have all agreed in advocating the opposite view, each from his own independent studies. They derive the lirnonite beds either from the solution of the ferriferous limestone lay- ers, or from the intercalated micaceous slates, or from the pyrites-bearing slates of the neighborhood. According to Dr. Hunt, it comes from the change of masses of iron-pyrites and of carbonate of iron, originally imbedded in the limestones and slates. See the foot note on page 21. 4 b, Utica Slate, — The Trenton limestone is succeeded by a dark or black carbonaceous slate, called the Utica slate. In Pennsylvania this formation is everywhere darkly colored, and the coloring matter is probably derived from abundant remains of marine plants or animals. While the black color of some of the clays in the brown hematite ore banks of the upper range (immediately beneath the Utica slate) as at the mines in Lehigh Co., Pa. , and the Brandon ore mine in Vermont, seems to be derived from the black slates of the Utica, the gray color of some of the limestones, and of the carbonate ores, (as at the Saucon zinc mines) is known to be due to disseminated graphite. Within the State of New York, it is everywhere black, and usually soft and fissile. Thin beds of impure limestone are associated with it in many places, and sometimes thin layers of carbonate of iron, and it passes into the Trenton limestone by gradual interstratification. Thus bands of slate are interstratified in the limestone, and thin strata of limestone containing fossil remains in the lower part of the slate. These crumbling shales may generally be distinguished by their dark blue-black and brownish-black color, but there are some strata among the 20 THE GEOLOGIST'S TRAVELING HAND -BOOK. grits of the Hudson River that can scarcely be distinguished from these. The Utica slate weathers ash-gray, rapidly disintegrates, and, where it is exposed in cliffs, frost and other agents constantly break it into small fragments, which collect at the base in the form of a talus. In Pennsylvania, it outcrops, with little or no variation, as a dark blue carbonaceous slate and shale, extremely fissile in its lower beds. It forms the surface-rock along a narrow region in the Mohawk Valley. In East Tennessee, the beds both of Utica and Hudson River, or Cincinnati, are of great extent, and consist of blue calcareous and sandy shales, with some layers of calcareous sandstone. Professor Hall considers the Utica slate as properly the lower member of the Hudson River group. 4 c. Hudson River, (Cincinnati, Nashville, Loraine and Frankfort sandstone and shale.) — The rocks of this group in New York are mostly slates, shales and gray, slaty and thick-bedded grits. The slates and shales are generally dark brown, blue and black, and the grits are gray, greenish and bluish-gray. They are stratified and conformable, alternating a great number of times, without any regular order of alternation, and in Eastern New York are from 500 to 800 feet thick. The first New York geologists called this formation the Greywacke, and it is still so called by the stone-cutters on the River Hudson. Its lower portion was called the Frankfort slate and sandstone, and the upper part the Pulaski shale and sandstone, which latter were afterwards called the Loraine shale. Wherever streams have passed over it they have, in process of time, worn hi the rocks a deep channel or gorge, sometimes preventing a free communication across them, as at Loraine, (See note No 69, New York.) By decomposition, it produces a tenacious, clayey soil, favorable for grass, forming the best dairy-land, as in Orange Co., New York, about Goshen and Middletown. It increases in thickness southward so rapidly that at the Delaware and Lehigh water-gaps, measurements of 5,000 feet have been made through it, from its top downwards, without reaching its lower limit. In many places along its last outcrop towards the Atlantic, it has furnished many masses of a substance resembling anthracite, also beds of impure limestone, and beds of red shale, which increase very much going south into Virginia. In Pennsylvania, the Hudson River slate consists of blue and greenish-gray shale, alternating with gray calcareous and argillaceous sandstone in thin beds. The sandstones grow more abundant as we ascend in the formation. The middle portion, where much metamorphosed and intersected by cleavage-planes, in certain localities, produces a good roofing-slate, as at Slatington and Delaware Water Gap, Pa. The geologists of the western states generally, have dropped the designation of Hudson-River, at least hi regard to strata west of the Alleghanies, and have substituted for it the name, CINCINNATI, proposed by Worthen and Meek ; making this term co-extensive with the former. In this guide, Hudson-River is used in the Eastern and Cincinnati in the Western States. At Cincinnati the whole series is about 800 feet thick, and, according to Dr. Newberry, by its fossils, is the equivalent of the Chazy, Trenton, Utica and Hudson-River, all blended together. In Ohio it is composed of alternating beds of limestone and shale, the latter sometimes called blue clay. The limestone is an even-bedded, firm, durable, semi-crystalline limestone, crowded with fossils. It is commonly called the blue limestone, but the prevailing color is grayish-blue, and the weathered surfaces show yellowish or light gray shades. In Southern Illinois the lower part of the Cincinnati is composed of brown sandy shales and sandstone, and the upper portion is a thin- DESCRIPTIONS OF THE FORMATIONS. 21 bedded, dark bluish-gray, fine grained limestone, two to six inches thick, with shaly partings between the layers. In Northern Illinois it is bituminous, and consists of sandy shales with thin bands of limestone. Ill Iowa it .is the Maqueketa shales, which are bluish and brownish shales forming a stiff clay soil. In Missouri the upper shale bed only is found, with an occasional flag-like limestone layer. On the west bank of the River Hudson this formation continues uninterruptedly from Kingston to Saratoga Lake, and on the east side of the river also, it is clearly denned along the valley, with a width of from one to several miles, varying and irregular in outline from Rhinebeck to Lake (Jhamplain, its eastern limit approaching the river at the former place. — J. Hall, A. A. A. Sci. 1877. The N.Y. C. & H. R. R. R. runs on it for 65 miles, from below Rhinebeck to Troy, and the formation continues along the river many miles further northward. The name Hudson River is, therefore, highly appropriate for the formation. The shales and impure sandstones are upturned, and thereby modified in character along the river, but they are no older than the horizontal rocks in the Mohawk valley, a few miles west of the River Hudson, and at Frankfort, Loraine and Pulaski. They have the same fossil contents, and their direct continuity can be traced. There is, it is true, a great mass of metamorphic shale and sandstones to the eastward of those on the river above described, and between them and the state-line, which contains different fossils, and belongs to an older formation, called the Quebec group. But the Hudson River formation is the same which extends through Canada and the Northwestern States, and southward through Ohio, Kentucky and Tennesee, where it is called the Cincinnati and Nashville formation. It is very much to be regretted that the original name of Hudson River has not been everywhere retained. There is more confusion and uncertainty about the Cambrian or Lower Silurian formations in many localities than about any other portion of the whole series. The difficulties arise from the scarcity of fossils, the disturbed and altered state of the greater part of its rocks, from the absence of those which should immediately precede and follow them, and which if present would show their position in the series, and also from the difficulty of distinguishing them from those of greater age adjoining them, and with which they are really or apparently blended.* *Overlying the various crystalline terranes described on pages 10-13, along the western border of the Appalachian mountain belt from the Gulf of St. Lawrence to Alabama, are found extensive formations, differing, it is said, from those, and from the fossiliferous rocks above them, which have been the subject of much discussion. To these rocks, as displayed in the Taconic hills of New England, Prof. Emmons gave the name of the Taconic system, which he divided into a lower and an upper series. The views of Emmons are still held by Dr. T. Sterry Hunt, and others, and there is agrowing belief in favor of the existence of such a series of rocks; but they are opposed by Mather, Hall, Logan, Rogers, Dana, and the great majority of American geologists, who hold that Emmons's Lower Taconic series is the stratigraphical equivalent of the Potsdam, Calcif erous,Quebec, Chazy, Trenton, Utica and Hudson River, and his Upper Taconic, of the succeeding Oneida and Medina formations; their lithological differences from the same formations further west, being due to some agency which has changed them, inducing crystallization, and obliterating their organic remains. The purposes of this work will be best subserved by describing the formations in accord- ance with the received opinions, of geologists, generally, without entering on controverted ground, and merely stating briefly, that what is designated as the Upper Taconic, extends from Orange County, New York, above Newburg, across the River Hudson, and through Dutchess and other counties of Eastern New York ; thence through Western Vermont and Canada, as far as the city of Quebec and beyond. The Lower Taconic, including a granular quartz-rock, and the Stockbridge limestone, with roofing-slates, and soft, so-called talcose slates, extends from Vermont along the western base of the South Mountain and the Blue Ridge, underlying the great Appalachian valley, as far as Alabama, and having a thickness of 5000 feet. There is also a range, more or less contin- uous, of this formation, from Delaware into North Carolina, where it is found at the eastern base of the Blue Ridge, resting on the Montalban. According to Dr. Hunt, the Lower Taconic constitutes a fifth crystalline series, younger than the Montalban, and by him distinguished by the name of TACONIAN, which includes the Auroral limestones and the Primal slates of the Appalachian valley, with their limonites and crystalline iron- ores, and also the itacolumites and the pyrophyllite slates of North Carolina. The Upper Taconic, which comprehends the Quebec group of Logan, consists, in hia view, of uncrystalline strata of Cambrian age, below the horizon of the Trenton limestone, 22 THE GEOLOGIST'S TKAVELIKG HA:NT>-BOOK. 5-8. SILURIAN (OR UPPER SILURIAN) AGE. 5 a. Medina. — The lower member of this formation is a pebbly sandstone or grit called the Oneida conglomerate, being the same as the Shawangunk conglomerate. The upper member is called distinctively the Medina sandstone, and is usually a red or mottled argillaceous sandstone. 1. The Oneida conglomerate in NewYorkis composed of quartz pebbles rarely exceeding three-fourths of an inch in diameter, and of white or yellowish quartz- sand. In some localities there is some interposed greenish shale. The source of its materials was to the south, the rock being 500 feet thick in the Shawangunk Mountain at Wurtsburg, on the N.Y. & Os. Mid. R. R, and 1000 feet thick in some parts of Pennsylvania and Tennessee. The greatest thickness of the Oneida in the eastern part of New York is 30 to 40 feet, but in the western part the same place is occupied by a gray quartzose sandstone, fine grained and compact. Passing upwards, the gray sandstone intermingles with the Medina sandstone, which, in its lower parts, differs chiefly in color. The red color of the Medina sandstone seems to be partially communicated to the gray below, which is often striped and spotted with red. There is, lithologically, no very strong line of demarcation between the two rocks. The oxide of iron, the red coloring matter of the upper member, has been transfused through the material of the lower as far as its particles could find admittance. The flagstones in the side- walks of Buffalo and Rochester, of a white color clouded with red, are of this formation . In New Jersey the gray sandstone formation consists of a thick series of hard, white and whitish gray siliceous rocks, of various degrees of coarseness, from that of a fine grained, pure sandstone to that of a quartzose conglomerate with thickly-set pebbles averaging half an inch in diameter. This is the summit of the long, straight mountain ridge called the Kittatinny or North Mountain, extending from near the Hudson River into Virginia. In Pennsylvania the Oneida conglomerate is a compact, greenish-gray, massive sandstone, containing in many places thick beds of siliceous conglomerate, and the Medina sandstone proper is a thick mass of alternating red shales and red and gray earthy sandstones . It is the North Mountain of the great Cumberland valley. At the Delaware Water-Gap the whole mass of Oneida and Medina consists of seven massive plates of coarse sand and conglomerate, separated by more argillaceous layers from each other. Going west, the number, according to Prof. Lesley, is reduced to five, and finally in Middle Pennsylvania to two, each of them very thick, and making its own mountain-crest when the dip is vertical, while the intermediate softer red mass forms a little valley between the crests. The whole formation is about 1,900 feet thick. When the dip is gentle, the Oneida makes a beautiful lofty terrace upon the flank of the mountain, the crest of which is always made by the Upper Medina. Traced southward through Virginia into Tennessee , this formation gradually thins away to 50 feet, as seen west of Knoxville. 2 . The Medina sandstone proper succeeds the gray sandstone, there being no definite line of division between them. In this rock is found the Fucoides Harlani affording a positive character whereby to recognize it in the series . This sandstone is almost invariably of a red color, generally a brown-red, more rarely variegated light red and yellowish, and in a few rare instances of a light or whitish color, DESCRIPTIONS OF THE FORMATIONS. 23 partially greenish. It is both fine grained and coarse grained, the latter usually of the deepest color, the former more variegated. The lower falls of the Genesee, below Rochester, 110 feet in height, are formed by this rock. The deep gorge and high cliffs on both sides of the Niagara River, at Lewiston, New York, are more than one-half excavated in the Medina. In New Jersey it is a thick formation of red and variegated sandstones and shales. Its lower beds are a dark red sandstone of a very ferruginous composition, and extreme hardness, and in the middle and upper divisions of a brownish red shale and a very argillaceous sandstone, partly calcareous. Neither the Oneida nor Medina are found west of Ohio. Some large masses of galena and copper-pyrites with blende, have been found in the Oneida or Shawangunk grit, on the Erie R . R. east of Port Jervis and at Ellenville, but they were soon exhausted. When the Medina is a heavy coarse rock it produces a poor, barren country, but in Western New York it is more calcareous, and the soil is much better. 5 b, Clinton. — This group consists of many different kinds of rocks or masses, from which circumstance it was first called the Protean group. The name of Clinton was given to it on account of the characteristic masses being found around the village of Clinton, in Oneida County, New York. It consists of green and black-blue shale, greenish, gray and red, soft marly layers, often laminated calcareous sandstone, encrinal sandstone, and red f ossiliferous iron-ore beds . The most persistent member of the group is the shale. It is bluish when fresh quarried, but when long exposed it is always of a greenish hue. The next member is the greenish sandstone, which is in thin layers, having its surface generally covered with facoides. This also has a bluish tint when fresh quarried. The third persistent member consists of two iron-ore beds in New York and several in Pennsylvania. The term Protean is still applicable to the Clinton group, which, in some places, consists of thin shaly sandstones, shales, and even conglomerates ; in others, of thin bedded, impure limestones, shaly sandstones, iron-ores, etc : still again it appears as a duplicate series of shales, limestones and iron-ores, with some intermixture of sandy matter, all containing an abundance of marine shells. In the west the formation is limestone, and is of a more uniform character. The Clinton formation produces the celebrated f ossiliferous iron-ore, generally known as the FOSSIL OEE, which occurs in it in every state from New York to Alabama. In all its localities this ore is red or brownish-red, very hard, and where unaltered, invariably oolitic or in larger sized concretions. In New York, where it is extensively mined, there are two beds of it, generally about 20 feet apart, and upon an average about a foot and more in thickness. The ooJitic particles are usually more abundant in the lower, the larger sized concretions in the upper bed. The two beds never appear at 'the same locality, or in the same line of section, but where the lower one occurs the upper one is wanting, and where the upper one occurs the lower one is not found. In Pennsylvania the Clinton is a very extensive formation, nearly 2,000 feet thick, of slate, shales, sandstones and iron-ore, with the same variety as elsewhere, and its iron ore is very rich, productive and valuable. The outcrop of the ore- beds have been traced for hundreds of miles. In Dodge County, Wisconsin, near Milwaukee, the Clinton iron-ore, at Iron Ridge, is from 15 to 18 feet thick, but this is very unusual, and it is not in the same part of the formation as the fossil ore in the east . The deposits of this ore in East Tennessee and in Alabama, called the Dye-stone ore, are still more extensive. 24 THE GEOLOGIST'S TRAVELING HAND -BOOK. 5 c. Niagara. — This group consists of two distinct members, a shale below and a limestone above. The shale in New York constitutes a very uniform deposit, while the limestone, from a thin concretionary mass in the east, becomes an extensive and conspicuous rock, constantly increasing in thickness, in a western direction, even far beyond the limits of that state. The cataract of Niagara is produced by the passage of the river over this limestone and shale, and, from being a well known and extremely interesting point, as well as exhibiting the greatest natural development of these rocks in New York, this name was adopted for its designation. In this vicinity, the limestone is 164 feet thick, with the shale beneath 80 feet thick. The lower part of the Niagara group exhibits a great development of dark bluish shale, which, on exposure, gradually changes to gray or ashen color, and forms a bluish or grayish marly clay. In this state it is undistinguishable from the ordinary clays, and its outcropping edges, when long weathered, are often considered as clay beds. The Niagara is a very extensive formation, but its shales are much more persistent and wide spread than its limestone member in the east, but the limestone is more widely spread in the west. The gorge below the upper falls at Rochester is the best place to study these shales. In an agricultural point of view, this formation, like all limestones, is an admirable one. There is no better soil than that of the Niagara about Rochester, New York . A silico-argillaceous limestone, hi New York, forms the beds of passage from the soft shale below to the purer limestone above . It is of a dark or bluish color when freshly exposed, but soon changes to light gray or ashen. These beds of passage are succeeded by a dark bluish gray sub-crystalline limestone, of a rough fracture, and separated into thin courses by dark shaly matter. The third member is a coarse grained concretionary mass, in irregular layers, exhibiting a very peculiar contorted appearance, as if much disturbed while in a semi-fluid or yielding condition. The concretions often present cavities lined with crystals, or contain the remains of some organic body. This is the surface-rock in West Avenue in Rochester. The Niagara limestone is the great limestone which, in "Wisconsin, occupies the peninsula between Green Bay and Lake Michigan, and then stretches southward to the south limits of the state, and far into Illinois and Indiana. It will be noticed in looking over the Guide, how many railroad-stations in the western states, just mentioned are on the 5 c. Niagara, and how very extensive the formation must be. Its general appearance is that of a regularly bedded brown or buff dolomite, with occasional intercalations of beds of massive gray limestone. The quarries of beautiful buff limestone at Athens and Joliet, Illinois, so much used in Chicago for building-purposes, are in this formation. At Joliet there is 40 feet in thickness of this buff and gray limestone. West and northwest of Chicago the Niagara limestone is highly charged with petroleum, which oozes from the stone, blackening the face of walls built of it. On Goat Island, at Niagara Falls, the petroleum is also seen on the limestone in small quantities. In Michigan it is a grey crystalline, rather fine grained, moderately fossilif erous, dolomitic mass, 218 feet thick on Green Bay. In Western Canada the upper part of the Niagara limestone contains peculiar fossils, and is called the Guelph, and in Wisconsin it is subdivided into the 4. Guelph, 3. Racine, 2. Waukesha and 1. Mayville beds. DESCRIPTIONS OF THE FORMATIONS. 25 This formation establishes the topographical distinction between the lower plain of Canada, in which lie Lake Ontario and Georgian Bay, and the upper plain of the United States, on which lie Lakes Erie, Huron and Michigan. Its terrace crosses Ontario, growing loftier as the thickness of the formation increases northwestward, until it becomes a range of limestone mountain-land, forming the peninsula between Lake Huron and Georgian Bay. It is there broken down in a range of islands, and reappears as a peninsula, just mentioned, cutting off Green Bay from the western shore of Lake Michigan. The Niagara and other limestones above it, seem not to have been deposited hi Pennsylvania between the Delaware and Susquehanna rivers, and in Middle Pennsylvania. While the limestones below it are well represented, the Niagara is wanting as a separate formation, and its characteristic fossils are scattered through the Clinton rocks. 6. Salina, (Onondaga Salt Group.)— This is an important group in the State of New York, containing all the gypsum and water-lime, and furnishing all the salt water of the salines of the city of Syracuse, which produce more salt in a small territory than any other in the world. Its soil is excellent for agricultural purposes, forming, with those south of it, including the Hamilton, the garden-region of the State of New York. The whole group is about 700 feet in thickness, and is divided into five deposits, but there are no well defined lines of division between them, except the last two. 1. The first or lowest is a red shale, showing green spots at the upper part of the mass. The great mass is of a blood red color, fine grained, earthy in fracture, with no regular lines of division, but breaking or crumbling into irregular fragments, and shows but little variation. In several localities the red shale shows numerous green spots, varying from an inch or less to several inches in diameter, which strongly contrast with the red ground on which they are placed. The green color is the result of a chemical change, the peroxide of iron being reduced to protoxide. This red shale is of great extent along the railroad, and presents a thickness of from one to five hundred feet, yet nowhere has a fossil been found in it, or a pebble, or anything extraneous, excepting a few thin layers of sandstone. The main line of the N. Y. C. & H. R. R. R. runs on the Salina formation 107 miles, from Canastota to Brighton, and nearly all of this distance on this lower or red shale portion. 2. The second deposit is the lower gypseous shales, the lower part of it alternating with the red shale, which ceases with this mass . This second deposit consists of shales and calcareous slates of a light green and drab color, with alternations of different colored masses, red, green, bluish and yellow, with a little whitish and greenish sandstone, different colors predominating in different places. In this deposit gypsum occurs in fibrous masses, either reddish or of a salmon color, which colors are peculiar to this deposit. The quantity of gypsum in this second deposit is comparatively small, and it is unimportant in an economical point of view. Both the second and third deposits are permeable to water, which cannot be obtained in any of the hills composed of them unless the wells are sunk to the level of the water-courses, a fact which explains the absence of all brine-springs above the level of the country. 26 THE GEOLOGIST'S TRAVELING HA^D-BOOK. 3. The third member of the Salina formation is the gypseous deposit, which embraces the great masses quarried for plaster or gypsum, consisting of two ranges, between which are the hopper-shaped cavities, the vermicular lime-rock, and other porous rocks. This is the most important deposit, not only on account of its plaster-beds, but because it is only in this deposit that we have positive evidence that salt has existed in a solid state, and, therefore, the only source whence the saline springs of Syracuse could have been derived. The great mass of the deposit consists of rather soft yellowish or drab and brownish colored shale and slate, and of more compact masses which are hard, a brownish color predominating. It is usually denominated a gypseous marl, being earthy and indurated, slaty and compact. Some of it when weathered, presents a peculiar appearance, as of having been hacked by a cutting-instrument, with some regularity. The gypsum does not appear in layers or beds, but it occurs in insulated masses, and it assumes irregular not globular forms. The dark color of the gypsum is owing to carbonaceous matter. In many localities there are two ranges of these masses or plaster-beds, generally separated by the vermicular rock and the hopper-shaped cavities. There are two masses of the vermicular rock, the upper one four feet thick, with large porous cavities, the lower one twenty feet thick, with small pores. This vermicular limestone is a porous or cellular rock, resembling lava. It is dark gray or blue in color, and perforated everywhere with curvelinear holes, but otherwise very compact. The holes or cells vary from microscopic size to half an inch in diameter, the cells being very irregular, and communicating with each other, some being spherical, and the resemblance in structure to a porous lava is complete. Forms which are due to common salt have been discovered in this rock, showing the presence of crystals of this substance, which were removed by solution. The most interesting products of the group are the hopper-shaped cavities, which must have been produced by common salt, as no other soluble mineral presents similar ones. They show conclusively that salt existed in this third deposit. When salt crystallizes, a cube first makes its appearance upon the surface of the brine, then similar cubes form around its border, being attached to its upper surface, near the edges, while it gradually sinks, and additional particles are added, forming another row of cubes upon the first range. This is many times repeated, until the density of the mass formed becomes greater than the liquid, when it falls to the bottom. When examined, being turned upside down, it shows a pyramid of regular steps, terminated by a cube, and when its position is reversed it presents a form like the hopper of a mill. Where two ranges of plaster beds are seen the hoppers occur between them, and between the two massses of vermicular rocks, and are from one inch to three inches and more in diameter. These hopper cavities are formed hi the gypseous marl, or in the more solid parts of the vermicular rock. Testaceous animals cannot live in water saturated with gypsum, hence no fossils are found in the deposit. No trace of rock-salt in New York has met the eye of any one, but the existence of it is a matter of no doubt.* The fact of the difficulty of obtaining water in the gypseous hills, in either the second or third deposit, show there is little probability of finding salt above the level of the waters on account of its having long since been dissolved. See Note 27, New York, as to the salt-wells at Syracuse. *After the above was written, rock-salt was first found, in June 1878, in a boring south of Kochester. DESCRIPTIONS OF THE FORMATIONS. 2?' The "Old Road," or the division of theKY. C. & H. R. R. R., from Syracuse to Rochester, via Auburn, runs on the gypseous portion of the formation, and the plaster-beds can be inspected at Marcellus station, close to the railroad, but the best gypsum quarries are on Cayuga Lake, just north of Union Springs, the masses being from fifteen to twenty-five feet thick. Sulphuric acid springs, and numerous sulphur springs occur in the State of New York, in the Salina formation, often rising through the crevices of the overlying Water-lime group. 4. The fourth or succeeding portion of the Salina formation, consists of those rocks which show groups of needle-form cavities, placed side by side, caused by the crystallization of sulphate of magnesia, and presenting a finely striated columnar appearance. The rock is a dark gray or drab colored, impure limestone, with cavities containing crystals and often embracing shaly beds. It appears to be a magnesian limestone, its usual color is a brownish drab, also dove color, and it breaks with an earthy fracture. The Salina formation extends westward across Canada, and the salt-deposits of Goderich in Ontario are in it. Six large beds of rock salt have been found there in boring, measuring in all 126 feet in thickness, at from 1,027 to 1,385 feet in depth from the surface, the beds measuring from 6 feet to 35 feet each in thickness. The salt-deposits and brine-springs of the world are by no means confined to the Salina formation ; on the contrary, they are found in almost all the formations from the oldest to the youngest, and always accompanied by gypsum and red and vareigated marls. 5. The fifth division of the Salina or Onondaga Salt group is the "Water- lime, which has generally been considered aa belonging to the Lower Helderberg, but which properly is part of the Salina. All the hydraulic cement of the State of New York, known as Rosendale Cement, and Syracuse or Manlius Water-lime, is manufactured from a portion of the stone of this Water-lime formation. It is an earthy, drab-colored limestone and usually consists of two layers of drab limestone, always separated by an intervening mass of blue ; it is easily recognized by its gray or ash color when weathered. It has a thickness of not less than 30 feet, and often attains a thickness of 100 feet or more in New York. When the Water-lime is burnt the stone does not slake, if of a good quality. It is ground in a mill, and then it hardens or sets when mixed with water, and remains so under water, its goodness depending on the hardness or cohesion when set. Its peculiar quality is owing to the proportion of silica and alumina it contains. The Water-lime continues across the State of New York, the drab layers which constitute it being always found. The courses into which the layers of Water- lime are sometimes divided show a crenulated or notched surface, like the sutures of a skull, the two surfaces interlocking each other. Professor Hall says the Water-lime is a distinct member, which does not belong to the 7. Lower Helderberg group of strata, but to that below it, the 6. Salina, of which it is the upper member. It is not closely related to either, but more nearly to the Salina, and is much more widely spread than the other members of the Salina. The cement quarries of the Delaware River, between Pennsylvania and New Jersey are in this formation, but cease after passing the Lehigh River westward. The beds near Copley are Trenton or older. In Middle Pennsylvania, where the Salina group, destitute of gypsum and salt,, measures 440 feet, the cement beds above measure 580 feet, and the Lewistown limestone (Lower Helderberg) 162 feet, as measured by Ashburner and Billin, in 1876. 28 THE GEOLOGIST'S TRAVELING HAKD-BOOK. 7. Lower Helderberg.— In consequence of these rocks being so well developed on the Helderberg Mountains, near Albany, New York, they have received that name. The Lower Helderberg series consists of five limestone sub-divisions, and the Upper Helderberg of four members. They are separated by an important sandstone formation — the Oriskany. The Lower Helderberg, which is well developed in the eastern part of New York, thins out in going west, and at Syracuse disappears entirely. The sandstones also thin out and disappear, so that at Syracuse the Upper Helderberg rests on the Water-lime, the upper member of the Onondaga Salt group. The Lower Helderberg consists, in ascending order, of the 1. Tentaculite limestone, the 2. Pentamerus limestone, the 3. Delthyris shaly limestone, the 4. Encrinal limestone, and 5. Upper Pentamerus limestone. 1. The Tentaculite limestone is the lowest member of the series. Portions of it afford fine building stone, which can be procured in blocks of large size, perfectly solid, and free from cracks or flaws. They vary from ash-gray to black, and present almost every shade between these colors. The strata are intersected by two main systems of joints nearly perpendicular to each other, hence the rock can easily be quarried in large blocks. But much of it is thin-bedded, often thinly laminated, dark blue ; its color, texture and composition contrast- ing strongly with the Water-lime below. — H. The 2. Pentamerus limestone is rarely pure, being more or less mixed with black shale, which gives a dark color to the rock, it being usually a dark gray. It is crystalline in grain, and is in layers, but the lines of division are not straight, and the surface is not even. The whole mass has a rough appearance, and it does not make a good building stone. — V. The 3. Delthyris shaly limestone, as its name implies, is a shaly mass, and consists of alternate beds of shaly and compact limestone. It is an exceedingly interesting rock from the great number of species, the abundance and perfection of its fossils. — Hall, 144, The 4. Encrinal is a compact crinoidal limestone, and the 5. Upper Pentamerus is a bluish gray limestone. In Pennsylvania, according to Rogers, the Lower Helderberg is 50 to 100 feet thick, a diversified calcareous formation, of some shade of blue, argillaceous and flaggy in its lower beds, and shaly towards the middle, with layers and nodules of chert. 8. Oriskany Sandstone. — In New York the greatest thickness of this rock is not more than thirty feet, and usually much less, but in Pennsylvania, Maryland and Virginia it is, in places, as much as 700 feet ; even hi New York it covers an extensive surface, and is strongly marked in its fossils, which are generally of a large size, and attract the attention of travelers. At the typical locality, Oriskany Falls, the sandstone is twenty feet thick, and is of a light yellow color, friable, and readily crumbling into pure sand ; no part of it being sufficiently solid for durable work. One characteristic of this rock is the abundance of small cavities, which have been formed by the destruction of fossils. These present themselves in all cases where the rock is well developed. The porous nature of the mass has admitted the percolation of water, which has dissolved the calcareous matter of the shells, usually leaving casts of their internal structure. As a mass the Oriskany sandstone is a coarse, rather loosely cemented, purely silicious sandstone, of a yellowish white color. Sometimes it is shaded brown or some other dark color. In Pennsylvania it forms rough ridges, with a poor sandy soil. It is used for glass- making, and contains an iron-ore too silicious to be valuable. Some of our geologists (Hall, Rogers, Dana, etc.) place the Oriskany at the top of the Silurian series. and others (Newberry, Lesley, Hunt, etc.) at the bottom of the Devonian. DESCBIPTIOXS OF THE FORMATIONS. 29 9-12. DEVONIAN AGE. 9. LOWER DEVONIAN. 9 Upper Helderberg or Corniferous, — This very widely extended formation consists of four important members, the Cauda-galli, the Schoharie grit, the Onondaga limestone, and the Corniferous limestone, the upper member. But in the recent text-books on geology the whole formation is called the Cornif- erous, which was the name given by Eaton to the whole formation of limestone. It forms the Helderberg range, a high ridge which extends through the State of New York, forming a very rich and productive tract of country. This group of strata, as above limited, and designated the Upper Helderberg by Professor James Hall, is, in his opinion, deserving of recognition as the base of the Devonian, the Hamilton group being the middle, and the Portage, Chernung and Catskhl the Upper Devonian. 9 a. Cauda-galli. — This is a fine-grained calcareous and argillaceous sandstone, usually drab and brownish, and blanching by long weathering. It readily strikes the eye by its contrast with its associated rocks, and by the singular marking of impressions strongly resembling the tail of the common barn-yard fowl, from whence its Lathi name of Cauda-galli or cock's-tail. Its fossils have been found in New York and at Crab Orchard, in Kentucky. In New Jersey, northeast of the Delaware Water Gap, this and the Schoharie are three hundred feet thick. 9 b. Schoharie Grit. — This is very much like the preceding, but altogether different hi its fossils. It is a fine-grained, very calcareous grit, or an arenaceous limestone, naturally brown, but weathering to a gray or drab color, containing a great number of fossils peculiar to this stratum, and is found in the mountain one and one-half miles northwest and northeast of Schoharie, New York, and extends by the Helderberg range to Kingston. The Schoharie Grit is a highly fossiliferous formation, and has a wide geographical extension. Its great number of cephalopods gives it a marked character, but it contains other fossils identical with the limestones above. — H. The 9 c. Onondaga Limestone in New York rarely exceeds ten to fourteen feet in thickness, but is very persistent, and is readily recognized by its light gray color, crystalline structure, toughness, and its numerous organic remains. This is one of the most valuable building stones in the Helderberg division, and has been largely quarried near Syracuse for the canal. It is an imperishable stone, having great power to resist the action of air, water and frost. It is generally the rock over which the water flows at the water-falls on the Helderberg range, as at Perryville and Chittenango Falls, and is remarkably uniform in its character. It is more extensive than the Corniferous proper, and it is very rich in beautiful and char- acteristic fossils. The limestones used for flagging in Syracuse are Onondaga limestone, brought from the typical localities Onondaga Valley and Split-Rock on Onondaga Hill. "When wet they make a fine display of fossils of this formation. This stone is also used for building everywhere in Central New York. 30 THE GEOLOGIST'S TRAVELING HAND-BOOK. 9 d. Corniferous Limestone. — For all practical purposes, this and the Onondaga limestone may be regarded as one formation. It extends from the Hudson River to the Niagara River, which it crosses at Black Rock, producing there a rapid current at the International Bridge, at Buffalo, and forming a small island just above the water. It extends far into Canada, is seen at Sandusky City, Ohio, and there forms the bottom of Lake Erie. Its color varies from a light grayish-blue to a black, and is sometimes even a light gray or drab. It contains numerous nodules of flint or hornstone, from which it derives its name. But few if any of the layers afford a pure limestone. Its color varies from black to gray, brownish and light blue. It is usually in regular courses from six to eighteen inches thick, separated by layers of hornstone, and sometimes embracing flattened nodules of the same. This rock is crossed by vertical joints in two directions, giving rise to numerous copious springs of water. An upper division, called the Seneca limestone, is now included in the Corniferous . In New Jersey and Pennsylvania it is a blue and sometimes sparry limestone, including bands and nodules of chert. In Canada and the Western States it is a straw-colored and light gray rock. In its general eastern exposures it is generally bluish. Above the Corniferous are no general limestone masses in the Eastern States, but partial deposits only, the most ex- tensive of which is the Tully limestone, found only in Central New York. There is an astonishing change from the top of the Corniferous limestone to the black shales of Marcellus. Two formations more unlike cannot anywhere be found. Both the Corniferous and Onondaga are included hi the Upper Helderberg lime- stone of Pennsylvania, and on the Juniata they measure together only sixty feet. Immediately upon the upper surface of the Corniferous limestone, lies the valuable and extensive MABCELLUS IRON OEE. This consists of carbonate of iron, which occurs ha a bed of pyritous clay, and near the outcrop is changed into limonite. 10. MIDDLE DEVONIAN. 10 a. Marcellus Shales are of a black color, usually dark brown when altered. They greatly resemble the Utica slate in mineral character, and could readily be mistaken for it. They extend in New York from the Hudson River to Lake Erie. The lower part contains some impure black limestone, not in layers or beds, but in interrupted flattened masses. The upper shales are not so highly colored as the lower ones, and are disposed to separate, when long exposed, into small, thin-edged fragments, the result of a peculiar accretionary structure. The fragments often exhibit stains, in spots, from iron rust, and also minute crystals of gypsum, the effect of the action of decomposed pyrites and limestone particles. Some portions of the lower shales are black and friable from email carbonaceous f ucoids. Along the whole line of its outcrop it has been dug into in vain attempts to find coal.— Van U. 147. It has two joint planes, nearly at right angles to each other, causing projecting corners of rock, with smooth nearly vertical surfaces. These are sometimes seen in the upper members also of the Hamilton group, and the septaria or flattened balls of black limestone also occur in the Genesee shales. The lower part is very black, slaty and bituminous, and contains iron pyrites in great profusion. In general character the lower part resembles the Utica slate and is not distinguishable from the 10 c. Genesee slate, in its general aspect. "When long exposed, the lower part weathers to a brownish or iron-rust color, partly from the presence and decomposition of iron pyrites and partly from bituminous matter. In some situations it retains its purely black color, and scarcely separates DESCRIPTIONS OF THE FORMATIONS. 