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NVINOSHLIWS SJIYVYUEIT LIBRARIES SMITHSONIAN } Ze 22) =z oe w = ¢ = es = NS = z F © a re (@) 5 Sas x aL oO ow : ae 2M 2 B ' ‘a= 2 i \. z = - G4 = a > ‘ = . 2 = 2 ” w Fs w) a. za w” 4. < RARIES SMITHSONIAN INSTITUTION | NOILNLILSNI NVINOSHLIWS = S3luWvugt7. e 7) = > Noi : EON ul . a ko a ae Z | 4. a4 pars aif on za oO =A o = z xv TT, ga < — < c mo 2 Uf 5 2 5 -- c ( ay. a eat) z eg | 25 HNLILSNI_NVINOSHLINS _ $3 iuYvug Jae LIBRARI ES_ SMITHSONIAN_INSTITUTION ‘ Sim D8 o = = a F h 4) = AN 5 0 = ee | = > SE > ‘> e: 0] ‘a SS = & = edi b Wasa = \s eS m os m 3 if ap) ; 4 2) ae bd zi RARIES SMITHSONIAN INSTITUTION NOILNLILSNI NVINOSHLINS S3I1YVUYdIT 3 i w ae * ” = ” P a = a = g@. =: 5 2 z S = es z ~ S O oa O 72 fe) - 2 S 2, = =. = : as - 2 - NVINOSHLINS S3IYVUSIT LIBRARIES SMITHSONIAN _INSTITUTION a a uJ a lu on re = a ra a = , =| I. arbusculus Hall Haime F. argus Hall H. irregulare Hail Alveolites goldfussi Billings H. reflexum Hall Pleurodictyum stylopora Eaton H. obconicum Hall Striatopora limbata Eaton H.confluens Hall Tichenor limestone The thin, but widely extended stratum of limestone that separates the Ludlowville from the Moscow shale was first described in the Third Annual report of the Fourth Geological District for 1838; page 298, by Professor Hall as it appears in Seneca county. In that report it is considered as “the terminating rock of the shale last described ” (Ludlowville) under the designation Encrinal lime- stone from the abundance of fragments of crinoidal columns it contains. In the final report on the fourth district, page 187, it is described as one of the divisions of the Hainilton group. The term “ Tiche- nor’”’ was substituted for “ Encrinal” in the title of this formation in Classification of New York Scries of Geological Formations by Clarke and Schuchert, 1goo, from its well known favorable exposure at Tichenor point, Canandaigua lake. This formation is a thin stratum of calcareous sediment that varies in character from a light colored compact blue limestone a few inches thick to a mass of hard calcareous shale with a thin uneven limestone at the base and other thin lentils of similar charac- ter interstratified in the succeeding 4 to 6 feet of shale. The compact layer has a subcrystalline appearance when broken, due to the fragmentary crinoidal columns, and the surface is at some localities marked by an abundance of Spirifer granu- losus, conspicuous for its great size. Otherwise this stratum is not usually very fossiliferous, but the overlying shales are rich in fine specimens of forms common in the shale above and _ below. Among the fossils found in the Tichenor limestone are: Phaceps rana Green Lyriopecten orbiculatus Hall Orthoceras coelamen Hall Spirifer granulosus (Conrad) O. exile Hall S. mucronatus (Conrad) The more favorable exposures of the Tichenor limestone on these quadrangles may be found at the top of the lower falls in the ravines of Bloomer falls and other creeks 2 miles east of Hayt 22 NEW YORK STATE MUSEUM Corners; at the forks of Indian creek a mile north of Willard and on the west side of Seneca lake in a small ravine 1% miles north of Dresden 6 rods above the New York Central Railroad and at the crest of the middle falls in the ravine of Kashong creek. Moscow shale This term was applied by Hall in the Third Annual Report of the Fourth District, page 298, to the shales that succeed the Tichenor limestone and are terminated above by the Tully limestone. Fol- lowing a description of this, the upper division of the Hamilton group, as it appears in Seneca county along the shores of Seneca and Cayuga lakes, he says: “ This shale is so well developed, and contains the fossils, particularly the trilobites, in such great per- fection, at Moscow, Livingston co., that I have given it that name. 3 As developed on these quadrangles the formation may be de- scribed as a soft mass of gray calcareous shale, very fossiliferous and light colored in the lower beds, the upper being darker, more argillaceous and containing fewer and smaller fossils. As a whole the formation generally assumes the character of the lower beds in a westerly direction and of the upper beds toward the east. At Moscow the dark upper beds are but 11 feet thick while on these quadrangles they constitute about one third the thickness of the formation and in Onondaga and Madison counties, they occupy all of the space but a few feet at the bottom, between the horizon of Tichenor and the Tully limestone. Concretionary calcareous layers, some of which are continuous for a considerable distance, while others extend but a few feet, com- posed of an agglomeration of fossils are of frequent occurrence in the lower beds and to a much less degree in the upper, and irregu- larly formed concretions, also containing many fossils, are common throughout the entire formation. The list of fossils that compose the fauna of the Moscow shales in the Canandaigua lake section published in Museum bulletin 63, contains 6 worms, 18 