31 into thin laminae after long exposure. In many places this rock contains so much bitumen as to give out flame when thrown upon a fire of hot coals. In Western New York it is fifty feet thick, and farther east much thicker. — H. This important formation carries its broad black outcrops across many of the Middle and Southern States, with comparatively little change, but in the South the black shale is supposed to be Genesee. In the Juniata region of Pennsylvania the Marcellus has been found to measure 875 feet thick, and is there divisible into an upper, middle and lower member, the last consisting of black and brown shales, the surface being stained with iron rust, &c., coated with bituminous matter. In Perry County, Pennsylvania, small coal beds occur in this formation, constituting the oldest known coal-measures, and significantly marking the great change in the general condition of things which either followed or was introduced by the deposit of the Oriskany sandstone. — Lesley. In speculating upon the origin of petroleum, some geologists have sought it in a process of distillation from the black Marcellus and Genesee shales upward, and of condensation in the oil-bearing gravels and fissures of the overlying formations. Chemists, like T. Sterry Hunt, oppose this view on chemical grounds, others oppose it from other considerations of apparently equal weight. It is a curious fact, however, that at this horizon, and in the Upper Helderberg or Corniferous, occur the petroleum deposits of Upper Canada, while the Pennsyl- vania oil-deposits lie at successively higher and higher stages hi the series. 10 b. Hamilton, — This group takes its name from the town of Hamilton, hi Madison County, New York, which contains no other rock, and where the best opportunity exists of examining the members of which it is composed, and where its fossils are in great abundance. It includes all the masses between the upper shales of Marcellus, and the Tully limestone, and is from 300 to 700 feet hi thickness hi New York. It is important from its fine agricultural qualities, its thickness and extent, commencing at the Hudson and extending to Lake Erie. It consists of slate, shale and sandstone, with endless mixtures of these materials, or, in other words, sandy shale and shaly sandstones, and 'is not very easily described. There are three distinct mineral masses as to kinds, but not as to arrangement. The first, in the order of the tenuity of particles, is rather a fine grained shale, often fissile or slaty, its color some shade of blue, usually dark or blackish. The second is a coarse shale, often mixed with carbonate of lime, its color blue or dark gray when fresh, but becoming of an olive or brown color by long exposure to the weather, the color being due to manganese. It has no tendency whatever to separate into regular layers, but when a mass has been long exposed it shows numerous curved divisions, the curves very short and irregular, giving it a very peculiar appearance, which is unmistakable. The third kind, which is not so common as the two first, is a well characterized sandstone, and is generally in the upper part of the group, but more or less mixed with either of the two others. It is often in layers, though rarely straight, and usually short, interrupted, sometimes mixed with carbonate of lime. The colors of this kind are of more various shades, olive, greenish and yellowish. One thin layer produces excellent flagstones, but the group generally is deficient in building materials, the shale of the first kind readily crumbling by exposure to the air ; the two latter kinds alone furnishing building stone. The best is where limestone forms the cement, and sand is hi the 32 THE GEOLOGIST'S TRAVELING HAND -BOOK. greatest abundance. So rare is the occurrence of regular layers in the group, that their absence is a good negative character, and its brownish or yellowish color, externally, or where weathered, a good positive one of the group generally. This applies to the central, but not to the eastern part of the State of New York. It abounds in fossils, and is admirably characterized by them, numerous species and even genera commencing with the group, and ending with it. — Van TL 150. In the western part of the State of New York, instead of sandy shale and shaly sandstone, and even tolerably pure sandstone, as in the east, the sand has diminished and the clay increased. The group, as a whole, presents an immense development of dull olive, bluish-gray calcareous shales, which, on weathering, assume a light gray or ashen tint, some thin portions becoming brownish on exposure. The formation thins out very much in going westward, and at Lake Erie has only half the thickness found at Seneca Lake, and is so different that doubt of the identity of the two might arise, if one judged by the appearance only. The Hamilton is the New York lake formation, the following lakes being excavated in it: Otsego, Cazenovia, Skaneateles, Otisco, Owasco, Cayuga, Seneca, Canandaigua, and the north end of Hemlock Lake. The east end of Lake Erie is also cut out of the Hamilton. The upper part of the Hamilton was called the Moscow shale, from a place between Mt. Morris and Rochester, on the Genesee River. In Pennsylvania the Hamilton shale has been measured on the Juniata, 635 feet thick. It has many hundreds of miles of outcrop, in repeated zig-zags, form- ing, in combination with the Genesee and Portage above it, ranges of smooth, cultivated hills, of an entirely characteristic shape, in long lines of ruffled slopes, regularly indented with short and smooth ravines. This striking topographical feature, maintains itself throughout the mountain-region into Virginia, and still farther south. The abundance of shells, without limestone beds, in Pennsylvania, furnishes a partial clue to the deposit of the (next succeeding) Tully limestone in New York. 10 b. Tully Limestone. — This is the dividing line, easy to find, between the Hamilton and Genesee, being the upper part of the former, and it is important in New York as the most southern mass of limestone in the State. It is only local, and is an impure limestone, fine-grained, usually a dark or blackish blue, often brownish. The usual thickness of the rock is about fourteen feet, and its greatest thickness twenty feet. It makes a good but not a white lime. It receives its name from the township of Tully, in Onondaga County, New York. This limestone often shows an accretionary structure, and a roughed, notched appearance, where its layers separate as in some of the layers of the water-lime. One of the lower layers is thick, the bottom one being frequently five feet in thickness, and it is owing to this circumstance, and to the softness of the shale beneath, that when- ever a waterfall exists, the shale has been washed out to some depth, leaving a chamber or cavern, of which the limestone forms the roof or ceiling. — V. 169. It is a marked geological horizon in Central New York, being the termination of the Hamilton, and is succeeded by shales of a widely different character. It is often thick-bedded, but it is often divided by numerous irregular seams into small fragments. Its color, on first exposure, is blue or nearly black, but weathers to an ashen hue. It is best seen on the Cayuga Southern R. R., where it stands out in the face of the cliffs as a prominent band. It is absent west of Canandaigua Lake and in the eastern part of the state.— H. 212. DESCRIPTIONS OF THE FORMATIONS. 33 10 c, Genesee, (Black yiate of the west and south). — This is a great development of argillaceous fissile black slate. Where its edges only are exposed, it withstands the weather for a great length of time, and often presents mural banks in the ravines, river-courses, and upon the shores of lakes. When the surface of the strata is exposed it rapidly exfoliates in thin even laminae. On disintegration it is often stained with iron, owing to decomposition of pyrites, but in many instances, and the greater number of localities, it retains a deep black color. In this it is distinguished from some beds of black slate in higher situations, which always become stained with hydrate of iron on their edges, and upon the surface of the laminae. In color and general character it greatly resembles the Marcellus shale, and, aside from position, it would be difficult to distinguish the two, in the absence of fossils. It forms no conspicuous feature in the scenery or topography of the general surface. In ravines, and river and lake banks, it is usually seen in connection with the rocks below or above. Its greatest development, and a point where it appears more prominently alone, and the typical locality from which it was named, is at the opening of the gorge of the Genesee, at Mount Morris, where it is seen in the perpendicular cliffs for more than a mile in length. See note No. 112, New York. Another great exposure of the Genesee slate is along the Cayuga Southern Railway south of Ludlowville, where it shows from eighty to one hundred feet thick, with the Tully limestone below and the Portage shales above it. See note 83, New York. The mass decomposes much less rapidly than the soft calcareous Hamilton or Moscow shales below it, and the thin slaty laminae resist atmospheric action a long time. In lithological character it is entirely uniform, having, from Cayuga Lake to Lake Erie, the] same deep black color and laminated slaty structure, nor is there any change in its organic remains. Its fossils in Indiana are precisely identical with those of New York.— Hall 218. There are few formations in Central New York of which the limits are so well denned as this, lying between the Tully limestone below, and the sandstone flags of the base of the Portage group, above. It may also readily be found by the black color and slaty fracture. This shale has been regarded as the main original source of the petroleum in the oil region of Ohio and Western Pennsylvania, but there is reason to believe that part, at least, of the supply of these regions has come from the Corniferous limestone below it, as maintained by Dr. Hunt. All through the western and southwestern states there is always found a BLACK SHALE, which is often the only representative of the Devonian rocks. This is generally considered to be 10 c. Genesee. It is very remarkable that a formation of its composition, of so inconsiderable a thickness, and otherwise so unimportant, should be so widely extended, and retain throughout its character unchanged as a black shale. The researches of Dr. Newbery in Ohio tend to show its fossils to be of theTortage type. It is there 350 feet thick, and he pronounces it to be the equivalent of the Genesee and lower Portage. All the divisions of the Hamilton group, Marcellus, "Hamilton and Genesee, are converted, by exposure, into a deep soil of an excellent quality for agricultural purposes, sometimes quite hilly, but forming smooth land free from stones. Some of the finest wheat-growing and hop-raising land in New York is on the Hamilton, and its rich shales have been carried south by drift and diluvial agencies, and spread over the Genesee, Portage and Chemung, greatly to their improvement. 34 THE GEOLOGIST'S TRAVELING HA^D-BOOK. 11-12. UPPER DEVONIAN. 11 a. Portage. — This group represents an extensive development of shales and flagstones, and finally some thick-bedded sandstone towards its upper part. It is extremely variable in character at different and distant points. In New York the Portage rises sometimes in a gentle slope, and at other times abruptly from the softer shales below. Between the deep north and south valleys, in which the railroads run, the enduring sandstones of the upper part extend far northward, presenting, on the north side, a gentle slope, while on the east and west sides of the same hills, the slope is abrupt, the valleys being bounded by steep hills. The change in the external appearance of the country indicates the commencement of thesi Portage rocks, although they are not seen. Throughout the Hamilton shales, the valleys present gently sloping sides, and the country rarely rises far above the valley bottom. But on approaching the northern margin of the Portage group, the railway traveler sees a gradually increasing elevation of the hills on either side, and an abruptness hi their slope, and in a short time finds himself in a deep valley bounded on either side by hills rising 400 or 500 feet, and in some instances, even 800 feet above the bed of the stream. These elevations often extend several miles unbroken, except by the deep ravines which indent their sides. The higher sand- stones of the group, and in many instances the intermediate ones, produce falls in the streams which pass over them, and some of the most beautiful cascades in the State of New York, and many of the highest perpendicular falls of water, are pro- duced by the rocks of this group, and in none others do we meet with more grand and striking scenery. — J. Hall's Report. The pedestrian often finds his course impeded by a gorge of several hundred feet in depth, such as Watkins Glen and Havana Glen. The Portage upper, middle and lower falls are 66, 110 and 96 feet, and between the middle and lower the rocks rise in perpendicular cliffs 351 feet in height. See note No. 110, New York, as to Portage on Erie Railroad. Taghanic, Hector, and Lodi falls are also in the Portage. These points afford some of the grandest views of scenery, and admirable facilities for geological investigations. The lower division of the Portage is the 1. Ohasagua shales, a green shale, with thin flagstones, and sandy shale. 2. The middle portion is the Gardeau shale and flagstones, a great development of green and black slaty and sandy shales, with thin layers of sandstone, from which are quarried beautiful and durable flagstones. The rocks of this part of the group form high, almost perpendicular, banks on the Genesee. In a westerly direction the sandstones disappear, and the shales increase. 8. The upper part of the Portage consists of the Portage sandstones, thick bedded sandstones, with little shale, while below, the sandy layers become thinner, and shale beds more frequent ; still it must be acknowledged that there is no abrupt change from the beginning of the Portage to the top of the Chemung. In the Portage, the sandstones and shales are less separated than above, and the sandy strata are finer grained, and contain more lime than in the Chemung. Towards the southern extremity of Cayuga and Seneca Lakes, the Portage rocks form cliffs of considerable height, which present alternating hard and soft layers, and the numerous vertical joints present the appearance of solid walls of masonry, in distinct and regular courses. The vertical joints are well seen in Havana Glen. Isolated masses, like huge columns, are often seen, standing out in bold relief from the line of the cliff, being the remains of previously exposed surfaces, which DESCRIPTIONS OF THE FORMATIONS. 35 had crumbled away. On the Genesee River the group is not less than 1000 feet thick. The Portage yields less lime to the soil than the Hamilton, but for pasturage it is superior to it. — H. 224. The great dairy-country of Cortland, and other counties in Central New York, is on the Portage formation. The water of the Portage group is remarkably pure and soft. The Portage rocks have not been recognized in the eastern part of New York. In Ohio the Portage forms the upper part of the Huron shale, and the lower part of the Erie shale, of Dr. Newberry. In Middle Pennsylvania, according to Lesley, the Portage flags are 1,450 feet thick, and the Chemung shales over them, 1,860 feet thick. It is very hard to draw a line of demarcation between them, but, as a whole, the Chemung strata are more silicious and the Portage more argillaceous. The Portage sandstones are flaggy, and, at times, very shaly, and their alternations with shale frequent, the individual beds being thin, and the shales predominant. The Chemung sandstones are more massive, ferruginous and micaceous, with fewer alternations of shale. Brachiopods and other shells are abundant in the upper Chemung shales, while the Portage rocks are almost destitute of animal forms except crinoids and f ucoids. Fucoidal impressions are also very abundant in the upper Chemung, and to the decomposition of this abundant marine vegetation, Lesquereux and others ascribe the origin of the petroleum, at its various local horizons, from the Portage up to the Mahoning sandstone in the Coal Measures. 11 b. Chemung.— These rocks can everywhere be described as a series of thin-bedded sandstones and flagstones, with intervening shales, and mixtures in various proportions of these, and very rarely beds of impure limestone, resulting from the aggregation of organic remains. The whole series weathers to a brownish olive, and even the deeper green of the shales assumes that hue. The shales vary in color from a deep black to olive and green, with every grade and mixture of these. The sandstones are often brownish-gray or olive, and sometimes light gray. More generally, however, there is a tinge of green or olive pervading these strata. Towards the upper part of the group, in some localities, there is a tendency to conglomerate, and in a few places the mass becomes a well defined pudding-stone, with sometimes 150 to 200 feet of Chemung shales and sandstones above it. Towards the upper part of the group the shales are reddish, coarse and fissile, with much mica in small glimmering scales.— Hall 251 . From their red color these have sometimes been mistaken for the Catskill formation. In a few localities in Pennsylvania it contains a very excellent variety of iron ore. As a general thing, however, this formation, and all others above it, up to near the coal conglomerate, are singularly deficient in iron ore. There is little of geological interest throughout the whole extent of the Chemung group. The N. Y. L. E. & W., or Erie Railway, runs for 300 miles west of Susquehanna on this formation, and on nearly the same portion of it. In the northwestern portion of Pennsylvania the celebrated OIL EEGION is in the Chemung, the oil being found stored-up in certain coarse porous sandstones, but these are merely the repository of the oil originating in lower strata. It is a very extensive formation in Southern New York, all the southern tier of counties, west of Great Bend, being covered by it, and it forms an excellent grazing and agricultural country, not quite equal to the Portage, but much superior to the Catskill. In Northern Pennsylvania this formation, as in Southern New York, consists of a vast succession of thin layers of shale, of every hue, from a deep olive and dark green to a light slaty gray, alternating with thin beds of brownish gray sandstones. 36 THE GEOLOGIST'S TRAVELING HAND-BOOK. In Pennsylvania, ninety feet of strata have been carefully studied and measured on Sideling Hill, consisting of alternate beds of red and olive shales and sandstones with Chemung fossils, ripple-marks and f ucoids, and a bed of iron ore long known by the name of the Larry's Creek ore, which outcrops everywhere along the face of the Allegheny Mountain. In the gaps at Blairsville and Connellsville, hi Southwestern Pennsylvania, Prof. Stevenson finds Chemung fossils in what have always been called the Catskill rocks, on account of their being of a red color, and other geologists have made the same observation in Northern Pennsylvania. In Southern New York, adjacent to Pennsylvania, Professor Hall reports 150 feet of red rocks, and then thin gray rocks above with Chemung fossils. The Erie shale of Ohio is the equivalent of the 11 b. Chemung, and the upper part of the 11 a. Portage. At Cleveland, it consists of green, gray and blue shales' soft and fine, with sheets of micaceous, silvery sandstone, from half an inch to two inches in thickness, and flattened masses of argillaceous iron ore. — Newberry. The formation also occurs in Kentucky, and Chemung fossils have been found in Utah and Nevada by Clarence King and Arnold Hague. 12. Catskill. — There is no observable line of demarcation between the Chemung and Catskill. The first sign of change is a more solid or hard rock appearing, often accompanied by red sandstone or red shale. The group consists of light colored gray sandstone, usually hard ; of fine-grained red sandstone, red ghale or slate ; of dark colored slate and shale, of grindstone-grit, and a peculiarly accretionary and fragmentary mass, appearing like fragments of hard elate cemented by limestone, similar to what is well known in England as cornstone. The hard gray sandstone often presents a highly characteristic structure, the layers, one or more inches thick, being disposed in oblique divisions, the divisions usually overlapping each other. This peculiar angular arrangement presents altogether a singular conformation, and forms a highly picturesque rock. — V. You can see this at Ralston, Pennsylvania. The prevailing color of the sandstone is brick-red, though often it is lighter, and sometimes of a deeper color, from a larger proportion of iron, while the coarser parts are often gray, and the shales are green. Beds of green shaly sandstone are interstratified with the red friable sandstone, and these are succeeded by a compact kind of conglomerate rock. The formation expands, and augments in thickness, in passing eastward, till it finally rises in the high and prominent peaks of the Catskill Mountain, nearly 4,000 feet above the sea, from which the formation derives its name. See note No. 9, of New York. The formation extends from this locality southwestward into Pennsylvania, where its outcrop, 3,000 feet thick, in combination with that of the Pocono sandstone above it, 2,000 feet thick, forms a terraced mountain, which surrounds each of the Anthracite coal fields ; the red rocks of the Catskill making the terrace, and the white rocks of the Pocono forming the crest. Piled upon one another in inclined strata, they constitute the bulk of the Catskill Mountains in New York, of the Pocono plateau in Pennsylvania, and the Allegheny, Savage and Cumberland Mountains, far into Virginia and Tennessee. On all the railroads approaching the anthracite coal regions of Pennsylvania one passes over these Catskill rocks, often' for many miles. They contain no coal, but fossil ferns are abundant in some localities. This is the last and upper forma- tion of the Devonian period, and is the foundation on which rests the carboniferous DESCRIPTIONS OF THE FORMATIONS. 37 system. On the Delaware division of the K Y. L. E. & W., or Erie Railway, is an opportunity of seeing the red rocks of the Catskill formation for a number of miles, and also on the N.Y. & O. Midland Railroad north of the Bloomingburgh tunnel. In Pennsylvania it is composed of a vast succession of thin-bedded red and gray sandstones, with thin seams of red, green and mottled shales, also coarse and fine sandstones of various hues of red, brown, gray and greenish ; together with red and greenish coarse silicious conglomerate of white quartz pebbles, the whole being thick bedded, and with an oblique laminated structure. It has not much of interest, either to the scientific or practical inquirer. Its most interesting fossils are fish-remains, which, in the Catskills, extend through 100 feet in thickness of strata. It is the Old Red sandstone of England, lying under the coal. The English New Red sandstone is over the coal, being the Permian, Jurassic and Triassic formations, but these are not found directly over the coal in America. The Catskill formation is a poor one for agricultural purposes. The fields are stony, with many projecting ledges of red rocks. Its sandstones are too hard, and too destitute of lime to produce a fertile soil, and the country covered by it is either a wilderness, or very thinly populated. 13-15 CARBONIFEROUS AGE. 13 a. Lower Sub-Carboniferous. — To a superficial observer, the remarkable substitution of great sandstone and conglomerate deposits, under the coal-measures in the east, for generally limestone deposits, under the coal-measures of the west, must seem inexplicable. But the simple explanation is, that all the sub-carbon- iferous sand-beds of Pennsylvania, formed near the old continent, thin away, and gradually disappear, before they reach the Mississippi; while the five great sub- carboniferous limestones of Illinois, Iowa, and Missouri, formed in a deep quiet sea, on the contraiy, thin away, in going eastward, to 40 feet in Westmoreland County, and 25 feet in Somerset County, Pennsylvania ; and totally disappear before reaching the Schuylkill and Lehigh Rivers. But the same limestone deposits thicken southward to 600 and 1,000 feet in Virginia, and even more in Tennessee. In the Pennsylvania Anthracite country, the next formation above the Catskill is a gray sandstone, called by Prof. H. D. Rodgers the Vespertine. In the second geological survey, Prof. Lesley calls it the Pocono, from the name of the mountain bounding Wyoming Valley, on the south side. The miners call it the second conglomerate. It contains carboniferous fossils, but no coal of value. Invariably the Vespertine is the outside mountain surrounding the coal-basins, the inside one being the 14 a. Pottsville conglomerate, or Millstone grit, and they are separated by 13 b. Mauch Chunk red shale, of Lesley, or Umbra], of Rogers, a soft rock, which forms a valley; and all four, 12. Catskill or Ponent, 13 a. Vespertine or Pocono, 13 b. Umbral or Mauch Chunk, and 14 a. Serai or Pottsville conglomerate, are worthless for farming purposes. THE GEOLOGIST'S TRAVELING HA^D-B'OOK. In Pennsylvania, the Vespertine is a white, gray and yellowish sandstone, alternating with coarse silicious conglomerates, and dark-blue, olive and black slates, and occasionally thin beds of coal. In Michigan, it is the Marshall group, wjiich is mostly a somewhat friable rock, with a reddish, buffish, or olive color, though in some regions becoming gray or bluish-gray. It forms the receptacle into which the brine descends, and accumulates from the next over-lying Michigan salt group, which is 13 b., and also sub-carboniferous. The Waverly group of Ohio is proved, by its fossils, to be of this same age. Its sub-divisions are given at the head of the chapter on Ohio. It produces the Berea grindstones and Waverly sandstone, the finest building-stone in Ohio, if not in the United States. In Tennessee there is a great development of the lower sub-carboniferous group, the 13 a. Barren group, and 13 b. Coral, or St. Louis limestone, formerly called by Prof. Safford the Silicious. Its upper part is the equivalent of the St. Louis lime- stone of Missouri ; the lower is a series of silico-calcareous rocks, characterized by heavy layers of chert, one inch to two feet thick. In Illinois the series of sub-carboniferous strata consists of the 1. Kinderhook group, 2. Burlington group, 3. Keokuk group, 4. St. Louis group, the base of which was formerly called the Warsaw limestone, and the 5. Chester group; all of these are limestones and shale, with some sandstone in the first and last named. These embrace both the lower and upper sub-carboniferous, and are 1,200 to 1,500 feet thick in the south-western part of Illinois, but thin-out in going north, and entirely disappear before reaching Rock Island, where the coal-measures rest on the Devonian limestone. In Iowa the four lower members occur, but the Chester, the thickest member, is wanting, and it is almost entirely wanting in Missouri. , In Pennsylvania a small coal-bed has been opened on the Susquehanna River, in the Pocono sandstone ; and in Huntingdon County more than a dozen small layers of coal may be traced, running through the formation. In Montgomery County, Virginia, two similar coal-beds attain a local importance, being on Tom's Creek, respectively 4 and 8 feet thick. These represent the lower coal of East Kentucky, Tennessee, and Alabama. In Ohio the Subcarboniferous limestone extends through some of the south- eastern counties. It is quite thin, and represents only the upper or Chester member of the group. Two workable seams of coal — the Jackson and Wallston coals — are found below it. — Newberry. 13 b, Upper Sub-Carboniferous. — In Pennsylvania this is the Umbral red shale of Rogers, and the Mauch Chunk of Lesley, sometimes 3,000 feet thick, and here consists almost entirely of very soft red shales and argillaceous red sand- stone, without fossils. It gradually becomes in Virginia a triple mass of buff, green and red shales below, a thick body of light-blue limestone, full of fossils, in the middle, and the upper part blue, olive and red calcareous shales, with massive strata of gray and brownish sandstone. It contains beds of iron ore, which are sometimes very valuable. In the Western States the limestone is the principal rock. It is the limestone of Greenbriar Valley in West Virginia. In Northern Pennsylvania, gray and greenish shales, and gray argillaceous sandstones, are introduced among the red shales, and farther west it consists of two or more strata of soft red shales, separated by a thick body of gray, flaggy sandstone. It is generally well marked in Pennsylvania as the softest of rocks, or simply dry red mud, and is to be noticed by those in search of coal, none of which is ever found in or below it. In Tennessee this formation is the mountain limestone, DESCRIPTIONS OF THE FORMATION'S. 39 beneath the coal-measures. It is a heavy body of limestones and shale, the latter almost one-fourth of the mass ; and there is also a sandstone. See the above description of 13 a. in Illinois. In Middle Pennsylvania, around the Broad Top coal-basin, Prof. J. P. Lesley says there appears, for the first time in this formation, going west, distinct traces of the great mountain limestone formation, which underlies all the southern and western coal-fields, and becomes one of the principal features of the geology of the Rocky Mountains, as it is also of the geology of Europe. The red shale formation is here seen, divided hi two — 910 feet of it above, and 141 feet of it below ; a middle group of red and gray, mottled calcareous shales, and thin lime- stone layers, full of fossil shells — in all 49 feet thick — separating the upper and lower members of nearly pure red shale. The narrow red shale valleys, which surround this Broad Top coal-basin, the Cumberland basin in Maryland, and the three principal groups of anthracite basins in Eastern Pennsylvania, are due to the thickness and softness of this important formation. But while it is 3,000 feet thick at Pottsville, it is but 300 feet thick along the Allegheny Mountain, and less than 100 feet thick around the coal-basins of Tioga and Bradford counties ; and, therefore, instead of making valleys, only marks the top of the mountain steep slopes with a narrow terrace, over which dominates the vertical cliffs o± the outcrop of the coal conglomerate. 14 a. Millstone Grit. — This is a mass of white or yellow sandstone, containing vast numbers of quartz pebbles, and forming a pudding-stone, or conglomerate. It is called the Millstone Grit, from being used for the manufacture of millstones. In Pennsylvania and Virginia the formation is 1,000 feet thick, but becomes reduced to from 10 to 175 feet in Ohio. In Kentucky it is from 50 to 500, and in Indiana from 50 to 100 feet. It is a very peculiar rock, and very wide spread, extending out beyond the coal measures proper, of which it is the base and support. There is not in the entire geological series, says Dr. Newberry, another stratum of rock so widely distributed, and presenting as strongly marked lithological characters, as this. The pebbles are generally of quartz, and well rounded. The sand, which forms the paste, and holds together the pebbles of the conglomerate, is generally coarse, and consists of rounded grains of quartz, which differ from the pebbles only in size. In the anthracite region of Pennsylvania, conglomerate rocks some- times occur between coal-beds, but in the other coal regions they are below all the workable coal-beds. Any cases of thin beds of good coal being found in or below the conglomerate, are exceptional and rare. It does not always maintain its character as a conglomerate, being sometimes an ordinary sandstone. The great lead mines of Joplin and Granby, in Missouri, are in a ferruginous sandstone, the equivalent of the Millstone Grit, or the Chester group, and the Hot Springs of Arkansas are in the Millstone Grit, greatly metamorphosed. 14 b. and c, Lower and Upper Coal Measures.— The series of rock-strata, among which the carboniferous coal-beds are found, are called the Coal Measures, which produce all the best coal of America. They consist of repeated alternations of exceedingly diversified rocks, of every degree of coarseness, from the smoothest fire-clay to exceedingly rough, silicious conglomerates, including within those extremes a wide variety of coal-shales, or mud-rocks, of almost every color and texture — marls, argillaceous sandstones and quartzose grits, also thin bands of limestones, both pure and rnagnesian, and numerous seams of carbonate of iron. 40 THE GEOLOGIST'S TRAVELING HAND-BOOK. The numerous coal-beds themselves, which occur among this series of strata, the most interesting and important of them all, are also found in America in all their known varieties, from the most compact anthracite to the most fusible and bituminous kinds of coal. There is no invariable order for the strata of coal measures, but usually the bed of coal has a fire-clay bed below it, and shale immediately over it. Extending our view over a considerable district, we find these rocks are coarser and more massive towards the east or south-east ; that they become more fine-grained, and less sandy and earthy, and the limestones increase in size and number as we proceed westward or north-westward; that many of the strata become reduced in thickness, and some of them entirely disappear. In Pennsylvania and Ohio the middle portion of the coal measures contains no coal seams, and hence is called the Barren Measures, thus dividing the formation into Upper and Lower Productive Coal Measures. The Lower Coal Measures sometimes contain valuable beds of iron ore. Salt is produced from the Lower Coal Measures in Western Pennsylvania, Virginia, Ohio, Indiana, Illinois, and Kentucky.* 15, Permian. — On the Kansas Pacific, and on the Missouri, Kansas & Texas Railroads, several stations are given in Western Kansas, in the annexed Guide, as being on the Permian formation, which is found in America only in this locality. The Permian rocks, according to Dana, are limestones, sandstones, red, greenish, and gray marlites or shales, gypsum beds and conglomerates, among which the limestones, in some regions, predominate. In Kansas they consist, according to Prof. Mudge, of calcareous and arenaceous shales and beds of limestone. The latter are quite impure, but sometimes massive rnagnesian limestone, of a drab and buff color, is found, which furnishes an excellent building material. Prof. Swallow describes them as a series of limestones, marls, shales, sandstones, conglomerates, and gypsums. The State capitol of Kansas, at Topeka, is built of Junction City limestone of the Permian formation. It is also used at Manhattan, and the build- ings at Fort Riley are also conspicuous specimens of Permian limestone. The rocks here called Permian, are conformable to the coal-measures, and contain many coal-measure fossils, with some not found below. Some geologists think there is no good reason for separating them from the Carboniferous system, of which they form the upper member. Strata of the same age occur in Indiana, Texas, and Mexico, where they contain many new and interesting reptilian remains. In most parts of the United States, however, the coal-measures are not overlaid by these so-called Permian or Permo-Carboniferons beds, either because they were never deposited, or have been removed by erosion. One of the remarkable facts in American geology is the extremely small extent of the Permian and Jurassic groups of formations in the eastern half of the continent. The Permian forms part of the New Red Sandstone of England, lying over the coal. The name is derived from Permia, a province in Russia. * Havin"1 been for twenty-one years actively engaged in mining, transporting and selling coal, the author's business led him to the study of geology, particularly in its economic bearings, and he has given to the world all he knows about coal in another work entitled, " THE COAL REGIONS OP AMERICA • THEIR TOPOGRAPHY, GEOLOGY, AND DEVELOPMENT," with a colored geological map of Pennsylvania, a railroad map of all the coal regions, and numerous other maps and illustrations. By James Macfarlane, Ph. D. One 8vo. volume of 700 pages. Price, in cloth, $5; in sheep, $6. Published and for sale by D. Appletou & Co., New York. DESCRIPTIONS OF THE FORMATIONS. 41 15-18. MESOZOIC. 16. Triassic. — As the railroads from Philadelphia to New York, the greatest lines of travel in this country, run on this formation, it is the most conspicuous and well known in the State of New Jersey, and one in which geologists are now taking great interest. Every observing person must have noticed it, and its aspect and composition are so uniform and well marked, that a description of it here will answer for the whole belt through the States of Pennsylvania, Maryland, Virginia, and North Carolina, from the Hudson River to Deep River, in the latter State, and in the Connecticut Valley. The Triassic consists of dark reddish-brown sandstone, soft, crumbly brown shales, and the upper beds are coarse conglomerates. The almost invariable dip is towards the north-west, at angles ranging from 15° to 25°. Prof. H. D. Rogers thought this uniform dip was not caused by any uplifting agency, but that the rocks were originally laid down in this manner. His theory is that the formation owes its origin to an extensive ancient river, having its source at the eastern base of the Blue Ridge, in North Carolina. Following the remnants of the Triassic formation thence north-east, it gradually, from small beginnings, becomes larger, and has throughout a descending course. At the James River, it is four, at the Potomac six, at the Susquehanna twelve, and at the Delaware, thirty miles wide — the estuary being in the region of the Raritan and the Hudson. In New Jersey, therefore, this river was at its maximum. The uniform dip was supposed by Prof. H. D. Rogers to be the result of the oblique or slanting mode in which the sediment has been laid down by a rapid and steady current washing the material from the south-east side or shore of the river. If it were due to an upheaval, this formation, measured in the usual way, would show an unheard-of thickness. In fact, it is very thin, as is shown in the exposures of limestone in the interior of the belt. All the appearances of the formation indicate, and there is much to sustain his opinion, that it never was tilted. But more recent study of this interesting formation, has proven two facts : (1) that it was originally extensive, far beyond its present limits ; and, (2) that, in at least its middle beds, the original deposits were horizontal, and have been since upturned. The two great belts of Triassic, which cross from Virginia into North Carolina, and one of them into South Carolina, not only have their rocks dipping in opposite directions, showing a long and broad uplifted country between Raleigh and Danville; but certain groups of coal-beds, which, though now dipping in contrary directions, must of course have been originally horizontal. Traces of coal-beds have been found in the Triassic of Pennsylvania, in York county, and at Phoenixville. The intermediate country in North Carolina was, therefore, pre- sumably once covered with the formation, and probably all Virginia, east of the Blue Ridge, and all south-eastern Pennsylvania. The formation is seen passing under the plastic clays of New Jersey, and may extend far under the bed of the Atlantic, being thus connected with the beds of the Connecticut, and even those of the Bay of Fundy. — Lesley. 42 THE GEOLOGIST'S TRAVELING HAND-BOOK. Relics of vegetation are occasionally found in the Triassic, in the form of highly compact and bituminous lignite, the longitudinal sections exhibiting the fibrous structure of the wood, whence it was formed. This lignite, occurring sometimes in seams of two or three inches in thickness, amid dark shales, has been a fertile source of delusion, some persons having been induced by the hope of finding valuable coal-mines, to waste much labor in the search. Although the Richmond and North Carolina coals are Triassic, all the geological facts discoun- tenance the notion that it contains coal in New Jersey and Pennsylvania, the detached fragments of plants, which we meet with in the form of lignite, having evidently been loosely drifted into these sediments from the land. Prof. Emmons says there is nothing which can be regarded as equivalent to the coal measures of the Chatham (N. C.) and Richmond (Va.) series in the northern beds. All this formation was produced at a period subsequent to the great Carboniferous or coal- bearing rocks. There are great numbers of fossil fish in the Trias of New Jersey and Connecticut valleys, among them twenty species of ganoids; also the famous bird-tracks of Dr. Hitchcock. See notes 7 and 8 on Massachusetts. Fossil plants are numerous in the Trias of Virginia and North Carolina. When a large portion of the pebbles are of limestone, in the Triassic con- glomerate, and the cementing red earth which unites them, contains an adequate quantity of the same material, the rock possesses the character of a marble, as on the Potomac River. The Portland stone, or reddish-brown sandstone, so much used for building purposes in New York and other eastern cities, is from the Triassic formation. Extensive mines for copper ore have been wrought in the Triassic, in the State of New Jersey, the ore occurring in every case adjacent to igneous traps, but not in contact with them. All these mining operations have failed, on account of the ore being diffused or disseminated through the mass of the formation, and not being found compacted in regular veins. In Europe, the upper part of the Triassic is called Keuper, or copper. Trap-Dikes. — Numerous parallel ridges and dikes of Trap, some of them many miles in length, and with the elevation of mountains 400 feet high, and ridges of all sizes, traverse the Triassic. Indeed, nearly all the trap-dikes are confined to this formation. The material which composes these rough, rocky ridges, undoubtedly protruded in a state of fusion, slowly and gently through long narrow fissures, produced by the gaping asunder of the rocks* and not by enormous violent disruptions, like those of volcanoes, as the strata through which they passed are very little disturbed, and the dip of the strata is very little affected by them. These trap-dikes have burst through the red shale and sand- stone, after they were deposited, overflowing, while in a melted and highly heated condition, the adjacent beds, and greatly altering their texture, color and mineral aspect. The finest of these trap-dikes is the Palisades, on the west side of the Hudson River, above Jersey City, and extending north of that place. (See note 5, in chapter on New York). The tunnels and deep railroad-cuts through it, hi Jersey City, afford good opportunities to observe the appearance of the stone, the principal constituents of which are hornblende, feldspar, and titaniferous oxide of iron. The little mountain of iron ore at Cornwall, in Lebanon county, Pennsylvania, was thrown up by a trap-dike of the Triassic. DESCRIPTIONS OF THE FORMATIONS. 43 That the trap is not confined, however, to the Triassic rock surface, is beauti- fully shown by the very numerous trap-dikes which cut the Highlands of Orange county, N. Y., and of New Jersey ; by the long, straight, narrow dike which issues from the South Mountain, opposite Carlisle, in Pennsylvania, and cuts across all the formations, from the Potsdam up to the Subcarbonif erous, at the mouth of the Juniata, (see notes 9, 77 and 170, in chapter on Pennsylvania), and especially by the still longer trap-dike recently discovered by Prof. Frazer, hi Lancaster county, Pa. , which not only penetrates the Welsh hills of gneiss, but cuts across the west end of the Chester county (Pa.) Valley, near the famous nickel mine, and reaches the Susquehanna River near the roofing slates quarries at Peach Bottom. — Lesley. The Triassic formation yields the rock-salt and brine of the greater part of Europe, especially in England, Ireland, France, and part of Germany. 17. Jurassic, — The upper portion of what is commonly called the Triassic, on the Atlantic border, may belong to the Jurassic, and is so described by Prof. P. R. Uhler, in the annexed Guide for Maryland ; and by Prof. W. B. Rogers, as Juro- Triassic and Juro-Cretaceous, in Virginia. But there are beds which are undoubtedly Jurassic in several of the eastern ridges of the Rocky Mountains, and other districts of the far West. The rocks are, in general, a gray or whitish marly or arenaceous limestone, with occasional pure compact limestone beds, intercalated with laminated marls. The enormous Dinosauri, recently obtained by Marsh and Cope from Colorado, are from the Jurassic. It is much less import- ant here than in England, where it is subdivided into the Liassic, Oolytic and Wealden. The name is derived from Mount Jura, in Switzerland. 18. Cretaceous,— The Cretaceous formation, along the Atlantic Coast and the lower Mississippi Valley, consists of a series of beds of strata, differing from each other ; but they are all earthy in form, consisting of beds of sand and sandy-clay, except at a few points, where the strata have been cemented by oxide of iron into a kind of sandstone, or conglomerate. In Texas it contains extensive beds of gypsum. In New Jersey it produces the lower two beds of green-sand, called marl, which is extensively used in agriculture, the value of which is due to the potash and phos- phates which it contains. Ninety per cent, of it is a green silicate of iron and potash, the rest being ordinary sand, and it contains no lime. But in Wyoming, Utah, and Colorado, the Cretaceous attains a thickness of 9,000 feet, and its rocks comprise beds of sand, marlite, clay, loosely aggregated shell-limestone, or rotten limestone, and compact limestone. At the middle of the Cretaceous, lie the beds of plastic-clay, outcropping across New Jersey, from Trenton to Amboy, and of great importance to the fire-brick and pottery factories, as described in the Report of Prof. Cook, of New Jersey, for 1876. The name Cretaceous is from the Latin word for chalk, the chalk of England and Europe, being one of the rocks of this period ; but in this country it contains no chalk, except in Western Kansas, 322 miles west of Kansas City, where a large bed exists. It is within one mile of Trego station on the Kansas Pacific Railroad, and is found over a tract 125 by 30 miles. The Cretaceous formation, in the far West, passes upwards into a coal-bearing formation, several thousand feet thick, and covering on the upper Missouri River not less than 100,000 square miles in the United States, besides the portion of the belt extending into the British possessions. The area of other lignitic basin:-; farther south, cannot be estimated, their width being unknown. Dr. Hayclen 44 THE GEOLOGIST'S TRAVELING HAND-BOOK. regards this coal-formation as transitional, or Lower Eocene 19. Tertiary, and in the within Guide for Colorado it is called the Lignitic Group, lying between the Cretaceous and Tertiary. Mr. Lesquereux is of the same opinion as to its Tertiary age, but nearly all other geologists regard it as Cretaceous. In the annexed Guide for Wyoming and Utah, the formation is given at points where the coal is mined— Carbon, Separation, Black Buttes, Point of Rocks, Rock Springs, and Evanston. All the coal now mined in Wyoming is, according to the Guide, in the 18 d. Laramie Cretaceous, which corresponds with Hayden's Lignitic beds. Every division of the Cretaceous is said to be lignitic or coal-bearing, and may some day produce good coal. The Evanston beds are in the Laramie, but the Coalsville beds are probably in the 18 b. Colorado Cretaceous. The Rock Creek coal may be 18 c. Fox Hill.— A. Hague. There is no Carboniferous coal in the far west. The difference of opinion as to the age of the Lignitic or coal-bearing group, arises from the fact of its lying at the transition point from the Cretaceous to the Tertiary, where, as is not unusual, the fossils of both are mingled ; and the con- troversy is as to precisely where the Cretaceous ends, and the Tertiary begins. 19-20. CENOZOIC. 19. Tertiary.— The Tertiary formation of the Atlantic coast is wholly of an earthy character, without solid rocks, consisting of sands and sandy blue clays, and above these yellow and brown ferruginous sand ; also clays and sands imbedding extensive layers of uncemented fossil shells. But as we trace them south and southwest through the Southern cotton-growing states, it becomes more calcareous, consisting of lead-colored sandy clays, and whitish and bluish friable limestone in North and South Carolina and Eastern Georgia. West of that, the upper member consists of two limestone strata, the middle of sand and sandy marl, and the lower part of limestone and marl. H. D. Rogers suggests that on the Atlantic slope, opposite the Appalachian Mountains, the older rocks furnished only sandy and clayey sediments, and the Tertiary deposits composed of the ruins of the former, are of that character ; while farther west a wide expanse of limestones fills the upper valley of the Mississippi, and hence the Tertiary deposits bordering the Gulf of Mexico, and extending up the Mississippi River, are of a greatly more calcareous or lime-bearing character. The cotton-growing lands of the Southern States are chiefly Tertiary. In the central part of the continent, the Tertiary beds are lake sediments, or fresh- water deposits ; while on the west coast they are marine. The Tertiary, in the southern part of New Jersey, furnishes great quantities of bog iron-ore, but bog iron-ore is not peculiar to the Tertiary formation. The upper bed of the green-sand of New Jersey is Tertiary. In the far-west the Tertiary strata are in a greatly more indurated or rocky condition than those of the eastern coast. The 19 a. Eocene consists of beds of clay and sand, with round ferruginous con- cretions and numerous seams and local deposits of lignite, according to Mr. Les- quereux. Also gray and ash-colored sandstone, with more or less argillaceous layers. The 19 b. Miocene consists of white and light drab clays, with some beds of sandstone and local layers of limestone. The 19 c. Pliocene is composed of fine, loose sand, with some layers of limestone, and contains fossil bones of animals, which are scarcely distinguishable from living species. DESCRIPTIONS OF THE FORMATIONS. 45 20i Quaternary. — In no part of the United States are the phenomena of the drift displayed on a grander scale than in the Lake Superior region and on the northern borders of Wisconsin. These drift materials consist of vast accumulations of sand, pebbles and boulders, belonging invariably to rocks lying north or north- west of their present position, with beds of clay of great thickness, evidently brought from a great distance from the north by causes quite different from any now in operation, and which nearly all geologists now believe to have been glaciers. This material is spread over the whole breadth of the North American con- tinent, down to 38° or 40° of latitude, with long tails projecting farther south along the valleys, and it is also spread in the same way over the northern part of Europe. Minnesota and Dakota are very deeply buried in drift. At the south side of Lake Superior the drift is frequently 200 to 300 feet deep, and at the west end of that lake, from 300 to 600 feet thick, and it is 220 feet deep at Fargo, Minnesota. The whole of the lower peninsula of Michigan is covered from 200 to 300 feet deep. To the southward the drift diminishes, and it becomes more evenly spread over the country. It is a singular fact that in the Galena lead region, at the corner of Illinois, Iowa and Wisconsin, bounded by the Mississippi, Wisconsin and Rock Rivers, and in a considerable extent of territory north of it, no trace of transported drift material can be found. The drif tless region is 12,000 square miles in Wisconsin alone, or one-fourth the area of the state. Prof. N. H. Winchell explains its removal by the action of glacial rivers ; but Professors Chamberlin and Irving produce much evidence to show that this district never was covered with drift, the glacier terminating northeast of it in the moraine called the Kettle Range, so named from the great number of kettle-shaped depressions it contains on its surface. No other state has so complete a series of these deposits as Ohio, although not in so heavy a body as at places farther north, and it has been well studied and described by Dr. Newberry. He has classified the drift deposits as follows, in the ascending order : 1 — The Erie clay, a blue or gray unstratified boulder clay, so conspicuous in the North-west, and in which the tunnels at Chicago are dug. 2 — The forest-bed, consisting of a bed of soil, with timber, the remains of an ancient forest, found in Ohio, Indiana, etc., at various depths from the present surface. 3 — Lacustrine deposits, stratified sands and clays in Northern Ohio ; yellow clay, abounding with gravel, in Southern Ohio. The Loess or Bluff formation of the West, Dr. Newberry thinks is simply the silt brought down by the Missouri River, and deposited in a lake or great inland sea. Nearly every recently uncovered ledge of rock iu the drift-covered region has its surface marked with the characteristic striae and furrows. These scratched, polished and grooved surfaces prove the former existence, according to Agassiz's theory, of an ice sheet, many thousand feet in thickness, moving across the continent over open level plains, as well as along enclosed valleys. When softer and harder rocks alternate, they are planed off to one outline or level, as if a rigid rasp had moved over the land levelling all before it. On the contrary, on any surface where water flows we find the softer materials have yielded first and been worn out, while hard rocks will be left standing out, and show greater resistance. Glacial surfaces are highly polished, and are marked with scratches, grooves and deeper furrows. Sometimes the smooth surfaces are like polished marble, showing that the grinding material was held steadily down in firm, permanent contact with the rocky surface against which it moved, as is the case with the glacier. There are many deep ancient channels filled by the drift. 46 THE GEOLOGIST'S TRAVELING HAISTD-BOOK. The usual characteristic marks of glaciers extend, according to Agassiz, over the whole surface of the east half of the continent, from the Atlantic shores to the states west of the Mississippi, and from the Arctic Sea to the latitude of the Ohio, about the 40th degree of north latitude. The glacier marks tend from north to south, with occasional slight inclinations to the east or west, according to the minor irregularities of the surface. The ice of the great glacial period in America is supposed to have moved over the continent as one continuous sheet, over-riding nearly all the inequalities of the surface. The drift spread in one vast sheet over the whole land, consisting of an indiscriminate medley of clay, sand, gravels, pebbles, boulders of all dimensions, so uniformly mixed together that in all parts of the country it presents hardly any difference. The total absence of stratification is one important characteristic of glacial drift. There is no arrangement of the materials according to size or weight, whereas in water the lighter materials are carried farther than the heavier ones, and the heavier ones are at the bottom and the lighter on top. In glacial drift there are large angular fragments by which it may be distinguished from alluvium, and it retains the mud gathered during the journey, and spread through its mass, while the water-worn deposits are washed clean, and consist always of well-rounded pebbles, and there are no scratches on the exposed surfaces of the solid rocks. There appeared in 1878 a map of New Jersey, on which the ice -covered area of that state is laid down, with a description of the terminal moraine, extending from below Belvidere, on the Delaware, first east and then south and southeast to South Amboy, across Staten Island and through the middle length of Long Island. Prof. Hitchcock has traced it thence eastwardly to Massachusetts Bay. Ice covered the highest peaks of the northern mountains of New Jersey, as it did all the mountain crests of Eastern Pennsylvania, to within ten or fifteen miles of Harrisburgh. The southern limit of the moraine has been fixed, by Mr. Carll, at Titusville, in Venango County, and by Prof. White, at Newcastle and Beaver Falls, in Beaver County. There blocks of granite from Canada lie perched on hill-tops of Coal Measures 1,300 feet above tide level. Much of the configuration of the country has been attributed to the action of glaciers, but Professor J. P. Lesley has advanced the theory that most of the topographical features of the Atlantic half of the United States, including the erosion of Lakes Champlain and Ontario, and Georgian and Green Bays, the Blue- grass country of Kentucky, the central basin of Tennessee, the great valley of Eastern Tennessee, Virginia, Pennsylvania and New Jersey, the Taconic valleys of Western New England, and the rich valleys of the interior parts of the Appalachian Mountain belt, have been due, as he thinks, to the underground dissolution of the Lower Silurian limestone formations, and to the consequent breaking down of the Paleozoic roof above the caverns thus excavated ; the process, however, beginning with the limestones of the carboniferous and sub- carboniferous age, being continued by the second subterranean erosion of the Upper and Lower Helderberg limestones, causing Lakes Erie, Huron and Michigan, the smaller New York lakes,* and the "Poor Valleys" of the Middle and Southern Atlantic States, and ending with the subterranean erosion of the Trenton and Calciferous formations, which, he says, is, in fact, seen to be still going on. One of the most notable features of the Western States is the PRAIRIES, which are vast natural meadows, sometimes hundreds of miles in extent, bare of trees *These and other features of Central New York, may have originated from the solution of large beds of rock-salt in the underlying Salina formation, and the consequent subsidence of the strata. DESCRIPTIONS OF THE FORMATIONS. 47 and covered with grass, growing on a deep, rich, comminuted soil of unsurpassed fertility, and with scarcely any exposures of the underlying rock. The Bluff formation along the Missouri and Mississippi rivers is a very peculiar and interesting one, resting upon and later than the drift. It is of a slightly yellowish ash-color, very fine, not sandy, and yet not adhesive. It makes an excellent soil, is easily excavated by the spade alone, and yet it remains so unchanged by the atmosphere and frost, that wells dug in it require to be walled only to a point above the water-line, while the remainder stands so securely without support that the spade-marks remain upon it for many years. Road embankments and excavations upon the sides of roads stand like a wall. The peculiar outline of the bluffs along the Missouri river valley is very interesting. They are often naked, entirely destitute of trees, and tower up from the river bottom-land, some- times more than two hundred feet in height, and so steep, in some places, that a man cannot climb them, yet they are not supported by a framework of rocks, as other bluffs are, and not a rock or pebble of any size exists in them, except a few calcareous concretions where lime-water percolates through them. It is a lacustrine deposit, a shallow lake having, after the time of the Glacial epoch, occupied the whole of the basin of the Mississippi before the great rivers had cut their valleys down to their present depths. — White. In Louisiana the Bluff deposit contains three distinct groups of strata, the Port Hudson below, the Loess next and the yellow loam above, over this is the alluvium, and below them all, the drift.— F. V. Hopkins. Earthy material brought together by the ordinary action of water is said to be alluvia], and the soil or land so formed is called alluvium or alluvion. Diluvium implies the extraordinary action of water. When the drift material covers the surface, of course it forms the soil, but in drif tless regions the soil is an admixture of clay, sand, lime, etc., derived from the disintegration of the rocks beneath, with decomposed animal and vegetable substances. Where neither glacial nor alluvial action has taken place — as in some parts of our Southern States — the rocks as described by Dr. T. S. Hunt, are converted into a deep and strong soil, having undergone a process of decay which has rendered them so soft, sometimes to a depth of twenty feet or more, that they may be readily cut by a spade, although retaining all the veins and layers which mark their original stratification. Without having been broken or ground up, even the hardest rocks have quietly mouldered into a soft, clayey mass, which, from its peculiar structure, has a natural drainage and possesses, moreover, great fertility. The most important of geological formations is the last of all, the soiL On this thin, superficial, earthy covering of our planet, depends the growth of all vegetation, and on that depends all terrestrial animal life. But whether the material forming the soil remains unmoved in the same spot where it was once a solid rock, or is transported bodily by a glacier, or carried from the hills into the valleys by running water, and moved from place to place by larger streams and rivers, it was originally derived from the rock formations, therefore the agricul- tural as well as the mineral resources of the country depends on its geology. This completes, in brief, the description of all that can be seen of the earth, classified in geological order, from the oldest of the rocks, up to the sands which are now daily washed to our feet, by the currents of the rivers and the waves of the sea. 48 THE GEOLOGIST'S TKAYELING HAND-BOOK. REMARKS ON THE FOREGOING DESCRIPTIONS. Paleontologists will be disappointed in this introduction, from which that is omitted which seems to them the most important, and gives the most interest and significance to the subject, namely: the life which they find in the formations, and which serves so important a purpose in their identification and classification. But another book would have been required for that purpose, and it would have been useless without a large number of expensive engravings.* Paleontology is the province of all the text-books on geology, to which this work is a supplement, not a substitute. Its only object is to teach local geology. The descriptions were an after-thought, and they should be regarded as an attempt — to present to the unlearned a first-lesson in geology, in the vernacular tongue, in the hope that it may help on the cause of popular science. They have swollen much beyond the original design, which was definitions, rather than descriptions ; but they will serve to show that paleontology is not the whole of geology, and that the formations are more than a mere cabinet of fossils. There are some things in the descriptions that are not accepted by all geologists. But the scope of the work did not permit any account of the con- flicting opinions on disputed points, or discussions of the history of geological nomenclature and classification. Whether the Oriskany sandstone should be placed at the base of the Devonian, or at the top of the Silurian ; whether Hudson River, Loraine, Nashville, or Cincinnati, is the best name for that formation ; and whether Cambrian should include one, or all, or none of the Lower Silurian formations, and similar questions, seem of less importance to the ordinary reader, for whom the descriptions are intended, than to the professional geologist. All kinds of geological tables are given, for, in accepting the valuable con- tributions of others on local geology, it was necessary to let them have their own way, in the chapters on their own States, in regard to the names and the arrange- ment of the formations. A common number, attached to them throughout the book, serves to identify the formations by whatever name they are called. The valuable part of the book is the Geological Railway Guide, the design or plan of which is original with the author, as it is believed nothing of the kind has ever appeared, in any language. It is the work of many hands, and the hearty thanks of every lover of the science are due to all those who have contributed to its pages portions of the multitude of facts, forming this index to the geology of all important places in the United States and Canada. The reader will never know the amount of time, patience, labor, and care that it has cost. * See " THE ANCIENT LIFE HISTORY OF THE EARTH," a comprehensive outline of the princi- ples and leading facts of Paleontological Science. By H. A. Nicholson. Published by D. Appleton & Co., New York. 8vo., 407 pp. $2.00. A very convenient and excellent manual of Paleontology only. AN AMERICAN GEOLOGICAL RAILWAY GUIDE. 49 ARRANGEMENT OF THE GEOLOGICAL RAILWAY GUIDE AND DIRECTIONS FOR USING IT. 1. The railroads are arranged by states, and the states and territories are arranged in geographical order, with reference to the great lines of travel. But to find a railroad, the reader must depend on the index. Branches are placed after the main line, which is generally first given throughout without interruption. 2. When stations are omitted for the sake of brevity, which is seldom the case, the lists being uncommonly full, their geology will be understood to be the same as that given at the stations between which they occur. If the geology of two adjacent stations is different, it is evident enough that there is a transition from one to the other formation, between the stations, but the change is often so gradual that the transition point cannot be precisely given. 3. A few feet of difference in level sometimes carries the railway track to an upper or lower formation. Railroads, too, sometimes run across narrow, projecting tails, and scalloped points of a higher or lower formation, than that given in the Guide, but which it would occupy too much space to specify. Where too, the strata are disturbed and broken-up, all the formations cannot well be specified for want of room. In such cases the Guide serves only to show nearly where you are, the prevalent formation being given. 4. The hills, bluffs and higher ground in view, are often of a different formation from that given on the railroad, but not always higher in the series. Their elevation is often due to the hardness of the strata, the softer rocks f orming the valleys, in which railways generally run. 5. Keep in mind the succession of the formations, as shown on the Guide, and whether you are going from older and lower to younger or higher strata, or vice versa. Notice the changes in the scenery with the changes in the formations. C. When you come to a new formation, refer to the description of it, in the beginning of the book. But it is difficult to get a clear idea of the formations from even the best description. The reader must see them for himself, and these descriptions are intended to assist him in identifying them, and to impress their character and appearance upon his mind, or to recall them to his recollection after having seen them. 7. By a little close observation of the formations in traveling, you will find that most of them have peculiarities of their own, by which you can always know them, but which, like the features or appearances of persons, cannot be put into words, so that another who has not seen them could also recognize them. The form of the summits and slopes of the hills, and the general aspect of the country, but especially the rock-cuts on the railways, and other exposures of the forma- tions, in quarries, and in the banks and beds of streams, should be closely observed ; and if these are not visible, notice the stone used in buildings, and for the enclosures of fields, the character of the soil, and the fragments of stone mixed through its mass, which betray the nature of the solid rock formation beneath ; observe also whether the rocks lie horizontally or in an inclined position. 50 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. Prof. J. D. Dana's Table of the Geological Formations (1878). Systems or Ages. GBOUPS OB PERIODS. FORMATIONS OB EPOCHS. Age of Man. 20. QUATERNARY. 20. Quaternary. Age of Mammals. 19. TERTIARY. 19 c. Pliocene. 19 b. Miocene. 19 a. Eocene. Reptilian Age, 18. CRETACEOUS. 18 c. Upper Cretaceous. 18 b. Middle " 18 a. Lower " 17. JURASSIC. 17. Jurassic. 16. TRIASSIC. 16. Triassic. Carboniferous. 15. PERMIAN. 15. Permian. 14. CARBONIFEROUS. 14 c. Upper Coal Measures. 14 b. Lower " " 14 a. Millstone Grit. 13. SUBCARBONIFEROUS. 13 b. Upper Subcarboniferous. 13 a. Lower " Devonian, or Age of Fishes. 12. CATSKILL. 12. Catskill. 11. CHEMUNG. lib. Chemung, 1 1 a. Portage. 10. HAMILTON. 10 c. Genesee. 10 b. Hamilton. 10 a. Marcellus. 9. CORNIFEROUS. 9 c. Corniferous. 9 b. Schoharie. 9 a. Cauda Galli. Invertebrates. Upper Silurian. 8. ORISKANY. 8. Oriskany. 7. LOWER HELDERBERG. 7. Lower Helderberg. 6. SALINA. 6. Salina. 5. NIAGARA. 5 c. Niagara. 5 b. Clinton. 5 a. Medina. Silurian, or Age of Lower Silurian. 4. TRENTON. 4 c. Cincinnati. 4 b. Utica. 4 a. Trenton. 3. CANADIAN. 3 c. Chazy. 3 b. Quebec. 3 a Calciferous. 2. PRIMORDIAL OR CAMBRIAN. 2 b. Potsdam. 2 a. Acadian. 1. ARCHJEAN. 1 b. Huronian. 1 a. Laurentian. The numbers and letters of this table are equivalents throughout the book. attached to the same formations or their AN AMERICAN GEOLOGICAL RAILWAY GUIDE. 51 Table of the Geological Formations, ARRANGED FOR THIS WORK BY PROF. T. STERRY HUNT, LL. D., F. R. S. AGES. GROUPS. AMERICAN FORMATIONS. Cenozoic. 20. QUATERNARY. 20. Recent. 19. TERTIARY. 19 c. Pliocene. 19 b. Miocene. 19 a. Eocene. Paleozoic. Me?°' ZOIC. 18. CRETACEOUS. 17. JURASSIC. 16. TRIASSIC. 18. Cretaceous. 17. New Red Sandstone. 16. New Red Sandstone. 13-15. CARBONIFEROUS. 15. Permo-Carboniferous. 14. Coal Measures. 13 b. Mississippi, (Carb. limestone.) 13 a. Waverley or Bonaventure. 8-12. ERIAN OR DEVONIAN. 12. Catskill. 11. Chemung and Portage. 10. Hamilton, (including Cenesee and Marcellus.) 9. Corniferous or Upper Heldb'rg. 8. Oriskany. 5-7. SILURIAN. 7. Lower Helderberg. 6. Onondaga or Salina. 5 c. Niagara, including Cuelph. 5 b. Clinton. 5 a. Medina. 5 " Oneida. 4. UPPER CAMBRIAN OR SILURO-CAMBRIAN. 4 c. Loraine, 4 b. Utica, 4 a. Trenton, 3. MIDDLE CAMBRIAN. 3 c. Chazy. 3 b. Levis, (Tremadoc and Arenig.) 3 a. Calciferous. 2. LOWER CAMBRIAN. 2 d. Potsdam. 2 c. Sillery. 2 b. Acadian, (Menevian.) 2 a. Lower Taconic. Eozoic. 1. PRIMARY OR CRYSTALLINE. 1 d. Montalban. 1 c. Norian or Labrador.* 1 b. Huronian. 1 a. Laurentian. * There are many reasons for believing the Norian to be older than the Huronian.— T. S. H. AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (CAN.) The Dominion of Canada.1 List of the Geological Formations of Canada: 16. Triassic, 14. Coal Measures. 13 b. Mississippi, Carb. I. s. 13 a- Bonaventure,orWaverley 12. Catskill, (Old Red Sandstone.) 1 1 b. Chemung and Portage. 10 b. Hamilton, inc. Mar. & Cen. 9 c. Corniferous, or Up. Held. 8. Oriskany. 7. Lower Helderberg. 6. Salina, or Onondaga. 5 d. Guelph. 5 c. Niagara. 5 b. Clinton. 5 a. Medina and Oneida. 4 c. Loraine. 4 b. Utica. 4 a. Trenton. 3 c. Chazy. 3 b. Levis. 3 a. Calciferous 2 d. Potsdam. 2 c. Sillery. 2 b. Acadian. 2 a. Lower Taconic. 1 d. Montalban. 1 c. Norian or Labrador. 1 b. Huronian. 1 a. Laurentian. 4. Upper Cambrian or Siluro-Cam- brian. 3. Middle Cambrian. 2. Lower Cam- brian. , I 1. Eozoic i. or Crystalline. Ms. | 1 The Grand Trunk Railway. Ms. Riviere du Loup Branch— Con. 0 11 27 36 47 70 91 128 134 149 166 175 186 193 196 217 221 228 235 243 255 262 275 282 292 297 PORTLAND, Me. Yarmouth. Danville June. Mechanics' Fls. South Paris. Bethel. Gorham, N. H. Groveton Jun. N. Stratford. Island Pond. Norton Mills. Coaticook. Westerville. Lennoxville. Sherbrooke. RICHMOND. Lisgar. Durham. Acton. Britannia Mills St. Hyacinthe. St. Hilaire. St. Bruno. St. Lambert. MONTREAL. 1 d. Montalban. u d u u 44 Central Division, OZ 89 Glengarry. 13 a. Bonaventure. i!6. Triassic. 96 Hopewell. 14. Coal Measures. 61 Truro. 13 a. Bonaventure. 14. Coal Measures. 104 112 New Glasgow. Pictou Land'g. 13 a. Bonaventure. e1 H TT CV1 113 Pictou. " 78 Londonderry. 5-7. Upper tellurian. Granite. Shediac Branch. 90 130 Wentworth. Maccan. 14. Coal Measures. 13 a. Bonaventure. 179 184 Painsec June. Dorchester Rd. 14. Coal Measures. u 138 -A.mlicrst» 44 188 Shediac. u 144 Aulac. 14. Coal Measures. 190 Pt. du Chene. 44 147 Sackville. (4 (4 7 Windsor and Annapolis Railway. 159 167 179 Dorchester. Memramcock. Painsec June. 13 a. Bonaventure. 14. Coal Measures. 0 13 30 39 45 Halifax. Windsor June. Newport. Windsor. 2. Lower Cambrian. 44 (Outcrop of Granite.) 13 a. Bonaventure. 179 Weste Painsec June. rn Division. 14. Coal Measures. 185 Humphrey's. (4 44 47 Falmonth. " 189 Moncton. U 44 52 Hantsport. 197 Boundary Crk. 13 a. Bonaventure. 63 Wolfville. 16. Triassic. 200 Salaberry. " 65 Port William. 44 210 Peticodiac. " 70 Kentville. 216 Anagance. " 82 Berwick. 225 Penobsquis. u 87 Aylesford. 232 Sussex. 44 98 Wilmot. 237 Apohaqui. (4 101 Middleton. 243 Norton. 44 107 Lawrenceton. 250 Passekeag. " 115 Bridgetown. 254 Hampton. (4 121 Round Hill. 259 Nauwigewauk. IT j.* 129 Annapolis. 9-11. Devonian. 267 279 Rothesay. St. John. a. Laurentian. " (2 b. Acadian.) 8 European and IV. American R. R. 0 St John's 1 o T aiiv»rfYn + ion Northern Division. 4 Fairville. 1 tl, IJtluI LI1 1 lilll. 1 b. Huronian. 187 Moncton. 14. Coal Measures. 16 Westfield. " Granite. 224 Welford. 44 26 Welsford. a 310 Bathurst. ( 2 Lower Cambrian. ( 13 a. Bonaventure. 36 Enniskillen. 46 Frederickton J 14. Coal Measures. 44 329 Belledune. 2. Lower Cambrian. 67 Harvey. 44 347 New Mills. 44 44 86 McAdam Jun. 1 d. Montal'n. (Granite.) 364 Dalhousie. 5-7. Silurian. 91 St. Croix Jun. 372 Campbellton. 44 118 Danforth. 1 b. Huronian. 395 Mill Stream. 9-11. Devonian. 160 Lincoln. 44 433 Amque. 44 183 Oldtown. 44 448 Sayabec. 2. Lower Cambrian. 206 Bangor. 44 56 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. Maine, New Hampshire, Vermont, Massachusetts, Rhode Island and Connecticut.1 Table of the Geological Formations of the New England States. Cenozoic. Eozoic.2 20. Quaternary. u 19. Tertiary. tt u 20 b. Champlain Clays. 20 a. Glacial Drift. 19 c. Pliocene. 19 b. Miocene. 19 a. Eocene. 1 D. Huronian. u it it n tt 1 C. Labrador. 1 B. Montalban. n it tt 1 A. Laurentian. t( it tt tt 1 p. Merrimack qu. & sch. 1 o. Hydro Mica (Talcose) Schists and Grits. 1 n. Quartzite, Indurated Slate, &c. 1 m. Felsite Porphyries. 1 1. Hornblende Schists. 1 k. Lisbon, Lyman & Swiftwater Series of N. H. 1 j. Franconia Breccia. 1 i. Andalusite Gneiss. 1 h. Concord & Hallowell Granites. 1 g. Lake Winnipiseogee Gneiss. 1 f. Green Mount. Gneiss. 1 e. Bethlehem " 1 d. Porphyritic 1 c. Adirondac " 1 b. K 2, K 3 of Percival. 1 a. E. Mass. Gneiss, &c. Mesozoic. 16. Triassic. 16. Triassic. Paleozoic. 14. Carbonifer's. it 8-10. Devonian. u u 6-7. Silurian. 3-4. Cambro-Si- lurian. u u (1 (( <( « (( 2. Cambrian.2 u 11 tt t< ' 11 11 tt 11 It 14 b. Coal Measures. 14 a. Conglomerate. 10. s. s. pro'bly Hamilton. 9. Upper Helderb'g l.s. 8. Oriskany Group. 7. Lower Helderberg. 6. Port Daniel (Niag'a) 4 d. MagnesianSlate(Em- mons), possibly Cambrian. 4 c. Loraine Shales. 4 b. Utica Slate. 4 a. Trenton 1. s. 3 c. Chazy 1. s. ) Stock- 3 b. Levis 1. s. j" bridge. , 3 a. Calciferous s. s. 2 j. Potsdam ss. si. & qu. 2 i. Clay si. (Georgian Group.) 2 h. St. Johns or Brain- tree Slate. 2 g. Taconic Slate. 2 f. Roxbury Conglom'e. 2 e. Calciferous Mica Schists. 2 d. Staurolite Slate and Schists. 2 c. Quartzite. 2 b. Andalusite Schists. 2 a. Rockingham Mica Schists. Eruptive Rocks.2 K h. Mesozoic Dolerites. J j. Labradorite Diorites. I i. Dolerites. H h. Diorites. G g. Porphyry of White Mountains. F f. Granite, cutting Cambrian Slates. E e. Chocorua Sienite and Granite. D d. Exeter (Quincy) Sienite. C c. Albany Granite. B b. Conway Granite. A a. Trachyte, &c., of White Mountains. 1. Prepared "by Prof. C. H. Hitchcock, State Geoloepst of New Hampshire. 2. The Eruptive Rocks and the subdivisions of 1 and 2 are not necessarily consecutive. 2 c., 2 d. and 2 e. may yet prove to be Silurian. MAINE. 57 Maine. Ms. | Maine Central Railroad. Maine Central Railroad— Continued. Ms. | Androscoggin Division. 0 8 15 20 25 29 37 44 56 60 62 70 81 89 94 101 108 117 125 135 Portland. Falmouth. Yarmouth. Freeport. Oak Hill. Brunswick. Bowdoinham. Richmond. Gardner. Hallowell. Augusta. Riverside. Waterville. Clinton. Burnham. Pittsfield. Newport. Etna. Herman Pond. Bangor. 1 c. Huronian. 1 B. Montalban. Granite. tt 2. Cambrian. 11 1 c. Huronian. 0 9 20 27 34 44 54 67 74 Bath. Brunswick. Lisbon. Lewiston. Leeds Junction. North Leeds. Livermore Falls Wilton. Farmingham. 1 B. Montalban. 1 c. Huronian. 1 g. Lake Gneiss. 2 c. and d. Coos. Knox and Lincoln Railroad. 0 11 18 30 37 45 49 Bath. Wicasset. New Castle. Waterloo. Warren. Thomaston. Rockland. 1 B. Montalban. 1 g. Lake Gneiss. u u u 3 b. Levis Limestone. ." and Quartzite. Bangor and Piscataqnis Railroad. Skowhegan Division. 0 12 21 31 40 53 61 Bangor. Old Town. Alton. Lagrange. Milo. Dover. Guilford. • 1 c. Huronian. 2. Cambrian. OWaterville. HPishon Ferry. 19lSkowhegan. 2. Cambrian. 1 c. Huronian. n Lewiston Division. 0 8 19 29 36 46 55 61 74 84 Portland. Falmouth. Gray. Danville Junc'n Lewiston. Leeds Junction. Winthrop. Readfield. North Belgrade. Waterville. 1 c. Huronian. 1 B. Montalban. 2. Cambrian. European and North American Railway. 0 5 12 18 27 36 45 56 66 79 88 102 115 Bangor. Veazie. Old Town. Costigan. Olamon. Enfield. Lincoln. Winn. Kingman. Bancroft. Danforth. Eaton. St. Croix. 1 c. Huronian. « 7-10. Devonian. Belfast Division. 0 8 12 22 32 34 Burnham. Unity. Thorndike. Brooks, City Point. Belfast. 1 c. Huronian. u « 1 B. Montalban. 2. Cambrian. u (^"Railroads of Maine not found under the Maine heading are to be found in the chapters on Massachusetts and New Hamp- shire. Dexter Division. 0 7 14 Newport. Corrinne. Dexter. 1 c. Huronian. ii (i 58 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N. H.) New Hampshire.3 Ms. | Grand Trunk Railway. Ms. Boston, Concord <& Montreal Railroad. 0 Portland, Me. 1 c. Huronian. 0 Concord. 1 h. Concord Granite. 5 Falmouth. u 10 Canterbury. 2 a. Rockingham Schist. 11 Yarmouth. 1 B. Montalban. 18 Tilton. 1 g. Lake Gneiss. 18 Pownal. 27 Laconia. 1 B. Montalban. 27 Danville Junc'n 33 Weirs. 1 d. Porphyritic Gneiss. 36 Mechanic Falls. 48 Ashland. u 41 Oxford. 51 Plymouth. 1 B. Montalban. 47 South Paris. 59 Rumney. d 55 West Paris. 67 Wentworth. 1 g. Lake Gneiss. 65|Locke's Mills. 71 Warren. « 70 Bethel. 84 Haverhill. 1 c. Huronian. 80 Gilead. 93 Wells River. u & 1 k. Lyman. 86!Shelburne. 103 Lisbon. " & 1 k. Lisbon. 91 Gorham. North Lisbon. 7. Helderberg. 98 Berlin Falls 1 g. Lake Group. 113 Littleton. 2 c. Coos & 7. Helderbg. 103 Milan. u 120 Wing Road. 1 d. Porphyritic Gneiss. 122 Groveton. 1 c. Huronian. 124 Bethlehem. 1 e. Bethlehem Gneiss. 134 North Stratford « 129 Twin Mountain. "(Local Glacier.) 142 Wenlock. Granite. 134 Fabyan's. 1 B. Montalban. 149 Island Pond. u 120 Wing Road. 1 d. Porphyritic Gneiss. 166 Norton Mills. « 128 Dalton. 1 c. Huronian. 175 Coaticooke. 2 e. Calcife's Mica Schist 135 Lancaster. u (Continued in Canada.) 145 Groveton June. it Portland and Ogdensburg Railroad. Concord Railroad of IVew Hampshire. 0 Portland, Me. 1 c. Huronian. 0 Concord. 1 h. Concord Granite. 5 Westbrook. 1 B. Montalban. 5 Suncook. 1 B. Montalban. 11 South Windham 9 Hooksett. 11 17 Sebago Lake. 13 Martin's. 1 g. Lake Gneiss. 24 Steep Falls. 18 Manchester. it 32 Baldwin. 26 Reed's. <( 43 Brownfield. 29 Thornton's. u 49 Fryeburg. 35 Nashua. 1 p. Merrimack Group. 60 66 72 78 North Conway. Glen Station. Upper Bartlett. Bemis. B b. Conway Granite. C c. Albany Granite. B b. Conway Granite. 1 B. Montalban. Sun cook Valley Branch. Hooksett. Pittsfield. 1 B. Montalban. 2 a. Rockingham Schist. 87 Crawford. ci Concord and Portsmouth Railroad. 91 Fabyan's. " 0 Manchester. 1 g. Lake Gneiss. 95 Twin Mountain. 1 e. Bethlehem Gneiss. 8 Auburn. « 101 Bethlehem. 105 Wing Road. 1 14'Lunenburg. « 1 d. Porphyritic Gneiss. 1 k. Lyman Group. 18 24 31 Raymond. Epping. New Market. 1 c. Huronian. 1 p. Merrimack Group. D d. Exeter Sienite. Northern New Hampshire Railroad. 41 Portsmouth. 1 p. Merrimack Group. 0 Concord. 1 h. Concord Granite. Manchester and Lawrence Railroad. 7 Fisherville. 1 B. Montalban. 0 Manchester. 1 g. Lake Gneiss. 14 Nor. Boscowen. ft 8 Wilson's. 1 p. Merrimack Group. 17 Franklin. CI 14 Windham. it 25 East Andover. 11 22Messer's. il 31 44 Potter Place. 1 d. Porphyritic Gneiss. u 26Lawrence. u 52 UrFIUbODu Canaan. 1 1. Hornblende Schist. Manchester and North Weare Railroad. 59 Enfield. 1 e. Bethlehem Gneiss. 0 Manchester. 1 er. Lake Gneiss. 65 Lebanon. CI 11 Oil Mills. it 69 W.R. Junction. 1 1. Hornblende Schist. 19 North Weare. « NEW HAMPSHIRE AND VERMONT. 59 Ms. | Cheshire Railroad. Ms. | Concord and Claremont Railroad. 0 4 10 22 32 37 43 46 54 64 Bellows Falls. Walpole. Westmoreland. Keene. Troy. Fitzwilliam. State Line. Winchester. S. Ashburnham. Fitchburg. 1 B. Montalban. 2 c. & d. Coos sch. & qu. 1 1. Hornblende Schists. 1 e. Bethlehem Group. 4 B. Montalban. 1 a Concord Granite. 1 B. Montalban. « a tt 0 8 12 18 23 27 34 43 48 54 12 20 27 Concord. Mast Yard. Contoocook. Warner. Roby's Corners. Bradford. Newbury. Newport. Kellysville. Claremont. Ferruginous Schists. 1 h. Concord Granite. 1 g. Lake Gneiss. 1 d. Porphyritic Gneiss. *' tt 4 g. Lake Gneiss. « 2 c. Calcifer's Mica Sch. Ashuelot Railroad. Contoocook. Henniker. Hillsboro. 1 h. Concord Granite. 1 d. Porphyritic Gneiss. 1 g. Lake Gneiss. 0 8 15 24 Keene. Westpgrt. Ashuelot. South Vernon. 1 e. Bethlehem Group. « 1 d. Porphyritic Gneiss. 2 c. Coos Quartz. ^"Railroads not found under New Hampshire heading will be found in Massachusetts. 3. The New Hampshire formations are believed to possess thickness as follows : Helderberg, 500 feet; Calciferous Mica Schists, 4,800 feet; Coos Group, 7,300 feet; Cambrian Slates of Connec- ticut Valley, 3,000 feet; Kearsarge Group, 1,300 feet; Rockingham Mica Schists, 6,000 feet; Merri- mack Group, 4.300 feet; Huronian, 12,000 feet; Montalban, 10,000 feet; Lake Winnepisseoga Gneiss, 18,000 feet; Bethlehem Gneiss, 11,300 feet; Porphyritic Gneiss, 5,000 feet. Vermont. Central Vermont Railroad. Ms. | Southern Division. Central Vermont Railroad. Ms. | Central Division — Continued. 127 130 141 145 153 163 171 179 185 Brattleboro. Putney. Westminster. Bellows Falls. Charleston. Claremont. Windsor.4 North Hartland. White River Jn. 2. Cambrian. 2 d. Coos Schist. 2. Cambrian. 1 B. Montalban. 2 c. & d. Coos Group. 2 c. Calcife's Mica Sch. tt 2. Camb. & 1 c. Huro'n. 1 1. Hornbl. Schist. " 239 249 258 266 272 281 286 289 292 306 Northfield. Montpelier. Waterbury. Bolton.5 Richmond. Essex Junction. Winooski. Burlington. Milton. St. Albans. 1 c. Huro'an Soapstone. "and Clay Slate. <( 1 f. Green Mt. Gneiss. 1 c. Huronian. Clay Slate. 3 b. Levis Limestone. 2 j. Potsdam Sandstone. 3 b. Levis Limestone. 2 j. Potsdam Slate. Central Division. Rutland Division. 171 198 205 216 217 223 232 Hartford. Sharon. Roylston. Bethel. Randolph. Braintree. Roxbury. 2. Cambrian. 2 c. Calcifer's Mica Sch. M 1 c. Huro'an Soapstone. « tt "Verde Antique. 0 5 10 22 27 34 39 Bellows Falls. Rockingham. Chester. Cavendish. Ludlow. Summit. E. Wallingford. 1 B. Montalban. 2 e. Calcifer's Mica Sch. I g. Lake Gneiss. 1 c. Huronian. 1 f. Green Mt. Gneiss. it 4. An interesting area has been traced from Lyme, N. H., to Windsor, Vt., about 30 miles long. Portions of it have been removed by the wearing action of the Connecticut. ^ It appears to have been deposited by a powerful current derived from the melting of the glacial sheet prior to the accumulation of terraces. 5. The centre of the anticlinal axis of the Green Mountains. At least eight of the general sections of the Vermont survey show this feature of structure, proving this formation to be older than the Huronian adjacent upon both sides. This structure was denied by Logan for the continu- ation of the Vermont rocks in Canada in his generalizations, but the descriptions of the rocks confirm the views of the Vermont geologist. GO AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (VT.) Ms. ~46 52 69 69 74 79 85 89 93 99 109 113 120 Central Vermont Railroad. Rutland Division— Continued. Ms. | Portland and Ogdensburg Railroad. J 13 21 33 41 49 57 62 70 73 78 Lunenburg. Miles Pond. West Concord. St. Johnsbury. Danville. Walden. Greensboro. Hardwick. Wolcott. Morrisville. Hyde Park. Johnson. 1 k Lyman Gp.& 1 c Hur 1 B. Montalban. 2 c. and d. Coos Group. 2 e. Calcife's Mica Schs. it it a n 1 c. Huronian. d u it East Clarendon. Rutland. Sutherland Falls Brandon. Leicester June. Salisbury. Middlebury. Brooksville. New Haven. Vergennes. Nor.Ferrisburg. Shelburne. Burlington. 3 b. Levis Limestone. 2 e. Calciferous Sand- rock, (Stockbridge. ) 3 c. Chazy Marble. 1 9 a. Eocene Tertiary. 3 c. Chazy Marble. 3 b. Levis Limestone. u 3 c. Chazy Limestone. 4 a. Trenton Limestone. 3 c. Chazy Limestone. a 2 j. Potsdam Sandstone. ci Connecticut and Passumpsic Railroad. 0 5 10 15 22 28 36 40 51 58 61 69 77 90 100 105 White Riv. Jun. Norwich. Pompanoosuc. Thetford. Fairlee. Bradford. Newbury. Wells River. Barnet. Passumpsic. St. Johnsbury. Lyndonville. West Burke. Barton. Coventry. Newport. 1 1. Hornblende Schist. u d 2 c. and d. Coos Gror.p. 1 k Lyman Gp.& 1 c Hur ii K 2 e. Calcifer's Mich Sch. u M (t « ll 2. Cambrian. Western Division 0 St. Albans. 9 Swanton. 2 j. Potsdam Slate. n Northern Division. 0 9 17 St. Albans. East Swanton. Province Line. 2 j. Potsdam Slate. (i 3 b. Levis Limestone. Eastern Division. 0,St. Albans. 10 Sheldon. 18Enosburg Falls. 28lRichford. 1 c. Huronian. ii ii Addison Division. 0 3 7 9 15 16 Leicester June. Whiting. Shoreham. Orwell. Larabee's Point Ticonderoga. 