crustaceans, 7 cephalopods, 3 pteropods, 21 gastropods, 34 lamellibranchs, 52 brachiopods, 18 bryozoans, 5 corals and 26 crinoids, a total of 190 species. Exposures in which the entire section of the Moscow shales are accessible may be found in several ravines I to 2 miles east of Hayt Corners. The lower part is displayed along Indian creek p< GEOLOGY OF THE GENEVA-OVID QUADRANGLES 23 and its eastern branches and the upper part in Simpson creek in the State Hospital grounds at Willard below the Tully limestone at the quarry, and in the cliffs at Perry point and the adjacent ravine. They appear in the banks of the Keuka outlet and the floor and sides of Bruce’s gully afford an ideal display of the upper shales conveniently situated for the collection of fossils, and the entire section may be seen in the Kashong creek ravine between the top of the middle fall and the Tully limestone at the crest of the upper fall. Tully limestone The Tully limestone, so named by Vanuxem in the Third Annual Report of the Third Geological District for 1838, from large ex- posures and superior development in the town of Tully, Onondaga co., is specially interesting not only on account of its own composition and structure, but also from the fact that it is inter- stratified 250 feet below the top of a series of soft shales that succeed the Onondaga limestone for a thickness of a thousand feet and in which the Tichenor is the only other continuous lime- stone. The rock is fine grained blue black rather impure limestone that weathers light bluish gray. It is very compact and hard when fresh, but brittle, breaking easily under the hammer and, after long exposure, inclined to crumble into small angular fragments. This tendency impairs the value of this limestone for building purposes, and its impurity for the production of quicklime for which pur- poses it was formerly quarried to a considerable extent. Its chief economic value at present lies in its adaptability as road metal and in the manufacture of Portland cement. It is 9 to 15 feet thick on these quadrangles and usually separated into 4 or 5 distinct layers, the lower one 5 to 7 feet thick, the others varying from 1 to 3 feet. Frequent joints divide the strata into massive blocks and these are strewn along the ravines and the lake shore at the foot of the cliffs in which the limestone occurs. The change from the soft dark Moscow shale to the Tully limestone is abrupt, but at the top the overlying Genesee shale is quite calcareous for 3 to 5 feet. The Tully limestone is an important, easily recognized and reliable stratigraphic datum plane from Chenango county on the east where it is 30 feet thick to Gorham, Ontario co., on the west, where it disappears by thinning out. It is 9 feet thick at the head of the Kashong creek ravine; 12 feet, 6 inches to 13 feet, 6 inches along the Keuka outlet; 14 feet, 6 inches at Miller point; 14 feet at Lodi 24, NEW YORK STATE MUSEUM ‘glen; 13 feet in the quarry at Willard; 11 feet with possibly one or two layers at the top wanting in the old Johnson quarry 1% miles north of Ovid; and 14 to 15 feet in the ravines east of Hayt Corners. The lighter color and rugged character of the Tully as compared with the soft dark shales above it, make it a prominent feature in the stratigraphy of the cliffs on the lake shore and in the adjacent ravines. Its line of outcrops on these quadrangles is more than 30 miles long and the frequency and extent of the exposures make it possible to ascertain its position in reference to the lake level with a good degree of accuracy. At the head of the Kashong creek ravine the top of the limestone is 713 feet A. T., with a northward dip that is reversed a little farther south, as it is 560 feet A. T. in a small quarry 114 miles north of Dresden, and has the same ele- vation at the Cascade mills in the Keuka outlet gorge. At the mouth of Bruce gully it is 550 feet A. T. rising southward to 600 feet A. T. at the top of the falls in that ravine, and westward to the same elevation at Seneca mills a mile west of Cascade mills. In the Perry point ravine it is 565 feet A. T. Thence southward for 4 miles it is covered by drift to a ravine half a mile north of Plum point where it is 478 feet A. T. It sinks below lake level 444 feet A. T. on the north side of Plum point, rises 5 feet above in a small arch half a mile farther south, is covered by water for 60 rods, then rises to the hight of 45 feet above the lake in an anticlinal that holds it above the water across Severne point and to the north side of Miller point where with a 2 degree southward dip it finally disappears below the lake level. Its emergence on the east side is covered by drift, its southern exposure being 50 rods from the lake and 50 feet above it in a small ravine 1 mile south of Lodi Landing. A strong southward dip carries it below the lake level between this ravine and a small gully 4 mile farther south at the mouth of which the black Genesee shale is exposed. It appears at the mouth of Lodi glen 30 feet above