3 c. Chazy. ii " and 3 a. 2 c. Calcife's Sandrock. 4 a. Trent. & La Motte. 3 a. Calciferous s. s. Saratoga and Champlaln Railroad. 0 11 Rutland. Castleton. 2. Cambrian Slates. Harlem Extension Railroad. 8 Granville. 19 Rupert. 26 Salem. 34 Eagle Bridge. t( ii It 0 6 9 13 18 25 30 39 44 51 55 61 Rutland. Clarendon. Wallingford. S. Wallingford. Danby and Mt. Tabor. East Dorset. Manchester. Arlington. Shaftsbury. N. Bennington. Bennington. ,T. & B. Junc'n. 2 a. Calcifer's Sandrock. ii << 3 c. Chazy Marble. 3 a. Calcife's Sandstone. " & Chazy Marble. 3 b. Levis Limestone. « n n n 2. Cambrian Taconic si. MASSACHUSETTS. 61 Massachusetts. Ms. | Eastern Railroad. Ms. Boston and Maine Railroad. 0 2 3 5 11 16 23 28 31 37 39 43 47 51 56 58 63 67 70 75 80 89 94 95 103 108 Boston. Somerville. Everett. Chelsea. Lynn. Salem. Wenham. Ipswich. Rowley. Newburyport. Salisbury. Seabrook. Hampton. Greenland. Portsmouth. Kittery. Elliott. Conway Junc'n. So. Berwick J'n North Berwick. Wells. Kennebunk. Biddeford. Saco. Scarboro. Portland. 20 a. Glacial Drift. 2. Cambrian. ii 20 a. Glacial Drift. 1 a. Huronian, (Porp'y) D d. Exeter Sienite. H li tt 1 A. Laurentian. D d. Exeter Sienite. 1 p. Merrimack. D d. Exeter Sienite. 2. Cambrian. " and Con'y Gra'te. 2. Cambrian. 1 c. Huronian. ii 0 12 18 23 26 32 38 41 45 61 58 68 72 78 85 90 100 109 116 Boston. Reading. Wilmington. Andover. South Lawrence Bradford. Plaistow. Newton. East Kingston. Exeter. New Market. Dover. Salmon Falls. North Berwick. Wells. Kennebunk^ Saco. Scarboro Beach. Portland. 20 a. Glacial Drift. 1 1. Hornblende Schists. 1 A. Laurentian. tt 1 p. Merrimack Group. tt «( (1 D d. Exeter Sienite. u II 1 p. Merrimack Group. « D d. Exeter Sienite. 2. Cambrian. it 1 A. Huronian. it Boston, Lowell and Nashua Railroad. 0 8 15 22 26 29 40 45 51 54 59 I 66 Boston. Winchester. Wilmington. Billerica. Lowell. No. Chelmsford. Nashua. Merrimack. Milford. Wilton. Lyndeboro. Greenfield. D d. Exeter Sienite. 1 A. Laurentian. u 1 p. Merrimack Group. t't « it 1 g. Lake Gneiss. Rockingham Schists. 1 g. Quartz Lake Gneiss 1 g. Lake Gneiss. Boston, Salem and Rockport Divisien. IBeverley. Manchester. Gloucester. iRockport. D d. Exeter Sienite. u tt it 0 10 13 19 28 31 40 Oanvera and Ne Boston. Wakefield. Lynnfield. Danvers. Boxford. Georgetown. Newburyport. (vburyport Railroad. Amesbury Branch. D d. Exeter Sienite. u (I 1 1. Hornblende Schists, d 1 A. Laurentian. 39 43 Salisbury. ID d. Exeter Sienite. Amesbury. 6 20 a. Glacial Drift. Great Falls, Rochester and Conway Branch. 73 79 109 138 Great Falls. Rochester. Wolfboro. North Conway. 1 p. Merrimack Quartz. 2 b. Andalusite Schists. 1 g. Lake Gneiss. B b. Conway Granite. Old Colony Railroad. 0 5 10 15 19 25 31 34 43 Boston. Neponset. Braintree. Randolph. Stoughton. Easton. Raynham. Taunton. Somerset. 2. Cambrian. ii D d. Exeter Sienite. ii u 14. Carboniferous. u Granite. Salem and Lawrence Branch. Salem. ISienite and Diorite. Middletown. 1 1. Hornblende Schists. Lawrence. |l p. Merrimack Group. 6. This and the adjoining towns are chiefly occupied by a profusion of lenticular-shaped drift- hills, believed to be moraines of ancient glaciers, and different from the usual grand moraine of glacial drift. The hills may be 200 feet high, and their longer axis run southeasterly, being parallel with the course of the striae in the neighborhood. In the Merrimack and Connecticut Valley a few have been found having a direction to the south and west-of -south, but agreeing with the course of adjoining striae. AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MASS.) Old Colony Railroad— Continued. Ms. | Division. Boston, Clinton and Fitchburg— Continued. Ms. | Framingham and Lowell Division. 15 20 27 34 45 49 56 68 Holbrook. Brockton. Bridgewater. Middleboro. Assonet. Fall River. Bristol Ferry. Newport. (Continued D d. Exeter Sienite. u 14. Carboniferous. u Granite. 14 a. Conglomerate. 14 b. Coal Measures. n n Rhode Island.) 0 13 20 26 Lowell. Acton. Sudbury. Framingham. 1 p. Merrimack qu.& sch 1 A. Laurentian. it Boston and Providence Railroad. 0 5 9 14 18 24 31 Boston. Forest Hill. Readville. Canton. Sharon. Mansfield. Attleboro. 20 a. Drift Moraine. 1 c. Huronian Porphyry. 2. Cambrian. D d. Exeter Sienite. 14 b. Coal Measures. n South Shore, Duxbury and Cohasset Division. 0 10 11 17 21 39 37 45 49 54 62 69 73 75 84 94 106 120 Boston. Braintree. Weymouth. Hingham. Cohasset. Egypt. Sea View. Duxbury. Plymouth. Fremont. Wareham. Cohasset Narr's Sandwich. W. Barnstable. Barns table. Yarmouth. Harwich. Orleans. Wellfleet. Provincetown. 2. Cambrian. 20 a. Glacial Drift. D d. Exeter Sienite. « « 20 a. Glac al Drift. New York and New England. 0 9 19 23 27 30 36 41 48 53 Boston. Readville. Walpole. Norfolk. Franklin. Wadsworth. Blackstone. Ironstone. Douglas. E. Thompeon. 1 c. Huronian Porphyry. 2. Cambrian. D d. Exeter Sienite. « 1 A. Laurentian. u (( 2 c. Quartzite. 1 B. Montalban. Norwich and Worcester Division. 0 4 11 16 Worcester. Auburn. Oxford. Webster. 1 p. Merrimack qu.& sch u (1 1 A. Laurentian. 0 12 19 25 32 38 Woonsocket Division. 68 71 Falmouth. Wood's Hole. Boston. Weedham. Medfield. Medway. Belllngham. Woonsocket. Nashua and 2. Cambrian. 1 m. Huron'n Porphyry. D d. Exeter Sienite. 1 c. Huronian. 2. Cambrian. Acton Railroad. Boston, Clinton and Fitchburg Railroad. 0 22 28 32 41 48 50 59 Boston. S. Framingham. Fayville. Marlboro. Berlin. Clinton. Pratt's Junction Fitchburg. 1 A. Laurentian. 1 1. Hornblende Schists. 1 p. Merrimack qu.& sch 2. Cambrian. 1 p. Merrimack qu.& sch Granite. 0 5 12 22 24 Nashua. Dunstable. Graniteville. Acton. Concord Junc'n 1 p. Merrimack qu.&sch 1 g. Lake Gneiss. 1 p. Merrimack qu.& sch 1 A. Laurentian. t< Fitchburg and Worcester Division. Worcester and Worcester. Oakdale. Clinton. Harvard. Groton. Hollis. Nashua. Windham. Sandown. Epping. Lee. Barrington. Rochester. Portland. Nashua Railroad. 1 p. Merrimack qu.& sch u 2. Cambrian. 1 p. Merrimack qu.& sch « d it « M (« U 2 b. Andalusite Schists. 1 c. Huronian. OjFitchburg. 5|Leominster. 9 Pratt' s Junction 14 Sterling Junc'n. 26 Worcester. 1 p. Merrimack qu.&sch u (1 " & Granite. 0 10 17 25 31 39 46 57 65 74 80 88 95 147 Mansfield and Framingham Division. Oj Fitchburg. 40Sherborn. 45 Medfield. 49 Walpole. 58 Mansfield. 69;Taunton. 89[New Bedford. D d. Exeter Sienite. u 2. Cambrian. 14 b. Coal Measures. 1 A. Laurentian. i MASSACHUSETTS. G3 JMs. 1 Providence and Worcester R. R. Ms. | New Haven and Northampton R. R. 16 20 25 31 37 44 Woonsocket. Millville. Uxbridge. Northbridge. Millbury. Worcester. 2. Cambrian. ii 1 A. Laurentian. K i< 0 5 8 13 16 23 29 Williamsburg. Florence. Northampton. East Hampton. Southampton. Westfield. Southwick. 3alciferous Mica Schist. D d. Sienite. K 16. Triassic. Middle Cambrian. Calciferous.) Potsdam. Lower Cambrian. t^il d. Montalban. rgjl c. Norian. £ ;1 a. Laurentian. t^g^The right hand marginal figures in the column of formations denote the elevations of the railroad stations in feet above tide water. 1. The State of New York is to the geologist what the Holy Land is to the Christian, and the works of her Palaeontologist are the Old Testament Scriptures of the science. It is a Laurentian, Cambrian, Silurian and Devonian State, containing all the groups and all the formations of these long ages, beautifully developed in belts running nearly across the State in an east and west direc- tion, lying undisturbed as originally laid down. Railroads running north and south pass over a num- ber of the formations in short distances, while those running east and west run for long distances on the same formation, as for example the N. Y. C. & H. R. R. on the 6. Saliua, and the Erie Railway on the 11 b. Chemung. In the eastern part of the State the formations are more irregularly disposed. New York localities are those to which we must always go back as the standard by which any disputed formation of these ages is to be tested. 2. The author has bestowed more of his own labor and research on the local geology of this State, than on any other, having besides diligent study of all the official reports, made personal observations of the exposures of the formations in traveling for many years on all the railroads. It was from making geological notes on the margin of railroad time tables that he conceived the idea of this geological railway guide book for the State, and by calling in the aid of scientific gentlemen of other States, he has been enabled to extend it over the whole United States and Canada. To Prof. James Hall, of Albany, the State Geologist, he is indebted for much information and im- portant corrections in the table of formations and as to some of the localities in this State. 3. N. Y.C. &. H.R. R. R. GRADES CAUSED KY GEOLOGICAL STRUCTUKE.— This railroad xindoubt- edly occupies the finest locality for an east and west railroad in the United States. From New York to Albany the road is level, tide waier extending to Troy, the Hudson River being in fact an estuary. From Albany to Schenectady there is an ascent of 200 feet, Little Falls is 368, Rome 439 feet, and Batavia (the highest station) 887 feet above tide. It has no heavy grades on its main line except at Albany and in the trough of the Genesee at Rochester. It owes its advantages to geological structure, the outcrop of the formations running east and west, and the Salina or Onondaga, Utica and Hudson River soft shales are cut into low valleys through which the railroad and Erie Canal are built. If the formations had run north and south, as they do in Pennsylvania, Maryland, &c., and been turned up edgewise, the hard sandstones would have been high ridges and AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (X.Y.) New York Central and Hudson River Rail- New York Central & Hudson River Rail- Ms. | road. 3 Ms. road— Continued. OjNew York. * ~ 1 d. Montalban, 37 ms. 34 Croton. 1 d. Montalban. lljSpuyten Duyvil. 37 Crugers. 1 a. Lower Laurentian, 12Riverdale.5 38Montrose.6 " 20 miles. 13 |Mt. St. Vincent. 41 Peekskill. |( 15|Yonkers. Ft. Montgom- 0 19|Hastings. 45 ery. " h-1 20'Dobb's Ferry. Highlands. o5* 22jirvington. 25 Tarry town. 49 Garrison's. (West Point.) it V P* 29 Scarborough. 52 Cold Spring. 4 ^ tr 30'SingSing.5 54 'Cornwall.6 tt perhaps mountains to be overcome, as they are everywhere from the Mohawk Valley to Alabama. if even the limestone ridge of the Helderberg range, which bounds this valley on the south, had taken a northern direction, as the 2-4. Cambrian formations do, a tunnel would probably have been necessary. In the western part of the State these Helderberg limestones continue, but not as a prominent ridge. The road via Geneva, runs on them at Auburn, Clifton Springs, &c., but with less favorable grades than the direct road, and at Buffalo they are level with the plain. It should be added that the old Laurentian mountains at Little Falls and at Peekskill have been cloven from top to bottom, thus opening the gateways for the traffic and travel of the West. The popular impression that New York is a level plain like the prairies of the West, derived from traveling on the N. Y. C. & H. R. R. R., is altogether erroneous. There is only a narrow trough through the centre of the State, in which the railroad and canal are located, that is of this level character. 4. New York island is 12 miles Ions and nearly 2 miles wide. The widest point is two and one- quarter miles at 14th St. Below Grand street it gradually becomes narrower as well as at the north end. The lower part of the city, below Wall street, is half a mile wide. The rock of the island is gneiss, except a portion of the north end, which is limestone. The south portion is covered with deep alluvial deposits, which in some places are more than 100 feet in depth. The natural outcropping of the gneiss appeared on the surface about 16th street, on the east side of the city, and run diagonally across to 31st street on 10th Avenue. North of this, much of the surface was naked rock. It contains a large proportion of mica, a small proportion of quartz and still less feldspar, but generally an abundance of iron pyrites in very minute crystals, which, on exposure, are decomposed. In consequence of these ingredients it soon disintegrates on exposure, rendering it unfit for the purposes of building. The erection of a great city, for which this island furnishes a noble site, has very greatly changed its natural condition. The geological age of the New York gneiss is undoubtedly very old, not the 1 a. Laurentian or oldest, nor the 1 b. Huronian, but it belongs to the third or White Mountain series, named by Dr. Hunt the 1 c. Montalban, It is the same range which is the basis rock of nearly all the great cities of the Atlantic coast. It crosses New Jersey where it is turned to clay, until it appears under Trenton, and it extends to Philadelphia, Baltimore, Washington and Richmond, Va., and probably Boston, Massachusetts, is founded on this same formation. 5. On the opposite side of the river may here be seen for many miles the Palisades, a long, rough mountain ridge close to the water's edge. Its upper half is a perpendicular precipice of bare rock of a columnar structure from 100 to 200 feet in height, the whole height of the mountain being generally from 400 to 600 feet, and the highest point in the range opposite Sing Sing 1011 feet above the Hudson, and known as the High Torn. The width of the mountain is from a half mile to a mile and a half, the western slope being quite gentle. In length it extends from Bergen Point below Jersey City to Haverstraw, and then westward in all 48 miles, the middle portion being merely a low ridge. The lower half of the ridge on the river side, is a sloping mound of detritus, of loose stones which has accumulated at the base of the cliff, being derived from its weathered and wasted surface. This talus and the summit of the mountain are covered with trees, with the bare rocky precipice called the Palisades between, and many fine country residences may be seen on the level summit, from which are beautiful views of the river, the harbor and City of New York. Viewed from the railroad or from a steamboat on the river, this lofty mural precipice with its huge weathered masses of upright columns of bare rock, presenting a long, straight unbroken ridge overlooking the beautiful Hudson River, is certainly extremely picturesque. Thousands of travelers gaze at it daily without knowing what it is. This entire ridge consists of no other rock than trap traversing the 16. Triassic formation in a huge vertical dike. _ The red sandstone formation of New Jersey is intersected by numerous dikes of this kind, but this is much the finest. The materials of this mountain have undoubtedly burst through a great rent or fissure in the strata, overflowing while in a melted or plastic condition the red sandstone, not with the violence of a volcano, for the adjoining strata are but little disturbed in position, although often greatly altered by the heat, but forced up very slowly and gradually, and probably under pressure. Subsequent denudation has laid bare the part of the mountain now exposed along the river. The rock is columnar basalt, sometimes called greenstone, and is solid, not stratified like water formed rocks, but cracked in cooling and of a crystalline structure. (See description of the 16. Triassic formation and its Trap Dikes). Here is a remarkable but not uncommon instance of a great geological blank. On the east side of this river the formations belong to No. 1, the first or oldest series of Primary or Crystalline rocks, while on the west side they are No. 16, all the intermediate Cambrian, Silurian, Devonian and Carboniferous formations being wanting. This state of things continues all along the Atlantic coast to Georgia, the 18. Cretaceous or 17. Jurassic taking the place of the 16. Triassic farther south. 6. 38 Montrose to 54 Cornwall. This celebrated passage of the Hudson through the Highlands, is a gorge nearly 20 miles long from 3 miles south of Peekskill to Fishkill, and is worn out of the 1 a. Laurentian rocks far below mean tide water. The hills on its sides rise in some instances as much NEW YORK. 69 IVew York Central 4 c. Hudson River, 27m 57 •< Columbia Cambrian or 3 b. 145 West Albany.11 « / Junction. Quebec group, 26 160!Schenectady110 « 237 58!Fishkill.7 miles. 169 Hoffman's Ferry 4b. Utica, 7 miles. 258 62 Low Point. < 174 Crane's Village". " 262 64 New Hamburg. < 176 Amsterdam. 1 3 4 a. Trenton, 10 ms.271 69 73 Milton Ferry. Poughkeepsie. i 182 187 Tribes Hill. Fonda.1" " quarries, 1 m. 4 b. Utica, 5 miles. 2 9 x 78 Hyde Park. 83 Staatsburg. i i 192 Yost's.14 Two bluffs or noses of Calcif. onLaur'n. 88 Rkinebeck. 8 94JBarrytown. 4 c. Hudson River, 65 m a 195 Sprakers.14 3 a. Calciferous hill. Laur'n at R.R. track. 98 104 Tivoli. Germantown. « u 198 Palatine Bridge. 4 a. Trenton. 3 miles. Hills to north Calcif. 107 109 Livingston. Catskill. « u 200 1 5 Fort Plain.16 4 a. Trenton, 18 ms. & Hudson River. 806 114 Hudson.9 u 206 St. Johnsville. " 811 USStockport. 121 Coxsackie. 123'Stuyvesant. <( :" « 209 East Creek. 2 16 Little Falls.17 223 Herkimer. « 826 1 a. Laurentian, 1 m.S68 4 b. Utica, 28 miles.390 129:Schodack. « 225 Ilion. " S92 133 Castleton. « 227 Frankfort. " 394 142 East Albany. U 237 Utica. i 8 « 403 142 Albany.10 U 24] Whitesboro.19 " . 407 148;Troy.10 " 25 244 Oriskany.80 4 c. Hudson River. 8 m as 2600 feet, and in many places the walls are very precipitous. The rock is gneiss, of a kind that is not easily disintegrated or eroded, nor is there any evidence of any convulsive movement. It is clearly a case of erosion, but not by the present river, which has no fall, for tide water extends 100 miles up the river beyond the Highlands. This therefore was probably a work mainly performed iu some past period when the continent was at a higher level. Most likely it is a valley of great antiquity. Also see notes 17 and 118. 7. Opposite Fishkill is Newburg, which is in the great valley of Lower Silurian or Cambrian limestone and slate. North of that, on the west side of the river, the formations occur in their usual order, their outcrops running northeast and southwest. On the N. Y. C. & H. R. E. R., on the east side, the same valley crosses, and the slates from Pishkill to Rhinebeck are about the same place in the series; but being destitute of fossils and very much faulted, tilted and disturbed, their precise geology is uncertain. See the exposures in the cuts at Poughkeepsie. The high ground to the east is commonly called the Quebec group. See notes 116 and 117. 8. Rhinebeck. A series of great dislocations with upthrows on the east side traverse eastern North America from Canada to Alabama. One of these great faults has been traced from near the mouth of the St. Lawrence River, keeping mostly under the water up to Quebec just north of the fortress, thence by a gently curving line to Lake Champlain or through Western Vermont across Washington County, N.Y., to near Albany. It crosses the river near Rhinebeck 15 miles north of Poughkeepsie and continues on southward into New Jersey and runs into another series of faults probably of a later date, which extend as far as Alabama. It brings up the rocks of the so called 3 b. Quebec group on the east side of the fracture to the level of the 4 c. Hudson River and 4 a. Trenton 1. s. 9. Catskill Mountains. For many miles on this railroad are beautiful views of the Catskill Mountains, 3,000 feet high, (12. Catskill,) several miles distant on the opposite or west side of the river, and which furnish the name for the Catskill formation. The wide valley between them and the river is composed of 11 b. Chemung, 10. Hamilton, 7. Lower Helderberg and 4 c. Hudson River. The geology on the east or railroad side is entirely different. 10. Albany. The clay beds at Albany are more than 100 feet thick, and between that city and Schenectady they are underlaid by a bed of sand that is in some places more than 50 feet thick. There is an old glacial clay and boulder drift below the gravel at Albany, but Professor Hall says it is not the estuary stratified clay. At the south end of the city of Troy the gravel and sand beds are subject to dangerous land slides. 11. The distant mountain to the southwest is the Helderberg range. See notes 24 and 41. 12. Amsterdam. Precipice of 4 a. Trenton limestone back of the town, and quarries at the track. For 40 miles to Little Falls the railroad runs on Trenton limestone 3 a. Calciferous, 4 b. Utica and 4 c. Hudson River irregularly alternating. 13. Branch railroad north to Johnstown and Gloversville, in a valley of Utica slate. 14. Between Fonda and Palatine Bridge are fine bluffs of 3 a. Calciferous. The talus of fragments of rock at the foot of the precipice whiten out in weathering like the stones about an old lime-kiln. It is from the cavities of the Calciferous that the beautiful quartz crystals are produced, of which great quantities have been found. A similar bluff on south side of river. No Potsdam here. 15. The railroad skirts along the base of a ridge of Trenton limestone here and at Fort Plain. 16. At Fort Plain village the transition from the Birdseye to the Trenton limestone is to be seen, the first layers of the latter being of a drab color. 17. At Little Falls for one mile is a rare opportunity of seeing the 1 a. Laurentian formation, 70 AX AMERICAN GEOLOGICAL RAILWAY GUIDE. (X.Y.) New York Central & Hudson River Rail- Ms. | road— Continued. ' New York Central & Hudson River Rail- |Ms. | road— Continued. 251 255 259 264 267 269 Rome.21 Green's Cors.22 Verona. 2 3 Oneida.24 Wampsville.25 Canastota. 2 6 4 c. Hudson River. 439 5 a. Medina, 2 miles.458 4 b. Clinton, 9 miles.460 4 c. Niagara, 3 ms. 482 « ( 6. Salina or Onondaga •] Salt group, 23 ms. / 429 \ 273 275 279 282 289 Th road Canaseraga. Chittenango. Kirkville. Manlius. Syracuse.27 e railroad via Anbi to Rochester for j j 6. Salina or Onondaga ( Salt group. 4 1 1 " 410 " 416 « 409 « 395 rn is better than the Direct geological observation. being a gorge cut by the Mohawk River through a spur of the Adirondack Mountain, which here crosses the railroad. You are now on the bottom rocks of the geological series, for nothing older has ever been found beneath them. The scenery has suddenly changed, and nothing is seen but bare, weatherworn precipices of crystalline rocks, from which all the elements through all the ages, have failed to produce a soil, yet a certain strange interest is attached to them. The oldest picture in the world, the oldest statue or other work of art, would excite the greatest attention, yet what are these in antiquity compared with these grand old Laurentian rocks, the oldest formation and the oldest dry land on the face of the earth, dating far back of the first appearance of either animal or vegetable life of any kind on our planet. The river channel through these rocks is an unequivo- cal example of river erosion, as pot-holes are found at various heights. See also notes 6 and 56. 18. Utica. The 4 b. Utica elate was named from this city. To study the Trenton, Black River and Birdseye limestones at their original, historical localities, change cars at Utica and go up the Utica and Black River Railroad to Trenton Falls. (See the within guide for that railroad). You can then go on to Watertown on these limestones. Return by the Rome, Watertown &Ogdensburg Railroad to Rome or Syracuse, examining the Loraine shales at Adams and Pulaski. 19. From here to Syracuse there is no lock in the canal. This long level is 427 feet above tide. 20. Oriskany. The formation of this name, is not exposed here, but at Oriskany Falls on the D. L. & W. R. R. from which the name is derived, The best fossils of it are found east of Union Springs in Cayuga County. Along the part of the road east of Oriskany, the Utica shale forms the bottom of the valley. The south wall of the valley consists of the outcrops of the 4 c. Hudson River, 5 a. Oneida Conglomerate, 5 b. Clinton, the 6. Waterlime and 9. Upper Helderberg. 21. Rome. No more 2-4. Cambrian formations west of this in New York. From Rome to Buffalo and from Lake Ontario south to the Pennsylvania line all the formations are 5-11. Silurian and Devonian, and they are finely displayed in numerous gorges, ravines, canons and precipices, very regularly disposed in belts of outcrop running east and west. The typical localities from which most of the formations were named, are situated in this district. It is all historical geological ground, and you can scarcely go amiss in looking for fossils. 22. West of Little Falls the lower formations pass abruptly to the north and cross under Lake Ontario into Canada. The 4 c. Hudson River first crosses the valley, and then the Oneida conglom- erate. Other rock formations now appear between Rome and Oneida, which had no existence in the basin east of Little Falls. These are the 5 a. Medina and Clinton, which overlie the Oneida, and form all the south shore of Lake Ontario, and extend across Canada West. Also 5 c. Niagara and the 6. Salina or Onondaga salt group, on which the N. Y. C. & H. R. R. R. runs from Oneida nearly to Rochester. The non-existence of these extensive formations east of Little Falls (the 5 a. Medina, 5 b. Clinton, 5 c. Niagara and 6. Salina), which cover the best part of Western New York, must be owing to the two parts of the State being separated in these early ages by the old Laurentiau ridge at Little Falls into separate basins, in which the rock-forming conditions were different. 23. Verona. The Clinton fossil iron ore crops out on the railroad, but not of a good quality. 24. Oneida. The prominent ridge bounding the valley on the south of Utica. Oneida and Syracuse, called Stockbridge Hill, Pompey Hill, Cazenovia Hill and Onondaga Hill, is the Helderberg range, a continuous mountain 800 feet high, forming the back-bone of the State, and composed at its base of the 6. Waterlime, of the Saliua group, all the members of the 7. Lower Helderberg being wanting as well as the 8. Oriskany sandstone and other sandstones that separate the Lower and Upper Helderberg, except a mere trace. On the Waterlime rests the Onondaga limestone, the most valuable building stone, and above this the Corniferous. Over these three great limestone forma- tions is always found the 10 a. Marcellus shales, the 10 b. Hamilton and 10 c. Genesee, forming the fine fertile country extending south from this ridge. Still farther south is the 11 a. Portage with its glens, gorges and precipices, and 11 b. Chemuug, extending to the Pennsylvania State line. The Oneida conglomerate, which is 30 or more feet thick in Herkimer and Oneida, gradually attenuates in going west, being a grey band, from 4 to 5 ft. thick at Rochester. It was named from Oneida county. 25. Wampsville. Numerous fragments of Niagara limestone are seen mixed with the soil, show- ing its existence underneath. The Niagara limestone and shales which, at Niagara, Lockport and Rochester are 150 feet thick, thin out in going eastward, being only two or three ft. thick at Saquoit Creek near Utica. 26. Canastota. Stop off and take the branch railroad to Cazenovia, rising 750 feet in 15 miles. Fine geological sections of 6. Salina with gypsum beds, 9. Upper Helderberg and 10 b. Hamilton. Magnificent view across Oneida Lake and a beautiful village and lake at Cazenovia. 27. Syracuse. Onondaga Lake, which is in sight and on the north side of the railroad at the west end of Syracuse City, is Smiles long, 1 mile wide; its greatest depth is 60 feet, and its surface is 363 feet above tide water. It is excavated in the red shale of the (6.) Salina formation. The lake is what remains of an ancient much more extensive and deeper excavation, all of which has been filled in with sand, gravel and rolled stones, except the part occupied by the lake. The bottom and sides of the lake are covered with lake marl six feet thick. The ancient excavation underneath answers an excellent purpose as a reservoir into which the salt waters are received and retained, and the marl of the bottom of the lake serves an equally good purpose by separating the fresh water of the lake from the salt water stored away in the basin or reservoir of sand and gravel beneath. There could be no better material for the purpose. Into this basin the various borings NEW YORK. 71 ]\"ew York Central & Hudson River Rail- New York Central r Charlotte. 3 5 15 a. Medina, (Lake, 245 ) Skaneateles Railroad.au 0 3 4 5 Syracuse. Skaneateles Jun Mottville. Kellogg's Mills. Skaneateles. 2 9 (As before.) 9 c. Corniferous. 6 * ° 10 a. Marcellus. 10 b. Hamilton. 89° Fonda, Johnstown & Gloversville Railroad. 0 6 8 22 Fonda. 1 3 Johnstown. Gloversville. Northfield. 4 b. Utica. 4 b. Utica and 4 a. Trenton. 4 b. Utica and 1 a. Laurentian. find its present rocky channel. Even though the drift rose only a foot higher than the rocks, it would as effectually force the water over the rocks as if it formed a mountain. Could the river have once surmounted the drift, its work would have been comparatively easy in wearing out a bed through the old ravine, but till it was able to flow over the barrier it would have no power over it, and must commence its slow work of wearing away the solid rock. The present gulf shows us what it has done since the drift period. J. HALL AND SIR CHARLES LYELL. 40. At Black Rock there is only from 6 to 14 inches of the Onondaga limestone which is of a grayish color, crystalline and contains few fossils. The Corniferous limestone above it is 25 to SO feet containing abundance of hornstone. It is dark colored, fine grained, and in its fresh fracture, and particularly when wet, it presents an almost black appearance, which has given the name of Black Rock to the place. It affords good quarries of excellent building stone. From the occurrence of the Corniferous along the south end of Lake Erie and its dip southward, it seems probable that the bed of this lake has never been excavated below it, and that it now forms the floor beneath the deposit of alluvium. It seems that there are others of the lake bottoms composed of limestone, especially Lake Ontario. See note 71. This is probably for the reason that it received a polish from the action of glaciers which then passed over it, while the resistance of the grit of the sandstones and shales was more favorable for deeper excavation. Lake Erie is 230 miles long, 50 miles wide, 140 feet deep, and and its surface is 569 feet above tide. 41. Batavia is the highest point on the N. Y. C. & H. R. R. R., and one of the highest in Western New York, being 887 feet above tide. This is caused by there crossing the 9 c. Helderberg form- ation, which maintains its elevation although not observable as a mountain range, being overcome by easy grades. Notice the elevations of the railroad crossings of the Helderberg and Hamilton range, although the railroad seeks the lowest points: Buffalo, 576; Batavia, 887; Le Roy, 864; Can- andaigua, 778; Auburn, 715; Skaneateles, 890; Tully, 1249; Cazenovia, 1249; Cooperetown, 1193. When the valleys cut through the limestone, the summit is farther south on the Hamilton or Portage. 42. Lewiston. Tourists should not fail to go down to Lcwiston, the terminus of the Buffalo and Niagara Falls division. This railroad ride, although little known, is one of the finest in the United States. It follows the bank of the Niagara River, affording admirable views of the rapids and the formations displayed in the gulf. Nowhere in the State are there better geological sections. On the Canada side, also the Canada Southern Railway, running to the mouth of the Niagara River at Niagara City, affords one good view of the falls, but no such remarkable sections of the rocks as on the American side, where the railroad overhangs the fearful torrent of the river for several miles. 43. Knowersville. The Helderberg mountain shows finely on the left or southwest side of the railroad opposite Guilderland and Knowersville. The railroad passes through it between that place and Duanesburgh. The mountain is capped by the 7. Lower Helderberg limestone forming a steep precipice along its summit, and this rests on the 4 c. Hudson River slates. Back of Knowersville two notches are cut out of the mountain by two streams, leaving a picturesque, fortress-like bluff of the limestone. The Helderberg formations are named from this mountain. 44. At Howe's Cave large quarries on the railroad track. Good place to examine Lower Ilelderberg limestone and to collect fossils. The cave is an old underground water channel, "and is several miles long. Notice that the limestone at Cobleskill is Upper Helderberg and that at Howe's Cave Lower Helderberg. On no other railroad can you see them both. 45. Cooperstown is seated at the south end of Otsego Lake on a a dike of alluvium. This lake is a handsome sheet of water seven miles long, one and a half wide, 1193 feet above the ocean. It has a high ridge of the Hamilton group on the east side, a low and interrupted range of the pame on the west side, and an elevated projection on the northeast end. This lake is one of the head waters of the Susquehanna, the valley spreading out to the southwest. 46. Sharon Springs. All the large sulphur springs of the State, Avon, Clifton, Richfield, &c., and many small ones, rise from the waterlime. 47. Cherry Valley. The railroad is on Corniferous, but the cliffs and gorge are 7. Lower Helder- berg. Marcellus and Hamilton form the hills on the south. 74 AX AMERICAN GEOLOGICAL KAIL WAY GUIDE. (X.Y.) Delaware & Hudson Canal Co.'s Railroads. Ms. | Albany and Susquehanna Eailroad. Delaware and Hudson Canal Company's Railroads— Continued. Middleburg & Schoharie, and Schoharie Valley Ms. | Railroads. 0 G 7 11 14 17 24 27 31 36 39 45 50 57 62 67 70 75 76 79 82 90 95 99 103 108 114 119 127 132 135 142 Albany.10 Adamsvillo. Slingerlands. ;New Scotland. ! Guilder-land. Knowersville.43 Duanesburg, Quaker Street. Esperance. Central Bridge. Howe's Cave.44 Cobleskill. Richmondville. East Worcester. Worcester. Schenevus. Maryland, j Cooperstown ( Junction.45 Colliers. Emmons. Oneonta. Otego. Wells Bridge. Unadilla. Sidney. Bainbridge. Afton. Nineveh. Tunnel. Osborn Hollow. Port Crane. Binghamton. 4 c. Hudson River. c ( c ' & Utica. t « 7. L. Helderberg. ti 8. Oriskany. ^ 9 c.U. Helderberg l.s. 3 10 a. Marcellus. " & 10 b. Ham. o 10 b. Hamilton. E « — 0 3 6 9 12 Central Bridge or Schoharie Junction. Vromans.48 Schoh'eC.H.49 Borst's. Middleburg. > 4 c. Hudson River. t< 9 b. Schoharie grit. 7. Lower Helderberg. 10 a. Marcellus. Nineveh Branch. 119 122 127 130 133 140 Nineveh. Centre Village. Ouaquaga. Windsor. Comstock. Jefferson June. 11 b. Chemung. CO 11 a. Portage. u ti 11 b. Chemung. u it (i «( u 12. Catskill, synclinal. lib. Chemung. K « (( « « 868 Saratoga and Champlain Division. 0 Albany.10 6 West troy. 9Cohoes.50 12 Albany June. 4 c. Hudson River. < ' Falls,70ft. < 0 6 12 25 32 43 49 67 60 64 71 Troy. Albany June. Mechanicsville. Ballston. Saratoga. Gansevoorts. Fort Edward. Smith's Basin. Fort Ann. Comstock's. White Hall. t t 4 a. Trenton and Calcif. u " quarries. ii 2 b. Potsdam. Fine surface exposures for 4 miles. 2 b. Potsdam. Fine exposures on 1 a. Laurentian gneiss. 0 15 29 Saratoga. Ballston. Schenectady. Quaker Street. j 3 a. Calciferous and | 4 a. Trenton. 4 c. Hudson River. « 237 U 0 7 10 14 20 22 24 White Hall.51 Chubb's Dock. Dresden.58 Putnam. 3attuiwa. Mt. Defiance.) <\ Ticonderoga. Ticon'ga Creek, Tunnel.) Addison June. " Lake, 96. 3 a. Calciferous. "& 1 a. Laur. back. 1 a. Laurentian. ii 3 a. Calciferous bluff. 4 a. Trenton. Valley. 1 a. Laurentian. u outlet of Lake George.) 4 a. Trenton. " large valley. 45|Cobleskill. 50 Hyndsville. 54 Seward. 59,SharonSprgs.46 68 Cherry Valley47 9 c. Upper Helderberg. «( u 7. Lower Helderberg. 9 c. Cornif. & Marcellus. Cooperstown and Susquehannah Valley R.R. 75 Junction. 91 Cooperstown45 11 a. Portage. LO b. Hamilton. 1193 48. On either side of the valley, according to Prof. Hall, is the following section : Pyritiferous shales, (Clinton group) ; Coralline limestone, (Niagara) ; Waterlime, (Salina); Tentaculite; Pentam- erus; Delthyris shaly limestone; Upper Pentamerus, (Lower Helderberg); Oriskany; CaudaGalli; Schoharie grit; Onondaga limestone, (Upper Helderberg). At Vromans are cliffs of Hamilton, " Vroman's Nose." 49. The Schoharie grit formation was named from this place. The fossils peculiar to it are found in the mountain one and a half miles northwest and northeast of Schoharie. 50. See from car windows the great falls of Mohawk, 70 feet high, over Hudson River slate. 51. Whitehall is usually called the head of Lake Champlain, but the lake for 15 miles is rarely more than 100 to 150 yards wide. It is in fact a mere channel between mud flats and clayey alluvium. Like Champlain is 112 miles long, 600 feet deep, and the surface being only 96 feet above tide, it NEW YORK. 75 Belawai-e and Hudson Canal Company's Railroads. Ms. | Saratoga and Champlain Division— Cant. Delaware and Hudson Canal Company's Railroads— Continued. Ms. | Ausable Branch. 32 40 51 54 57 64 77 84 90 95 99 100 105 111 118 Crown Point. Port Henry.58 (Tunnel.) Westport.54 Wadham's Mills Whallonsburgh. 55 Wihsborough55 Port Kent.56 (AusablelU57 Valcour. Plattsburg. 5.7 Beekmantown. West Chazy. Chazy.5 s Sciota. Mooer's June. Champlain. 1 a. Laurentian bluff 4 a. Trenton. 1 a. Laurentian bluff. 4 a. Trenton, 7 miles. Valley chiefly 1 a. Laur. 1 a. Laurentian. a a n f For 1 3 miles deep cuts I through bluffs, 1 a. 1 Laurentian. Beau- (_ tiful sections. 1 a. Laurentian ends. 2 b. Potsdam. ( 2 b. Potsdam. Heavy \ beds of sand & clay. 3 4 a. Trenton and I 3 c. Chazy. n % " >-i (3 a. Calciferous & 0 (3 c. Chazy. g 0 5 8 10 14 17 20 Plattsburg. Salmon River. Lapham's Mills. Peru. Harkness. Ferronia. Ausable. 5 7 2 b. Potsdam. 3 a. Calciferous. 1 a. Laurentian. u It ft Glens Falls Branch. 49 Fort Edward. 53 Sandy Hill. 55|Glens Falls. 4 a. Trenton. it " Utica slate above. Lake George Branch. 22 26 Ticonderoga. Baldwin on Lake George.59 1 a. Laurentian. 1 - Adirondack Railroad. OSaratoga. 6 Greenfield. 10 King's.60 13 South Corinth. l7|Jessup's Land'g 22Hadley.60 30 Stony Creek. 36 Thurman. 44 The Glen. 47Washburn's Ed 50 Riverside. SS'Xorth Creek. 4 a. Trenton & 3 a. Cal. 2 b. Potsdam. it u it 1 a. Laurentian. u (1 a dy. " u 99 122 West Chazy. Rouse's Point. (Con, in Canada, u o CO « a see Grand Trk. R'y.; 8 extends 500 feet below the level of the ocean. Its bed is a deep chasm in the Laurentian or Primitive rocks. On the west side, where the mountain ranges reach it, the slope is abrupt, but on the east side it is longer and more gradual. At many places the lake is bordered by steep banks of blue and yellowish brown clay and yellowish brown sand, rarely over 15 feet thick, but its greatest height is 100 feet at Burlington. It contains marine fossils in the mixture of clay and sand, but none in the clay beneath. This drift formation extends north to the mouth of the St. Lawrence River. In Albany County it is an immense mass and is known as the Albany clay. 52. From Dresden to Port Kent, 67 miles, the Laurentian hills are the western boundary of the valley of Lake Champlain. But at many points this mountain ridge recedes from the lake, leaving nooks and valleys, in which are patches of 3 c. Chazy and 4 a. Trenton limestone along the railroad. 53. The magnetic iron ore mines back of Port Henry are worth a visit, the bed of the ore being more than 100 feet thick. The mining of these heavy beds is on a grand scale. 54. From 51 Westport to 77 Port Kent, the formation, according to Dr. Hunt, is 1 c. Norian or Upper Laurentian. 55. At the village of Essex, on the lake and between Wallonsburg and Willsboro stations, is a bold bluff, 100 to 200 feet high above the lake, of 3 c. Chazy limestone. 56. The Adirondack Mountains commence at Little Falls, rising suddenly from the Mohawk Valley, and run northeast to Port Kent on Lake Champlain. The most elevated peak, Mount Marcy, is 5,467 feet high, the summit being just upon the region of perpetual frost. There are four other peaks 5,000 feet high, each distant about 6 miles from the other. This group of Adirondack Mountains is the culminating point of the State around the sources of the Hudson, Ausable, Racket and Black Rivers, and dividing the north half of the State into two separate geological basins. They are directly west of Westport, several miles to the west of the railroad. Only a glimpse of one of them can be had from the railroad. In the Adirondack pass in Essex County, is a perpendicular precipice or naked wall of rock 1,000 feet high and more than half a mile long. There is not probably in the Eastern States an object of the kind so vast and imposing as this. Emmons, 218. 57. Stop at Plattsburg and visit the Ausable valley, which is interesting for the Ausable chasm, where for at least two miles the Ausable River, a large and rapid stream, is compelled to flow through a rocky gorge in the 2 b. Potsdam sandstone with perpendicular walls of 100 feet with a width only varying from 20 to 40 feet. Here the linyula antiqua is found in great abundance, and there is here a better development of the Lower Silurian or Cambrian rocks than in any other part of the State. Emmons, 267. 58. The 3 c. Chazy formation was named from this locality. See Note 55. Also as to Isle La Motte see Note 67. 59. The rock which forms Diamond Island in Lake George is a good example of 3 a. Calciferous. Lake George is 30 miles long, H miles wide, and its surface is about 80 feet above tide water. 76 AX AMEKICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) Central Vermont Railroad. Ms. | Utica and Black River Railroad— Con. JMs. [ Ogci6iisuurg & LQ.KC Ciiuiripl&in Jt'ulrouu. 25 East Steuben. 4 a. Trenton. 0 Ogdensburg. 3 a. Calciferous, 20 ms. 28 Alder Creek. H 9 Lisbon. « 35 Boonville. 6S " 1120 17 Madrid. " 38 Leyden. « 25 28 Norwood. Knapps. it 2 b. Potsdam, 53 miles. 42 45 Port Leyden. Lyons Falls.64 it 1 a. Laurentian, 1 mile. 36 Brasher Falls. u 51 Glendale. 4 a. Trenton, 28 miles. 41 47 Lawrence. Moira. u 54 58 Vtartinsburg. 6 5 Lowville. M 65 Bangor. " 66 Jastor Land. (( 61 Malone. u 70 Deer River. M 73 Chateaugay. 1 a. Laurentian, 5 ms. 74 Carthage/6 1 a. Laurentian. 81 Cherubusco. 2 b. Potsdam, 36 miles. 81 Great Bend. 4 a. Trenton, 18 miles. 89 Ellenburgh. n 83 Felt's Mills. 90 Dannemora. tt 85 Black River. " «87[River. 97 103 106 Altona. Mooer's Forks. iMoocr's Junc'ii 44 it 3 c. Chazy. 92 Watertown.67 Tren., Birdseye & Black 104 Sacket's Harbor u 114 118 122 126 133 Champlain. Rouse's Point. Alburgh. Alburgh Springs Swanton. 3 a. Cal. & 3 c. Chazy, 4 3 c. Chazy, 2 ms. [ms 4 b. Utica, 13 miles. u 4 c. Hudson River. 74 92 98 101 108 Carthage. 6 6 Theresa June. Means Corners ^afargeville. Clayton. 1 a. Laure'n, 6 ms. 721 2 b. Potsdam. 3 a. Calciferous. ti 2 b. Potsdam. 136 S wanton June. U 74 1 Carthage.66 1 a. Laurentian, 1 mile. 142 St. Albans,Vt. 2 b. Potsdam, 6 miles. 83 Sterlingsville. 3 a. Calciferous, 1 mile. Utica and Black River Railroad. 87 90 Philadelphia. Shurtliff's. 2 b. Potsdam, 8 miles. " Iron ore. 0 Utica. 4 b. Utica, 12 miles.4 °s 93 Theresa Junc'n. tt 6 Marcy. <( OK Thprp^n (la. Laurentian and 10 Stittville. tt yo 1 I1C I Coil. ( 2 b. Potsdam, 18 ms. 12 Holland Patent. 4 a. Trenton, 32 miles. 101 Redwood. <( 16 Trenton. it 108 Rossie. " Lead mine. 18 Trenton Falls62 a 113 Hammond. 2 b. Potsdam, 10 miles. 19 Prospect.62 M 118 Brier Hill. " 21 Remsen. u 123 Morristown. " & 1 a. Laur'n. GO. This railroad cuts through Trenton, Calciferous and Potsdam within less than 10 miles of Saratoga. Fine sections of ripple marked Potsdam in railroad cut in Greenfield. The Ausable chasm is repeated at the High Falls of the Hudson at Luzerne or Hadley station on the Adirondack Railroad, in Warren County, where the river flows for a mile through a gorge at the junction of the Potsdam sandstone and the gneiss. The walls rise in some places to a height of one hundred feet. 61. Potsdam. This is the locality which gave the name to the Potsdam sandstone. See the description of that formation in another part of this volume. 62. Trenton Falls. For about three miles between Trenton Falls station and Prospect Nation and a mile or two east of the railroad, the East Canada Creek has cut a passage through the Trenton limestone, the sides of the excavation rising vertically with an average height of over 100 feet. In this passage are the Trenton Falls or Cascades which have given so much celebrity to the place, justly meriting by their number, beauty and position, the admiration they receive. Including the one at Prospect Village there are six falls, five of which are placed at intervals somewhat regular and occupy the middle part of the excavation. The rock is in thin layers of from 6 to 10 inches in thickness, separated by thin layers of shale, and contains trilobites in prodigious numbers. The formation derives its name from this place. It is 500 feet thick and about seven miles in breadth. Going east or south it grows thinner and is about 30 feet thick in the Mohawk Valley. The stone quarried at Prospect and used at Utica, is the upper part of the Trenton, which is here of a gray color and of a more solid and crystalline structure and appearance. Going on north by this railroad you travel for many miles on a terrace of the limestones of this group, forming the banks of Black River, which has its rocky channel in this formation all the way to Watertown, with three important falls at Lyons, Carthage and Watertown and many cascades. Very picturesque scenery and interesting geology, with an abundance of fossils. 63. Boonville. The first range or cliff of limestone on Black River, extending by the side of the river from opposite Boonville to Watertown, is the Birdseye limestone. It is of a light dove color which by long exposure to the weather becomes of a light ash gray or white. It is in thick, straight layers, with straight, vertical joints, giving the rock when quarried the appearance of a wall, and it has a compact grain and smooth fracture. 64. At Lyons Falls, Black river falls 63J feet over gneiss or 1 a. Laurentian rock. Thence to Carthage it falls but 9 feet and there is another fall over gneiss rock. 65. The high hills west of Martinsburg are of the Hudson River group. NEW YORK. 77 Rome, Watertown and Ogdensburg Rome, AVatertown & Ogdensburg R.R. — Con. Ms. | Syracuse Division. Ms. Railroad. 0 Syracuse. 2 7 j 6. Salina or Onondaga 1 Salt group. 885 0 Rome. J4 c. Hudson River. 4 8 9 11 Taberg. "11 miles. 5 Liverpool. K* (5 a. Medina and 8 Woodward. 5 c. Niagara. 14 McConnellsville -' Oneida Conglom- 11 Clay. 5 b. Clinton. ( erate, 31 miles. 15 Brewerton.i02 if IS Camden. 23 West Camden. 18 22 Central Square. Mallory. 5 a. Medina. it 28|Williamstown. 24 Hastings. a 31|Kasoag. 636 27 Parish. (4 37 Albion. 31 Union Square 4 c. Hudson River. 42Rlchland.68 34 Holmesville. ft 47 Sandy Creek. 4 c. Hudson River, 12m 39 Pulaski.70 n 52 Mannsville. " Lora.shales, 45 Sandy Creek Ju. u 54 59 63 Pierrep't Manor. Adams. 6 9 Adams Centre. " deep gulfs. 4 a. Trenton limestone. it Lake Ontario Division, West. OOswego.71 ;5 a. Medina. Lake^245. 72 Watertown Jun 73 Watertown.67 78|Sanford's Corn's 83jEvans' Mills. 90|Philadelphia. 96 Antwerp. 101;Keene's. Tren., Birdseye & «S Black River. £ 3 9 7 3 a. Calciferous. la 2 b. Potsdam. 02 1 a. Laure'n, Iron ore. a, it 4 7 10 13 16 20 26 J^urniss. Wheeler's. Bannibal. Sterling Valley. Sterling. Red Creek. Wolcott. b | 5 b. Cl nton. Fossil iron ore. 108 Gouverneur. 2 b. Potsdam. 31 Rose. HSRichville. 1 a. Laurentian. 36 Alton. 1 23 DeKalb Junc'n " Iron ore. 38 Wallington. 1 29 Rensselaer Falls 2 b. Potsdam. 41 Sodus. 134 Heuvelton ii 47 Williamson. 142 Ogdensburg. 3 a. Calciferous. 52 56 Ontario. Union Hill. Fossil iron ore. 1C 42 Richland. 6 8 5 a. Medina. 59 Webster. 47Pulaski.70 4 c. Hudson River. 64|Pierce's. 50 Sandhill. 5 a. Medina. 66,Sea Breeze.85 5 a. Medina. 55 Mexico. " 1 70 Charlotte.35 60 New Haven. tt 76 Greece. 63Scriba. u 80 North Parma. 7liOswego.71 Lake, 245 83 East Hamlin. 86 Hamlin. 73 Watertown. 6 7 4 a. Trenton. » 9 7 90 East Kendall. 72 Watertown Jun. it 92 Kendall. 76 Brownville.72 ii 97 East Carlton. 86 Chaumont. it 100 Carlton. 89 Three-Mile Bay. tt 103 Waterport. 93 Rosiere. a 106 Carlyon. 97 Cape Vincent. « 250 110 Lyndonville. 123 De Kalb Junc'n. 1 a. Laurentian. 114 118 County Line. Somerset. 131 Canton. 2 b. Potsdam. 123 Hess Road. 142 148 Potsdam.61 " Potsdam Junc'ni3 a. Calciferous. 127 128 Newfane. Coomer Road. 132 Wilson. 147 Rawsonville. 156 Lewiston. 4a Lake, 245. 66. The Laurentian rocks cover the whole of the country east of the Black River and the later formations west of the river, the opposite sides forming the strongest contrast imaginable as to rocks, soil, vegetation and population. 67. At Watertown the banks of the Black River present fine sections of the limestone visible from the car windows, showing the Trenton limestone, Black River limestone and the Birdseye limestone. There is a mass forming the Black River sub-division, known to quarrymen as the seven feet tier, lyine between the Birdseye and Trenton limestone. At the Isle LaMotte, near Chazy, in Lake Champlain, it is a black marble, but at Watertown it is only suitable for ordinary purposes. 78 AX AMERICAN GEOLOGICAL RAILWAY GUIDE. (X.Y.) Delaware, Lackawanna and Western Ms. | Railroad. Delaware, Lackawanna and Western Railroad— Continued. 0 Binghamton. 11 b. Chemung. 8e8 60 I Poolville. 10 b. Hamilton. £ 7Chenango. HChenango Forks 21 Whitney's Point 00 T {alp 64 68 72 Hubbardsville. Nor. Brookfield. Sangerfield Cen. % " 0 3 o AVJJuloiV* 30 Marathon. 35 State Bridge. 44Cortland. A h TT^-™. ,^-*» 11 a. Portage. 11A1 (c 73 78 81 84 Waterville. Paris. Richfield June. Clayville. g 9 c. Corniferous. 6. Salina. ™ 5 b. Clinton. ^ 4 / 54 59 61 66 73 80 '80 92 98 104 115 U.UU1C1. Preble. Tully.75 Apulia. Onativia. Jamesville. 7 4 Syracuse.27 10 a. Genesee. 10 b. Hamilton. 1249 « 1221 10 c. Marcellus. 9 c. Corniferous. 585 6. Salina. 89B 86 87 89 91 95 si 85 86 88 90 92 99 102 Sauquoit. Chadwick's. Washing'n Mills New Hartford. Utica. I* 3 % " 0 i. 4 b. Utica. 405 |* Richfield Junc'n Bridgewater. Unadilla Forks. West Winfield. Cedarville. Miller's Mills. South Columbia. Richfield Spgs46 6. Salina. *, 10 b. Hamilton. |; 11 b. Chemung. o 12. Catskill, synclinal el 10 b. Hamilton. 1 1 n 9 o. TTnnpr TTpldprhpro- Syracuse.87 Baldwinsville. Lamson's. Fulton. 7 5 Oswego.71 6. Salina. 3y5 5 c. Niagara. 5 b. Clinton. 5 a. Medina. Lake, 245. Cayuga Division. 0 Utica.18 4 b. Utica. 0 Owego. 11 b. Chemung. 828 4 New Hartford. 5 b. Clinton. 4 Cattatonk. tt 9 Clinton.76 ** 10 Candor. tt 11 Franklin I. W. 5 c. Niagara. 14 33 Wilseyville. Ithaca on the hi 11 a. Portage. 91$ 11. « 945 14 18 Deansville. OriskanyFalls20 6. Salina. 8. Oriskany s.s. on 7. L. 33 Ithaca on the L ake. " 576 21 Solsville. 10 b. Hamilton. [H'g. £4 0 11 19 Binghamton. Ohenango Forks GiTGGGC. 11 b. Chemung. 868 u n 24 26 29 Bouckville. Peaksport. Hamilton. ii tt 25 Brisbin. it HH 31 Smith's Valley. it 29 Coventry. § 0 Clinton.76 5 b. Clinton. 33 Oxford. 10 a. Portage. 9*9^ 2'Kirkland. u 41 Norwich. 10 b. Hamilton. 100° 2. SjClark's Mills. II 47 North Norwich. " P 5 Westmoreland. «< 52 Sherburne. " 1042 7;Bartlett. u 57 Earlville.94 (( 1077 13;Rome. 4 c. Hudson River. 439 The Falls of Black River in Watertown arc 35 feet perpendicular over the limestones at the Suspen- sion Bridge, and 112 feet within the city limits in six separate falls. 68. There are two miles of rapids in Salmon River, which terminate in a fall of 107 feet. At high water the sheet of water is 250 feet wide, and at low water about half that extent. The fall is over the grey sandstone of the 5 a. Medina, and is seven miles northeast from Richland. 69. Adarns. The Gulf of Loraine, on South Sandy Creek, is a genuine canon upon a small stream flowing through the Loraine or Hudson River slates, Utica elate and Trenton limestone in the town of Loraine, from which some geologists prefer that name for the formation. The walls are perpendicular and vary in height from 100 to 300 feet, and the gulf varies in width up to 16 rods. There are several of these gulfs in Jefferson County, some of them 12 miles in length, reaching to the starting points of the streams. A convenient place to stop to study the Loraine shales, a huge mass of mud rock, is the pleasant village of Adams. There are two of these gulfs within two miles southeast in the town of Loraine, but not on the stream in the village, which is on Trenton limestone. On the way observe a remarkable moraine of naked Laurentian boulders, some of them very large. This ridge crosses the railroad just south of Adams, where are many boulders in the fields, and is said to extend from Lake Ontario south of Woodford northeast into Canada. The ridge road, which runs all along Lake Ontario, also occurs here a little nearer the lake than the ridge of boulders. 70. The shales and sandstones at Pulaski are the upper part of the 4 c. Hudson River, which were at first called Pulaski Shales, or the Shales of Salmon River, and Loraine Shales. It is the only rock at Pulaski village, and is full of fossils, while the lower or Frankfort division has very few. 71. Oswego. Lake Ontario, like all other New York lakes, is a lake of excavation. Along its northeast shore, in Canada, is the 4 a. Trenton limestone. On its south or New York shore we find the 5 a. Medina sandstone extending from Oswego, the whole length of the lake, to Hamilton in Canada. The lake is excavated 50 feet in the red and 100 feet in the gray 5 a. Medina formation, 230 feet in the Hudson River and 120 feet in the 4 b. Utica slate, the whole making a thickness of NEW YOKE. 79 Ms. | Geneva, Ithaca and Sayre Railroad. Ms. | Cayuga Southern. 7 7 0 Savre. *- ° 9 11 b. Chemung. 774 0; Cayuga. 78 6. Salina. Lake, 376. 2 West Waverly. u 6. Salina, with Gyp- 9;Bingham's. *» Cl 6 UnionSprings79 • sum beds. 9 c. Cor- 16YanEttenville. " M niferous quarries. 19,Spencer. 23jNorth Spencer. « |« 10 Levanna. 8 ° 10 a. Marcellus. 10 b. Hamilton. 27 West Danby. « °§ Sj 13 Aurora.81 tt 31 Newfield. " leWillett's. n 38 Ithaca.84 11 a. Portage. S76 20 King's Ferry. "Bluffs 100 ft. 44 1 Willow Creek. «< 22 Atwater's. u 46 Taghanic Falls. " Gulf. 2 5 Lake Ridge.82 " Tully limes. 48 Trumansburg. tt 27 Taughannock. tt ' n 51 64 Covert. Farmer. " Tully limestone. 10 b. Hamilton. 32 Ludlowville. 8 3 (10 c. Genesee and ( Portage. 57 Ovid Centre. " 3 8 Ithaca.84 11 b. Portage. §7(? 61 68 Hayt's Corners. Romulus. £ i n Northern Central Railroad. 70 West Fayette. " 0 Elmira.10 11 b. Chemung. 862 f 9. c. Corniferous. An 6 Horse Heads. " 897 77 Geneva 3 1 i ancient deep chan- 1 nel northward, filled [ with gravel drift.452 10 13 19 Pine Valley. Millport; Havana. 8 5 « 891 11 a. Portage. u 453 Ontario Southern Railroad. 22 Watkins.86 "Lake,441 447 29 Rock Stream. (i 0 Sodus Point. 5 a. Medina. Lake, 245. 31 Big Stream. 10c. Genesee, gulf. 4 Wallington. " 33 Starkey. " 804 6(Sodus Centre. 5 b. Clinton. 37 Himrod's. " 793 10 Zurich. u 41 Milo. " 851 ISFairville. 5 c. Niagara. 45 Penn Yan. 8 7 " & Portage.-50 16 Newark. 6. Salina. 49 Benton. tt tt 20 Marbleton. « 5lBellona. 10 b. Hamilton. 857 '22 Outlet. a 55 Hall's. tt 28 Phelps. 9 c. Corniferous. 58 Stanley. « 898 27 Orleans. u 61 Lewis. " 31 Flint. tt 63 Hopewell. « 844 34 Stanley. 10 b. Hamilton. 885 69 Canandaigua. 88i Lake,668a 734 500 feet or the real depth of the lake, the surface of the 4 a. Trenton limestone being its bottom. It is 180 miles long, 40 miles wide, 492 feet deep and its surface is 245 fe'et above tide water. 72. Midway between Watertown and Brownville the whole river falls 60 feet in less than half a mile, running in a gorge with high banks. 73. Tully. The Tully limestone, separating the Hamilton from the Genesee, which is named from this place, is not seen on the railroad, but is found further to the west. The swamp near Preble is supposed to be underlaid by the Tully limestone. 7'4. Between Syracuse and Jamesville are good natural sections of the 6. Waterlime and 9. Onondaga and Corniferous limestones, many quarries and natural cliffs. Beyond Jamesville observe the transition into the Hamilton group where the high hills begin, the Marcellus shales being deeply excavated. Visit Green Lake, near Jamesville. 75. The red sandstone of the 5 a. Medina formation is well displayed at Fulton, in Oswego County, where it causes the Oswego Falls and forms the banks and bed of the river above and for half a mile below. The upper layers are covered with Fucoides Harlani, some of them of gigantic size. 76. The 5 b. Clinton formation is named from this place. 77. This is one of the best railroads in the State for geological observations. There are many points on the Cayuga Railroad where the junction of the Hamilton with the Tully limestone and of the latter rock with the Genesee shale, and of the Genesee with the Portage group are perfectly seen in juxtaposition. The lake affords every evidence and facility for geological sections. 78. Cayuga Lake is 40 miles long, 3| miles wide, 390 ft. deep, and its surface is 376 ft. above tide. 79. The gypsum beds are finely displayed just north of Union Springs, and large quantities are produced for market. South of the town the 9. Upper Helderberg range crosses, and causes an islet m the lake. Its lower layers, the Onondaga limestone, make beautiful quarries. 80. The low clayey land extending nearly to Levanna is on the 10 a. Marcellus shale. The first rock south of this is the dividing line^ between the Marcellus and Hamilton. 81. The 10 b. Hamilton presents its first bluff south of Aurora, 20 to 50 feet high, containing numerous fossils. Further south are many others, some of them 100 feet high, extending for miles. Nothing could be finer than these geological sections of the Hamilton. 82. The Tully limestone first appears at Lake Ridge, from which the station is named. It is the dividing line between the 10 b. Hamilton and the 10 c. Genesee. It dip? as you go south and rises again. This looks like a flexure of the formations, but it is caused by the change in the course of 80 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) Ms. | Syracuse, Geneva & Corning Railroad. Ms. Syracuse, Chenango and IV. Y. R.R. C s 14 21 26 30 33 36 37 45 49 52 58 1 Geneva.31 Earle. 8 9 Dresden.87 Himrod's. Dundee. Rock Stream. Reading Centre. Watkins Glen. Glen Bridge. 8 6 Beaver Dam. Post Creek. Ferrenburg. Corning. 9 c. Corniferous. 453 10 a. Marcellus. j 622« Tully lime- ] stone, 1 mile south. 10. Hamilton. 854 " 968 11 a. Portage. Q " ^1048 " pi 015 ( i os i "View of Glen, I Bridge 150 feet high. 11 a. Portage. 1267 11 b. Chemung. 1175 (4 " 943 c 8 1C 12 15 20 23 29 32 38 45 Syracuse. 2 7 Manlius Cen. 9] Fayetteville. Manlius. Oran.92 Tunnel. Cazenovia.93 Webster's, ^rieville. Georgetown. jebanon. 9 4 Earlville. 6. Salina. sss 7. L. Held., Waterlime. " & 9. Onon. l.s.560 j 9. Onondaga limest. I Heavy beds. 7 2 ° 9. Onondaga 1. s. 897 ( 10 a. Marcellus. 1218 •j 10 b. Tunnel in Ham- ( ilton sandstone. 10. Hamilton. n»o (i " 15 9 S " 1 G 3 7 j 10 c. Genesee. 1364 } 11 a. Portage, cliffs. 10 c. Genesee. 1077 Corning, Cowanesque & Antrim Railroad. Cazenovia, Canastota «fe De Ruyter R.R.26 0 15 22 39 51 Corning. Lawrenceville,P Tioga Village. Wellsboro. Antrim. lib. Chemung. 94S enn. " " 1008 " 1330 ( 14 b.Semi-bituminous ( Coal Measures.1673 O^anastota. 3Clockville. 4Colton. 5 Oak Hill. 6,Quarries. 9 5 S'Perryville.98 9 Hyatt's. HChitt'go Falls97 12'Bingley. 13 Shelter Valley. 14Firndell. 15 Cazenovia.93 1 7 Syr. & Chen. Jun 22 New Woodstock 25 Shedd's Corners. SOiDe Ruyter. 6. Salina. " 637 it u Gypsum in cuts. 9. Onondaga limestone. " 1041 it 10 c. Marcellus. ' 1041 < 10 a. Hamilton. * 1177 ' 1248 ' 1293 « 1386 10 c. Genesee. 1276 15 23 27 Lawrenceville. Nelson. Elkland. 11 b. Chemung. 1008 n " 1143 48 Fall Brook. " 1794 Tioga, Elmira and State Line Railroad. OElmira.108 1 Erie Junction. 3 State Line June. 7 Wells. 9 Seeley Creek. 10 State Line. 12 Millerton, Penn. 15 Trowbridge. 17 Summit. 23,Tioga Junction. 24 Mitchell's. 2 5 Old Station. 26 Tioga. 27 Berry's Bridge. 35 Mansfield. 40Covington. 1208 45Blossburg. 1848 49 Arnot. 11 b. Chemung. 862 tt i< « " 1041 Cl " 124C. 12. Catskill. 1^0 " 1694 11 b. Chemung. 102i (C II " 1043 Cl ii4o« Iron ore. L2.Cats'll, Fish beds.90 L4 b. Coal Measures. i«83« coai mines> Southern Central Railroad. OS 7J 10 J 14' 20 ( 241] 291 35] 39] 431 45] 51] sayre.109 3arton. smithboro. Moga. )wego. ^lemingville. STewark Valley. Berkshire, ^ichford. larford Mills, larford. )ryden. lib. Chemung. 774 n <( « " 811 11 « 95M *« 1038 <« 1090 M <« 1179 1073 "Summit, 1215. 45 Morris Run. " <(1655|| the lake. After rising again it forms a beautiful coping of the Hamilton group for miles above Taughannock. See the description of the 10 b. Tully limestone. 83. This is one of the best localities of the Hamilton group which we know. South of Ludlow- ville the 10 c. Genesee shale appears above the Tully limestone. It is uniformly black, of a slaty structure, fine grained, a hard and brittle mud rock, its edges resisting the weather, but its surface when exposed falling into pieces. You get a good section of the base of the Portage here. There is a well marked dividing line here between the Genesee and Portage, being a sandstone 2 or 3 feet thick, very compact and solid, with its under surface filled with f ucoids raised in relief, one or two inches long, with their ends depressed. The eye readily follows it as it dips toward the water. 84. Every part of the Portage group can be inspected in the ravines and water falls in the vicinity of Ithaca. 85. There is a glen here, one mile southeast from the station, quite equal to that at Watkins. It is also in the Portage. See Note 86. 86. Watkins Glen is in the 11 a. Portage. It is a great wonder and very beautiful. There is a grand view of the chasm in crossing the bridce over it at Glen Bridge on the Syracuse, Geneva & Corning Railroad. The gulfs on that road are perfectly characteristic of the Portage group. NEW YORK. 81 Ms. | Southern Central Railroad— Continued. Utica, Ithaca & Elmira Railroad— Continued. 54 Freeville. 11 a. Portage. 104;i Ms. | Scipio Branch. 56 Peruville. u 0 Freeville. |11 a. Portage. 59 Groton. « 990 4 West Dryden. u 65 Locke. 79 2" onlOc. Gen. 7 Asbury Road. (1 69 Moravia. 9 8 « • 725 O 10 South Lansing. u 73 Cascade. 9 9 10 b. Hamilton. 717| 14 North Lansing. " 76 Scipio. " (Glen.) | 17 Genoa. " 79 Wyckoff's." « 719 23 Venice Centre. " (Foot of Lake.) 57- 27 Scipio. u 86 90 Auburn.80 Throop. 9 c. Cornifer. tJ44p^ 6. Salina, 13 miles. New York <& Oswego Midland Railroad. 95 Weedsport.33 « ' 417 New York, (Erie Railroad), N. W. 99 Brick Church. a 0 Middletown. 4 c. Hudson River. 5 5 ° 104 Cato. *< 416 5 Fair Oaks. u 108 112 Ira. Martville. 5 c. Niagara. 5 c. Clinton. 10 Bloomingburg. ioi ( 5 a. Oneida. 7 * 7 \ Tunnel, 3,840 feet. 115 Sterling. " 12 Wurtsboro. 545 116 Fair Haven. 118IN. Fair Haven71 5 a. Medina, 3 miles. " Lake, 245. 15 Summitville. j 10. Hamilton, 11 a. ( Portage & Chemung. .-ift 5, Utica, Ithaca and Elmira Railroad. 30 39 40 46 Fallsburg. Liberty Falls. Liberty. Parkesville. 12. Catskill. Tunnel, " 1,017ft. u " 1798 Elmira. Horse Heads. 11 b. Chemung. 863 817 10 Ureesport. -\ 51 Morseton. 11. Chemung. 14 7"» 1 . ] 63 Cook's Falls. i 21 Swartwood. g 73 82 East Branch. Hancock. 12. Cats 11. Tun'l, 1,100 25 Van Etten. w 89 Jodosia Summit ' 1463 ft 2 8 Spencer. o 93 Rock Rift. < 1152 32 West Candor. 34 North Candor. 37jWilseyville. 42|White Church. 44 Mott's Corners. 46 Besemer's. **i 913 §• ? 11 a. Portage. J 101 108 117 125 127 134 Walton. Zig Zag. Sidney Centre. Sidney Plains, ^ew Berlin Jun jruilford. Junct'n of the II.1220 12. Catskill, synclinal. 11 b. Chemung. 9«7 " 1399 50 Ithaca.84 M 143 Oxford. 53 Varna. 54 Snyder's. ' 148 163 Norwich, ilarlville. 11 a. Portage, 763 10 c. Genesee. 57 Etna. *v 167 Smith's Valley. 10 b. Hamilton. 60|Freeville. 62 Malloryville. 1 172 174 Saton. kforrisville. 10 a. Marcellus. 9 c. Corniferous 1. s. in Orf 67 70 71 3outh Cortland. Cortland. D.L.&W. Depot 100 i ' 1111 181 183 187 190 tfunnsville. book's Corners. Oneida Comm'ty )neida. hills. 6. Salina. 5 c. Niagara. 5 b. Clinton. 412 0 Cortland. 11 a. Portage. 192 3urhamville. 12Truxton. u 200 STorth Bay.108 " °S. f 16jCuyler. " 209 Cleveland. " Lake 367 » & 20|De Ruyter. 10 c. Genesee. 1276 216 3onstantia. l ° 2 " »1L 0 De Ruyter. 10 c. Genesee. 1276 223 Central Square. " §2. 10 Otselic. 11 a. Portage. 230 Pennellville. ' t P" J* 20 Plymouth. 28[Norwich. 11 b. Chemung. 238 250 Fulton.75 Oswego.71 5 a. Medina. S35 Lake, 245. 87. The outlet of Crooked Lake from Perm Yan to Dresden is through the Genesee slate, Tully limestone, and the upper part of the Hamilton— all finely displayed. Crooked Lake is 20 miles long, one mile wide. 100 feet deep, and its surface is 718 feet above tide water. Its northern half is divided by a bluff of Portage (800 feet high) into two branches— one of them 12 and the other 8 miles long. 88. Canandaigua Lake is 14 miles long, from one to two miles wide, its surface is 668 feet above tide, and its greatest depth is 100 feet, but it is very shallow at both ends. It is excavated from the Hamilton and Portage groups. 89. The drift described in note 31 extends nearly to Dresden. 90. The fish beds are midway between Blossburg and Covington, in a cut called "Red Rock," where the formation is exposed for about 200 feet in thickness. 82 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) New York & Oswego Midland Railroad- Ms. I Continued. Ms. | New York, Lake Erie & Western — Con. 101 105 109 112 118 Walton. Colchester. Hawley's. De Lancey's. Delhi. (As before.) 12. Catskill. « « it 47 49 50 51 53 iurner s. Monroe. Schunemunk Mt Oxford. Greycourt. 4 a. Trenton limestone. 4 c. Hudson River. 2 b. Potsdam. 4 a. Trenton. 4 c. Hudson River, 25m 59 Goshen. <> 430 127 New Berlin Jun 11 b. Chemung. 66 Middletown « E59 134 Mount Upton. ti tjf TTnwpll's u 689 140 Holmesville. « t \ 75 JHOWcH !3. Otisville. 1 ° 6 « 836 145 149 New Berlin Cen. New Berlin. 10. Hamilton. u Kittatiny, Blue, or Shawangunk 5 a. Oneida, or Shawan- gunk and Medina. 0 15 17 Middletown. Summitville. Phillipsport. 4 c. Hudson River. n u 87 Mountain. Port Jervis.101 f 7. Lower Helderberg. I 8. Oriskany. 441 ] 9. Cauda Galli & Up. 19 Eomowack. 14 • [Heldg. & 10. Ham'n. 23 Ellenville. "and Trenton. Sparrowbush. 11 a. Portage. New York, Lake Erie & Western Railroad. 99 Pond Eddy. 11 b. Chemung. 571 (Late Erie Railway). 106 Shohola. a New York. * 1 c. Montalban. 110 Lackawaxen107 " 648 0 Jersey City.108 ( 16. Triassic. Tunnel 116 Pine Grove. ti 104 K in Basalt, through 122 Narrowsb'rg1 ° 7 « 714 (Tide Marshes.) ( Bergen Hill. 131 Cochecton. 12. Catskill ridge. 9 RutherfordPark 16. Triassic, 31 miles. 11 b. Chemung. 11 Passaic. " ( Passaic Falls 135 Callicoon. « 781 16 Paterson. " 1 over Basalt. 136 12. Catskill, (bluffs). 21 Ridgewood. « 137 143 Bawkins. (i 23 Hohokus. M 147 Basket. (i 25 Allendale. (C 154 Lordville. |< 27 Ramsey's. (« 159 Stockport. 11 b. Chemung. 31 Suffern,N.J.105 1 a. Laurentian. 298 163 Hancock. 12. Catskill. »26 33 Ramapo, N.Y. « 172 Bale's Eddy. lib. Chemung. 34 Sterling Junc'n « 176 Deposit. « 1008 35 Sloatsburg. « 184 Summit. 1373 "Mt.toN. Cats. 41 Southfield. « 192 Susquehan'a 10S « 911 43 Greenwood.105 " 520 200 Great Bend. U 884 91. Just south of the Erie Canal there is a deep cut in a bluff of Waterlime group. 92. Picturesque view of Pompey Valley. 93. Cazehovia Lake is a beautiful lake, 4}& miles long, % mile wide, and 70 feet deep, 1,189 feet above tide water, and is excavated in the Hamilton group. It discharges its waters into Chittenango Creek, which runs southward. • 94. Lebanon and Earlville are both good localities for Hamilton fossils. 95. Extensive and beautiful view extending over Oneida Lake. 96. Canaseraga Falls similar to Chittenango Falls. Note 97. 97. The Falls are in sight in the valley to the west. Here Chittenango Creek falls 120 feet per- pendicularly into a canon over the 9. Onondaga limestone, with the Corniferous bed over it, which forms the sides of the creek at the top of or above the Falls. Under the Onondaga limestone is the Oriskany sandstone, only six inches thick. Above the Falls the creek flows through a small, handsome valley, its lower sides formed of Marcellus, and the tops of the hill? Hamilton. 98. Moravia is an excellent locality for Hamilton fossils. The Tully limestone, the dividing line between the Hamilton and Genesee, is halfway up the hill sides, and appears to dip below the valley north of Locke. It is met with at the falls of Dry Creek, south of Moravia. 99. Owasco Lake is 10 miles long, a mile and a half wide at the north at Auburn, and a half mile at the south end, and 750 feet above tide water. The whole of the lake is in the Hamilton group. 100. Marl is here taken from the bottom of ponds; dried like bricks, and burnt into lime. 101. From Bloomingburg tunuel to Sidney, the geology is the same as from Port Jervis to Sus- quehanna on the Erie Railway. 102. Oneida Lake is 19 miles long, 6 miles wide, its greatest depth not over 40 feet, and in general it is quite shoal. Its surface is 367 feet above tide water. It is excavated in the 5 b. Clinton group the rocks of which appear on its south shore and west end. Its north shore is covered with sandy alluvium which is 100 feet deep at the east end and furnishes glass sand used in the glass factories in this vicinity. 103. The Erie rail way tunnel at Jersey City is through Bergen Hill, which is the southern end of the mountain ridge of basalt or trap rock of the 16. Triassic age, 48 miles long, known farther north as the Palisade Mountain. See note 5. 104. The railroads out of New York through New Jersey pass over very extensive tide marshes, covered with reeds and coarse sedge grass, growing in soft mud, which is in some places forty feet deep, and all overflowed in high tide. These vast salt marshes so near New York City, which excite the wonder of strangers, contain from 250,000 to 300,000 acres or from 400 to 470 square miles. NEW YORK. 83 Ms. | New York, Lake Erie & Western— Con. Ms. | New York, Lake Erie & Western— Can. 20t > Kirkwood. 11 b. Chemung. 331 Hornellsville. Ill b. Chemung. usi 214 t Binghamton 1 ° * " 868 34C • Alfred. "Summit, 1793. > Union. tl 34£ Andover. " 22< Campville. It B5hi Genesee. " 3511 236 Owego. tt 822 365 Phillipsville. tt 246'Smithboro. || 368 Belvidere. tt 1384 24S Barton. II 373 Friendship. tt 1539 255 Waverly.109 It 836 382 Cuba. 1548 'Summit, 1698. 26C Chemung. It 389 Hindsdale. 1 266 273 290 Wellsburg. Elmira.i08 Corning. tt tt 862 tt 943 39401ean. 398Allegany. 407 Carrollton. t 1488 I ' 1399 301 Addison. II 410 Great Valley. 1 331 343 Hornellsville. Canaseraga. " 1161 II 4 13 Salamanca. 421 Little Valley. t 1884 355 Nunda. 1 1 a. Portage. 428 Cattaraugus. I 361 Portage. x x ° tt 1314 437Dayton. t 1346 365 Castile. tt 440iPerrysburg. 1 374 Warsaw. tt 1326 447 Smith's Mills. t 380 Dale. (1 451 Forestville. <• 883 391 Attica. " 998 454 Sheridan. 11 a. Portage. 395 Griswold's. Tirt Vt1S%-»t 10 b. Hamilton. 1044 ti 459 Dunkirk. tt 607 403Alden.' 868 " & 9 c. Corn. 76 Avon.111 9 c. Cor. & 6. Water Li. 408 Town Line. 9 c. Corniferous. 68S 83 Caledonia. " 0* 412 Lancaster. < i 90 Le Roy. 8 ""I & 420 East Buffalo. tt 611 94 Stafford. 5V s « 422 Buffalo.40 688 tl T-tp, Kfin 100 Batavia.41 889 «* • ff1^ 2 O 00 i 107 110 Alexander. Attica. 10 b. Hamilton. 11 a. Portage, 0 1 Corning. Painted Post. 11 b. Chemung. 943 5 Coopers'. 76 Avon.111 9 c. Corniferous. 7 Curtis'. 80 South Avon. " and Marceftus. 9 Campbell's. 85 Geneseo. 10 b. Hamilton. 14 Savona. 89 Cuylerville. 20 Bath. 90 Shaker's. 11 a. Chasaqua shale. 23 Kanona. 91 Mt. Morris.1!2 10 c. Genesee. 27 Avoca. 94 Sonyea. it 30 Wallace's. 98 McNair. ii 35 Liberty. r»i 1% 102 West Sparta. 11 a. Portage. 39 A K Blood s. 106 Dansville.113 ii •40 vv ayland. 50 53 Springwater. Webster. 11 a. Portage. Newburg Branch. 57 Conesus. u OiNewYork. i c. Hudson River. 60 South Livonia. 11 b. Hamilton. 43,Greenwood. " 64 Livonia. " 45 Junction. " 67 Hamilton. " 48 Highland Mills. a 76 Avon.111 9 c. Cornif. and Water- 50 Woodbury. " 80 Rush. 6. Salina. lime. 56 Dornwall. a 82 Scottsville. ii 58 Vail's Gate Jun. tt 86 Henrietta. tt 60 ^"ew Windsor. tt 90 Red Creek. « 63 N"ewburg. n 94 Rochester. 3 3 5 c. Niagara, 3 miles. 5 2 7 Future generations may build dikes and reclaim them, but at present they are dismal swamps without a single tree or shrub, and wholly impassable to either man or beast. The two hills which rise abruptly m the salt meadow south of the Erie Railway and north of the Pennsylvania Railroad, are called Big Snake Hill and Little Snake Hill. The large one is half a mile long and 200 feet high. Both of these hills are outbursts of trap from between the underlying sandstone strata, similar to the Palisade Mountain. 105. Suff ern to Greenwood. Here is a long natural gap through the Laurentian Highland range or Ramapo Mountains. Going west you go through a 2-4. Cambrian valley to Otisville. There is some Trenton limestone at Greenwood furnace and Turner's, but nearly all the surface for 30 miles is covered with Hudson River slates, the softer portions about Goshen forming a beautiful country. 84 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) :,Is. | Middletown and Crawford Railroad. Branches of IV. Y. L. E. «fc \\.-Coniinued. Ms. | Walkill Valley Railroad. 0 Middletown. 3 Crawford June. 5 Circlesville. 8 Bellville. 10 Thompson Rdge 13 Pine Bush. 4 c. Hudson River. c < c t 0 59 61 64 66 68 69 73 76 79 82 85 87 91 94 96 98 102 Jersey City. Goshen.105 Ripp's. Campbell Hall. Neely Town. Beaver Dam. Montgomery. Walden. Shawangunk. New Hurley. Gardner. Forest Glen. New Platz. Springtown. Rosendale.114 Katson's Cave. Whiteport. Kingston.114 (See Main Line Erie R.) 4 c. Hudson River. K u u 5 a. Oneida or Shaw'k Grit and Medina. 7. Lower Helderberg • and 9. Upper Held'g, mainly Upper. it a 4 c. Hudson River. u " & Water Li. Bath and Hammondsport Railroad. 0 Bath. 3 County House. 5 Cold Spring. 7 Pleasant Valley 9 Hammondsport. 11 b. Chemung. u It It Branches of N. Y. L. E «t VV. Piermont Branch. 0 Suffern. 9 Nanuet. 17 Piermont. 16. Triassic. Northern Railroad of New Jersey. 0 Jersey City. 6 New Durham. 7,'Granton. 9Ridgefield. 12Leonia. 14Englewood. 15 Highland. 16Tenafly. 17,Cresskffl. 19Closter. 21 Norwood. 23 Tappan. 24 Sparkill. 25 Piermont. 29 Nyack. 16. Triassic. Trap dike to Gran- ton. tt 11 j/2 K « !2{®' " Or § " ' 1 tt Monticello and Port Jervis Railroad. OPort Jervis.10 6 Huguenot. 8 Rose Point. 12jParadise. 13 Oakland. 16 Hartwood. 1 8 Gillman's. 20 Barnum's. 24 Monticello. 10. Hamilton, lib. Chemung. 12. Catskill. 106. Otisville. One mile west of Otisville in the Erie Railway cut the 4 c. Hudson River shales are seen running under the 5 a. Oneida conglomerate. This is the dividing line between two of the great geological groups or periods, the Lower Silurian and Upper Silurian. In a moment the whole character of the country is changed from cultivated grazing land on the Hudson River slates, the Orange County milk country to the east of this line, to a poor, barren, rocky region on the Oneida or Shawangunk and Medina formations, showing in a striking manner how the character of the country depends On its geology. In descending the Shawangunk Mountain towards Port Jervis there is an alternation of beds of the Oneida conglomerate, which is of a light gray color, and the Medina sandstone, which is of a high red color. Some pockets of galena were discovered and mined here, but were soon exhausted. At Port Jervis we are in the Hamilton, a formation producing a country capable of supporting a population. The intermediate formations are very thin and compressed together. 107. Lackawaxen. From Port Jervis to Narrowsburg, the Delaware River and Erie Railway pass through a deep and crooked gorge about 25 miles long, exhibiting some of the wildest scenery in the country. The railroad is cut out of rock in many places and overhung as it were by ragged precipices. 108. Binghampton. West of Susquehanna'the Erie Railway and its branches run for more than 300 miles on the 11 b. Chemung formation. Most of it is a fine fertile country with some handsome towns, the largest of which are Elmira and Binghampton, in valleys filled with gravel alluvium, and the higher country formed of the calcareous Chemung shales, is quite productive, much of it being a good grazing country; but there is no variety in its geology. East of Susquehanna the Chemung formation is composed of harder sandstone. It contains less calcareous shale, and the soil is poor. The country improves rapidly going westward from Susquehanna. 109. Just west of Waverly are the Chemung Narrows, where 100 feet of rock are exposed. The quarries have produced an abundance of characteristic fossils of the Chemung group in their greatest beauty and perfection, the formation having been named from this locality. Five miles south of Waverly the opening of the Susquehanna Valley may be seen, where the Chemung River from the west and the Susquehanna from the east, unite and traverse the State of Pennsylvania to Chesapeake Bay. At the west end of Waverly Village is a curious flat-topped hill, about 60 feet high, called " Spanish Hill." It is an eddy hill of gravel formed in the drift period; but it can be seen to better advantage on the south side, at Sayre on the Pa. & N.Y. R. R. and the G. I. & S. R. R. There is a similar eddy hill iu tlie village of Union. NEW YORK. 85 Branches of IV. Y. L. E. & W.— Continued. Ms. | Buffalo and Southwestern Railroad. Ms. i Buffalo. Bradford & Pittsbure Railroad. 0 Carrollton. 11 b. Chemung. ^ C ? tfuttalo.40 Junction. 9 c. (Jormterous. 5 '• » <( 11 14 19 90 Bradford's, Pa. DeGolias, " Big Shanty, " Crawford's " :: II p ^ 2 e 1C 13 16 LimestoneRidge Abbott Road. Hamburg. Eden Valley. " tt 10. Hamilton. 11 a. Portage. 26 Gilesville, " 14. Coal Measures. 19 23 Eden Center. North Collins « ft Warwick Branch, S. W. 27 Lawton's. 11 b. Chemung. 54 Grey court. 4 c. Hudson River. 30 Collins. t 55 East Chester. « 33 Gowanda. i 5 7 Sugar Loaf. it 39 Dayton. i 58 Lake. 4 a. Trenton. 1 43 Pine Valley. i 63 Warwick. « 48 Cherry Creek. t Sus 420 420 425 pension Bridge and Niagara Falls Branch. 53 56 60 69 Clear Creek. Randolph. Kennedy. Jamestown. 115 < < i Buffalo. East Buffalo. Main Street. 9 c. Corniferous. « 431 40/7 Tonawanda. T f\ ^dllo 6. Salina. (i Buffalo, Allegany Valley «fc PittsburgR. R. 442 113 Niagara Falls.39 Susp Bridge 42 5 c. Niagara. From Dunkirk to Pennsylvania State line on 11 a. Portage and 11 b. Chemung. 444 Clifton, Ont. « Buffalo, Corry and Pittsburg Railroad. Honesdale Branch. (See Pennsylvania.) From Brockton, 11 b. Chemung. Jefferson Branch. Atlantic and Great Western Railroad. (See Pennsylvania). Ulster and Delaware Railroad. Part in New York, 11 b. Chemung.115 OlRondout.114 j 4 c. Hudson River. ( 6. Water Lime. H? Rochester and State Line Railroad. 4 Kingston. 7. Lower Helderberg. z' 0 Rochester. 5 c. Niagara. 48$ 9 West Hurley. 10. Hamilton. & 5 Maplewood. u 12 Olive Branch. lib. Chemuag. ' 7 Brookdale. 6. Salina. 15 Brooks' Cross'g 1 1 a. Portage. 11 Scottsville. " 555 17'Broadhead Bra. 2 14 Garbuttsville. 6. Waterlime. ISShokan. 11. Chem. & 12. Cats. % 15 Wheatland. H 21|Boiceville. 12. CatskilL 5* 17 Mumford. " 611 24| Mount Pleasant. u g- 21 Lime Rock. 9 c. U. Helderberg.770 27i Phoenicia. £ 25 Le Roy. « 864 32'Fox Hollow. U 30 Pavilion Center. 10. Hamilton. 33 Shandaken. 1* 33 Pavilion. " 933 36jBig Indian. 39 Pine Hill. M j " Lowest pass® ( of the Catskill Mts. ~ 38 43 48 Wyoming. Warsaw. Rock Glen. 10 c. Genesee. 957 11 a. Portage. iil0 44 Griffin's Corners 12. Catskill. 54iGainesville. 1673 48 Dean's Corners. 11. Chemung. £ 62 Bliss Corners. 51 Kelly's Corners. 1 65 Eagle Village. Summit, 1909. 53 Halcottville. " £! 83 Machias. 1639 & lib. Chem. 57,Stratton's Falls. 12. Catskill. 93 Ashford. < t 59 Roxbury. " S 97 Ellicottsville. « 1541 65 Moresville. "and Chemung. * 102 Great Valley. U 74jStamford. i< 108 Salamanca. " 1300 110. Portage. Here the railroad crosses the very deep gorge of the Genesee River on a high iron Dridge 820 feet long and 235 feet high. There are three falls within a distance of two miles which are 60, 90 and 110 feet high, hesides the intervening rapids. Two of them are visible from the car windows on the north side. The bridge crosses the upper falls. The river pursues a meandering course through this deep gorge and over these three successive cascades, descending more than 500 feet, and passes out into the Valley of the Genesee at Mount Morris. The gorge is 20 miles long by the river, or 14 by the public road, and its depth in some places is not less than 350 feet, its width only about 600 feet, and the banks nearly perpendicular. The place is well worth a visit. It is cut out of the 11 a. Portage group, except the lower end, which is in the 10- c. Genesee shale. The Portage group was named from this place. See note 112, Mount Morris. There is an ancient channel 'AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) », New York and Philadelphia Ms. Harlem Extension Railroad. Railroad. 0 Chatham 4 cor. 3 b. Quebec. 40 9 c. Corniferous. 578 5!Chatham. Id .Uima. 10. Hamilton. 11 Rider's Mill. r< Aurora. " & 11 a. Portg. 18 New Lebanon. 22 26 29 Wales. Holland. Protection. « (t a 27 Lebanon Spr'gs. 31 N. Stephentown 34 Centre Berlin. 36 Arcade. lla.Por. &llb. Chem. 39 Berlin. 39 43 50 Yorkshire. Machias. Franklinville. it u lib. Chemung. 44 Petersburg. 45 N. Petersburg. 47 T.&B. Junction. 57 63 Ischua. Hindsdale. « u 53 Bennington, Vt. 69 Olean. a Poughkeepsie, Hartford & Boston Railroad. 76;Portville. 84 Eldred, Pa. ti 12. Catskill. 0 8 Poughkeepsie. Russell's. 3 b. Quebec.116 u 89 Larabees. " 18 Standfordville. a 97 Port Allegeny. " 26 Pine Plains. tt 107 Keating Summit " 30 Ancram Lead M ines. " 121|Emporium. j 14 a. Carboniferous, | summit of hills. 34 37 Tanner's. Boston Corners. (C (( Lake Shore and Michigan Southern R.R. 43 C.W. R.R. Jun. •V/r'-M j. t! if 0 Buffalo.40 9 c. Corniferous. 678 Miiierton. 10 Hamburg. 10. Hamilton. Troy and Boston Railroad. 21 26 Angola. Farnham. it « 0 Troy. j 4 c. Hudson River & (3 b. Quebec.116 29 Irving. « '4 Lansingburgh. u 31 Silver Creek. 10 c. Genesee. 9 Melrose. 3 b. Quebec. 40 Dunkirk. 11 a. Port. & Chemung. 13 Schaghticoke. u 49 Brocton Junc'n. 44 « Q 14 Valley Falls. It 57 Westfield. « « flfhj 17 Johnsonville. " 65 Ripley, Pa. 73 North-East. " "11 all" 21 24 Buskirks. Eagle Bridge. ti 11 80 Harbor Creek. s-2 26 Hoosac Junc'n. it 84 Wesleyville. " ° |- State Line. 3 b. Quebec. 88 Erie. « of 3 27 Hoosac Falls. «; 98Fairview. " Wjl 30 Hoosac. 3 b. &c. Stockbr'ge l.s. 103Girard, Pa. B'» 32 Petersburgh. 2. Cambrian. 115Conneaut, Ohio. 11. Erie Shale. 36 North Pownal. H 123 Kings ville. SST 43 Williamstown. (( 128 A.shtabula. " Bt 45 Blackinton. (C (Continued in Ohio). 48 North Adams. 1 f. Green Mt. gneiss. from Portage to Nnnda, filled up by drift, compelling the river to cut its present deep, tortuous channel. For other examples of this see notes 31, 35, 38 and 39. 111. Avon. You have 6. Waterlime, 9. Upper Helderberg, and 10 a. Marcellns shale in the creek. 112. To study the Genesee shales stop at Mount Morris. Go through the village one mile north- west to the mouth of the gorge, where the Genesee River, after running 20 miles through the deep canon from Portage, breaks out into the beautiful, broad and fertile Genesee Valley. There is a good section close to the bridge over the river. Get a boat and row one mile up the pool of the State dam, which flows to the foot of the precipices all that distance. This is the finest exposure of the 10 c. Genesee in the State, the typical locality from which it was named, and the scenery is in itself remarkably good. The cliffs are 100 to 200 feet perpendicular, full of septaria, like flattened cannon balls sticking in the walls. It is carious that so soft a shale rock should stand the weather so well and not form sloping banks when the edges only are exposed. See note No. 110, Portage. . 113. Dansville is in a beautiful amphitheatre of Portage hills with very picturesque views from the Water Cure and other elevated points. 114. The Rosendale Cement, manufactured near Rondout, is from the 6. Waterlime rock, which is here between the Medina sandstone and the Lower Helderberg limestone, the intermediate formations being wanting. It is a light blue, fine grained limestone, with smooth conchoidal fracture. The same formation furnishes the Hydraulic Cement, made at Syracuse, N.Y., and elsewhere. 115. Jamestown. Chatauqua Lake is 18 miles long, 2 miles wide, 1291 feet above tide water and 726 above Lake Erie. Its northern extremity is only 8 miles from Lake Erie, and yet it empties its waters by the Conewango, Alleghany, Ohio and Mississippi into the Atlantic. It is a beautiful sheet of water, bounded on its eastern side by gravelly sloping banks, and on the west by more levej and in some places marshy shores. It is excavated in the Chemung group, the Portage being along its outlet and on the shores of Lake Erie below, but of much less thickness than further east. NEW YORK. 8? Ms. | New York & Harlem R.B. 1 1 6, 1 1 7, 1 1 Ms. | New York and New Haven Railroad. ( < n 14 1( r 2C ^ 31 8J 37 4C 45 47 48 53 66 61 64 71 76 82 84 87 93 97 100 106 109 116 120 126 127 Al none New i ork. Fordham. Williams Bridge W. Mt. Vernon Bronxville. Tuckahoe. Scarsdale. White Plains. Pleasant ville. Chappaqua. Mount Kisco. Bedford. Grolden's Bridge Purdy's. Proton Falls. Brewster's. Dykeman's. Patterson. Pawling. South Dover. Dover Plains. Wassaic. Amenia.119 Sharon. Millerton. Mount Riga. Boston Corners. Copake. Hillsdale. Martinsdale. Philmont. Ghent. Chatham. ' the iron ore is pr on east side of ra 1 d. Montalban. « 4 | 1 ' Marble Marble 1 a. Laurentian. *• ' Feldspar pro- ,3 " duced for pot- fo " teries. " Iron ore W " on summit ii 3 b. Quebec. " Iron ore W. " Limest'e on E. « " Iron ore W. " Burden's gun "bar'l iro. ore W. " (Summit). " Iron ore W. " Iron Works. (i 1C 11 u it aduced on the west side— ilroad. ( 1$ 11 If 2$ 21 27 3C 31 35 ) New York. ijWilliamsBridge 5 Mount Vernon. !(New Rochelle. t Mamaroneck. Rye. Port Chester. Greenwich. Cos Cob Bridge. iStamford, Conn. 1 d. Montalban. u J20. Quaternary, un- derlaid by 1 c. Mon- talban, probably. i 0 5 6 8 10 13 16 Greenwich and Johnsonville Railroad. Washington Co. Troy. Johnsonville. Lee's. S. Cambridge. W. Cambridge. Summit. Easton. Greenwich. 3 b. Quebec.iie & 11? u <• [1 «( ~6 10 19 25 Long Island Railroad. Hunter's Point. Jamaica. Mineola. Hicksville. 20. Quaternary. a n « 29 34 40 59 Syosset. Huntington. Northport. Port J efferson. n u « (( 30 65 94 Farmingdale. Manor. Greenport. u (1 II Ne 0 2 4 6 12 13 wburg, Dutchess & Connecticut R. R. New York, Dutchess June. Matteawan. Glenham. Fishkill. Hopewell. Clove Branch Ju 3 b. Quebec group. "See note 116 ii t i Flushing, North Shore & Central Railroad. 