the lake rising continually up the ravine for 75 rods showing a north- westward dip of about 100 feet per mile. It is prominently displayed in the cliffs and ravines north of Lodi Landing as a slightly undulatory light gray band 40 to 60 feet above the lake level for 3 miles, then sinks to partial submergence 34 of a mile south of the dock at Willard. It is 150 feet higher in the quarry on Simpson’s creek % mile northeast. Its next outcrop is in the old Johnson quarry 1% miles north of Ovid at the summit ida... _ GEOLOGY OF THE GENEVA-OVID QUADRANGLES 25 of the ridge that separates the Seneca from the Cayuga lake val- ley, 840 feet A. T., 395 feet higher than in the depression where it last appears on the lake shore 3% miles west and but 2 miles farther south. From this point it descends to 800 feet A. T. in an outcrop near the railroad station at Hayt Corners; 715 feet A. T. in Fall creek; 680 feet A. T. in the next ravine south, and 640 feet A. T. under the bridge over the third ravine, or 160 feet in 13g miles east and 34 mile south. At the top of the falls in the Barnum creek ravine it is 680 feet A. T. dipping as everywhere in this immediate vicinity at the rate of 100 to 150 feet per mile toward the southeast. It disappears under Cayuga lake 381 feet A. T. 7 of a mile southeast of Little point and ro miles southeast of its last outcrop on these quadrangles. Fossils are not generally common in the Tully limestone, but usually may be found in one or more of the layers in considerable numbers at each outcrop. These are in matter of number species of the fauna below but the presence of the brachiopod Hypothyris cuboides Sowerby (Rhynchonella venustula Hall) gives it definite stamp as a formation which must be regarded the earliest member of the Upper Devonic. Genesee shale In the annual and final reports of the fourth geological district, Professor Hall considered the heavy bed of black and dark shales that succeeds the Tully limestone as constituting one formation known at first as the “ Upper black shale”’ to distinguish it from the Lower or Marcellus shale, but later designated “ Genesee shale ”’ from its exposure in the Genesee valley. He recognized, however, a marked difference between the upper and lower beds in both lithologic character and the fossils they contain, referring to them frequently as “Upper Genesee” and “ Lower Genesee.” On page 422 of the report for 1839 he says: “ In this neighbor- hood, (the Genesee valley in the vicinity of Geneseo) the black shale is succeeded by a thin stratum of limestone.” Subsequent .in- vestigations under his direction have shown this to be the Genun- dewa (Styliola) limestone, which is continuous from Ontario county to Lake Erie, interstratified not far from the middle of the beds and that it is the only continuous layer of limestone in that region above the Tichenor limestone, 26 NEW YORK STATE MUSEUM For these and other reasons more fully set forth in Museum bulletin 63, the use of the term Genesee shale is restricted to beds between the Tully and the Genundewa limestones in Ontario county and westward and, on these quadrangles where the latter does not appear, to a band of calcareous shales and row of fossiliferous con- cretions in its horizon. The Genesee shale is a homogeneous mass of densely black thinly laminated bituminous shale that after exposure becomes fissile and splits into flat plates. The beds are usually traversed by approxi- mately parallel series of joints that intersect each other at different angles producing on the surface of horizontal exposures triangles, diamonds, rhomboids and other kindred forms, and in cliffs striking effects like bastions and buttresses. In old exposures the outward angles have been worn away and there are left rounded masses of black shale partly covered in sheltered places by a thin white efflorescence of alum produced by the decomposition of the con- tained iron pyrites. The formation is go feet thick on the Keuka outlet and 75 feet at the east line of the quadrangle. It is usually exposed more or less favorably wherever the Tully limestone crops out but the following are some of the more accessi- ble localities where it may be seen: in the cliffs and ravine on the south side of the Keuka outlet at Cascade mills; in the lower part of the ravine of Plum creek; along the lake shore and in ravines between Miller point and Starkey point; on the east shore between Faucetts point and Lamoreaux Landing; in all of the ravines in the vicinity of Lodi Landing; in the railroad cut at Willard; in the highway north of Ovid, and in all of the ravines southeast of Hayt Corners. Fossils are exceedingly rare in the Genesee shale, the densely black portion being practically barren though an occasional lignite and a few conodont teeth are found in them. The less bituminous shales contain: Pleurotomaria rugulata Hall Liorhynchus quadricostatum Styliolina fissurella Hall (Vanuxem) Pterochaenia fragilis (Hall) Probeloceras lutheri Clarke Lingula spatulata Vanuxem Bactrites