0 3 4 5 s 11 14 Hunter's Point. Woodside. Wmfield. Newtown. Flushing. College Point. Whitestone. Brookdale. 20. Quaternary, i i t i t n 17 Sylvan Lake. ' 19 25 30 37 Billings. Verbank. Millbrook. Bangall. i c i Staten Island Railroad. 40 45 ~47j 50 54 59 Stissing Junc'n. Pine Plains. i t Stapleton. Richmond. Pleasant Plains, rottenville. CIS c. Cretaceous. •< (Plastic clay forma- / tion;. n u u Bethel. Shekomeko. WinchelPs. Millerton. »< " [Quebec. " Hill sW. are1 116. Quebec Group. The geology of the country between the Hudson River and the Con- necticut and Massachusetts state line is yet involved in considerable doubt, and while the name Quebec group is here given, it should be understood that the precise geological horizon of the places is much less certain than in the portion of the State west of the river, where all the formations can be identified by characteristic fossils, as well as by their superposition and well marked lithological appearances. When the State geological survey was made, forty years ago, these extensive de- posits of slate rocks were called Hudson River slates. Afterwards, in accordance with the Canada survey, they were called the Quebec group, by which they are yet designated as a general title, for AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.Y.) Ms. 0 8 10 16 | South Side Railroad of Long Island. Ms. Boston and Albany Railroad. Brooklyn. Richmond Hill. Jamaica. Valley Stream. 20. Quaternary. a <( u 0 1 9 17 20 24 29 34 39 Albany. Greenbush. Schodack. Kinderhook. Chatham Centre Chatham. East Chatham. Canaan. State Line. (Continued 4 c. Hudson River. « « " 11*4117 3 b. Quebec. ti ci ii « in Massachusetts). 19 21 25 Ocean Point. Far Rockaway. Sea Side House. U U (( 22 36 47 54 Freeport. Babylon. Oakdale. Patcnogue. n « it « Hudson and Chatham Branch. Geneva and Lyons Division of N. Y. C. & H. R. K. R. 0 4 9 11 17 Hudson. Claverack. Millerville. Pulver's. Ghent. Chatham. 4 c. Hudson River. 3 b. Quebec. " lie & 117 14 U II 0 14 Geneva. 3 1 Lyons. (Deep drift, overlying •< 6. Salina and 9 c. ( Corniferous. 452 6. Salina. 8" Rhlnebeck and Connecticut Railroad. Troy and Schenectady Division of N. Y. C. & H. R R. R. 0 3 7 11 17 25 35 42 Rhinecliff. Rhinebeck. Red Hook. Spring Lake. JacksonCorners Ancram. Boston Corners. State Line. Connecticut We 4 c. Hudson River. «( 3 b. Quebec. " 1164117 « u <( stern R. R. Junction. 148 151 154 160 166 170 Troy. Cohoes. Crescent. Niskayuna. Aqueduct. Schenectady. 4 c. Hudson River. Falls, 70 ft. the want of a more definite term. They are probably composed of several formations which have not been minutely studied, and are so metamorphosed, contorted, broken and wrinkled in almost every conceivable manner, and so disturbed, inverted and involved with each other, that at present their precise geology cannot be stated. See note 117 on this subject, by Prof. T. S. Hunt. 1 17. GEOLOGY OP EASTERN NEW YORK. — To the east of the Hudson River in New York we find besides the Laurentian rocks of the Highlands, and small portions of Huronian, a great development of the gneiss and mica-schists of the Montalban and of two other and very unlike series. The first of these is the Lower Taconic, consisting of the Stockbridge limestone with quartzite and peculiar slates. This series, together with the Primary crystalline schists, stretches up northward,j)assing along the southeast side of the Highlands, and occupying portions of Eastern New York and Western New England. On the northwest side of the Highlands, extending northward along the valley of the Hudson, and as far as Lake Champlain, is found another series, variously designated as the ing Sillery and Levis). They are generally disturbed and often inverted, and include small outliers and involved portions of Upper Cambrian and occasionally of Silurian strata. This Hudson River and Upper Taconic group is distinct from and superior to the Lower Taconic. It is impossible in the present state of our knowledge of their distribution to define the limits of these various groups of strata to the east of the Hudson, or to say at what stations the Upper Taconic, the Lower Taconic or the Primary rocks are met with. T. S. HUNT. 118. GEOLOGY OF THE HARLEM RAILROAD.— The Laurentian mountains forming the Highlands on the Hudson River, from Peekskill nearly to Fishkill, (see note 6), extend as mountains only about sixteen miles east of that river. The Harlem Railroad runs through valleys, and the Highlands are not observable as a prominent ridge. Bat the series of formations is the same as on the river, con- sisting first of the Laurentian foundation rocks; then, south of these, the later crystalline series to New York City. North of the Laurentian, is the Great Valley, a thousand miles long, made up of the groups variously called Taconic, Quebec, Cambrian or Lower Silurian. This valley, geograph- ically at least, runs across the River Hudson at Newburg and Fishkill, (see note 7), and then runs through the Taconic or Quebec belt to the City of Quebec in Canada. This district has been for a long time the great battle-field of geologists. Its geology can perhaps safely be inferred to be the same as in other portions of the same valley, where, from its fossils and the rocks above and below, its place in the series can be fixed beyond question. 119. The limestones and sandstones used for flagging and building in the various cities along the line of the N. Y. C. & H. R. R. R., are as follows : At Albany, Schenectady, Utica and Rome, 4 a. Trenton limestone, generally of the Birdseye portion, which produces the thickest stone; at Syracuse, Auburn and Geneva, the 9. Upper Helderberg, genei ally the Onondaga or lower portion of it ; from Rochester to Buffalo the 5 a. Medina sandstone is the favorite for these purposes. Some 5. Niagara limestone are used at Rochester and 9. Upper Helderberg or Corniferous at Buffalo, especially for lime burning. But the best flagstones are from the Hamilton and Chemung formations, and gener- ally come from the shores of Cayuga Lake. Large quantities of flagstones are also brought from the upper part of the Hamilton group in the higher parts of the Helderberg, and from the same geological position along the west side of the River Hudson from below Catskill as far as. Kingston. NEW JERSEY. 89 New Jersey.1 List of the Geological Formations on the New Jersey Railroads. 20, Quaternary, or Recent. 19. tertiary (Southern New Jersey.) 18. Cretaceous. g. Upper Marl.3 f. Yellow Sand. e. Middle Marl.3 d. Red Sand, c. Lower Mart.2 b. Clay Marls, a. Plastic Clays. 16. Triassic, or New Red Sandstone. 5 a. Medina s.s. and OneidaConglom. 4c. Cincinnati, or Hudson River. 4 a. Trenton Limestone. 2 b. Potsdam (Green Pond Mt.) 1 b. Huronian (at Trenton.) 1 a. Laurentian. Gneiss, Crystalline Limestone, &c. (The Highland Range.) 2 Producing the green sand marl used in agriculture. 1 Pennsylvania Railroad. Ms. | (United Railways of New Jersey.) Ms. | 3 Perth, Amboy and Woodbridge B.R. 0 19 21 24 27 New York. Rahway. Junction. Woodbridge. Perth Amboy. 16. Triassic. 1 8. Cret's. a. plastic clay U (( 0 1 9 14 19 23 26 31 41 46 47 57 67 85 88 90 ~47 49 "57 63 New York. Jersey City. Newark. Elizabeth. Rahway. Uniontown. Metuchen. N. Brunswick. Monmouth J. Plainsboro. Princeton Jun. Trenton. Bristol, Pa. jrermant'wn J. Mantua. W. Philad'a. I b. Huronian.3 16. Triassic. i c ( 1 1 18. Cret's, a. plastic clay « u u u I b. Huronian.3 u it « u 4 Millstone and Xew Brunswick R. R. 0;New York. 3 IN. Brunswick. 34 Millstone June. 46|Middlebush. 39 |E. Millstone. 16. Triassic. u u u 5 Rocky Hill Branch. 0 41 46 48 New York. Monmouth Jn. Kingston. Rocky Hill. 18. Cret's. a. plastic clay 16. Triassic. " Trap Dike. Princeton Jun. Princeton. 11. Cret's, a. plastic clay 16. Triassic. (E. edge.) 6 Freehold, Jamesburg and Squankum. 41 43 47 52 57 65 74 Monmouth J. Dayton. Jamesburg. Englishtown. Freehold. Farmingdale.4 Sea Girt. 18. Cret's a. plastic clay. « u 11 rl " b. clay marl f 18 Cretaceous. " d. red sand. 1 " e. mid. marl, t " f. yel'w sand. " g. upper marl 19. Tertiary. Trenton. Bordentown. 1 b. Huronian.3 18. Cretaceous (a. and b.) 0 j 18 21 24 27 31 34 39 43 47 50 54 61 62 2 \ mli South Amboy. Old Bridge. Jamesburg. Cranberry. Hightstown. Windsor. Newtown. Yardleyville. Bordentown. Florence. Burlington. Beverly. Riverside. Palmyra. Camden. Philadelphia. )y Division. 18. Cret's. a. plastic clay . u ( U ' b. clay marl. ( . u ( U 1 «( ' a. plastic clay. t < < 1 b. Huronian.3 7 Belvidere Division. 0 30 36 38 40 41 43| 46i Philadelphia. Trenton. Greensburg. Somerset Jun. Wash. Cross'g. Titusville. Moore's. Lambertville. 1 b. Huronian.3 16. Triassic. Trap Dike. " (Goat Hill) 4. Green sand marl grits. 1. The excellent Reports on the Geology of New Jersey, by Prof's H. D. Rogers, Wm. Kitchell and Geo. H. Cook, with the large and beautiful Geological Map by Prof. Cook, and the author's own observations, are the authorities for the geology of the Railway Guide of this State. It has also been revised and corrected by Prof. John C. Smock, the Assistant State Geologist. 3. New York, Trenton and Philadelphia are on Dr. T. S. Hunt's 1 d. Montalban." (See Canada ) 90 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N.J.) Ms. 1 Belvidere Division— Continued. Ms. | 11 Camden and Atlantic R. R. 50 56 62 68 72 75 80 81 88 95 Stockton. Pt. Pleasant. Frenchtown. Holland. (Muscone'g M.) Riegelsville. (Pohatcong M.) Carpenterville. Lehigh June. Phillipsburg. (Marble Mt.) Martin's Creek. Belvidere. 16. Triassic. " Trap Dike. « " Trias, congl. 1 a. Laurentian. 4 a. Trenton. 1 a. Laurentian. 4 a. Trenton. u u 1 a. Laurentian. 4 a. Trenton. " &4 c. Hudson. 0 7 10 16 19 23 25 27 30 32 37 42 ^8 Camden. Haddonfield. Ashland. Berlin. Atco. Waterford. Ancora. Winslow. Hamm onto wn. De Costa. Elwood. Egg Harb. City 18. Cret's. a. plastic clay, j " b. clay marl. "j " d. red sand, j " e. middle marl ( '• g. upper marl. 19. Tertiary. u « (C u u u a ti 46 56 Lambertville. Flemington. 16. Triassic. May's Landing. u 8 Mercer and Somerset R. R. 46 52 59 Pomona. Atsecon. Atlantic City. u a 20. Quaternary. 0 5 10 16 23 30 Trenton. Somerset Jun. Pennington. Hopewell. Harbinger. E. Millstone. N. Brunswick. 16. Triassic. « (I u u 19 28 Atco. Atsion. 19. Tertiary. 12 West Jersey R. R. : 4 8 18 24 35 39 59 81 Philadelphia. Camden. Gloucester. Woodbury . Glassboro. Franklinville. Vineland. Millville. Mt. Pleasant. Cape May. 1 b. Huronian. (18. Cretaceous. ( "a. Plastic clay b. Clay marl, c. Lower marl d. Red sand, e. Middle marl f. yellow sand. 19. Tertiary. « < < i 9 Delaware and Boundbrook. (New Route, New York to Philadelphia) 0 1 8 12 24 31 35 37 41 42 45 5^ 53 58 60 65 67 73 76 80 88 New York. Jersey City. Bergen Point. Elizabeth. Plainfield. Bound Brook. Weston. Hamilton. Vanaken. Harlingen. Skillman. Hopewell. Pennington. Trenton June. Yardley, Pa. Woodbourne. Langhorne. Somerton. Bethayres. Jenkintown. Philadelphia. VW9 16. Triassic. r;S w : ffel •< 1 ?f ii < < « « < it « " ] 3$ " iZjS 1 b. Huronian. - ^ « *g " J ^ 18 Glassboro. 26 Elmer. 37 Bridgeton. u (( u 26 Elmer. 34Yorkstown. 38 Alloway. 39 Middletown. 43 Salem. u u u u 13 New Jersey Southern. 0 7 11 16 22 26 27 33 41 47 New York. Sandy Hook. Seabright. Long Branch. Eatontown. Shark Rivei*. Farmingdale. Squankum. Bricksburg. Manchester. Whiting's. 20. Quaternary. 1C " e. middle marl (( U " f. yel'w sand. " g. upper marl. a u 19. Tertiary. u « 10 Camden and Burlington County R.R . 0 9 19 25 26 44 51 1 Philadelphia. Camden. Moorestown. Mt. Holly. Pemberton. New Egypt. Imlaystown. .Hightstown. 18. Cret's, a. plastic clay. " b. clay marl. '' c. lower marl. " e. middle marl u j f . yel'w sand. ( g. upper marl " c. lower marl. " b. clay marl, . 47|Whiting's. " NEW JERSEY. 91 Ms. IV ew Jersey Southern— Continued. 15 Lehigh Valley B. B. 59 Shamony. 19. Tertiary. Ms. | (Easton and Amboy Division.) 71 Atsion. u 0 \Ta«r Ynvb- 79 85 95 Winslow June. Cedar Lake. Vineland. ii u ii 1 Q Jersey City. Bergen Hill. j 16. Triassic. Deep ( rock-cut in Trap-dike. (( s-\ 107 114 117 Bridgeport. Greenwich. Bay Side. u y 14 19 20 Elizabeth. Rahway. Metuchen. S " 0 •< I 47 55 Whitings. Hanover. « 0 g Perth Arnboy. Ford's. 18. Cret's. a. plastic clay. « ii 61 65 New Lisbon. Pemberton Jn. u tt H Metuchen. 16. Triassic. Camden. 18. Cretaceous. 20 Metuchen. Philadelphia. 23 26 S. Plainfield. Newmarket. (Tom's Kiver Branch.) 30 Bound Brook. 0 Sandy Hook. 20. Quaternary. 35 S. Somerville. 41 Manchester. 19. Tertiary. " 38 Flagtown. 49 Tom's River. " 41 Neshamic. 54 Cedar Creek. " 45 Three Bridges. 60 Waretown. " 51 Flemington J. 61 Barnegat Jun. " 54 Lansdown. 57 Midvale. 0 Port Monmouth Branch (N.) Sandy Hook. |20. Quaternary. 61 Pattenburg. ' Tunnel 1 mile 1 a. Laurentian. 16 17 Eatontown. Shrewsbury. 19, Cret's, e. midl. marl. 14 62 in Musconetco West End. ngMt.) ^ 19 25 Red Bank. Pt. Monmouth. u j d. red sand. ( c. lower marl. " b. clay marl. 65 69 Bloomsbury. (Pohatcong Mt. Kennedy. 4 a. Trenton, on N.) 1 a. Laurentian. 14 Central B. B. of New Jersey. 73 74 Phillipsburg. Easton. 4 a. Trenton. ii OjNew York. (Cont'd. in Pa.) 1 Jersey City. 16. Triassic. 8 Bergen Point. a 16 Delaware, Lackawana and Western. 12 Elizabeth. u (Morris and Essex Division, or Main Line.) 24Plainfield. tt 31 Bound Brook. (t 0 New York. 36 Somerville. tt 2 Hoboken. 16. Triassic. 45 White House. ii Tun'l. in Trap. I 50 Pickels Mt. onS. " Trap Dike. T.phrmnn " 10 13 Newark. Orange. ii 52 Annandale. 54 High Bridge. 1 a. Laurentian. K " &i^n 15 19 South Orange. Millburn. Trap 1st Mt. 58/ilo" C±*-pr\n.n ll r1" o 22 Summit. " 2dMt. 59 61 64 66 69 74 75 N. Hampton J. Asbury. Valley. Bloomsburv. (Pohatc'g Mt.) Springtown. Phillipsburg. Easton. §t3 * 4 a. Trenton. 1 a. Laurentian. 4 a. Trenton. u 25 31 34 38 40 43 48 53 Chatham. Morristown. Morris Plains. Denville. Rock away. Dover. Drakesville. Stanhope. Long Hill, S. 1 a. Laurentian. 1 Iron ore j District. (Contin'dinPa.) 56Waterloo. 62 Hackettstown 4 a Trenton. (High Bridge and Chester Branch.) 68 Port Murray. " & 4c. Hudson. 54]High Bridge. 11 a. Laurentian. 59 California. « 71 Washington. 80 Stewartsville. 1 a. Laur. & 2 c.Potsdam. 4 a. Trenton. 62 (Germ. Valley) 4 a. Trenton. 671Chester. ll a. Laurentian. 85 Phillipsburg. 86(Easton. it AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (N. J.) Ms. | 16 Main Line— Continued. 22 Sussex. Bailroad. Ms. (Branch of Morris and Essex."* 71 75 80 82 84 87 90 92 Washington. Oxl'rd Furnace Bridgeville. Manurika Ch'h. (Tunnel.) Delaware. Portland, Pa. Columbia, Pa. Water Gap, Pa. (Contin'd in Pa.) 1 a. Laurentian. (Pohatcong Mt.) Tunnel(Scott's Mt.W.) 2 b. Pots. & 4 a. Trent. « n ( 4 c. Hudson River, •j (Jenny Jump Mt.on E. (la. Laurentian.) 4. c. Hudson River. u j 4 a. Trenton. ( 4 c. Hudson Riv. 2 ms I 5 a. Oneida conglom. •< and Medina s. s. ( (Blue Mountain.) 5 6 10 13 14 15 19 Waterloo. Whitehall. Andover. Newton. Branchville J. Lafayette. Augusta. Branchville. 1 a. Laurentian. Gneiss. u j 4 a. Trenton. ( 4 c. Hudson River. 4 a. Trenton. u { 4 c. Hudson River. ( 4 a Trenton. 4 c. Hudson. 13 18 21 Branchville J. Sparta. (German Flats) Franklin. j 4 a. Trenton. ( 4 c. Hudson, 1 m. 4 c. Trenton. ft " (Zinc mine.) 17 Boonton Branch. 24 Montclair and Greenwood Lake B. B. 9 Jersey City. 9N. Newark. 11 Bloomfield. 16 Triassic. 14 u 0 2 9 12 17 25 27 29 32 37 70 86 New York. Hoboken. Rutherford Pk. Passaic. Paterson. Little Falls. Lincoln Park. Whitehall. Montville. Boonton. Denville. Washington. Easton. 1 b. Huronian. 16. Triassic. « a Trap 1st Mt. u Trias, congl. 1 a. Laur. RamapoMt. « n By main line above. M 12 14 15 16 17 19 23 24 28 32 36 37 38 40 43 45 50 Montclair. " Montcl. H'ghts. Great Notch. Cedar Grove. Little Falls. Mountain View Pequannock. PomptonPl'ns. Pompton. Medvale. Ringwood Jun. " Park Monk's. Hewitt. Cooper. Lake Side. Greenw'd Lake " Trap Dike. " (1st Mt.) i n 11 (2dMt.) < < 1 a. Laurent. Ramapo Mt u I 1 ( « ( < ( Branches to Iron Ore Mines, from Morris and Essex Division. 18 Hibernia Mine B. B 40,Rockaway. 42 Beach Glen. 44 Hibernia. 1 a. Laurentian. a (( 19 Mount Hope Mine B. B. 25 New Jersey Midland B. B. 40 42 Rockaway. jl a. Laurentian. Mt. Hope. " 0 18 Jersey City. 16. Triassic. Hackensack. « ' 20 Port Oran and Mt. Hope B. B. 20 22 26 35 36 37 47 56 57 58 66 74 88 Paterson. Hawthorne. Wortendyke. Pompton Jun. Bloomingdale. W. Bloomingd. Newfoundland. Ogdensburg. Sterling Hill.5 Franklin.5 (German Flats) Deckertown. Unionville. Middlet'n,N.Y. « « U 1 a. Laurentian. u 2 b. Potsdam and congl. "(Green Pond Mt.) 1 a. Laurentian. " cryst. 1. s. <( U 4 a. Magnesian 1. s. 4 c. Hudson River. a it 43 44 47 Dover. Port Oran Jun. Mt. Hope. 1 a. Laurentian. n « 21 Chester Bailroad. 43 46 49 55 Dover. Chester Jun. Suckasunny. Chester. (Schooley's Mt. 1 a. Laurentian. « tf u to the West.) 22 Ogden Mine B. B. 10 miles R. E. Ogden Mine to Morris Canal. 5 3 Stanhope. 56 Morris Canal. eO^opatc'ng lake 64 4 miles by lake 70,0gden Mine. 1 a. Laurentian. (i ic n 5 Zinc ore mines at these places in the crystal- ine limestone ; also Franklinite. 26 Erie Bailwav. (The New Jersey portion of this R. R. is given with those of the State of New York.) PENNSYLVANIA. 93 Pennsylvania, BY PROFESSOR J. P. LESLEY, THE STATE GEOLOGIST. List of the Geological Formations of Pennsylvania. Prof. Dana's Table of the Formations. Names Provisionally adopted in the Second Geological Survey of Pennsylvania, by Prof. J. P. Lesley. OldPenn. Nos.oflst Geo. Sur. 20. Quaternary. 20. Quaternary. 16. Triassic. 16. Triassic. 14 c. Upper Coal Measures. 14 c. Upper Barren Measures. XIII. u u 11 Monongahela Riv. Coal Series. <' 14 b. Lower Coal Measures. 14 b. Lower Barren Measures. u u u 11 Allegheny River Coal Series. u 14 a. Millstone Grit, 13 b. Upper Subcarboniferous. 14 a. Pottsville Conglomerate. 13 b. Mauch Chunk Red Shale,] to XII. XL (Umbral.)' 13 a. Lower Subcarboniferous. 13 a. Pocono Grey Sandstone, j §; X. (Vespertine.) J §' 12. Catskill. 12. Catskill Red s. s. 1 (Ponent.) IX. lib. Chemung. 11 b. Chemung. VIII. 11 a. Portage. 1 1 a. Portage. | t) a C Genesee. 10. Hamilton, •< Hamilton. 10 c. Genesee. 10 b. Hamilton. tt ( Marcellus. 10 a. Marcellus. 9. Corniferous. 9. Upper Helderberg. '< 8. Oriskany. 7. Lower Helderberg. 8. Oriskany. J 7. Lower Helderberg, ~] VII. VI. 5 b. Clinton. 5 a. Medina and Oneida. (Lewistown Limestone.) K 5 b. Clinton. 5 a. Medina. | 2 ' it V. IV. u u 11 Oneida. j * " 4 c. Cincinnati. 4 c. Hudson River.") Q III. 4 b. Utica. 4 b. Utica. | OT (( 4 a. Trenton. 4 a. Trenton. II. 3. Canadian. 3 a. Calciferous. | i'o 11 '2. Primordial or Cambrian. 2 b. Potsdam. J -3 ' I. 1. Archaean. 1. Azoic. NOTES ON THE TABLE OF FORMATIONS.— All beneath the Potsdam is styled Azoic, because no survey has yet sufficiently differentiated the mass into its several systems. The term Eozoic is rejected partly because both too vague and too shifting, and partly because it would suit the Cam- brian system better than the Huronian and Laurentian, both of which remain to all intents and purposes Azoic. The terms Huronian and Laurentian are known to apply lithologically to rock masses in Pennsylyania, but their geographical relationships in the State are but imperfectly made out. Much uncertainty still exists about the lines of demarcation between some of the formations in Pennsylvania, such as between the Catskill and Chemung ; the Lower Helderberg and Clinton ; the Hudson River and Utica; the Calciferous and Potsdam. Niagara, Onondaga or Salina, Corniferous and other names are omitted because of their un- certain presence in many districts of the State; and because of the narrowness of their upturned outcrops where they do exist. Some of the places named in the following lists occupy positions covering the width of two or more steeply outcropping formations, to any one of which therefore they might be assigned. In the northern and western counties it is often impossible to say precisely whether places stand upon Chemung, Catskill, Pocono or Mauch Chunk rocks. In such cases, Chemung has been preferred, because the others might be studied in the surrounding hills on account of the general horizontality of the bedding. J. P. L. 94 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (PA.) Pennsylvania. Pennsylvania Railroad. Ms. | New York Division. Pennsylvania Railroad. Ms. | Pennsylvania Division— Main Line— Con. 0| W.Philadelphia. 61 Kensington. l 13IHolmesbur£. 1. Azoic. 20. Quaternary. ti 61,Bird-in-Hand. 69 Lancaster. j 2-4. Siluro-Cambrian ( Limestones. (4 23 Bristol. <( 76;Landisville.5 (i 26 Tullytown. u 81 [Mount Joy. t« 32 Morrisville. 1. Azoic. 87 Elizabethtown.6 16. Triassic. 33 Trenton, N. J. (See New Jersey.) 95 Branch Inter. 7 ® b 5 b. Clinton. [• W ° ~ J :»?! 7. Lower Helderberg. ~0 8 17 24 32 37 38 45 51 57 62 67 Western Pennsylvania Division. Blairsville Int6 5 Livermore. Saltsburg.66 Roaring Run. Leechburg.67 Allegheny June. Freeport. Tarentum. Springdale. Montrose. Sharpsburg.68 Allegh'y City69 14 b. L. Coal Measures. 14 b. Barren Measures. <« u 14 b. L. Coal Measures. u (I (( 14 b. Barren Measures. « (i Lewisburg Centre and Spruce Creek Branch. 0 1 10 18 Montandon. Lewisburg. Vicksburg. Mifflinburg. Laurelton. 5 b. Clinton. « it i< U Northern Central Railway. 0 47 57 67 73 79 84 88 91 93 99 Baltimore, Md. Hanover Jun.78 York. Conewago.74 Goldsboro.75 Red Bank. Bridgeport. 7 6 Harrisburg. Marysville. Dauphin. 8 Clark's Ferry. (See Maryland.) 2-4. Siluro-Cambrian. (i 16. Triassic. n u 4 a. Trenton. 4 b. Utica. 5 a. Oneida. 13 b. Mh. Ck. Red shale. 12. Catskill. 0 10 21 Butler.70 Delano. Butler Junction. 14 b. L. Coal Measures. u 11 Lewistown Branch. 1 13 Lewistown. Mann's.71 Milroy. 7. Lower Helderberg. 4 a. Trenton. 4 and 3 a. Calciferous. 61. Old limonite mines (very rich), Schoenberger's. A few miles further on are the new and curious Leathercracker Cove limonite mines of the Cambria Company. 62. Important outcrop of the iron ore beds underlying the Pittsburg coal bed. 63. Mauch Chunk red shale iron ore beds in the ravines of the mountain. 64. Centre of the coke trade. Miles of coke ovens all along the road from here towards Greensburg and towards Mount Pleasant. (See Coke Keport, L. 1877, Second Geological Survey of Pa.) 65. Occupies the same position on the Kiskaminitas that Connellsville (64) does on the Youg^hioghany, in the centre of the narrow first gas coal basin west of Chestnut ridge. Pittsburg coal bed on the hills opposite, south side river. 66. Two miles further the Pittsburg bed occupies the central hills of the third gas coal basin. Old salt wells along the river bringing up brine from the Pocono sandstone. 67. Famous gas well 1,250 feet deep, on south side of river. Gas from first (?) oil sand (of Butler and Venango) brought across the river on bridge, to rolling mill. Gas furnaces for puddling iron here first successfully used. See Keport L. Geological Survey. 68. Iron works fired by natural gas brought in a pipe, 40 miles long, from the great gas wells in northern Butler County. 69. Remark the typical Eddy Hill in the centre of plain, on which the College formerly stood. 70. To get to the first productive deep oil wells one must go several miles northeast from Butler towards St. Jo, Petrolia, &c. The road descends to the Alleghany River level over lower productive coal measures. 71. In the gap of Jack's Mountain is the spring and former residence of "Logan the Indian." Trenton rocks form cliffs. The Kishacoquillas Valley is shut in east of Milroy by two very remark- able " ships keel " (synclinal) mountains of Medina and Oneida. The hull is Oneida, the keel Medina. The valley and its three arms are all surrounded "by terraces of erosion. Taylor thought it was a terrace of deposit and that the valley had been a lake. A turnpike drive across the valley from Logan's Gap, northwest, by the old iron mines, and over the Standing Stone mountain, to Greenwood furnace, with its fossil ore mines and fine scenery, will repay. A fault cuts the S. S. Mountain. The Clinton shales are curiously crumpled in the cuttings descending to the furnace. 72. The barren coal measures cover most of Indiana County. 73. Magnetic and limonite iron ores from one to five miles west of this and in the ridges to the north and south. 74. Cliffs of greenstone trap overhang the road and river. 75. More trap cliffs from here to Red Bank. Magnetic iron ore bed above, back from the river. 76. Fine long cuttings through the Siluro-Cambrian limestone opposite Harrisburg. PENNSYLVANIA. 99 Ms. | Northern Central Railway— Continued. Erie Railway— Continued. Ms. | Honesdale Branch. lOd Halifax. lllMillersburg.?7 118 Mahantango. 127Trevorton.78 133Selinsgrove.79 138Sunbury.26 (Philadelphia anc miWilliamsport89 1 87 Cogan Valley. 192 Trout Run.80 198Bodine's. 202 Ralston. 203McIntyre.81 207 Roaring Run. 21 2 Carpenter's. 218 Canton. 220jMinnequa Sprs. 222 Alba.83 231 Troy. 236 Columbia XRds 241 Snediker's. 247 State Line. 256JEtmira, N. Y. 12. Catskill. 13 b. Mh.Ck. Red shale. 12. Catskill. a 10. Hamilt. & 7 Lew. l.s. 12..Cats'l or 11 b. Che'g. Erie to Williamsport.) 10. Hamilton. 12. Catskill. u u 14 b. Coal Measures. « 12. Catskill. 1 1 b. Chemung. « 12. Catskill. u 11 b. Chemung. « u u 0 4 8 12 16 20 25 Lackawaxen. Rowland's. Millville. Kimble's. Hawley. White Mills. Honesdale.83 12. Catskill. u (I 11 b. Chemung. « « Delaware and Hudson Railroad. 0 7 13 16 Carbondale. Jermyn. Dickson. Scranton. j 14 b. Anthracite Coal ( Measures. u u Delaware, Lackawanna & Western R.R. 0 84 92 96 100 104 109 115 122 128 136 139 149 159 164 174 176 183 190 196 210 New York. Delaware. • Water Gap.84 Stroudsburg. 85 Spragueville. Henryville. Oakland. Forks. Tobyhanna. Goldsboro.86 Moscow. Dunning' s. 87 Scranton. Abington. Factory ville.88 Nicholson. Foster. Montrose. New Milford. Great Bend. Binghamton. ( Cont'd from N. J ersey .) 4 c. Hudson River. 5 a. Oneida. 10. Hamilton. 12. Catskill. lib. Chemung. 13 a. Pocono Sandstone. u (( ( 14 b. & c. Anthracite "I Coal Measures. 12. Catskill. u 11 b. Chemung. n u 41 (Continued in N.Y.) Shamokin Division. 13? Sunbury.26 156 Shamokin. 1 2 * 164Mt Carmel.106 12. Catskill. j 14 b. Anthracite Coal Measures. « Erie Railway. Jefferson Branch. 0 Susquehanna. lljStarrucca. 14 Thompson's. 25Herrick Centre. 33'Forest City. 38 Carbondale. 11 b. Chemung. 12. Catskill. (i u 13 a. Pocono. ( 14 b. Anthracite Coal ( Measures. 77. End of the Carlisle-Duncannon long trap dike is just back of this. See Notes 9 and 170. 78. West end of the anthracite coal field. No anthracite west of this Fine study of the lowest beds in the gap of the Conglomerate mountain. 79. Easternmost limit of the fossil ore outcrops of the Lewistown belt. Good anticlinal sections of 10. Genesee, Hamilton, Marcellus and 7. Lewistown 1. s. between here and Sunbury. 80. Entrance to the long gorge of the Lycoming Creek through the Alleghany Mountain plateau; similarly situated to Queen's Run (32). Gorge exactly like that of the West Branch Susquehanna (32). Coal patches 1000 feet above road level, up Trout Run. 81. Old iron mines under the cliffls of Pottsville conglomerate forming the cornice of the mountain walls. Great incline plane up mountain to Mclhtyre coal mines. 82. The Armenia Mountain of Catskill and Pocono dominates this on the west. On its top is the east end of the Blossbnrg-Antrim semi-bituminous coal basin. 83. Head of the Delaware and Hudson Canal supplied with Carbonale and Scranton anthracite coal of the third great basin by railroads coming out of the basin over the Wyoming mountains. 84. Celebrated for its scenery. Large hotels. Indian staircase in the gap made by massive north dipping outcrops of Medina and Oneida. One mile before reaching these rocks are quarries of Hudson River roofing slate on both sides of the Delaware River. 85. Excellent geological headquarters. Fine exposures of Oriskany, Waterlime, &c., &c., in the ravine of Broadhead's Creek between the gap and Stroudsburg. Fossils abundant around Strouds- burg. Buttermilk and other cascades to the right of the road, (east). Noble carriage drive and exquisite scenery, for 30 miles from Stroudsburg to Milford. Lake on top of the Blue (Kittatinny) Mountain, 10 miles east of S. Fine drive southwest through Red Valley (Clinton) and over outcrops of Helderberg to the Wind Gap. Ascent of the Pocono Knob (Catskill) to the northwest. 86. Head waters of Lehigh, on the extreme highland, "shades of death," "beach woods." a plate of Pocono rocks covered here and there by synclinal outstretches of Mauch Chunk red shale. 87. Commence descent into third anthracite coal field by a ravine through the Pottsville conglomerate. Under it the iron ore of XI. has been opened. 88. Now over the Elk Mountain range and synclinal of Pocono in the first bituminous coal basin; but no coal. 100 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (PA.) Delaware, Lackawanna <& Western — Cont. Ms. | Lehigh Valley Railroad— Continued. Ms. | Bloomsburg Division. / ~\A K OT.rl r. ^ 3£-l 107 Mauch Chunk98| 13 b. Mauch Chunk r.s. 0 Scranton. k J-^t k/. CU.J.U. b« •^ Anth'e Coal •-• P 114Penn Haven. 120 Drake's Creek. 12. Catskill. 6 12 20 24 33 41 47 54 58 68 Lackawanna. Wyoming. Plymouth. Nanticoke.89 Shickshinny. 9 ° Beach Haven. Briar Creek. Espy.91 Rupert. Danville.92 ( Jileasures. u 11 14 a. Pottsville 11 b. Chemung 10. Hamilton. 8. Oriskany. 11 b. Chemung 5 b. Clinton. 111 Conglo. 130 132 J42 146 152 158 162 168 Tannery. Whitehaven. Summit Siding. Fair View.99 Newport. Sugar Notch. Wilkesbarre. Fort Blanchard. (Pa. & N. Y. ] 13 b. Mauch Chunk 13 .a. Pocono. 13b.Mah.Ck. r.s. 14 a. Potts. Cong. 14 b. An. Cl. Mers. u Lit.) ^ o B 1 80 Northumberla'd 11 b. Chemung. 170 172 Pittston. L & 13 Junc'n u Lehigh Valley Railroad. 183 186 Falls.100 McKunes.i01 12. Catskill. ) 0 Perth Amboy. (See New Jersey.) 194 Tunkhannock. a 61 Easton.93 3 a. Calciferous. 199 Vosburg. " 73 Bethlehem.94 (C 206 Mehoopany. " 88 Allentown. « 209 Meshoppen. u 81 Catasauqua. 9 5 4 a. Trenton. 217 Laceyville. ** 87 Laury's. 4 c. Hudson Riv. Shales. 227 Wyalusing. 11 b. Chemung. 94 Slatington.96 u 233 Frenchtown. " 103 Lehighton. 9 7 11 b. Chemung 237 Rummerfield. " 89. River breaks out of coal field under cliffs of Pottsville conglomerate and runs in Mauch Chunk red shale. 90. Eiver cuts across the coal field, leaving a small mound of coal measures isolated on the west bank. 91. Square across to the north, 6 miles, is seen the high end of the Schickshinny (Pocono) Mountain, reached by a good road from Bloomsburg, 7 miles, and affording one of the finest pano- ramic views in Pennsylvania. 92. Famous and extensive fossil ore (Clinton) iron mines, sunk deep. Iron works here and at Blopmsburg. Ore crops along both sides of mountain ridge for 15 miles. May be studied on the anticlinal arch, in the gaps at both places. See also Note 134. 93. Famous collecting ground for rare minerals. Azoic ridge to the north. Remarkable outcrops, natural and artificial, of the calciferous limestones along the river north bank to Bethlehem. Many iron works. Laurentian rocks south of the river all the way up. 94. Zinc works. Saucon zinc mine in the mountains to the south, easily reached by N. P. Railroad. 95. Perhaps the best limonite open mine in America for study, lies 4 miles west, (Ironton). Best reached on wheels; also by rail, over a long, high iron bridge. Manganese, kaolin, lignite, with the ore. Mine very large and old. 96. Extensive roofing slate quarries here. Two miles further enter the Lehigh Water Gap between sloping walls of Oneida and Medina. Issue upon Clinton red shale. Notice a fine Eddy Hill opposite. Behind it is a terminal moraine, which a glacier, formerly descending the Lehigh, left across the mouth of the Aquashicola Creek, forcing that stream to excavate a new channel in the solid Medina rocks of the mountain. Two miles farther, at the bend of the river, north bank, the ice has crushed over the slates, polished the surface, and loaded it with till. From the Gap Hotel ride to the top of Stone Hill (Oriskany outcrop) for the view through the gap. Hydraulic lime quarries on the way up. 97. On the crest of one of the grandest anriclinals in the state. The gently south dipping Chemung and Hamilton here turn over and descend vertically. From here to Mauch Chunk the Devonian and Bernician systems are complete, vertical, and crossed at right angles, so as to give an - easy section of 10,000 feet, up to the coal measures. 98. Fine geological headquarters. The gap in the second mountain gives the whole Pocono and Catskill. The river above gives the Mauch Chunk red shale. Mt. Pisgah the Pottsville conglom- erate. Nine miles up the "passenger tourist's gravity road" lies the famous Summit Mine, mammoth coal bed, 60 feet thick, open quarry. In the gap notice the islet on which the first anthracite iron furnace once stood. Good specimens of dendrites to be got from the plates in the mountain opposite the hotel. From here to Penn Haven, the fine gorge of the Lehigh with its ox bow bend and walls of Catskill rocks. 99. Ascend 400 feet higher to the summit of Penobscot Knob, affording the finest view in the state. Notice the glacial scratches on the rock on the highest summit of the knob. From here all the collieries are visible below, and the whole structure of the third anthracite coal basin can be made out. Down Solomon's gap by three old incline planes, notice the erosion of the red shale. 100. Buttermilk Falls, not the falls of that name near Stroudsburg, but in nearly the game rocks, with the hollows filled with gravel. 101. Enter the long gorge of the north branch of the Susquehanna through the Allegheny mountain plateau, capped (further west) by the Mehoocany coal basin. PENNSYLVANIA. 101 Lehigh Valley Railroad. Ms. | (Pa. & N. Y. R. R.)— Continued. Danville, Hazleton «& VVilkesbarre Railroad. 0 11 20 54 Sunbury.86 Danville.134 Catawissa. Conyngham. Cranberry. Hazleton.104 L2. Catskill. 5 b. Clinton. Lib. Chemung. u 14 b. Anth. Coal Mres. 14 244i 248 255 259 263 265 268 Wysauking.102 Towanda. l7 3 Ulster. Milan. Athens. Sayre. Waverlv, N. Y. lib. Chemung. c t i « Montrose Railroad. Mahanoy, Beaver Meadow & Hazleton Branch. Oi 14 22 28 Montrose. Hunter's. Springville. Lobeck. Tunkhannock. lib. Chemung. 12. Catskill. (i a (1 54 60 70 Penn Haven Ju. Weatherby. Eckley. 13 b. Mauch Chk. r. s. 14 b. Anth. Coal Mres. it 70 66 70 Hazleton.104 Beaver Meadow. Audenried. M (4 (1 Central Railroad of New Jersey. 75 86 95 109 120 127 145 158 171 174 183 187 193 195 Easton.93 Bethlehem.94 Catasauqua. 9 5 Lehigh Gap.96 Mauch Chnk.98 Penn Haven Ju. White Haven. Penobscot." Ashley. Wilkesbarre. Pittston. Spring Brook. Scranton. Green Ridge. 3 a. Calciferous. « 4 a. Trenton, lib. Chemung. 13 b. Mauch Chunk r. s. « 12. Catskill. « 14 b. Anth e Coal Mres. 1 1 gP it If p-gsJi J cL p" <& 59 66 71 73 81 84 89 93 100 Black Creek Ju. Hartz's. Switch Back. Quakake Junct. Mahanoy. Shenandoah. Raven Run. Centralia. Mt. Carmel.105 II II 13 b. Mauch Chunk. 14 b. & c. Coal Mea'res. (i 14 It (( Barclay Railroad. OiTowanda.103 7 Greenwood. 16| Barclay.106 11 b. Chemung. 12. Catskill. 14 b. Coal Measures. Philadelphia and Reading Railroad. State Line and Sullivan Railroad. 0 4 24 29 Towanda.103 Monroeton. Dushore. Bernice. 11 b. Chemung. it 12. Catskill. t 14 b. Loyalsock -j Coal Measures, semi- ( Anthracite. 0 4 8 14 17 22 24 28 82 40 Philadelphia. Belmont. W. Manay'k107 W.Consho'n108 Bridgeport. * ° 8 Port Kennedy. Valley Forge110 Phcenixville.111 Royer's Ford. Pottstown.113 1. Azoic. 14 11 it 3 a. Calciferous.? 2 b. Potsdam. n 16. Triassic. . i. 1 O1 20. QUATERNARY. T20 d. Alluvium, Peat, ) 20 c. Lacustrine Deposits, 1 20 b. Forest Bed. [20 a. Erie Clay, Alluvium, Peat, General Loess, Missouri, Illinois, etc. [ada, etc. Erie Clay, Boulder Clay, Can- rr. 14. COAL MEASURES. f 14 c, Upper Barren Measures. I 14 c, Upper Coal Group, 1 14 b, Lower Barren Measures. [14 b. Lower Coal Group, Upper Barren Measures, Pa. Upper Coal Group, Pa. Lower Barren Measures, Pa. Lower Coal Group, Pa. I CONGLOMERATE. 14 a. Conglomerate. Serai Conglomerate, Pa. I ~tl CARBONIFEROUS LIMESTONE. 14 a. Maxville Limestone. Chester Limestone, Illinois. 6 13. WATERLY. I 13 d. Cuyahoga Shale. ! 13 c. Berea Grit. ] 13 b. Bedford Shale. IJ3 a. Cleveland Shale. fVespertine, Pennsylvania. J Kinderhook Group, 111. I Marshall Group, Michigan. [Knobstones, Kentucky. 11. ERIE. 11. Erie Shale. j 11 b. Chemung, NewYork. (11 a. Upper Portage, N. Y. vonian. 10. HURON. -I 10 c. Huron Shale. (" 10 c. Gardeau and Genesee Shales, New York. •{ lOc. U.CadentBlk. Shale VIII. ofPa.&Va. [etc. tlOc.Bk. Sh. Ky.,Tenn.,Ia., & 10. HAMILTON. 10. Hamilton Limestone. 10. Hamilton Group, N. Y. 9. CORNIFEROUS. j 9 b. Sandusky Limestone. / 9 a. Columbus Limestone. j 9. Corniferous and Onon- ( daga Limestone, N.Y. 8. ORISKANY. 8, Oriskany Sandstone ? 8. Oriskany Sandstone, X. Y. 7. HELDERBERG. 7. Waterlime. 7. Waterlime, New York. a 6. SALINA. 6. SalinaShales and Gypsum. 6. Salina Group, New York. \ Upper Siluria 5. NIAGARA. 5 h. Hillsboro Sandstone. 5 g. Cedarville Limestone. 5 f, Springfield Limestone. 5 e. West Union Limestone. I ft'di Niagara Shale. I 5 c. Dayton Stone. I 5 b. Clinton Limestone; I 5 a, Medina Shale. 5. Niagara Group, NewYork, etc. 6 b. Clinton Group, N. Y. 5 a. Medina Group, N. Y. .1 j3 4. CINCINNATI. ( Lebanon Beds. -< Cincinnati Beds. ( Point Pleasant Beds. 4 a. Hudson and 4 c. Tren- ton Groups, New York. cc NJ 2 & 3. PRIMORDIAL. [In borings.] j 3 a, Yellow Magnesian I. s. "j 3 a. Yellow Massive s. s, 3 a. Calci's sandrock ? N. Y. 2 b. Pot'm sandstone? N. Y *Prepared by Prof. J. S. Newberry, Chief Geologist of Ohio, 110 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (OHIO.) Ohio/ Ashtabula, Youngstown and Pittsburg Rail- Ms. ! road. Atlantic & Great Western R. R.— Continued. Ms. | Mahoning Division. 0 L.S.& M.S.R.R. 0 Sharon. 1 Ashtabula. 11. Erie Shale. 7 Hubbard. 14 b. Coal Measures. 8 Austinburg. ii 15 Youngstown. 1 3. Wav'y & 14 a. Cong. 12 Eagleville. ii 23 Niles. ii 16 Rock Creek. ii 31 Leavittsburg. ii 24 Orwell. "& 13. Waverly. 40 Mahoning. 14 b. Cl. Mres. " 29 Bloomfield. 13. Waverly. 51 Mantua. ** 34 Bristolville. " 57 Aurora. 14 a. Conglomerate. 40 Champion. ii 65 Solon. '* 45 Warren. « 75 Newburg. 13. Waverly. 50 Niles. ii 80 Cleveland. 11. Erie Shale. K K j 13. Waverly, 14 a. Niles and New Lisbon Branch. DO uirard. I Cong., 14 b. Cl. Mres. 0 Niles. 13. Wav'y & 14 a. Cong. 60 Youngstown. it 6 Austintown. 14 b. Coal Measures. 65 Struther's. 14 b. Coal Measures. 12 Canfield. ii 68 Lowell. " 18 Green. ii Atlantic and Great Western Railroad. 23 25 Leetonia. Franklin. 14 U 0 Cincinnati. 33 New Lisbon. tt 59 Dayton. L Cincinnati Group. Liberty and Vienna Branch. 70 Osborne. 0 Vienna. 14 b. Coal Measures, 76 Enon. 80 Springfield. 89 Rowlnsvillft 11 5. Niagara. 8 Vienna Junction t< Baltimore, Pittsb'g & Chicago, (B. & O. R.R.) M 62 Francisco. M 174 Barren Lake. i 3. 66 Grass Lake. " 179 Niles. J ? 69 Leoni. 76 Jackson. 14 c. Coal Meas. Mines. Kalamazoo Division. Air Line Division. 81 Truinbull's. 14 c. Qoal Measures. 76!Jackson. 14 c. Coal Meas. Mines. 87 Parma. 14 a. Parma s.s. outcrop SSSnyder's. 13 b. Garb. Limestone. 92 Bath's Mills. 13 b. Carb. Limestone. 90 Concord. it 96 Albion. tt 99 Homer. 13 a. Marshall. 101 Marengo. 13 a. Marshall. 103 Clarendon. n 108 Marshall. " Outcrops. 109 Tekonsha. " 113Ceresco. " 117iUnion City. 11. Hur. Kid'y Iron Ore. 11 51 White's. tt 1. This chapter was prepared for this work by Prof. Alexander Winchell, L L. D., of the Syracuse University, former Director of the Geological Survey of Michigan. 2. The rocky formations of the Lower Peninsula are deeply and generally covered by drift. In all the western half of the State, south of Little Traverse Bay, no good characteristic exposures exist, save in Kent county and near Holland in Ottawa county. Hence in most cases our knowledge of the underlying rocks is only a matter of inference. A. W. 116 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MICH.) Michigan Central Railroad. Ms. | Kalamazoo Division— Continued. Michigan Central Railroad — Continued. Ms. | Saginaw Division. 121 126 130 135 140 144 149 156 160 162 168 172 179 185 191 197 202 205 209 211 218 Battle Creek. Bedford. Augusta. Galesburg. Comstock. Kalamazoo. Ostemo. Mattawan. Lawton. White Oaks. Decatur. Grlenwood. Dowagiac. Pokagon. Niles. ,13 a. Marshall,outcr u «< u 9 11. Huron. u M U (I u ne. >ne. 3. South Haven Division. 0 8 14 17 18 22 24 27 29 31 39 Kalamazoo. Alamo. Kendell's. Pine Grove. Gables. Bloomingdale. Bear Lake. Columbia. Grand Junction Geneva. South Haven. 11. Huron. £ ,1 cr ^ e l-S $ Lake Shore & Michigan Southern R. R. Michigan Division. South Bend Division. 0 Cleveland. 113 Toledo. 123 Sylvania. 130 Ottawa Lake. 133 Riga. 135!Blissfield. 9, Corniferous. u M (| 10 b. Little Traverse. 0 5 9 11 Niles. Bertrand. Notre Dame. South Bend. 9. Corniferous. u u U 3. Lacustrine deposits of Saginaw Valley 100 feet deep. 4. The shallow salt wells here are supplied from the base of the Coal Measures. MICHIGAN. 117 Lake Shore «& Michigan Southern R. R. Ms. | Michigan Division— Continued. Lake Shore 122 130 133 135 141 146 151 153 156 160 Ionia. Palmer's. Chadwick. Kiddville. Greenville. Gowen. Trufant's. Maple Valley. Coral. Howard. 14 c. Coal Mres. 1 td . o o| %* o«- •3*3; { 0 f* If is j § Chicago and Michigan Lake Shore R. R. Flint River Division. 0 4 8 14 19 142 153 155 Flint. Junction. Genesee. Otisville. Otter Lake. 14 c. Coal Measures. (i u 14 a. Parma Sandstone. 13 b. Michigan Salt. 0 7 10 15 16 20 28 30 39 42 47 54 58 62 75 79 90 Chicago. New Buffalo. Chickaming. Troy. Bridgeman. Morris. Stevensville. St. Joseph. Benton Harbor. Coloma. Watervliet. Hartford. Bangor. Breedsville. Grand Junction. Rennsville. Richmond. Eolland. 9. Cornif., Sand Dunes. ? 10 b. Little Traverse ? 11. Huron. « u 41 " [fossils. 13 a. Marshall, outcrops EastSaginaw.6 Portsmouth. Bay City. 14 c. Coal Measures. (4 |( Detroit, Lansing & Lake Michigan R. R. 0 3 13 15 16 19 23 29 34 43 46 52 57 60 65 71 76 79 85 86 92 94 97 102 106 109 114 118 122 ~0 5 9 14 19 24 Detroit. Gd. Trunk Jun. Redford. Fisher's. Elmwood. Livonia. Plymouth. Salem. South Lyon. Brighton. Genoa. Howell. Fleming. Fowlerville. Le Roy. Williamston. Meridan. Okemos. Lansing. North Lansing. Delta. Ingersoll's. Grand Ledge. Eagle. Danby. Portland. Collins. Lyons. Ionia. 10 b. Little Traverse. 11. Huron. « (1 u 13 a. Marshall. « « 13 b. Carb. Limestone. 14 a. Parma Sandstone. 14 c. Coal Measures. < i < « ' Outcrops. < i i < i Outcrops. < < i < " Quarries in upper sandstone. 90 95 104 110 115 Holland. Zeeland. Hudsonville. Grandville. Grand Rapids. 13 a. Marshall. u (( 13 a. Michigan Salt. 13 b. Carb. Limestone. 90 Holland. 99 Olive. 109;Robinson. llOJNitnicft. 116;Fruitport. 126'Muskegon. 13 a. Marshall. u u (i u II 126 130 136 142 150 160 161 170 181 Muskegon. B. R. Junction. Twin Lake. Holton. Fremont Centre Allyton. Morgan. Traverse Road. Big Rapids. 13 a. Marshall. « (i <( u 13 b. Carb. Limestone. u It 14 c. Coal Measures. 126 142 143 157 163 170 Muskegon. Whitehall. . Montague. Shelby. Mears. Pentwater. 13 a. Marshall. t< 13 b. Michigan Salt. 13 b. Carbon. 1. s., ex tensive detached tables. 13 b. Carb. Limestone. u Ionia. Stanton Junc'n. Wood's Corners Fenwick. Sheridan. Stanton. 14 c. Coal Measures. : it > * 120 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MICH.) Grand Rapids, IVewaygo and Lake Shore Ms. | Railroad. Ms. Grand Trunk Railroad. 196 207 217 223 237 250 255 258 Port Huron. Smith's Creek. Ridgeway. New Haven. Mount Clemens. Milwaukee Jun. Detroit Junct'n. Detroit. 11. Huron. *) ffi.'g " s 1. W « w Sfg 8,* * s*f « p 1 10 b. L. Trav. | | 5 Drift over 100 ' |» feet deep. J go* 0 7 14 19 21 25 27 30 36 39 46 67 Grand Rapids. Alpine. Sparta. Tyrone. Casinovia. County Line. Ashland. Grant. Newaygo. Croton. Morgan. Big Rapids. 13 b. Garb. Limestone. u (( 14 c. Coal Measures. Chicago and Lake Huron Railroad. Eastern Division. Detroit, Hillsdale and S. W. Railroad. 0 4 10 19 27 34 39 46 53 57 66 rort Huron. Gd. Trunk Jun. Thornton. Emmet. Capac. Imlay City. Attica. Lapeer. Elba. Davison. Flint. 11. Huron. u « 13 a. Marshall. tt u 13 b. Michigan Salt. 13 b. Carb. Limestone. 14 a. Parma Sandstone. 14 c. Coal Measures. o 11 17 28 36 41 44 49 53 61 65 Ypsilanti. Saline. Bridgewater. Manchester. Brooklyn. Woodstock. Somerset. Jerome. North Adams. Hillsdale. Banker's. Reading. Camden. 13 a. Marshall. t< a it u tt t i i 1 Outcrops foss. < 11. Huron. a Peninsular Division. 0 5 10 12 19 27 32 37 45 55 60 64 68 74 85 89 94 98 106 Lansing. Millett's. Sevastopol. Potterville. Charlotte. Olivet. Bellevue. Madison. Battle Creek. Climax. Scott's. Indian Lake. Vicksburg. Schoolcraft. Marcellus. Volinia. Jamestown. Cassopolis. Edwardsburg. (Continued 14 c. Coal Measures. u « u (( 14 a. Parma Sandstone. 13b. Car. l.s., quar. fos. 13 b. Michigan Salt. 13 a. Mar., outcro. foss. 13 a. Marshall. 11. Huron. u (« « «( {( 10 b. Little Traverse. 9. Corniferous. (i in Indiana.) Chicago and Canada Southern Railroad. 0 7 13 17 20 25 32 36 40 42 47 50 55 57 61 67 Fayette. Morenci. Weston. Fairfield. Ogden. Blissfield. Deerfield. Petersburg. Dundee. Nor. Rainsville. Maybee. Exeter. Carlton. Bryar Hill. Flat Rock. Slocum Junct'n. 11. Huron. « « 10 b. Little Traverse. u « (( 11 9. Corniferous. " ext. quarries. u u it u u It Toledo, Canada Southern and Detroit R. R. Soginaw Valley and St. Louis Railroad. 0 2 9 12 16 :t7 Detroit. M. C. Junction. Ecorces. Wyandotte. Trenton. Slocum Junct'n. 10 b. Little Traverse. 11. Huron. 10 b. Little Traverse. u 9. Corniferous. i< 0 2 6 9 11 12 16 16 22 26 28 35 East Saginaw.6 Saginaw. Tittabawassee J Swan Creek. Graham's. Sand Ridge. Hemlock. Porter's. West Mill. Wheeler's. Breckenridge. St. Louis. Elm Hall. 14 c. Coal Measures. 15 ~20 25 30 34 40 Stony Creek. " & 7. L. Heldb. ext. expos. & quarries. Monroe. La Salle. Vienna. Alexis. Toledo. 9. Corn. & 7 L. Heldb. 9. Corniferous. 1 &, ^ :: Ui JIT MICHIGAN. 121 Chicago & North- Western Railroad. Ms. | Green Bay and Lake Superior Line. Chicago & IVorth-Western Railroad. Ms. | Green with Native Copper ) Mines. 122 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (IXD.) Indiana. LIST OF THE GEOLOGICAL FORMATIONS FOUND IN INDIANA, 20. Quaternary.* 15. Permian ? 14 c. Upper Coal Measures. 14 b. Lower Coal Measures. 14 a. Millstone Grit. 13 b. Upper Sub-Carbonifer's. 9 c. Corniferous. 13 a. Lower Sub-Carbonifer's. 8. Oriskany. 10 c. Genesee. 5 c. Niagara. 10 b. Hamilton. 5 b. Clinton. 4 c. Cincinnati. Ms. | Michigan Central Railroad. Lake Shore and Michigan Southern R.R. Ms. Air Line Division— Continued. 0 23 29 35 44 50 56 Chicago. Gibson's. Tolleston. Lake. Porter. Furnessville. New Buffalo. (Continued (See Illinois.) 5 c. Niagara. it « u u a in Michigan.) 47 50 54 62 69 Corunna. Sedan. Waterloo. Butler. Edgerton. (Continued 5 c. Niagara. tj (i tt n in Ohio.) Baltimore and Ohio Railroad. Chicago Division. 0 7 14 45 Joliet Division. Lake. Ross. Dyer. Joliet, 111. 5 c. Niagara. M (( (See Illinois.) 0 34 50 58 72 89 106 110 118 128 138 143 146 147 163 Pi Chicago. Mich. Cen. Jun. L.N.A.&C.Jun Wellsboro. Walkerton Jun. Bremen. Milford Junc'n. Syracuse. Cromwell. Albion. Avilla. Garrett. Auburn Junc'n. Auburn. Hicksville. ttsburg, Fort Wa (See Illinois.) 5 c. Niagara. u u it It (( « «( (( u U Lake Shore and Michigan Southern K.R. Western Division. 0 14 30 41 45 49 51 59 66 73 75 80 86 90 96 101 Chicago. Colehour. Miller's. Chesterton. Burdick. Otis. Holmesville. Laporte. Rolling Prairie. New Carlisle. Terre Coupee. Warren. South Bend. Mishawaka. Osceola. Elkhart. 5 c. Niagara. yne and Chicago R.R. 0 16 20 24 31 37 44 53 59 78 84 95 99 104 109 Chicago. Sheffield. Cassello. Clarke. Liverpool. Wheeler. Valparaiso. Wanatah. Hanna. Donelson. Plymouth. Bourbon. Etna Green. Selby. Warsaw. (See Illinois.) 5 c. Niagara. u u u u U « (( ({ « (( tt Air Line Division. 0 10 18 25 30 34 41 Elkhart. Goshen. Millersburg. Ligonier. Wawaka. Brimfield. Kendallville. 5 c. Niagara. 14 11 It 11 tl « * Four-fifths of the State of Indiana is covered with drift. It is 90 feet to the rock in Indian- apolis. At some points north of Wabash Eiver the drift has been bored into 900 feet. It thins out as you go toward Ohio River, does not reach it at some points, and is sparingly found south of that stream. INDIANA. 123 Pittsburg, Fort Wayne and Chicago Rail- Ms. | road — Continued. Pittsburg, Cincinnati and St. Louis B. B. Ms. | Second Division— Continued. 115 Kosciusko. 5 c. Niagara. 193 Power's. 5 c. Niagara. 117Pieiiceton. " 197 Ridgeville. (i 122Larwill. " 200 Deerfield. it 129 Columbia. H 203 Warren. tt 140 Arcola. it 210 Union. tt 148!Fort Wayne. it (Continued in Ohio.) 158 Maples. (Continued tt in Ohio.) Columbus, Chicago & Indiana Central Division. 0| Chicago. H7iLogansport. 122 Anoka. 8. Orisk. & 10 b. Ham 10 b. Hamilton. Pittsburg, Cincinnati and St. Louis B. B, First Division. o Indianapolis. 10 c. Genesee. 127| Walton. tt 11 Cumberland. H 130 Lincoln. ti 17 Philadelphia. a 133 Galveston. it 21 Greenfield. 10. Hamilton. 139 Kokomo. tt 28 Cleveland. n 145 Tampico. tl 30 Charlottsville. u 149 Nevada. H 34 Knightstown. « 152 Windfall. it 35 Raysville. n 157 Curtisville. it 38 Ogden's. 5 c. Niagara. 161 Elwood. tt 39 Dunreith. (< 166 Frankton. it 44 Lewisville. ti 171 Florida. it 51 Dublin. it 175 Anderson. 9 c. Cornif. & 8. Orisk. 53 (Cambridge City. 58 Germantown. it ti 184 Bellefontaine Cr Middletown. ossing. 5 c. Niagara. 63 Centerville. 4 c. Cincinnati. 187 Honey Creek. 68 Richmond. 74'New Paris. « it 190 195 Sulphur Springs Junction. t < 79 Wiley's. « 197 New Castle. t (Continued in Ohio.) 201 Ashland. i Second Division. 204 Millville. i 0 20 Chicago. Dalton. 5 c. Niagara. 208 215 Hagerstown. Washington. i 27 Lansing. (i Centreville Pike 34 Shererville. i 224 Richmond. 4 c. Cincinnati. 41 47 Crown Point. Cassville. t < Indianapolis and Vincennes Division. 0 Indianapolis. 10 c. Genesee. 51 Hebron. » i 4 Maywood. «( 61 Koutt's. i 8 Valley Mill. « 67 La Crosse. 1 11 West Newton. u 77 North Judson. 1 12 Friendswood. u 91 Winimac. tt 16 Mooresville. « 97 Star City. It 18 Mathews'. u 101 Rosedale. H 20 Brooklyn. tt 105'Royal Centre. it 23 Centerton. It Ill Gebhardt. it 26 Hastings. tl 117 Logansport. 8. Oriskany & 10 b. Ham 30 Martinsville. (( 121 Anoka. 10 b. Hamilton. 33 Hynds. u 127 Onward. " 37 Paragon. 11 132 Bunker Hill. u 44 Gosport. 13 b. Upper Sub-Garb. 140 North Grove. it 53 Spencer. u 142 Amboy. u 62 Freedom. u 145 Converse. tt 65 Farmer's. 14 a. Millstone Grit. 148 157 Mier. Marion. i 40 Peotone. a 323 Cobden.5 ti 47 Manteno. a 328 Anna.6 4 a. Trenton, 20 miles. 1 1 56 Kankakee.3 II 339 Dongola. 65 Chebanse. « 344 Ullin. j 18. & 19. Cretaceous 69 Clifton. it ( or Tertiary, 21 miles. 81 Gilman. It 365 Cairo. n 85 Onarga. H Dubuque to Cairo. 93 Bulkley. 4 c. Cincinnati, 16 ms. 0 Dubuque. 4 a. Trenton, 71 miles. 99 Loda. ii 2 Dunleith.7 i 103 Paxton. M 19 Galena. 7 ( 105 Ludlow. ( 14 a. & b. L. CI. Mrs. ( & Conglom., 21 ms. 26 31 Council Hill.7 Scales Mound.8 i 114 Rantoul. u 40 Apple River. c 119 Thomasboro. « 46 Warren. u 128 Champaign. 14 c. U. Cl. Mrs. 155ms 49 Nora. « 137 Tolono. 57 Lena. (( 143 Pesotum. 70 Freeport. u 150 Tuscola. 74 Baileysville. 5 c. Niagara, 3 miles. 158 Arcola. 82 Forreston. 4 a. Trenton, 42 miles. 173 Mattoon. 87 Haldane. u 185 Neoga. 92 Polo. II 199 Effingham. 105 Dixon. 9 ii * Consisting of the 1. Kinderhook limestone and sandstone, 2. Burlington limestone, 3. Keokuk limestone, 4. St. Louis limestone and 5. Chester limestone and sandstone. 1. The notes are by Prof. A. H. Worthen, State Geologist of Illinois. 2. Kich in Niagara corals. 3. Shelly limestone of Upper Coal Measures filled with fossil shells, bryozoa, &c. 4. Roof shales of coal rich in fossil plants. 5. Tipper Chester shales beneath conglomerate with a few fossil shells, corals, &c. 6. Quarries of St. Louis limestone with some small shells, corals, &c. 7. A few fossils characteristic of the Galena limestone. 8. Rich fossiliferous band near the base of the Cincinnati group, and crystals of barite, pyrite and dolomite in pockets of the Galena limestone. 9. Lower Trenton or Blue limestone two miles northeast of Dixon full of characteristic fossils. 130 AX AMERICAN GEOLOGICAL RAILWAY GUIDE. (ILL.) Illinois Central Railroad. Chicago, Burlington and Quincy Railroad- Ms. | Dubuque to Cairo— Continued. Ms. | Continued. 117 125 Amboy. Sublette. 4 c. Cincinnati, 3 miles. 4 a. Trenton, 20 miles. 140 Galva. j 14 a. Cong, and 14 b. ( Low. Coal Measures. 133 Mendota. 148 Altona. M 141 Dimmick. « 152 Oneida. " 149 LaSalle.10 j 14 a. Conglo. & 14 b. 1 L. Coal Mres. 8 ms. 156 164 Wataga. Galesburg. u 158 T/rnino 179 Monmouth.15 " 169iWenona. ISOMinonk. 188iPanola. 14 c. U. Cl. Mrs. 196 ms 186 198 Kirkwood. Sagetown.16 ft j 13 a. Lower Carbon's ( Limestone, 15 miles. 191 El Paso. 207 Burlington. (C 200 207 Hudson. Normal. 164 Galesburg. ( 14 a. Cong, and 14 b. ] L. Coal Mrs. 54 ms. 209 Bloomington.11 173 Abingdon. u 227 Wapella. 183 Avon. M 231 Clinton. 186 Prairie City. " 240 Maroa. 192 Bushnell. \ " 253 Decatur. 203 Macomb. " 258 Wheatland. 210 Colchester.17 " 263 Macon. 212 Tennessee. It 269 Moawequa. 223 Plymouth. 13 a. L. Carb. l.s. 5ms. 276 285 Assumption. Pana. 227 Augusta. j 14 a. Cong, and 14 b. 1 L. Coal Mrs. 27 ms. 303 315 330 Ramsey.12 Vandalia. Patoka. 242 252 263 Camp Point. Fowler. Quincy.18 i< 13 a. L. Carb. l.s. 13ms 339Sandoval. 344 Central City. Galesburg and Peoria Division. 164 Galesburg. 13 a. L. Carb. Limest. 345 Centralia. 169 Knoxville. it 358 Cairo. 18. & 19. Creta. & Ter'y. 180 Maquon. u Chicago, Burlington and Quincy Railroad. 188 190 Yates City. Elmwood. si -o Chicago. 5 c. Niagara, 44 miles. 209 Kickapoo. n 30 Naperville. 1 1 217 Peoria. n 38 43 47 53 Aurora. Oswego.18 Bristol. Piano. M 4 c. Cincinnati, 11 ms. Galena Junction. 0 6 Galena Junction East Batavia. 5. Niagara. t< 57 Sandwich. 4 a. Trenton, 45 miles. 13 Aurora. " 61 Somonauk, t Fox River Line. 67 Leland. « 0 Aurora. 5. Niagara, 6 miles. 74 Earl. t 6 Oswego. i< 84 Mendota. ' 13 Yorkville. 4 c. Cincinnati, 11 ms. 100 Maiden. i 23 Millington. 4 a. Trenton, 21 miles. 105 Princeton. j 14 a. Cong.l and 14 b. \ Low. Cl. Mrs. 92 ms. 28 32 Sheridan. Serena. 13 a, Lower Coal Mres. 112 Wyanet. « 36Wedron. " [3 a. Calcif. in 118 Buda. (C 40 Dayton. " bed of river.] 124 Neponsett. " 44 Ottawa. 3 a. Calciferous, 2 ms. 132 Kewanee.14 it 60Streator. 13 a. Lower Coal Mres. 10. Limestone of the Upper Coal Measures full of fossils. 11. Minute shells in roof of coal seam, probably No 3. 12. Upper Coal Measure limestone with fossil shells near Ramsey. 13. Cincinnati group rich in fossils. 14. Fossils in roof shales of coal seam, probably coal No. 5 or 6. 15. Outcrop of Burlington limestone 2 miles north of Monmouth. 16. Burlington limestone rich in fossils. 17. Roof shales of coal rich in fossil plants, coal No. 2. 18. Burlington limestone rich in fossils. 19. Fossils abundant in roof shales of coal No. 5. 20. Fossils in roof shales of coals No. 2 and 3. 21. Fossils in roof shales of coal No. 5. ILLINOIS. 131 Chicago, Burlington «fc Quincy R. B.— Cont. Ms. Buda and Rushville Branch. Chicago, Rock Island and Pacific Rail- Ms. | road. 0 20 38 45 47 53 64 78 95 110 Buda. Wyoming. Brimfield. Elmwood. Yates City. Farmington. Canton.19 Lewiston.80 Vermont. Rushville.21 14 b. Lower Coal Mres. tt (< tt n fi si « « tt 0 16 30 40 51 61 71 76 84 94 99 100 114 Chicago. Blue Island. Mokena. Joliet. Minooka. Morris.22 Seneca. Marseilles. Ottawa. Utica. La Salle. Peru.88 Bureau. 5. Niagara, 48 miles. u « ( 14 a. Cong, and 14 b. ( L. Coal Mrs. 41 ms. it a it 3 a. Calciferous, 9 ms. n j 14 b. Low. Coal Mrs. ( and Conglomerate. el Geneva Branch. 0 Aurora. 9 Batavia. 13|Geneva. 5. Niagara. u Indianapolis, Decatur and Springfield R.R. o 20 36 42 52 68 76 Decatur. Hammond. Tuscola. Camargo. Newman. Chrisman. Illiana. 14 c. Upper Coal Mres. u (1 M (( 14 a. & b. L Coal Mrs. u Iron Mountain, Chester and Eastern R.R. Springfield Division. 0 10 20 26 31 41 Jr Tamaroa. Pinckneyville4 8 Cutler. Steel's Mills. Bremen. Chester. * » icksonville, IVort Easteri 14 a. & c. L. Coal Mrs. i< « ii 13 a. Low. Carbon. 1. s. it h-Western and South- i Railroad. 0 13 29 40 44 45 53 63 72 88 121 132 146 153 174 181 194 199 209 216 225 228 Beardstown. Virginia. Pleasant Pins52 Bradford. Coal Shaft. Springfield. Rochester. Edinburg. Taylorsville. Pana. Altamont. Edgewood. Louis. Flora. Fairfield. Baruhill. Enfield. Sacramento. Omaha. Ridgeway. St. L. &S.E. Jn Shawn eetown. 14 a. & b. L. Coal Mrs. (c u 14 c. Upper Coal Mres. « u (( (1 it ii it n K <( Ii u H U*nrf\f\ j Kettle Range. O 1 LJOi&riG* { 20. Moraine Drift. ( 10. Hamilton, Mil wau- 42 Palmyra. M 0 Milwaukee. •j kee Cement Rock. 51 Whitewater. 4 b. Galena limestone. ( 5 c. Niagara 1. s. 56 Lima. 20. Quaternary. 9 Schwartzburg. « 62 Milton. (i 15 Granville. « 64 Milton Junction a 20 Germantown. « 71 Edgerton. (4 a. Trenton. (3 c. St. Peter's s. s. 25 Richfield. 5 33(Schleising'vilIe. 50. Quaternary. " Moraine. 142 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (WIS.) Chicago, Milwaukee and St. Paul Railroad. Ms. | Western Union Railroad— Continued. Ms. Northern Division — Continued. 18:Kansasville. 20. Quaternary. ( 5 c. Niagara 1. s. 27 Burlington. 5 c. Niagara limestone. 37 Hartford. \ 5 b. Clinton iron ore. 31 Lyons. « ( 4 c. Cincinnati shale. 34 Springfield. 20. Quaternary. 41 Rubicon. 20. Quaternary. 41 Elkhorn. 46 Woodland. u 46 Delavan. ( 5 c. Niagara 1. s. 50 Darien. 47 Iron Ridge. •< 5 b. Clinton iron ore. 54 Allen's Grove. ( 4 c. Cincinnati shale. 59 Clinton 54 Horicon Junc'n. 20. Quaternary. ( 4 b. Galena 1. s. 59 Burnett Junc'n. it 69 Beloit. •j 4 a. Trenton 1. s. 68 Waupun. 4 b. Galena limestone. ( 3 c. St. Peter's s. s. 76 Brandon. 20. Quaternary. (Continued in Illinois.) f 4 b. Galena 1. s. 0 Eagle. 20. Moraine Drift. 83 Rip on. 1 4 a. Trenton 1. s. 1 3 c. St. Peter's s. s. [3 a. Lower Magn. l.s. 6 9 11 Troy Center. Mayhew's. Fayette. M 20. Quaternary. n {3 a. Lower Magn. l.s. 17:Elkhorn. cc 96 Berlin. 2 b. Potsdam s. s. 1. Arch. Porphyry. Sheboygan and Fond du Lac Railroad. 90 Picket's. 4 a. Trenton limestone. OSheboygan. 5 c. Niagara limestone. 102 Oshkosh. (4 b. Galena 1. s. (4 a. Trenton 1. s. S.SheboyganFalls 10 Town Line. tt 20. Quaternary. 90 Rush Lake. 8 a. Lower Magn. 1. s. 14 Plymouth. a 95 99 Waukau. Omro. u 20. Quaternary. 20 Glenbeulah. j Kettle Range. ( Moraine Drift. 104 Winneconne. u -26 St. Cloud. ( 5 c. Niagara 1. s. 54 57 59 63 Horicon Junc'n. Minnesota Jun. Rolling Prairie. Beaver Dam. 20. Quaternary. u j 4 b. Galena 1. s. ( 4 a Trenton 1. s. 30 43 44 47 Calvary. Fond du Lac. Fond du Lac Ju. Woodhull. ( 20. Quaternary. 5 c. Niagara limestone. 4 b. Galena limestone. it 20. Quaternary. 69 Fox Lake Jun. 4 a. Trenton limestone. 52 Eldorado. u , _ _ 55 Rosendale. (i 74 Randolph. i 4 a. Trenton 1. s. •j 3 c. St. Peter's s. s. ( 3 a. Lower Magn. l.s. f3 a. Lower Magn. l.s. 57 63 West Rosendale Ripon. ("4 b. Galena 1. s. I 4 a. Trenton 1. s. 1 3 c. St. Peter's s. s. 80 90 98 Cambria. Pardeeville. Portage City. j 2 b. Madison s. s. j 2 b. Mendota 1. s. [ 2 b. Potsdam s. s. 2 b. Potsdam sandstone. a 69 72 Green Lake. St Marif ^3 a. Lower Magn. l.s. !4 a. Trenton 1. s. 3 c. St. Peter's s. s. 3 a. Lower Magn. l.s. Madison and Portage Division. 1 •£ 78 oil. jjidiie. Princeton. o iX, -LjOWGF jjuLfiffll, !• S» 0 1 Madison. East Madison. (As before.) Green Bay and Minnesota Railroad. 12 Windsor. (3 a. Lower Magn. l.s. (2 b. Potsdam s. s. 0 Green Bay. {5 c. Niagara 1. s. 4 c. Cincinnati shale. 16 Morrison. 3 a. Lower Magn. 1. s. 4 b. Galena 1. s. ( 3 c. St. Peter's s. s. 10 Oneida. " 21 25 Arlington. Poynette. ( 3 a. Lower Magn. l.s. 2 b. Potsdam sandstone. 17 Seymour. j 4 a. Trenton 1. s. "i 3 c. St. Peter's s. s. 39 Portage. i " 23 Black Creek. 3 a. Lower Magn. 1. s. Western Union Railroad. SIShioctoa, 39 New London. 20. Quaternary, j 3 a. Lower Magn. 1. s. j 2 b. Potsdam s. s. 0 Racine. 5 c. Niag. (Racine) 1. s. 2 Junction. " 46 Royalton. 20. Quaternary. 8 W. U. Junction 20. Quaternary. 50jManawa. u 10 Windsor. u 55 Ogdensburg. 11 15 Union Grove. (C 61, Scandinavia. 11 WISCONSIN. 143 Ms. | Green Bay «fc Minnesota B. R.— Cont. Ms. I Wisconsin Central R. R.— Continued. 78 Amherst. j 20. Heavy Drift. { 2 b. Potsdam s. s. 1 Schwartzburg. 3 Thienville. 5 c. Niagara. 20. Quaternary. 82 Plover. tt 2 3 Cedarburg. 5 c. Niagara 1. s. fl. Archaean Gneis 2 5 Grafton. It 9 3 Grand Rapids. overlaid by I 2 b. Potsdam s.s. am 2 3 ? Saukville. 3 Fredonia. tt tt [ altering into Kaolin 4 Random. 20. Quaternary. lll'Dextervillc. 2 b. Potsdam sandston 4( 5 Sherman. n 119Scranton. ii 5( ) Waldo. it 142Hatfield, it 5* > Plymouth. u 149,Merrillan. tt ( 20. Quaternary. 153 Alma Center. it 6S ! Elkhart Lake. •< 20. Moraine. l59iHixton. t ( Kettle Range. 16C Taylor. i 6£ Kiel. 5 c. Niagara. 172 Blair. i 72 Holstein. 20. Quaternary. 17S Whitehall. t Bayton. it 193 Arcadia. t 7S Chilton. « 210 214 Marshland. Winona, ( 2 b. Potsdam s. s. / 3 a. Lower Magn. l.s (See Minnesota.) 86 Hilbert. ft 8fa 91 Hilbert. Forest Junction 20. Quaternary, a Milwaukee, Lake Shore and Western Holland. « Railroad. 99 Greenleaf. (i 109 113 Ledgeville. De Pere. Green Bay. 5 c. Niagara. 4 b. Galena. {5 c. Niagara 1. p. 4 c. Cincinnati shale. 4 b. Galena 1. s. 0 4 6 10 13 Milwaukee. Lake Shore Jui White Fish Bay. Dillman's. Mequon. i' 10. Hamilton, Cement Rock. 5 c. Niagara 1. s. 20. Quaternary. 10. Hamilton. 20. Quaternary. 86 92 Hilbert. Sherwood. 20. Quaternary. 5 c. Niagara 1. s. 20 25 31 Ulao, Port Washing'n Decker's. 14 5 c. Niagara. «( 102 113 ifenasha. Medina. j 4 b. Galena 1. s. "j 4 a. Trenton 1. s. 3 a. Lower Magnesian. 33 38 Belgium. Cedar Grove. 20. Quaternary. ti 115 129 )ale. >Veyauwega. ii 2 b. Potsdam. 42 46 Dostburg. Wilson. <( II 136 Waupaca. Sheridan. 1. Archaean. 20. Quaternary. 48 Weeden's. (1 150 Amherst. <( 52 58 64 Sheboygan. Mosel. ^entreville. 5 c. Niagara 1. s. 20. Quaternary. 1C 165 176 Stevens' Point. Junction City. j 2 b. Potsdam s.s. and ( 1. Archaean Gneiss. 1. Archaean. 69 Newton. M Mill Creek. « 77 84 89 91 tfanitowoc. Branch. Cato. jrrimms. 5 c. Niagara 1. s. 20. Quaternary. 5 c. Niagara. It 97 Auburndale. Marshfield. tfannville. j 1. Archaean, overlaid \ by heavy drift. H •ft 94 Jeedville. n 06 Spencer. tt 100 trillion. a 12 Jnity. tt 104 108 forest Junction )undas. 20. Quaternary. 1C 16 28 3olby. Dorchester. tt II 113 £aukauna. : b. Galena. 32 Bedford. tl 115 Little Chute. 14 44 Chelsea. it 1 120. A.ppleton. ( 4 b. Galena 1. s. ( 4 a. Trenton 1. s. 48 66 73 Westboro. SIVorcester. 3hillips. n tt it 77[Manitowoc. ' 50. Quaternary. 81 tVauboo. tt 84:Two Rivers. it 87 Afield. tt Wisconsin Central Railroad. 97 09 Butternut Creek vhippewa. it it 1(10. Hamilton, Cement 24 ^nokee.* . Hur'n, with iron ore. 01 Milwaukee. Rock. ^rhite River. 0. Quaternary. 1 ( 5 c. Niagara 1. s. 51 Ashland. " on Lake Superior. 144 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (WIS.) Ms. | Wisconsin Central Railroad— Cont. Ms. | Mineral Point Railroad. 165 Stevens' Point. (As before.) ( 4 b. Galena 1. s. 170 Plover. j 2 b. Potsdam, overlaid \ by drift. 0 Mineral Point. •1 4 a. Trenton 1. s. (3 c. St. Peter's s.s. J76 Buena Yista. u {4 b. Galena 1. s. 187 Plainfield. u 10 Calamine. 4 a. Trenton 1. s. 193 Hancock. u 3 c. St. Peter's s. s. 211 Westfield. « 20 Belmont. 4 b. Galena limestone. 220 Pachwaukee. It °8 Platteville j 4 b. Galena 1. s. 236 Portage. t( | 4 a. Trenton 1. s. North Wisconsin Railroad. OjMineral Point. (As before.) 0 24 Clayton. New Richmond 20. Drift. u OCalamme. 16 Darlington. 4 b. Galena limestone. 4 a. Trenton limestone. 39 42| North Wis. Jun Hudson. « 2 b. Potsdam s. s. 26 QQ r .. . j 4 b. Galena 1. s. brratiot. N . m , \\ 4 a. Trenton 1. s. Wn*tn/vn /Csisi Tllinsvin \ Wisconsin Valley Railroad. 0 Tomah. 2 b. Potsdam sandstone. Galena and South Wisconsin Railroad. V 10 18 29 42 46* 54 Valley Junction Norway. Beaver. Remington. Port Edwards. Centralia. Rudolph. « tt u j 2 b. Potsdam s. s. on ( 1. Archaean Gneiss, a 1. Archaean. 0 7 11 15 20 32 Galena, 111. Bell's. Gillett's. Benton. St. Rose. Platteville. 4 b. Galena limestone*. u u C( (1 (4 b. Galena 1. s. (4 a. Trenton 1. s. 60 Junction City. ii 70 Knowlton. u 76 Mosinee. u 89 Wausau. " (lumber region.) * Unconformability between Huronian and Laurentian finely shown at Penokee. NOTE.— Where several formations are given it is to be understood that they occur in the vicinity, not necessarily immediately at the station. Also, that where the drift effectually conceals the underlying formations, they are not usually given, though in almost all cases definitely known. MINNESOTA. 145 Minnesota. List of the Geological Formations found in Minnesota: FORMATIONS PER GENERAL LIST. MINNESOTA SUB-DIVISIONS. FORMATIONS PER GENERAL LIST. MINNESOTA SUB-DIVISIONS. 20. Quaternary. 18. Cretaceous. « 10. Hamilton. 9 c. Corniferous. 5 c. Niagara. 4 c. Cincinnati. 20. Quater'y or drift. 18 b. Benton. 18 a. Dakota. 10 a. Hamilton 1. s. 9 c. Corniferous. 6 c. Niagara 1. s. 4 c. Maquoketa sh. 4 a. Trenton. ii 3 a. Calciferous. |4 2 b. Potsdam. 1. Archaean. 4 b. Galena 1. s. 4 a. Trenton 1. s. 3 b. St. Peters s. s. 3 a. Low Magnesian.* 2 c. St. Croix s. s. 2 b. Potsdam s. s. 1. Archaean. *Sub-divided into 3 Shakopee 1. s., 2 Jordan s. s., and 1 St. Lawrence 1. s. Ms. | 1 Southern Minnesota R. R. Ms. | Winona 'and St. Peter's— Continued. 0 Milwaukee. 0 La Crescent. j 2 b. Potsdam. Bluffs. | 3 a. Calciferous. " 308 316 Stockton. Lewiston. 3 a. Calciferous. « 1 Gr'nd Crossing 14 319 Utica. it 32 Rushford. «< « ( 4 a. Trenton. ) in 37 Peterson. « 325 St. Charles. \ 3 b. St. Peters, j" bi'ffs. 46 Whalan. II ( 3 a. Calciferous. 51 Lanesboro. 3 a. Calciferous. 1 329 Dover. 3 b. and 4 a. 57 Isinours. « 3 334 Eyota. 4 a. Trenton. 62 Fountain. 3 b. St. Peters. 4 a. under village. 347 356 Rochester. Byron. (Same as St. Charles.) 4 b. Galena 1. s. 70 Wykoff. 4 a. Trenton. Freq'nt sink-holes. 362 368 Kasson. Dodge Centre. « 18 Cretaceous. 77 86 Spring Valley. Grand Meadow 4 b. Galena. 18 Cretac's (probably) ( heavy drift. 375 382 387 Claremont. Havana. Owatonna. ii H 4 a. Trenton. Heavy drift. 101 Brownsdale. « 396 Meriden. 18 Cretaceous. 100 RAMSAY. 18 Cretaceous. eg 402 Waseca. (C « 113 Oakland. " probably. !g 413 Janesville. U 11 122 Hayward. 428 Mankato June. U «( 128 138 Albert Lea. Alden. over Devon'n. & & <( j St. Paul and } Sioux city Jn 3 a. Calciferous. 147 Wells. heavy drift. 428 Mankato. 18 Cretaceous clays. 8 162 Delaware. it 437 St. Peters. ft 171 Winnebago. « 446 Oshawa. tt Ms. | 2 Winona &St.Peter's(C.«& IV. W.)R.R. 467 New Ulm. 2 a. Acadian. Granite, 297 Winona. j 2 b. Potsdam, and ( 3 a. Calcifr's in bluffs. 545 Marshall. Red Quatzite. 18 Cretaceous. Heavy 303 Minnesota City n drift. *Prepared expressly for this work, by Prof. N. H. Winchell, of Minneapolis, the State Geologist of Minnesota. 1 The three sub-divisions of the Lower Magnesian : 1, St. Lawrence 1. ; 2, Jordan s. s. ; and 3, Shakopee 1. s. are here seen. 2 In the immediate river bluffs, are the Jordan and Shakopee. Further back are the St. Peter's and Trenton. 3 Overlying 3 a. Calciferous, i. e., its two upper members- the 2 Jordan sandstone and the 3 Shakopee limestone, seen in the bluffs. 10 146 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MINN.) Ms. 3 St. Paul and Sioux City R. R. Chicago, Milwaukee and St. Paul — Cont. 0 St. Paul. j 3 b. St. Peter's, and ") 4 a. Trenton. Ms. 144 Owatonna. j 4 a. Trenton, on river ( banks. 6 Mendota June. it 150 Medford. 3 a. Calcif. Shakopee l.s. 11 Nicols. a 159 Faribault. ( 4 a. Trenton. 19 2? 28 34 Hamilton. Bloomington. Shakopee. Merriam. 21 Quatern. drift bluffs. « 41 3 a. Calcif s, Shakopee 1. -d • 13- 15 23 Fond du Lac. Thompson. 1. Archaean. 217 Breckenridge. (Branch Line ., §..§ DD t» J St. P. and P. R. R.) 24 46 58 S. P. Junction. Island Lake. Sicotte's. u 1. Archaean. Heavy dft. 1 1 it 0 St. Paul. j 4 a. Trenton, \ 3 a. St. Peter's s. s. 76 88 Kimberly. n .< 1 M* 25 Forest Lake. 11 450 Bismarck. « with Lig- ^ 30 Wyoming. 2. Primordial. nite near Ft. A. i C^* 42 North Branch. " Lincoln. 148 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (IOWA.) Iowa.* LIST OF THE GEOLOGICAL FORMATIONS FOUND IN IOWA : 20. Bluff Deposit, Post Tertiary. 20. Glacial Drift. 1 8 a, Lower Cretaceous. 14c. Upper Coal Measures. 14b. Low. Coal Mrs. (producing Coal.) 14 a. Millstone Grit. 1 3 b. Upper Sub-Carboniferous. 13 a. Lower Sub-Carboniferous. 10 b. Hamilton. 5 c. Niagara. 4 c. Cincinnati. 4 b. Galena Limestone. 4 a. Trenton. 3 b. St. Peter's Sandstone. 3 a. Lower Magnesian Limestone. 2 b. Potsdam. Chicago, Milwaukee and St. Paul Railroad. Prairie du Chien, and Iowa and Minnesota Ms. 1 Division ( 3 b. St. Peter's s.s. in 0 Xorth McGregor •J hills ; 2 b. Potsdam, ( 3 a. L. Magnesian. 6 Giard. 3 a. Lower Magnesian. 15 Monona. 4 a. Trenton. 19 Luana. 26 Postville. 3? Castalia. 37 Ossian. 43 Calmar. 46 Conover. 53 Ridgeway. 62 Cresco. 5 c. Niagara. 73 Lime Springs. 78 Chester. 85 Le Roy. (See Minnesota, 5.) Iowa and Dakota Division. 0 Calmar. 4 a. Trenton. 6 Fort Atkinson. <( 18 Lawler. 5 c. Niagara. 27 New Hampton. 10 b. Hamilton. 35 Chickasaw. « 38 Bassett. u 47 Charles City. 50 Flovd. 59 Rudd. 64 Nora Springs. 74 Mason City. 84 Clear Lake. 20. Glacial Drift. 95 Garner. it 105 Britt. n 115 Wesley. tt 126 Algona. it Chicago, Milwaukee & St. Paul R. R.— Con. Ms. | Mason City and Austin Division. 0 8 21 28 40 Mason City. Plymouth. Carpenter. Lyle. Austin, Minn. 10 b. Hamilton. if a it 18. Cretaceous. Illinois Central Railroad. Iowa Division. ODubuque. 10'Julien. 15Peosta. 23 Farley. 29 Dyersville. 37Earlville. 41 Delaware. 47 Manchester. 54 Masonville. 61jWinthrop. 69,Independence. 78 Jesup. 4 b. Galena limestone. u tt 5 c. Niagara. 10 b. Hamilton. 93Waterloo. 98|Jn.C.F.&M.RR 99 Cedar Falls. 109 New Hartford. HSParkersburg. 123'Aplington. 132Ackley. 143 Iowa Falls. 149!Alden. 158, Williams. 172 Webster City. 192 Fort Dodge. 210Manson. 13 a. Low. Sub-Carbon. j {& 14 b. L. Coal Mrs. 1 1 20. Glacial Drift. * Prepared by Dr. C. A. White, late State Geologist of Iowa. IOWA. 149 Illinois Central Railroad. Ms. | Iowa Division — Continued. Chicago and North- Western Railroad. Ms. | lo wa Midland Division— Continued. 218 226 23; 24£ 258 268 283 291 302 319 327 \ Pomeroy. > Fonda. Newell. jStorm Lake. Aurelia. Cherokee. Marcus. Remsen. Le Mars. James'. 'Sioux City. 20. Glacial Drift. 4 | 4 i it 20. Bluff Deposit. 18 a. Lower Cretaceous 51 5^ 64 71 Monmouth. Onslow. Amber. Anamosa. 5 c. Niagara. (4 44 Omaha and California Division. 0 138 143 147 152 157 163 169 173 178 185 190 195 202 203 210 219 227 234 244 249 254 260 270 277 280 283 288 296 303 310 317 326 330 335 340 346 352 357 363 370 379 388 396 406 408 415 424 433 441 450 458 467 482 488 Chicago. Clinton. Camanche. Low Moor. Malone. De Witt. Grand Mound. Calamus. Wheatland. London. Clarence. Stanwood. Mechanicsville. Lisbon. Mount Vernon Bertram. Cedar Rapids. Fairfax. Norway. Blairstown. Luzerne. Belle Plaine. Chelsea. Tarna. Montour. Le Grand. Quarry. Marshall. Lamoille. State Centre. Colo. Nevada. Ames. Ontario. Midway. Boone. Moingona. Ogden. Beaver. Grand Junction. New Jefferson. Scranton. Glidden. Carroll. Arcadia. West Side. Vail. Denison. Dowville. Dunlap. Woodbine. Logan. Mo. Valley Jun. Crescent. Council Bluffs. j (As before.) 5 c. Niagara. u t I i 10 b. Hamilton. (4 11 If It it it 11 13 a. Low. Sub-Carbon. 14 M U U « 14 b. Lower Coal Mres. 4 I i I t ll n 41 44 44 0. Glacial Drift. u u u It 4 c. Upper Coal Mres. u [ and 20. Bluff Deposit. u Cedar Falls and Minnesota Branch. 0 12 18 27 35 46 52 63 67 72 80 Waterloo. Janesville. Waverly. Plainfield. Nashua. Charles City. Floyd. Osage. West Mitchell. St. Ansgar. Mona. 10 b. Hamilton. u It u u u (C « Dubuque and South- Western Railroad. OFarley. 7jWorthington. 14 Sand Spring. 20 Monticello. 24 Langworthy. 31 Anamosa. 38 Viola. 42 Springville. SOMarion. 56 Cedar Rapids. 5 c. Niagara. 10 b. Hamilton. u Western Union Railroad. Sabula, Ackley and Dakota Division. 0 6 15 20 28 £ 52 62 74 79 87 Sabula. Elk River. Miles. Preston. Riggs. Delmar Junc'n. Elwood. Oxford Junct'n. Olin. Martelle. Paralta. 5 c. Niagara. u u u u 10 b. Hamilton. Chicago and North- Western Railroad. Iowa Midland Division. 0 3 10 17 25 33 38 44 47 Clinton. Lyons. Almont. Bryant. Charlotte. Delmar Junct'n. Maquoketa. Nashville. Baldwin. 5 c. Niagara. 150 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (IOWA.) Ms. Chicago, Rock Island and Pacific R. R. Chicago, Rock Island & Pacific Railroad. 0 Chicago. (As before.) Ms. Indianola and Somerset Branch— Con. 183 Davenport. j 14 c. Upp. Coal Mrs. ( and 20. Bluff Deposit. 15[Somerset June. 18 Somerset. 14 b. Lower Coal Mres. 195 i nn Walcott. TTnl-f r\*n tt i ( 2 1| Indianola. tt iyy 208 211 216 221 227 237 r uiion. Wilton. Moscow. Atalissa. West Liberty. Downey. Iowa City. tt tt tt it tt tt 15|Somerset June. 21 Spring Hill. 25|Lathrop. 30Bevington. 34lPatterson. 42 Winterset. it tt 14 c. Upper Coal Mres. tt tt it 252 Oxford. it Oskaloosa Branch. 257 Homestead. it 267 277 Marengo. Victor. it tt 01 Washington. 15Keota. 13 b. Upper Sub-Carb. tt 287 293 Brooklyn. Malcolm. j 14 a., (equivalent to ( Millstone Grit). tt 20 28 Harper. Sigourney. tt j ( & 14 b. L. Coal Mrs. 302 Grinnell. n 36 Delta. 13 b. Upper Sub-Carb. 313 Kellogg. tt 43 Rose Hill. 14 b. Lower Coal Mres. 322 Newton. 14 b. Lower Coal Mres. 52 Oskaloosa. " 334 Colfax. tt 340 Mitchellsville. ^ Chicago, Burlington and Quincy Railroad. 357 Des Moines. «* Iowa Division. 372 379 392 OQ^7 Booneville. De Soto. Dexter. Stuart. 14 c. Upper Coal Mres. tt tt 0 9 13 Burlington. Middletown. Danville. 13 a. Lower Sub-Carb. 13 b. Upper Sub-Carb. tt Ou t 403 408 41 n Guthrie. Casey. tt n tt 19 28 35 New London. Mount Pleasant. Rome. tt it " and 13 a. TC J. 0 499 Anita. n 42 Glendale. 14 b. Lower Coal Mres. *±££ 436 Ann Atlantic. .A/vocfi it it 50 55 Fairfield. Whitfield. " rtOO 463 474 Shelby. Neola. it tt f it 62 69 75 Batavia. Agency. Ottumwa. a (t « and 13 b. 490 Council Bluffs. t and 20. Bluff Deposit. 83 91 Chillicothe. Frederic. C " South-Western Division. v± 100 Albia. | 208 Wilton. 10 b. Hamilton. 108 Tyrone. 220 Muscatine. it 114 Melrose. 233 240 242 Ononwa. Fredonia. Columbus June. 13 a. Lower Sub-Carb. 122 130 146 Russell. Chariton. Woodburn. 14 c. Upper Coal Mres. t 252 Ainsworth. « 156 Osceola. . \ , -' 258 271 286 Washington. Brighton. Fairfield. 13 b. Upper Sub-Carb. 14 b. Lower Coal Mres. 166 180 190 Murray. Afton. Creston. t t 292 304 Libertyville. Eldon. 195 211 Cromwell. Corning. i 317 333 Belknap. Unionville. a n 215 225 Brooks'. Villisca. t t 345 360 Centreville. Seymour. (Continued It It in Missouri.) 233 241 255 261 Stanton. Red Oak. Hastings. Malvern. " and 18 a. j 20. Bluff Deposit, ( (Post Tertiary.) Indianola and Winterset Branch. OI)es Momes. 14 b. Lower Coal Mres. 271 Glenwood. 14 c. Upper Coal Mres. 8 Avon. « 275 Pacific Junct'n. 20. Quaternary. lOiCarlisle. tt 279 E. Plattsmouth. u IOWA. 151 Ch Ms. 130 141 147 154 icago, Burlington & Quincy R. R.— Con. \ Branch. Ms. Dakota Southern Railroad. 0 8 13 14 21 30 34 44 50 55 61 Sioux City. McCook. Jefferson. Davis Junction. Elk Point. Burbank. Vermillion. Meckling. Gayville. James River. Yankton. 18 a. Lower Cretaceous. (i 18 b. Middle Cretace's. < i i i ( « it (C Chariton. Derby. Humiston. Garden Grove. Leon. 14 c. Upper Coal Mres. u II (I Branch. 190jCreston. 207 Lenox. 225 Bedford. 234 Hopkins. 14 c. Upper Coal Mres. u (I (( 14|Davis Junction. !9Joy. 24Westfield. 29[Portlandville. ii (1 02* 192 195 Dewitt. Miami. [quarry. ' white s. s. 40 51 Memphis. Downing. i°| 202 209 Wakenda. Carrollton. 20. Quaternary. 14 b. Middle Coal Mrs. bl 64 Lancaster. Glenwood. ill 9,1°) Norborne. 20. Quaternary. 70 Hamilton. " o 228 Hardin. it Qulncy, Missouri and Pacific Railroad. 234 239 245 254 265 273 275 Lexington Jun. Camden. Orrick. Missouri City. N. Missouri Jun Harlem. Kansas City.8 14 b. Coal, middle ser. 20. Quaternary. 14 c. base of U. 01. Ms. 20. Quaternary. 14 c. Upper Coal Mres. 2 11 22 32 47 54 70 West Quincy. Maywood. Tolona. La Belle. Edina. Hurdland. KTirksvillp 20. Quaternary. 13 a. Sub-Carbonifer's. 13d. Overlaid by drift. Deep drift. 1 4 a. Lower Coal Mres Northern Division, Missouri Pacific Railroad. 4 i ( 13 d St Louis 1 s & 146 Moberly. 14 a. Lower Coal Mres. 0 St. Louis. "1 14 a. Coal Measures. 153 162 169 180 189 196 203 211 218 227 234 Uairo. Emerson. Macon. Atlanta. La Plata. Millard. Kirksville. Sublett's. Queen City. Glenwood. Coatesville. 14 a. and b. 14 a. 7 13 19 26 30 37 41 52 54 67 75 Benton. Kirkwood. Meramec. Glencoe. Eureka. Pacific. Gray's Summit. South Point. Washington. Miller's Landing Benrer 13 d. St. Louis 1. s. <( 13 b. Sub-Carbonifer's. 4 a. Trenton. 3 a. Calcif. & 4 a. Tren. 1st sandstone. 2d Magn. 1. s. St. Joseph Division. 81 Hermann. u . . 88 Gasconade. o 0 Lexington Jun. 14 b. Middle Coal Mrs. 92 Morrison. 9 Swanwick. 14 c. Base of upp. coal. 100 Chamois. 19 Vibbard. 14 c. Upper Coal Mrs. 105 St. Aubert. 25 Lawson. it 125 Jefferson City. M 36 Lathrop. " 140 Centretown. lead, 2d sandstone. 44 Plattsburg. " 150 California. 2d Magnes'n. 63 Gower. « On hills some- 62 73 Agency Ford. St. Joseph. (C 162 175 Tipton. Otterville. lead, times find 13 b. Bur'n 1 s. & 3 a. 3. Loess is well developed at Kansas City. 4. On Missouri Pacific E. R., from St. Louis west, we pass St. Louis group, Lower Coal Meas- ures, St. Louis group Warsaw limestone, Burlington and Chouteau group to the Trenton, but no Devonian. At Hermann we have 2d Magnesian limestone capped in hills back with 1st or Saccha- roidal sandstone, and at Jefferson we have 2d Magnesian limestone rising in a few miles south exposing in succession 2d sandstone and 3d Magnesian limestone. West of Tipton the same lime- stone (2d) is capped by Burlington limestone. The latter west of Sedalia having reposing on it the sandstone at top of Sub-Carboniferous (Millstone Grit?) and underlaid by Chouteau group. Then the Coal Measures appear. 156 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MO.) Ms. 188 195 200 208 218 230 237 248 259 272 282 | Missouri Pacific Railroad— Continued. Missouri, Kansas and Texas Railroad— Ms. | Continued. Sedalia. Dresden. Lamonte. Knobnoster. Warrensburg. Holden. Kingsville. Pleasant Hill. Lee's Summit. Independence. Kansas City. 13 a. & b. Burlington l.s. "& 13 a. &14 a. 14 a. Lower Coal Mres. " iron ore & coal ms. " fine s. s. quarries. 14 b. Coal Measures. 14 b. & c. U. Coal Mres. u 1C It 88 95 99 108 122 131 143 155 164 172 183 196 202 210 215 226 233 Burton. Fayette. Talbott. Boonville. Harris. Clifton. Sedalia. Green Ridge. Windsor. Calhoun. Clinton. Montrose. Appleton City. Rockville. Schell City. Walker. Nevada. (Continued 14 b. Coal Measures. tt ti "&13. cU.S-C. 13 b. Upper Sub-Carb. ] 3 a. Sub-Carbonifer's. d 13 b. Upper Sub-Carb. 14 a. Coal Mrs. 4 ft. coal, iron ore. j ' coalmines, fos- "j sil ferns, &c. ( U " 4 ft. cl. u ft in Kansas.) Booneville Branch. OlTipton. 14 Palestine. 25lBooneville. 13 b. resting on 3 a. 13 a. Kinderhook. 13 c. & 14 a. Coal Mrs. Lexington Branch. 0 4 22 38 55 Sedalia. Georgetown. Brownsville. Aullville. Lexington. 13 a. Sub-Carbonifer's. "13a.,b. &c. S-C. 13 b. Upper Sub-Carb. 14 b. Coal Measures. " coal mines. Osage Division. Chicago, Rock Island and Pacific Railroad. South- Western Division. 0 8 16 22 Holden. Benton. East Lynn. Harrisonville. 14 b. Middle Coal Mres, « 14 b. Coal Measures. 14 c. Upper Coal Mres. 0 5 11 21 29 36 47 65 65 76 86 102 127 143 156 169 Leavenworth. Beverly. Platte City; Atchison June. Grayson. Plattsburg. Perrin. Cameron. Winston. Gallatin. Jamesport. Trenton. Princeton. Lineville. Allerton. Seymour. (Continued 14 c. Upper Coal Mres. « n « it u « (i « Base of " a it it " Middle " series in " valleys, in Iowa.) Chicago and Alton Railroad. Chicago, Kansas City and Denver Line. 275 282 286 293 302 311 320 325 Louisiana. Watson. Bowling Green. Curryville. Vandalia. Laddonia. Littleby. Mexico. 13 a. &b. &10c. & 4c. " Cinn. j ( good stone for buildg. 13 c. Sub-Carbonifer's. u 14 a. Middle Coal Mres. «< it Chicago and Jefferson Division. 0 325 334 337 345 350 357 364 370 376 Chicago. Mexico. Bryans. Auxvasse. Call aw ay. Fulton. Carrington. New Bloomfield Hibernia. Jefferson City. 14 a. Middle Coal Mres. tt u <( 14 a., .3 b. and 10 c. « « 10 c. and 3 a. 3 a. Calciferous. Missouri, Kansas and Texas Railroad. 0 12 22 34 44 57 70 80 Hannibal. Rensalier. Monroe. Stoutsville. Paris.5 Madison. Moberly. Higbee. 13 a. & b. Sub-Carbon's. 14 a. Lower Coal Mres. 13 b. Sub-Carbonifer's. u 13 c. & d. and 14 a. it 4 ft. coal. 5. Archimedes in limestone. 6. On St. Louis & San Francisco R. R., going southwest, after leaving Pacific (or Franklin) the 2d Magnesian limestone gradually rises, showing some 2d sandstone, and through Crawford, Phelps and Pulaski counties the latter is the highest rock, resting ou 3d magnesian limestone, the latter well exposed along the Gasconade River. Crossing it, we are upon the highest lands in Missouri. Descending towards Springfield, we find the Lower members of the Sub-Carboniferous limestone resting on the 2d Magnesian limestone or Calciferous. In southern parts of Lawrence county we find a coarse ferruginous sandstone, probably equivalent to Millstone Grit, but more probably a member of the Chester group, resting on Lower Carboniferous limestone. Throughout Newton and Jasper, the Sub-Carboniferous limestone, with much chert is of great development, and is galeniferous. The celebrated lead mines of Joplin and Granby occur in this. MISSOURI. 157 St. Louis and San Francisco, or Atlantic and St. Louis, Iron Mountain and Southern Ms. Pacific Railroad. 6 Ms. Railroad — Continued. OjSt. Louis. 20. & 1 3 d. St. L. 1. s. 51 Blackwell. 3 a. Calciferous. 37 Pacific. 4 a. Tren. & 3 a. Calcif. 57 Cadet. ' lead mine. 44 Calvey. 3 a. Calciferous. 61 MineralPoint. * many lead ms. Moselle. M i— • 65 Potosi. ' " 56 56 66 St. Glair. Stanton. IjFo 66 hf\ Hopewell. ' " 78 f\t Bourbon. n i- to o^ co 2 gp P i yj 75 Bismarck. 91 104 114 124 Luba. St. James. Rolla. Ozark. stil ir°n- ° *cJ £2. 83 87 95 Loughborough. De Lassus. Knob Lick. 2 b. Potsd. & 1 b. Hur. " [quarry. " & granite ( " lead, nickel, 138 144 150 163 171 178 1CK Dixon. Hancock. Crocker. Richland. Stoutland. Sleeper. 3 tr iron, gf 102 105 112 118 Mine la Motte. Fredericktown. Cornwall. Marquand. •< cobalt, manganese, ( copper and iron. 2 b. Potsd. & 1 b. Hur. j 2b.,lb. &3 a. Calc. ( Iron and granite. 3 a. Calciferous, iron. -L OO 1^6 Demon, / 125Bessville. " 217 241 266 278 291 306 Marshfield. Springfield. Logan's. Verona. Peirce City. Granby City. •j 1498 feet above sea ; ( highest point in Mo. 13 b. Sub-Carbonifer's. " and c. « 1C ( 13 c. Keokuk 1. s. • (Loud abounds ") 134 148 158 162 174 178 195 Lutesville. Allenville. Sylvania. Morley. Diehlstadi. Charleston. Belmont. ( 20. Quaternary, with ( probably 19. Tertiary. it (i 11 314 Neosho. 13 c. Keokuk 1. s. 325 O Q A Dayton. Arkansas Division. ooU 364 Seneca. ' (State Line.) Vinita. 850 feet above tide. (See Kansas.) 76 81 Bismarck. Iron Mountain. 9 3 a. Calciferous. (2 b. Pots. & 1 b. Hur. •< Specular iron ore in St. Louis, Iron Mountain <& Southern R. R. 5 (vast quantities. 0 St. Louis. 13 d. St. Louis 1. s. 86 Pilot Knob.10 " 10 Jefferson Bar'ks 13 d. Warsaw 1. s. 88 Ironton. * 1 2 b. Potsd. & 1 b. Hur. 13 Cliff Cave. 13 c. Keokuk 1. s. 89 Arcadia. 0* 21 Kimmswick. 13 b. Burlington 1. s. 96 Hogan. fll 24 27 Sulphur Springs Pevely. 4 a. Trenton. 104 108 Ozark. Annapolis. |*^f 29 Horine.8 j 3 a. Calcif., sandy lead ( mine 6 miles north. 116 127 Des Arc. Piedmont. *§^| 35 Hematite. 3 a. Calciferous. 134 Mill Spring. 3 a. Calciferous. 39 Victoria. u 145 Williamsville. ' C " Valli lead 148Blums. ' 43 De Soto. J mines 10 miles south, j Frumet lead mines. 166 186 Poplar Bluff. Moark. 1 & 20. Quat. [lO miles north. (Continued in Arkansas.) 6. Down the St. Louis & Iron Mountain R. R. we have St. Louis limestone, then Warsaw limestone, Keokuk limestone and Burlington limestone within 20 miles. Crossing the Merrimac River, we find the last for a while, then the Receptaculite, Trenton and Black River limestone, 1st Magnesian limestone, and at Horine Station the Saccharoidal sandstone, very soft, used for glass- making, and is very white and pure. Afterwards we have 2d Magnesian limestone. Crossing Big River, the 3d Maguesian limestone near Iron Mountain. De Lassus, Mine la Motte, Frederick- town, Pilot Knob, Des Arc and Annapolis are porphyry hills of Huroniau age, and the adjacent limestones and lower sandstones and conglomerates are probably Potsdam. At Mine la Motte and Fredericktown are certainly Potsdam fossils, but the absolute line (if any) has not been determined between the Potsdam and Calciferous beds. Near Iron Mountain, Knob Lick and Cornwall are superior granite quarries, which may be of age of Laurentian. 7. Polishing stone. 158 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MO.) St. Louis, Iron Mountain and Southern Railroad— Continued. Ms. | Cairo Division. Kansas City, St. Joseph and Council Bluffs Railroad. Ms. | Chicago Branch— Continued. ( 1C 1| 28 74 ) Cairo. > Hough's. Charleston. Sikeston. (Poplar Bluff. {Low lands. 20. Quat. and probably 19. Tertiary. « tt it 101 108 115 123 131 Barnard. Bridgewater. Maryville. Pickering. Hopkins. 14 c. Upper Carbonifer. u u u Burlington and South-Western Railroad. St. Louis, Lawrence and Western R. R. 0 7 20 32 37 45 53 181 Laclede. Linneus.18 Browning. Milan. Boynton. Pollock. Unionville. ' Burlington. (Continued 14 b. Middle Coal Mres. <{ « 14 c. Upper Carbonifer. 14b. Middle Coal Mres. it 14 a. Lower Coal Mres. in Iowa.) 0 12 17 25 Pleasant Hill. Raymore. Belton. Stanley. 14 c. Upper Coal Mres. u u (See Kansas.) Kansas City, St. Joseph and Council Bluffs Railroad. 0 10 17 25 34 54 55 66 70 80 99 109 116 122 135 149 200 Kansas City. Parkville. Waldron. E. Leaven worth Weston. Winthrop. Rushville. Lake Station. St. Joseph. Amazonia. Forest City. Bigelow. Craig. Corning. Phelps. Hamburg. Council Bluffs. (Continued j 14 Upper Carbonifer. I Good fossil mollusca. 14 c. Upper Carbonifer. tt n it it it 20. Quaternary. 14 c. Upper Carbonifer. " fusulina abounds " "& mollusca. 20. Quaternary. " over 14 c. 14 <( "&14c.U.C. in Iowa.) St. Louis, Keokuk & North- Western R. R. 0 3 11 22 28 40 54 60 66 75 85 Keokuk. Alexandria. Gregory. Canton. La Grange. Quincy. Helton. Hannibal. Saverton.14 Ashburn. Louisiana. 13 c. Keokuk 1. s.. 14 tt tl 20. Quaternary. 13 b. & c. Keokuk 1. s. (< 13 b. Sub-Carbonifer's. 13 a. &b. " & 4 c. Cinn. 4 c. Cincinnati. 4 c., 10 c. and 13 a. "1 & b. Sulphur Springs. St. Louis, Salem «fc Little Rock Railroad. 0 9 16 24 35 40 41 46 Cuba. Steelville. Keysville. Cook's. Howe's. Salem. Iron Hill. Orchard Bank. 3 a. Calciferoua.1 £ I * § J PB Chicago Branch.. 70 79 85 91 St. Joseph. Amazonia.18 Savannah. Rosendale. 1 4 c. Upper Carbonifer. « (i u 8. Four miles southeast is Crystal City on the Mississippi River, where glass is made. The Saccharoidal or St. Peter's sandstone is here forty or fifty feet thick, and over one hundred feet thick in Warren County. It is very valuable for glass-making. 9. Iron Mountain is 228 feet high, and its base covers 500 acres. 10. Pilot Knob is a conical hill, nearly circular, 581 feet high, with a north and south diameter of about one mile at its base, which covers 360 acres. 11. Sheppard Mountain magnetic iron ore. 12. Red shales and fusulina. 13. Iron ores and paint clays. 14. Salt sulphur spring. KANSAS. 159 Kansas." The only geological formations found in Kansas are: 18. Cretaceous, c. Niobrara group, b. Fort Hays group, <( a. Dakota group. 15. Permian. 14 c. Upper Carboniferous. 14 b. Coal Measures. Ms. C 6 13 14 18 42 50 60 77 112 127 136 138 141 152 226 268 1 St. Joseph and Denver City. Ms. 4 Atchison, Topeka and Santa Fe. [St. Joseph. Elwood. Wathena. Troy. A. & N. R. J'n. Norway. Hiawatha. Hamlin. Sabetha. Seneca. Marysville. Hanover. Hollenbury. State Line. Steele City,Neb Fairbury, " Hastings. Kearney June. 14 c. Upper Carbonifer's u u « ( u ( t( < a t u t It (( u tl U (( U (( 18. Cretaceous. u u (See Nebraska.) u u 1 28 40 50 62 66 Kansas City. De Soto. Lawrence. Lecompton. Tecumseh. Topeka. 14 c. Upper Carbonifer's it it it it <« « 3j P O S-* 5T g>M- n i Utah Southern Railroad. 0 17 31 48 66 75 Salt Lake City. Junction. Lehi, Provo. Payson. Terminus. 20. Quaternary. it a u tt tt Eureka and Palisade Railroad. 0 12 28 37 50 63 78 90 Palisade. Evans. Box Springs. Mineral. Alpha. Summit. Diamond. Eureka. 20. Quaternary. u (( tt tt Utah Northern Railroad. 0 14 22 32 43 53 60 80 Ogden. Willard. Brigham. Honeyville. Hampton's. Mendon. Logan. Franklin. 20. Quaternary. 19 c. Humbo't Pliocene. u Virginia and Truckee Railroad. 0 11 21 30 39 51 Reno. Steamboat. Franktown. Carson. Eureka. Virginia.29 Carson City. 20. Quaternary. tt it u it Propylite. 20. Quaternary. 19. From Wells there is a fine view of the East Humboldt Eangc. Mount Bonpiand attains an elevation of 11,321 feet above sea-level. 20. Just east of Osino the railroad passes through Osino Canon, exposing a good section in the Weber Quartzite. 21. In the neighborhood of Elko may be seen the Green River Eocene, Humboldt Pliocene, characteristic outbursts of rhyolite and the " Chicken Soup" hot springs. 22. In Moleen Canon the Carboniferous formations are well shown. 23. Palisade Canon cuts through rhy elites ; there are also exposed andesites and trachytes. 24. Mill Cit^r is the most convenient place to leave the railroad in order to study the character- istic Triassic formations of the West Humboldt Range. 25. From Humboldt there is a fine view of the West Humboldt Range. In the neighborhood are some interesting outbursts of basalt and a deposit of sulphur. 26. In the Montezuma Range, west of Brown's station, the volcanic rocks are well shown. It is an interesting place to study rhyolites and basalts. 27. The Hot Springs, a short distance east of the station, reach the surface near the base of basaltic hills. 28. The Truckee Canon, just east of Wadsworth, offers remarkable outbursts of a great variety of volcanic rocks. There may be seen here basalts, rhyolites, trachytes, andesites and propylites. 29. Propylite is the characteristic volcanic rock, which carries the Comstock Lode. A. H. 30. The last rail completing the Pacific railroads, from Omaha to San Francisco, was laid May 10th, 1869. See notes on page 165. CALIFORNIA. 169 California. Ms. | Central Pacific Railroad. Ms. | Central Pacific Railroad— Continued. State Line. 20. Quaternary. 865 Lorenzo. 120. Quaternary. 616 Boca. " 867 San Leandro. tl 624 Truckee. tt 871 Melrose. tt 638 Summit. a 876 Brooklyn. ( 20. Quat'ry and 19 c. 644 Cascade. - 1 tt 879 Oakland. | Tertiary, Pliocene. 648iTamarack. 651 Cisco. tt tt 883 San Francisco. j 18. Lignitic & Metam- ( orphic Cretaceous. 660 Emigr't Gap. * ' 668 £* hK Blue Canon. A I*,™ ' San Jose Branch. 677 679 689 701 707 712 Dutch Flat. Gold Run. f Colfax. Clipper Gap. Auburn. J Newcastle. } -•-i. u c 0 4 7 12 16 18 San Francisco.7 Oakland. Brooklyn.8 Melrose. San Leandro. Lorenzo. 18 Lign. & Metam. Cret. 20. Quaternary. 20. Quaternary & 19 c. Tertiary Pliocene. 718 rmo. )• a C\H 721 Rocklin. ) 1 & 1 Decoto. 725 728 736 Junction. Antelope. Arcade. S-iprnmpTitn f 19 c. Pliocene & 20. -< Quaternary above ( Granite (Archaean ?) 20. Quater y, Alluvial. 30 34 37 42 48 Niles. Washington. 9 Warm Springs. Milpetas. San Jose. 748 Brighton. 4 Yisalia Division. 753 Florin. 769 Elk Grove. 0 Lathrop. 20. Quaternary. 770 Gait. 6 Morrano. 779 Lodi. J f " 10 Stanislaus. 791 Stockton.5 807Lathrop. 808 Bantas. 20. Quaternary. u ri9. Terti'y, Pliocene, 20 33 50 Modesto. Turlock. Atwater. 813 Ellis. I 19 b. Miocene and 57 Merced. 819 Midway. 1 Lignitic, 19 a. Eo- 67 Plainsburg. - 1 0 827 Altamont. (^ cene ? 83 Berenda. 835 841 Livermore. Pleasanton. 20. Quatern'y, Alluvial. n 94 102 Borden. Sycamore. 853 Niles. ) 20. Quaternary.. 112 Fresno. 856 Decoto. V c ft 122 Fowler. 862 Haywards. ) " 146 Goshen. * By Dr. J. G. Cooper, late Assistant State Geologist. 1. Volcanic and glacial, with 1. Archaean (granite) and metamorphosed rocks of uncertain age. Metalliferous but not rich. Mt. Stanford, northward, Is 9,500 feet high. 2. Glacial,and detrital ahove 16. Triassic and 17. Jurassic sandstones, containing most of the gold mined on the western slopes. 3. Detrital above 1. Archaean (granite). Surface mining. 4. The mountains to the east produce lime, marble, copper ore and some lignite (19 c. Pliocene). 5. Mt. Diablo, 3,876 feet high, is in full view and easily ascended from near the coal mines. 6. Follows the 20. Quaternary (alluvial) nearly after passing through Alameda Canon 10 miles, traversing 19. Tertiary, 19 c. Pliocene and 19 b. Miocene, then lignitic, with little coal. 7. The islands visible are all like S. F. in geological structure. 8. Eedwood Peak, 1,635 feet high, is the highest in the range opposite S. F. Mission Peak, 34 miles southeast, is 2.566 feet high. 9. Mountains on the east side rise to 4,443 feet and on the west side to 3,780 feet in height. 10. The " High Sierra," 14,000 to 15,000 feet, can be seen on clear days. The mountains east- ward have the same general character as on the line from Boca to Sacramento, with the addition of some 18. Cretaceous uplifts near base. 170 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (CAL.) Southern Pacific Railroad. Ms. | Tulare Division. California Pacific Railroad— Continued. Ms. Napa Branch. 146 157 167 179 187 199 207 220 242 Goshen. Tulare. Tipton. Alila. Delano. Posa. Lerdo. Sumner. Caliente. >-n 20. Quaternary. (( (i « - 12 20. Quaternary. t< 11 19. Tertiary, Pliocene, ( with workable lign'e. 20. Quaternary. ti « i K it (i u i< " Volcanic. Marysville Branch. 0 71 81 85 90 San Francisco. Davis. Woodland. Curtis. Knight's Land'j_ (As before.) 20. Quaternary. tii (i ii Stockton <& V isaliii and Stockton <& Copper- opolis Railroads. 19 01 Stockton. 6 Charleston. HHolden. 15 Peter's. 20. Quaternary. ii M II Alameda Branch. San Francisco. Oakland Wharf. Oakland. Alameda Stat'n. Fruit Yale. Fernside. j 18 c. Lign. & Metam- ( orphic Cretaceous. 20. Quaternary. ii ii ( 20. Quatern'y and ( 19 c. Tertiary Plioc. it 15[Peter's. ) 22Waverly. V so 80] Milton. ) 20. Quaternary. ii ii 15 20 28 34 Peter's. Farmington. Clyde. Oakdale. 20. Quaternary. ti « (i California Pacific Railroad. 0 25 31 San Francisco. Vallejo.14 Napa Junction. j 18 c. Lign. & Metam. / Cretaceous, j 20. Quaternary & 18. I Cretaceous, u Southern Pacific Railroad of California. 0 6 ban Francisco. |{18^ce^- San Miguel. 1 " 11. The mountains westward are like those from Pleasanton to Niles, with more 19. Tertiary, 19 b. Miocene and 18. Cretaceous. Also 20. Quaternary, volcanic and granite in places. The only coal now worked is north of Mt. Diablo and south of Livermore. The granite, of the coast ranges at least, is eruptive, and belongs rather to the Quaternary than the Archaean. 12. The mountains eastward resemble those farther to the south, but with more 18. Cretaceous, some 13. Sub Carboniferous near the middle, and a vast 20. Quaternary volcanic field northward. 13. Mt. Shasta, 14,400 feet high, is in view. 14. The fossil forest is on this route. 15. The hills on both sides are metamorphic (18. Cretaceous?), with volcanic outbursts increas- ing toward the northeast, and with quicksilver deposits. 16. St. Helena Mountain is 4,343 feet high. 17. Tunnel through 18. Cretaceous and 19. Tertiary hills. 18. The coast range westward, 5.000 to 8,000 feet high, is little explored, but resembles that south of San Francisco Bay. with much more volcanic, and towards the north auriferous, but only granitic or metamorphic rocks, containing the gold quartz, underlie the cretaceous, as far as now known. 19. The most northern group of " Big Trees" is approached by this route. 20. Passing into 19. Tertiary, 19 c. Pliocene and 1. Archaean (granite) below it. CALIFORNIA. 171 Southern Pacific Railroad of California- Ms. | Continued. Southern Pacific Railroad of California. Ms. Los Angeles Division — Continued. 12 17 21 25 28 33 38 44 50 63 73 80 83 86 96 99 110 118 128 134 143 Baden.31 Millbrae.23 San Mateo. Belmont. Redwood City83 Menlo Park. Mountain View. Lawrence's. San Jose. Coyote. Tennant.85 Gilroy.86 Carnadero. Sargent's. Vega.87 Pajaro. Castroville.88 Salinas. Chualar. Gonzales. Soledad. 2U. Quaternary. < < i i 24 ' ( ( ( 1 | ( 1 I < 1 | | ( ( 0 5 10 15 20 Los Angeles. Florence. Compton. Cerritos. Wilmington. 3 8 20. Quaternary. 0 9 13 29 42 57 61 72 80 93 101 104 130 Los Angel's" San Gabriel Monte. Spadra. Cucamon'a. Colton. Mound City El Casco. San Gorgoni Jacinto. Whitewater. Seven Palms Indian Wells -33 a84 . 3. 20. Quaternary. tt « (i San Francisco & Northern Pacific R. R. 80 94 100 Gilroy.29 Hollister. TresPinos.30 20. Quaternary. n (i 0 34 42 49 57 61 70 82 90 San Francisco. Donahue. Petaluma. } Page's. >• 3 s Santa Rosa. ) Fulton. Grant's. Geyserville. Cloverdale. j 18 c. Lign. & Metam. ( Cretaceous. 20. Quater'y, Volcanic. Los Ange OiLos Angeles.31 22jSan Fernando. les Division. 20. Quaternary, it 0 6 13 17 23 27 Los Angeles. Florence. Downey. Norwalk. Costa. Anaheim. 20. Quaternary. *(. (c u u 21. A ridge of marine 19 c. Pliocene Tertiary, full of shells, &c., lies west of the road for five miles. 22. Metam orphic Cretaceous hills west of road, and granite (1. Archaean?) helow. 23. 19 b. Miocene (Tertiary) hills come near on the west. 24. 18. Metamorphic Cretaceous hills on the west, mostly capped by 19 c. Miocene Tertiary (marine.) 25. The celebrated New Almaden Quicksilver Mines are not far west. 26. Some Lignitic (19 a. Eocene and later) exists to the west, but has not yet been found workable. 27. Passes through the 18. Cretaceous hills, flanked by 19. Tertiary (19 a. Miocene and 19 b. Pliocene) on the west. Some lignite in it. 28. The hills to the southwest are metamorphic and granitic, with 19. Tertiary on their flanks as before. 29. Much 19. Tertiary on the slopes of hills around, with very fine marine fossils (19 b. Miocene and 19 c. Pliocene). 30. The New Idria Quicksilver Mine lies to the southeast in the highest part of this range of mountains, near 5,000 feet elevation. 31. The hills northward are metamorphic (18. Cretaceous?), with a great 19. Tertiary (19 b. Miocene and 19 c. Pliocene) basin between them and the range north of San Fernando. To the east more metamorphic and granitic, with auriferous quartz, copper, &c. The 19. Tertiary contains much petroleum. 32. A metamorphic (18. Cretaceous) hill north of this harbor. The islands visible are similar, with some 20. Quaternary sandstone and Paleozoic rocks. 33. About half way the metamorphic and granitic hills approach the road. Much 19 b. Mio- cene Tertiary, with poor lignite, caps these on the west. 34. Metamorphic auriferous rocks (secondary) overlying granite, chiefly on the west side. San Barnardino Mountain is 11,600 feet high. 35. The foothills are full of Tertiary fossils (Miocene and Pliocene). The metamorphic and volcanic mountains contain valuable quicksilver mines. 36. Some indications of quicksilver in the hills. Chromic iron and pyrolusite are also found in targe quanties. 37. Mt. Tamalpais, 2,W4 feet high, may be ascended here. Gives a magnificent view of the country near Sau Francisco Bay. .172 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (CAL. & W. T.) Ms. Northern Pacific Coast Railroad. Ms. | Northern Pacific Coast R. R.— Cont. a 8 0 11 15 17 San Francisco. San Quentin. 8 6 San Rafael.37 Junction. ( 18 c. Lign. & Metam. Cretaceous, u (i « 17 19 25 31 35 42£ 47£ 55 Junction. Parker's. Nicasio. Taylorville. Garcia. Millerton. Marshall's. Tomales. j 18 c. Lign. & Metam. ( Cretaceous. u « u II 19 b. Tertiary, Miocene. «( 0 6 10 15 17 San Francisco. Saucelito. Lyford's. Tamalpais. Junction. j 18 c. Lign. & Metam. ( Cretaceous. «. u (( (I 38. The only groves of the celebrated " Eedwood " tree, accessible by railroad, are on this route and northward. J- &• C. Washington Territory.1 Ms. Northern Pacific Railroad. Portland to Canyon City— River and Stage ~~0 Kalama. r\ in,-. Basalt hills.3 « Line — Lewiston River and Railroad. (Among the finest scenery of the continent.) 5 8 Carroll s. Monticello. « Portland. ( On the left Basalt Mts., ( on the right Alluvial. 11 28 37 Cowlitz. Olequa. Winlock. U (( (( Vancouver. j Alluvial and Post Plio- ( cene gravels. « 48 60 Newaukum. Skookum C'k 19. Tertiary hills. 19. Cretace's, with coal. Sandy. 1 Basalt Mts. overlying fossil leaf- beds and 66 Tenino. C Mound Prairie, a strange -| grouping of natural ( mounds. Cascades. petrified wood — whole trees, stumps & roots in place. 96 105 Lake View. New Tacoma. Down Puget Seattle. I 19 c. Pliocene deposits, •] overlaid with glacial ( drift. Sound. 18, Cretaceous coal. Up. Cascades. Rock Creek. Collin's. Hood River. Conglomerate, &c. {Abundance of silicified oak in Tertiary con- glomerates. Buried forests. Sight of Mt. Hood and Mt. Adams. Pliocene sandstone.with Dalles City. • fossil leaves and Post Pliocene fossil beds. Hence to Lewiston by Kailroad or River. To Canyon City by Stage. The Dalles f Through wonderful beds of mammalian fossils of | 19 b. Miocene age, cor- to •{ responding with the " Mauvaises Terres," 1 or bad lands of Ne- Canyon City. [ braska and Dakota. 1. Furnished by Prof. Condon, the State Geologist of Oregon. 2. Basalt is an igneous rock occurring in the volcanic and trap series. The 18. Cretaceous era, and still more the 19. Tertiary and 20. Quaternary, were remarkable for the extent of ^he eruptions over the western part of this continent in Oregon, Washington, &c. Basalt being an intrusive rock is not here distinguished by any number denoting its age, as that can only be.known by the forma tion on which it rests, or that resting upon it, if there be any. OREGON. 173 Oregon.* Oregon and California Railroad. jM>. Oregon and California B. B.— Cont. Ms. | (Up the Willamette Valley. 81 Albany. j The above rock seen ( across the river. f Hills on west. Basalt 0 Portland. alluvial gravel plain i east. 19 b. Miocene 87 Tangent. IAn extended bed of an ancient inland sea, 1 fossils in the river bed. 98 Halsey. named by Prof. Con- 7 11 Milwaukee. Clackamas. Basalt hills. 106 110 Harrisburg. Junction. don " The Willamette Sound," with abund- l' Bed of river and hills on ance of 20. Ter. fossils. 16 Oregon City. •< both sides columnar ( basalt. 124 Eugene. iThe hills again with abundant 19 b. Mio- 'A transverse dike of cene fossils. 20 Rock Island. trap, with amygdaloid. Hillsof basalt. The bed of the river and the now widening valley of 20. Post Pliocene contain 135 145 148 156 161 Creswell. Latham. Divide. Comstock. Rice Hill. Yolcanic tufas and por- [phyries. j Carbonace'us shale,with ( coal 18. Cretaceous. 25 Canby. abundant fossil re- 181 Oakland. Metamorphic. mains of bos, latifrous, 200 Roseburg. ielephas, mastodon and Oregon Central Railroad. 29 Aurora. horse. A "Pr^rvflanfl ( Hills of basalt, overly- The streams here to u irortia.nu.« ( ing 19 b. Miocene. 33 Hubbard. right and left expose 6 Summit. Basalt. 40 Gervais. this 20. Post Pliocene 9 Ross Landing mud. ITo Forest Grove over 53 61 Salem. Turner. The river bed is 20. Post Pliocene. The •< hills are rich with 19 11 16 Beaverton. Readsville. the bed of the 20. Post Miocene inland sea, connected with the 67 Marion. b. Miocene marine fos- 24 Hillsboro. main one of Willamet- 72 Jefferson. sils. 29 Cornelius. Forest Grove. te Valley, through the Twalatin and Cheha- (Exposure a A ridge of dark colored lem Valley. mile above J 19. Tertiary crosses the ( Hills of fossil rock the town on j line of travel here — 32 Gaston. •j right and left, 19 b. the Santiana rich in fossils. ( Miocene. River.) . 48 St. Joseph's. * Furnished for this work by Prof. Thomas Condon, of the Oregon State University, Eugene City, Oregon, the State Geologist. 174 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (DEL. & E. MD.) Delaware and the Eastern Shore of Maryland. Delaware Railroad. (Operated by the Philadelphia, Wilmington and Ms. | Baltimore Railroad,) Ms. | Maryland and Delaware Railroad. 0 5 14 20 24 32 44 Clayton. Kenton. Marydell. Goldsboro. Greensboro. Hillsboro. Easton. 18. Cretaceous. it tt a u tt u 0 6 16 21 25 29 37 Wilmington. New Castle. Kirkwood. Mt. Pleasant. Middletown. Townsend. Clayton. (18. Cretaceous? ( 17. Jurassic. 18. Cretaceous. 19 a. Eocene? « 19 b. Miocene. 18. Cretaceous. Queen Anne's and Kent Railroad. 0 10 14 26 36 Townsend. Massey's Junct. Millington. Tilghman's. Centreville. 19 b. Miocene. ii ii u 14 37 39 Clayton. Smyrna. 18. Cretaceous. 20. Post Pliocene. 37 48 51 66 58 64 68 76 84 90 97 Clayton. Dover. Wyoming. Canterbury. Felton. Harrington. Farmington. Bridgeville. Seaford. Laurel. Delmar. 18. Cretaceous. 19 b. Miocene. 20. Post Pliocene. Kent County Railroad. 0 10 20 31 36 Wilmington. Clayton. Massey's Junct. Kennedyville. Chestertown. Parsons. [As before.) 18. Cretaceous 1C It u Dorchester and Delaware Railroad. 0 10 14 20 33 Seaford. Federalsburg. Williamsburg. EastNewmarket Cambridge. 20. Post Pliocene. u u tt n Eastern Shore Railroad. 0 6 10 19 24 28 32 38 Delmar, Del. Salisbury, Md. Eden. Princess Anne. Westover. Kingston. Marion. Crisfield. 19 b. Miocene Tertiary. 20. Post Pliocene. Wicomico and Pocomoke Railroad. 0 10 19 23 29 37 Salisbury. Pittsville. St. Martin's. Berlin. Newark. Snow Hill. 20. Post Pliocene. u n it tt tt Junction, Breakwater, Franklin and Wor- cester Railroad. Wilmington and Western Railroad. 0 9 12 17 25 Wilmington. Harrington. Milford. Lincoln. Ellendale. Georgetown. 19 b. Miocene Tertiary. a. it tt it 0 12 17 20 Wilmington. Ashland. Southwood. Landenberg. (18. Cretaceous. | 17. Jurassic. 2-8. Silurian. it it 25 [Georgetown. 31Harbeson. 33jCool Spring. 36Nassau. 40'Lewes. 19 b. Miocene Tertiary. 20. Post Pliocene. (i <( " (Modern.) Wilmington and Northern Railroad. 0 39 57 61 63 65 66 68 72 Reading, Pa. Coatesville. Chadd's Ford. Smith's Bridge. Centre. Dupont. Greenville. Lancaster Road. Wilmington. (See Pennsylvania.) u 1. Azoic. c t, < (18. Cretaceous. ( 17. Jurassic. 25 41 54 68 77 81 Georgetown. Frankford. Berlin. Snow Hill. Stockton. Franklin. (As before.) 20. Post Pliocene. u t( ii " (Modern.) * By Prof. P. E. Uhler, of the Peabody Institute, Baltimore. MARYLAND AND DISTRICT OF COLUMBIA. 175 Maryland and District of Columbia.* Philadelphia, Wilmington and Baltimore Ms. | Railroad. Ms. Baltimore and Ohio Railroad. Washington Branch. 0 28 30 32 34 40 46 52 55 61 62 67 74 77 79 89 94 98 Philadelphia. Wilmington. Delaware June. Newport. Stanton. Newark. Elkton. Northeast.1 Charlestown. Perryville. (Susquel Havre-de-Grace. Aberdeen. Bush River.8 Edgewood. Magnolia. Stemmer's Run. Bay View. Baltimore. |(See Pennsylvania. ) 18. Cret. & 17. Jurassic. t,c ii H It li ll II " & Archaean. ianna River.) 18. Cret. & 17. Jurassic. tt tt « ii ii « it 0 9 19 22 28 34 34 40 j Baltimore.7 | ] Camden Sta'n Relay House.9 Annapolis Jun. Laurel. Beltsville. Alexandria Jun. Bladensburg. Washington.9 17. Jurassic. 1 a. Lauren'n, Granite. 17. Jurassic. 1. a. Lauren. Alexandria Branch. 0 34 40 42 46 Baltimore. Alexandria Jun. Banning's. Uniontown. Shepherd. (As before.) 17. Jurassic. it ii Cretaceous & Jurassic. Annapolis and Elk Ridge Railroad. 0 1 10 12 14 16 18 21 Annapolis June. Patuxent. Odenton. Gambrill's. Millersville. Waterbury. Crownsville. Iglehart. Camp Parole. Annapolis. l 19. Cret. & 17. Jurass. « 20. Recent 17. Jurassic. « Cretaceous. ( &1 a. Lauren'n ? ( Eocene in vicinity. Philadelphia and B 0 Philadelphia. 36 Kennett. 52 Oxford. 60 Rising Sun. 67 Rowlandville. 71 Port Deposit.8 75 Perryville. 112 Baltimore.7 Eiltimore Central R. R. (See Pennsylvania.) n a 1 a. Laure'n, Serpentine. u " Granite. 17-18. Jurasso-Creta. u ( " Patches of •j 19. Tertiary on de- ( nuded surface. u 163 166 171 177 182 188 192 195 Mclvor's. Burford's. Lynchburg.16 Lucado. Lawyer's Road. Evington. Dtter River. Synch's. tMic.&Hor.SL&Trap. 1. Archaean, C. B. ["Micaceous and Argil. Slates, including pat- < ches of Limestone & Steatite, Epidotic and (_ Chloritic Quartzites. 1. Archaean, C. 21 33 42 47 53 58 60 65 Fredericksburg. Guinea's. Milford. Penola. Ruther Glen. Junction. Taylorsville. Ashland. (ing on gneiss at Falls. 19. Tertiary. Jurasso-Creta's, 17-18. tt 1 20. Quaternary,gneiss •< coming to surface, 199 205 209 215 Staunton River. Sycamore. Ward's Springs. Whittles. u tt 82 84 Richmond. Manchester Crossing. (Same as before.) {20. Quaternary, on decomposing Gneiss, 220 Chatham. TV Tl 1 (Mesozoic, 17-16.Jur- (asso-Triassic, W.mar. 87 90 Temple's. Drewry's Bluff. j« 226 Jry Fork. 93 Halfway. (i 230 236 Fall Creek. Danville. 1. Archaean, C. 95 Chester. {W. limit of Upp. Me- sozoic and 19. Ter- 237 Dundee. " tiary. Manassas Division of W. C., Va., Mid. and 98 PortWalthallJ. J f| Great Southern Railroad. 105 Petersburg. E. outc. of Gne. Arch. C 0 Alexandria. (As before.) 115 Reams. ^l 27 1 Manassas June. Mes., 17-16. Juras-Tria. 127 Stony Creek. Gneiss higher up, on crk 36 Gainesville. tt 10K Tarratt'«5 (Gneiss short distance 38 Haymarket. tt xOU *J til 1 tilt b. ( W. Tertiary ditto E. fl. Archaean, B, Slaty 147 Bellfield. 19. Terti. short dist. E. 40 Thoroughfare. Quartzite, Epid. Chlo. 154 Greensville Jun. " •I Argil. & Mic. Slates of 164 Pleasant HilL " 44 Broad Run. Bull Run and Pond 168 Weldon. E. outc. of Gn. in Riv.,C (_ Mountains. 49 Plains. 1. Archaean, C. Piedmont Air Line Railroad. 54 Salem. ti 0 Richmond. (Same as before.) 60 Rectortown. B. 2 R.F.&P. Junct. it 63 Delaplane. u 22 Powhatan. W. edge of Mes. cl. field 67 Markham. " 36 Amelia C. H. 1. Archaean, A. 72 Linden. " 58 Burkeville. 76 Happy Creek. « 73 Keysville. 79 Front Royal. Cambrian, 3 a. Calcifer. 90 Roanoke. 81 River. Sil-Camb. 4 a. & b. Tr. & 101 Scottsburg. 85Buckton. Ut. 4 c. Hudson Riv. 109 Boston.17 1. Archaean, C. 86 Water Lick. ( Fort Mt. Synclinal, ( (5 a. & b.) ends near. 127 135 Barksdale. Ringgold. 90 Strasburg. "4.a&b.Tr.&Ut. 141 Danville. 91|Strasburg June. tt U 156 Ruffin, N. C. deposit exists in that region at the depth of 558 feet below the surface, overlaid by Miocene and Pliocene beds, and resting upon an Eocene deposit identical with that which underlies it at Rich- mond. ' We are thus assured of the great extension seaward of this deposit, and have the means of estimating the thickness of the Tertiary formations as far east as the mouth of the James River. 184 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (VA.) Richmond, York River and Chesapeake Atlantic, Mississippi and Ohio Railroad- Ms. | Railroad. Ms. | Continued. 0 Richmond.18 (Same as before.) 191 Concord. 1. Archaean, B. 7 Fair Oaks. At Richmond tunnel cuts Tert'y Infusorial 204 215 Lynchburg. Forrest. 1. Archaean, A. 13 Dispatch. bed, 19 b.'Miocene. In this interval both 229 241 Liberty. Buford's. 2-4. Cambrian, 3 a. Cal. Lower and Upper 19. 246 Blue Ridge. 3 a. b. 15 Summit. Tertiary are accessi- 251 Ronsack's. u ble above tide level. 254 Gish's. <( 20 24 Tunstall's. White House. ^Eocene and Miocene. In this interval, only 252 264 Big Lick. Salem.19 ( & Sil-Cambrian. •1 3c&-4aCh.&Tr. 26 31 38 Fish Hand. Sweet Hall. West Point. I Upper 19. Tertiary is accessible above tide ^ level. 19 b. Miocene. 277 281 285 Big Spring. Alleghany. Big Tunnel. ( 3 b. c. U Atlantic, Mississippi and Ohio Railroad. 290 301 Christiansb'g.20 Central. ;; ! '20. Quaternary, rest- 302 New River. * 0 Norfolk. . ing on Upper Tertiary 309 Dublin. u 23 Suffolk. (.19 c. Pliocene. Up. 19. Ter.&19b.Mio. 316 Martin's. ( Fault of Draper's Mt. •< Silurian & Devonian 34 41 A K Windsor. Zuni. T if u 329 337 Max Meadows. Wytheville.81 ( against Sub-Carbonif. 2-4. Cambrian, 3 b. c. 4:0 ivor. 350 Rural Retreat. U 52 Wakefield. tt 364 Marion. &Sil-Cam.3c,4a. 60 Waverly. ( Lower 19. Tertiary •< here probably above 380 393 Glade Spring.82 Abingdon. (C ( tide level. 408 Rpiet.nl u 68 Disputanta. tt 81 Petersburg. (E. margin of 19. Ter- •aiary &U. 17-18 Mes. Continued as East Tennessee, Virginia & Georgia Railroad. 96 O Church Road. (resting on Gneiss, C. 1. Archaean, C. Seaboard and Roanoke Railroad. 101 108 Ford's. Wilson's. u 0 Portsmouth. (20. Quat. on 19. Tei> (and 19 c. Pliocene. 112 Wells rille. 1. Archaean, A. 17 Suffolk. 20. Quat. on 19 b. Mioc. 118 Blacks & Whites " 31 Carrsville. tt 124 Nottoway C. H. M 37 Franklin. u 133 Burkeville. II 42 Nottoway. u 141 Rice's. U 50 Newson's. {( 149 Farmville. | 16.Mesozoic, 17-16. Jurasso-Triassic, 55 63 Boykin's. Margaretsville. II 161 Prospect. ] Archaean, A. 68 Seaboard. u 169 Pamplin's. si 78 Gary's. " 181 Appomattox. it 80 Weldon. Outcrop of Gneiss. 19. From this point, for many miles towards the southwest, the railroad runs near to and almost parallel with the broken synclinal, (about 25 miles long), of which the lofty Catawba and Fort Lewis Mountains are the principal parts. The former, composed of southeast dipping 4 a. b., &c., forms the farther or northwest rim of the synclinal, and bending abruptly around at its northeast end, becomes the Tinker Mountain, which closes the basin in that direction. A shorter and gentler bend at the southwest end, terminates in a fault. The corresponding rocks of the southeast, or near side of the synclinal, are only partially preserved in a narrow inverted ridge at either end, the remainder of this rim of the synclinal having been engulfed in the prolonged fault, which, for many miles along the margin of the basin, has brought the Siluro-Cambrian rocks (4 a. c.) of the valley to abut against, and over-ride the Devonian 10. to 12. and the Vespertine 13 a., of which the Fort Lewis Mountain, the central mass of tbe synclinal, is mainly composed. 20. A few miles west-by-north of this is an area of Vespertine rocks 13 a., including one or more workable beds of coal, mined on Stroubler Kun and elsewhere. This area, once probably continuous with the Vespertine of Fort Lewis Mountain, is almost encompassed by faults. Farther to the northwest, and separated from the above by a belt of Cambrian and Siluro-Cambrian rocks 3 c., 4 a., &c., the Vespertine beds of the southeast slope of the Brushy Mountain, contain a similar coal, mined on Tom's Creek, &c., all these seams being more or less affected by the neighboring faults. The dislocation which, southeast of Brushy Mountain, brings Vespertine and Umbral in apposition with Siluro-Cambrian Matinal, is part of the great fault which, with some changes of direction and character, extends along the northwest edge of the great valley, from near the James River to the end of the Brushy Mountain, northeast of Abingdon, a distance of about 125 miles. VIRGINIA. 185 Ms. | Washington and Ohio Railroad. Ms. | Washington & Ohio Railroad— Cant. 0| Alexandria. 7'Carlin's. (Same as before.) 27 Guilford. (Mesozoic, 17-16. Jur- ( asso-Triassic. 11 [Fall's Church. 1. Archaean, C. 31 Farmwell. « 15 Vienna. 1. Archaean, A. 38 Leesburg. " W. mar. Cong. 18 Hunter's. « 42 Clark's Gap. 1. Archaean, B. 21 Thornton. 1. Archaean, B. 45 Hamilton. " 23 Herndon. ( Mesozoic, 17-16. Jur- ( asso-Triassic. 49 Purcellville. 52 Round Hill. n « At a distance of 23 miles, in a northwest direction, is the sheet of water called "Mountain Lake," situated near the top of Salt Pond Mountain, at a height of 4,000 feet above tide. Here the Potts and Johns Creek Mountains and the other ridges of 5 a. b. coalesce at their southwest termination, iuto a lofty rugged table-land, overlooking the New River, and commanding wide views. 21. A few miles south, the Lick Mountain range divides the valley for some miles into two, and in the southern of these belts, on the New River, below the mouth of Cripple Creek, are the Austenville lead mines, in 3 b., near the Primal 2 b. of Poplar Camp Mountain, and about 15 miles distant from Wytheville. 22. From this point a short branch railroad leads north into the valley of the north fork of the Holston River, bet\yeen Walker's Mountain, 5 a., &c., and Poor Valley ridge. Vespertine 13 c., &c., which flanks the Clinch Mountain on the southeast side. Here, near Saltville, are the remarkable salt wells, which penetrate into a thick mass of rock-salt; and in the same vicinity, and at various points higher up the valley, for a distance of 20 miles, beds of gypsum have been opened and extensively wrought. These deposits are found near and in a line of fault, along which the Siluro- Cambrian 3 c. 4 a., of the southeast side of the valley, has been made to abut against and some- times over-ride the Umbral 13 b., which, with the Vespertine 13 a. of the Poor Valley Mountain, form a belt on the northwest side of the valley. Both deposits are most probably referable to the Subcarboniferous period. The fault here spoken of extends, with some local changes of character and direction, in a west-by-southwest course, from a point in Giles county to the Tennessee line, a distance of 125 miles, and is prolonged many miles into Tennessee. WILLIAM B. ROGERS. 23. So few details have been published on the geology of Virginia, that no chapter in this volume will be more welcome to geologists than this, which has been wholly and very carefully prepared by Professor William B. Rogers, late State Geologist of Virginia. J. M. 186 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (X. C.) North Carolina.1 Wilmington and Weldon R. R, — 162 miles ; N. and S. This road runs throughout its whole length from Wilmington to Weldon on the (20) Quaternary formation, with occasional small exposures of the Tertiary (19 a.) Eocene and (19 b.) Miocene and of the (18) Cretaceous in the banks of the streams. Atlantic and North Carolina R. R.— 95 miles ; E. and W. From Morehead to Golds- boro, 95 miles; also on (20) Quaternary, with (19) Tertiary and (18) Cretaceous in the banks of the streams. Ms. | Piedmont Air Line. Ms. Carolina Central R. R. 229 ms. 00 141 156 165 183 189 Richmond, Va. Danville,.Va. Ruffin. Reidsville. Greensboro. Upper Laurentian, 42 m. a u (C U 0 117 123 128 135 147 163 172 187 199 229 WILMINGTON. Rockingham. Pedee River.* Lileaville. Wadesboro. Monroe. CHARLOTTE. Catawba River Shelby. 20. Quaternary, 117 ms. 20. Quat'y & 1 b. Hur'n. 1 b. Huronian, 6 ms. 1 a. Laurentian, 5 ms. 16. Triassic, 19 ms. Lower Laurentian, 6 ms. 1 b. Huronian, 25 ms. 00 21 30 32 41 55 69 72 73 78 81 96 106 109 118 130 N. C. Div. East Greensboro. Comp'y's shops Mebanesville. Hillsboro.3 Durham. Morrisville.3 Gary. RALEIGH. Clayton. (Neuse River.) Selma. Princeton. Goldsboro. . Greensboro to Goldsboro. 1 a. Laurentian, 30 ms. « 1 a. L. Laurentian, 57m. « 1 a. Laurentian. 1 b. Huronian, 20 ms. ic 16. Triassic, 22 ms. M Western North Carolina R. R. W. 114 miles. 00 102 106 114 Salisbury. Marion.5 Blue Ridge. 1 a. Laurentian, 106 ms. u 1 b. Huronian, 6 ms. 1 b. Huronian, 8 ms. 1 a. Laurentian, 28 ms. 182 Montgomery. (( 1. Prepared expressly for this work by Prof. William Gesner, of Birmingham, Ala., Geologist and Analytical Chemist, and by Prof. Eugene A. Smith, the State Geologist. 2. Ascending the mountain from Wilhite's to Summit, Flint Creek shows looming above it cliffs of millstone grit, sandstone and shales, as seen from the car windows. W. G. 3. White and red sulphur and Chalybrate waters of great sanitary value at Blount Springs are much resorted to, particularly in the summer season, from all the States; and the Jackson House, by S. D. Holt, is a well kept hotel. The 10 c. Black Shale gives rise to the sulphur springs. The mountains on each side are 14 a. Carboniferous. W. G. 4. The Pierce Coal Mine Company and Alabama M, & M. Company's mines here. W. G. * Eureka furnaces and coke ovens. ALABAMA. 201 Selma, Rome and Dalton Railroad, Alabama and Chattanooga Railroad— C'on- Ms. | or, Blue Mountain Route. Ms. | tinued. 0 Selma. 18. Cretaceous. 26 Rising lawn. 4 c. Cincmn. & 4 a. Tren. 9 Burns ville. u 28 Cloverdale. " 22 32 40 49 51 Plantersville. Maplesville. Randolph. Ashby. Briarfield. 8 20. Quaternary. u 3 b. Knox Dolomite. 32 34 40 46 51 Sulphur Springs Eureka. Valley Head. Hollman's. Fort Payne. 14 b. Warrior coal field. a 55 Montevallo.9 3 a. Calciferous, 1 mile. 3 b. Quebec, 5 miles. 56 61 Brandon's. Porterville. 62 Calera. 3 c. Chazy, Trenton & 65 Collinsville. ridge of 13 a. Sub-Car. 74 Greenwood. SB'*- ^.33^3^" tlijf & M Gardner's. 14. Coosa coal field. 82 Reases. g.' Elif » Bg-^ < o a g* 67 72 82 Shelby Spr'gs10 Columbiana. 1 l Wilsonville. Coosa River. 1 2 3 b. Quebec or Knox. 87 95 102 115 Attalla. Steele's. Whitney or Ash Springville. Ifltsfgfefftf ville. 3 b. Quebec or Knox. Coosa Station. t 131 Trussville. " 90 99 109 126 Childersburg. Alpine.13 Talledega. 'Alabama Turn Munford. i ace.) ' < 137 143 155 167 Irondale. Birmingham. Jonesboro. Tannehill.1* 4 a. Tren. & 3 c. b. & a. of Canadian anti. axis. 3 c. and 3 b. Canadian. 3 b. or 3 a. Canadian. Silver Run.14 , 170 Green Pond. 3 b. Quebec or Knox. 130 Oxford. x 5 i 174 Bibbville. 14 b. Warrior coal field. 131 Anniston. * Woodstock 178 Vances. u 139 Weaver's. ' IronWks. 183 Clement's. (4 145 Jacksonvill e. 191 Kennidale. " 156 Patona. i 198 Tuscaloosa. 20. Quaternary. I/ross Plains. < 204 Maxwell's. " 160 Ladiga. Amberson. < Tecumseh ' Iron Co. 213 Carthage. Stewart's or Ha vanna. " 164 State Line. 1 6 4 Stonewall Ir. 223 Akron. 18 b. Cretac. rotten l.s. 168 Prvor's. Ga. 5 b. Clinton. Works. 233 Eutaw. " 170 Cave Springs. l72iRome, Ga. 4 a. Trenton. 239 243 OPCA Haysville. Boligee. « Alabama and Chattanooga Railroad. is ^DU 259 263 Livingston. Hooks. (C 19 a. Tertiary, 36 miles. 0 Chattanooga, Te nn. 19 4 a. Trenton. 269 York. 6 Wauhatchie, " 4 b. Cincinnati. 274 Cuba. 9 Wildwood, Ga. 4 a. Trenton. 279 Kewanee. 12 Morganville, " 14 283 Toomsuba. 18 Trenton, " " 290 Russell's. 23 Dademon, Ala. (1 295 Meridian. 5. The prosperous city of Birmingham is in Jones' Valley. The railroad then passes through Red Mountain by Grace's Gap. The rocks of the anticlinal axis show, at the junction of the Lower Carboniferous with the 5 c. Clinton, an exposure of fossiliferous hematite iron ore, 28 feet thick, which is being used in the production of an excellent quality of iron by the Eureka Com- pany, at Oxmoor, at the next station. This bed of iron ore extends from a few miles below Pratt's Ferry on the Cahaba River, in Bibb County, through St. Clair, Cherokee and De Kalb counties, into Tennessee, a distance of 120 miles. W. G. 6. S. D. Holt and Davis and Carr's collieries. W. G. 7. Eureka Company's colliery and Central Iron Works Company at Helena. W. G. 8. Branch railroad to Briarfield Rolling Mills and Furnaces. W. G. 9. Cahawba coal field on the west, with branch railroad to the Montevallo coal mines of Dr. T. II Aldrich. W. G. 10. Shelby Springs, Chalybrate and sulphuretted Hydrogen water of great renown, and much frequented. W. G. 11. Columbiana branch to Shelby Iron Works. W. G. 12. From Coosa River to Childersburgh, mountains of 2 b. Potsdam sandstone are seen to the southeast from car windows. E. A. S. 13. From Alpine to Telladega, 2 b. Potsdam sandstone mountains on the west, and 2 a. Acadian slate hills toward the east. E. A. S. 14. At Silver River, 2 a. Acadian on the east, and 2 b. Potsdam on the west. E. A. S. 202 AX AMERICAN GEOLOGICAL RAILWAY GUIDE. (ALA.) Ms. Memphis and Charleston Railroad. Ms. Nashville and Chattanooga Railroad. 0 Memphis. 20. Quat'ry, bluff loam. Stevenson June. 3 b. Quebec or Knox. 5 Buntyn. (i Bass Station. tt 9 White's. n 49 Anderson. 13 a. Sub-Carbonifer. 15 Germantown. n 39 Stevenson. 3 b. Quebec or Knox. 19 Bailey's. (19. Tertiary, orange ( sandLaGrangegroup. 29 22 Bridgeport. Shellmound. 3 c. Canadian. 20. Quat'ry, Alluvium. 23 Collierville. it 14 Whiteside. 14 b. Coal Mrs. & 13 c. 31 LaFayette. a (Etna Coal Mines.) 89 Moscow. n 6 Wauhatchie. 4 b. Cincinnati. 52 Somerville. it 0 Chattanooga.15* 4 a. Tren. & 3 c. Canad. 49 La Grange. tt (( Nashville and Decatur Railroad. 52 Grand Junction. 0 Decatur. 13 b. Lower Carbonifer. 58 64 Saulsbury. Mile Siding. 19. Tert', Porter's Creek 3 13 Harris Station. Athens. it u 74 Pocahontas. " group. 22 Elkmont. tt 79 Big Hill. 18. Cretac's, green sand Pittensville. tt 84 no Chewalla. nrkT»intV» "\TicQ group. 1 8 c HiDlcv ^roxiD 27 State Line. 3 b. Quebec or Knox. yo 107 VAH llllii) Jllloo* Burnsville. Western Railroad of Alabama. 115 luka. 13 b. & a. Sub-Carbon. 0 West Point. 1 b. Huronian. 124 Margerum, Ala. it 11 Cusseta. 127 Dickson. «« 13 Mt. Jefferson. 129 133 Cherokee. Barton. ti 18 22 Rough & Ready. Opelika. 139 Pride's. 13 b. & a. Sub-Carbon. 28 Auburn. & 20. Quat'ry. 145 Tuscumbia. 13 a. Lower Carbonifer. 35 Loachapoka. 20. Quaternary. 156Leighton. < 42 Notasulga. tt 163 IfiQ Town Creek. 0 o u i* tl £inci t t Fisher Branch— (Narrow Gauge to Tuskegee.) J.O u 176 182 188 195 Hillsboro. Trinity. Decatur. Mooresville. i t 13 b. Lower Carbonifer. it 48 56 65 Chehaw. (To Tallahassee Cowles' Station. Shorter's. 20. Quaternary. Factory), 1 b. Huronian. 20. Quaternary. 18. Cretaceous. 203 Madison. n 75 Mt. Meigs. ( 3 b. Chazy and 3 b. 88 Montgomery. 212 223 Huntsville. Brownsboro. K Quebec, hills 14 a. ( Sub-Carboniferous. tt 101 107 113 Manack. Lowndesboro. Whitehall. 229 233 Gurley's. Paint Rock. it 13 a. Sub-Carbonifer. 119 127 Benton. Alabama River. 237 Woodville. M 138 JSelma. 248 Larkinsville. ti Columbus Branch. 254 Scottsboro. " o Columbus. 1 b. Huronian. 259 Bellefonte. <• 4 Smith's or Dover tt 265 Fackler's. it 6 Mott's Mill. 20. Quaternary. ( 3 b Quebec or Knox 8 Salem. tt 271 Stevenson. •< shale, with hills o1 19 Hollis. 1 b. Huronian. ( Sub-Carboniferous. 25 Yonges.i ' ti 29|0pelika. tt 15. At Oxford, the railroad crosses through a gap of 2 b. Potsdam, and thence to Cross Plains the mountains of 2 b. Potsdam are on the east side. Beyond Cross Plains, to the State line, these mountains can be seen from the cars. E. A. S. 16. The railroad is built on 3b. Quebec or Knox dolomite almost all the way from Montevallo to the State line, crossing 3 c. Chazy and 4 a. Trenton near Calera and the Coosa coal field above Calera E. A. S. 17. Yong_esborough narrow gauge railroad, 2K miles to Chewackla Lime Company's kilns, southeast. The limestone of this company's quarries is a highly crystalline dolomite. W. G. ^ 18. The hills on the west of the railroad consist principally of limonite, and their detritus constitutes the bright red banks of the cuts and fills for many miles. The Thomas ore bank is on east side, close to the main track, nearly opposite the station house. The hills seen beyond tnese belong to the Warrior coal field. W.y. 19. In addition to the 4 a. Trenton, there are within the limits of the city of Chattanooga the 3 a. Calcif erpus, 4 b. Cincinnati, 5 Clinton, 10 a. Black shale, and 14. Carboniferous formations. [J. SAFFORD. ALABAMA. 203 Ms. I Mobile and Girard Railroad. Ms. | Alabama Central Railroad. 0 9 20 25 35 39 54 63 72 77 84 Columbus, Ga. Fort Mitchell. Seale. Hatchechubbee Hurtville. Guerryton. Union Springs. Thomas Station Linwood. Jonesville. Troy. 1 b. Huronian. 18. Cretaceous. i < 19. Tert ary. 0 23 30 35 42 50 66 81 108 Selma. Marion Junction Brown's. Uniontown. Fawnsdale. Macon. Van Buren. Demopolis. Coatopa. York. Cuba. Toomsuba. Meridian. 18. Cretaceous. ' i ( t t i t t t i t Mobile and Montgomery Railroad. 0 10 16 21 28 33 44 53 60 67 76 81 86 91 106 114 119 134 155 163 178 Montgomery. McGehee's. Morgansville. Letohatchie. Calhoun. Fort Deposit. Greenville. Boiling. Georgiaua. Garland. Madge's Mills. Gravella. Evergreen.1 Sparta. Castleberry. Brewton. Pollard. Whiting or Pen Williams. Bay Minette. Tensas River. Mobile, 18. Cretaceous, t c i i i 19. Tert ary. « u II (( it «( tt II (1 M sacola Jun. 19. Tert'ry. ii it it a Montgomery and Eufaula Railroad. 0 10 13 16 21 25 28 33 40 50 54 62 66 74 81 Montgomery. Oak Grove. Perry's Mill. Pike Road. Matthews'. Mitchell's. Fitzpatricks. Thompson's. Crossing of Mobil Union Springs. ThreePathRoad Midway. Spring Hill. Batesville. Cochran. Eufaula. 18. Cretaceous, a ti « u 1C e and Girard Railroad. 18. Cretaceous. u it u tt u { 18. Cretaceous, marl •J bluff of the Chatta- ( hoochie River. Selma, Marion and Memphis Railroad. 0 14 21 29 37 45 Selma. Marion Junction Marion. Grove Cottage, tfewbern. Greensboro. Sawyersville. 18. Cretaceous. it ii ii <( u it Selma and Gulf Railroad. 0 Selma. (Pleasant Hill. 'Snow Hill. 35Allenton. 40 Pine Apple. iCokerville. 18. Cretaceous. u M II 19. Tertiary. u Savannah and Memphis Railroad. °i 10 15 22 30 35 40 42 47 53 60 Opelika. Gold Hill. Waverly. Camp Hill. (Dudleyville Dadeville. Jackson's Gap. Sturdevant. Salisbury. Alexander City. Kellyton. Groodwater. 1 b. Huronian. ii <( it *old mines). 1 b. Huronian. it tt n 11 Stealite (soapstone) qur. Mobile and Alabama Grand Trunk R. R. OjMobile. 9 Cleveland. 20 Cold Creek. 29! Mount Vernon. 39Leona. 50Sunflower. 59 Jackson. 19. Tertiary. i t i i Mobile and Ohio Railroad. (Part in Alabama.) East Alabama and Cincinnati Railroad. 0 5 18 33 44 51 63' Mobile. Whistler. Dhunchula. Ditronelle. Deer Park. Escatawpa. State Line. 19. Tertiary. (C it tt (( II It 0 10 23 Opelika. Dak Bowery. Buffalo Wallow 1 b. Huronian. n ti Vicksburg and Brunswick Railroad. 0 5 25 Eufaula. White Oak. Clayton. 18. Cretaceous, ii tt 204 AN AMERICAN GEOLOGICAL RAILWAY GUIDE. (MISS.) Mississippi. New Orleans, St. Louis and Chicago Rail- Ms. Mobile & Ohio Railroad— Continued. Ms. | road. 135 Meridian. 19 a. Tertiary Eocene. 88 Osyka. 19. Later Tertiary. 147 Lockhart. " 98 Magnolia. 164 Narkeeta. u 108 Summit. 176 Scooba. 18. Cretaceous. 118 Bogue Chitto. 188Shuqulak. 1 128 Brookhaven. 198 Macon. • 139 Beauregard. 211 Crawford. « 149 Hazlehurst. 219 Artesia. ' 158 Crystal Springs. 232 West Point. i 167 Terry. 241 Muldon. i 174 Byram. 254 Egypt. i 183 Jackson. 19 a. Tertiary Eocene. 262 Okolona. ' 195 Madison. " 275 Verona. u 206 Canton. '< 287 Saltillo. M 220 Vaughans. " 297 Baldwyn. " 234 Goodman. i 309 Booneville. II 242 Durant. • 318 Rienzi. (t 251 West. i 829 Corinth. U 262 271 Vaiden. Winona. i New Orleans and Mobile Railroad. 283 Duck Hill. c 40 Grand Plain. 20. Quat'ry or Alluvium. 295 Grenada. t 52 Bay St. Louis. " 310 CofFeeville. « 64 Scott. u 323 Water Valley. a 71 Mississippi. " 333 Taylor's. n 80 Biloxi. " 340 Oxford. «« 90 Belle Fontaine. M S57 Abbeville. " 100 East Pascagoula it 369 Solly Springs. " 108 Murray. " 378 382 Eludsonville. Lamar. u Yicksburg and Meridian Railroad. 295 Grenada. 5 0 10 VlCKSDUrg. Bovina. •/u. quaternary. 19 a. Tertiary Eocene. Dakland. 18 Edwards. Sardis. ' 27 Bolton. Sernando. i 35 Clinton. Memphis. c 45 Jackson. Mobile and Ohio Railroad. 59 70 Pelahatchie. 63 State Line. 19. Later Tertiary. 79 Morton. 71 Buckatunna.