aciculum (Hall) Orbiculoidea lodensis (Vanuxem) Genundewa limestone horizon In Ontario county and westward to Lake Erie the Genesee shale is succeeded by a band of thin nodular limestones composed princi- pally of myriads of the minute shells of Styliolina fissu- i ' ¢ GEOLOGY OF THE GENEVA-OVID QUADRANGLES 27 rella and containing many other species not found below that horizon. This calcareous band formerly known as the Styliola lime- stone was designated Genundewa limestone in New York State Museum bulletin 63, from its favorable exposure at Genundewa point on Canandaigua lake. : The layers of limestone do not appear on these quadrangles, their most eastern exposure being in a small ravine 2% miles south of the village of Gorham, Ontario co. but in their place a distinctly marked band of soft gray calcareous and fossiliferous shale is found that has at its base a row of large flattish concretions which in the cliffs south of Big Stream point on Seneca lake and a few other localities form a continuous layer of rather soft concretionary limestone. The formation emerges from the lake at Starkey point on the west side and Faucetts point on the east and is displayed in the cliffs toward the north with fallen concretions and blocks of the gray shale strewn along the beach beneath. It may be seen in the walls of Lodi glen and other ravines, and is accessible in the Lehigh Valley Railroad cut at Willard. It is covered by drift in the eastern part of the quadrangle. An anticlinal fold brings the concretionary limestone above the water south of Big Stream point (Glenora) 214 miles south of these quadrangles. This is the locality referred to by Professor Hall on page 214 of the Report of the Fourth Geological District under an erroneous impression that it was Tully limestone. This formation was described by Dr D. F. Lincoln on pages 99 and 100 of the Fourteenth Annual Report of the New York State Geologist and correlated as the base of the Portage group. The fossils collected by him from this gray band on Seneca lake were identified by Dr Clarke as follows: Manticoceras patersoni (Hall) Ambocoelia umbonata Hall Bactrites sp. Sp. cf. subumbona Gomphoceras cf. manes Hall Chonetes scitulus Hall Paleotrochus praecursor Clarke Liorhynchus mesacostalis Hall Pletrotomaria capillaria Conrad L. giobuliformis (Vanuxem) Loxonema noe Clarke Orthothetes sp. Loxonema var. Orbiculoidea lodensis (Vanuxem) Styliolina fissurella Hall Orbiculoidea, small form Buchiola retrostriata (v. Buch) Lingula spatulata Vanuxem Palaeoneilo muta Hall Cladochonus, abundant in the con- Pterochaenia fragilis (Hall) cretions Atrypa reticularis Linné 28 NEW YORK STATE MUSEUM West River shale Succeeding the Genundewa limestone horizon there is a heavy bed of dark and black shales referred to in the early reports as the upper beds of the Genesee shale. In Ontario county and westward there is a distinctive difference between the lower dark gray fos- siliferous and slightly calcareous shales and the densely black and bituminous shales of the upper part from which they are separated by a few feet of hard blue shales and thin flags. They become more homogeneous toward the east and although the difference is dis- cernible to the careful observer, on the west side of Seneca lake it is not very clearly defined and in the Cayuga lake valley is not recog- nizable. For this reason the dark shales that in this quadrangle lie between the Genundewa limestone horizon and the base of the Cashaqua are included in one division as West River shale so named from their abundant exposure in the West River valley in Yates county. The formation is well displayed in the ravine of Plum creek; along the lake shore at Starkey point and the cliffs at the south, near Fau- cetts point on the east side. of the lake and in nearly all of the ravines toward the north to Willard. Fossils are exceedingly rare in the upper and more bituminous beds and not at all common in the lower, from which the following species have been obtained: Bactrites aciculum Hall Lunulicardium curtum Hall Gephyroceras sp. Lingula spatulata Vanuxem Pleurotomaria rugulata Hall - Orbiculoidea lodensis (Vanuvem) Buchiola retrostriata (v. Buch) Liorhynchus quadricostatum (l’”an- Pterochaenia fragilis (Hall) uxem) Panenka sp. Melocrinus clarkei Williams Cashaqua shale This formation, which receives its name from its exposure along Cashaqua creek in Livingston county, is there a bed something more than 100 feet thick of light, soft, rather calcareous shale, suc- ceeding black shales and distinctly limited at the top by shales of a like bituminous character. In the Naples valley it is also distinctly differentiated from the shale below and above it, but is decidedly more arenaceous, containing at two horizons bands of sandstones and frequent flags. There is also interstratified in the upper part a thin stratum of limestone of a peculiar character and known as the Parrish limestone that may be easily traced with the black GEOLOGY OF THE GENEVA-OVID QUADRANGLES 29 Rhinestreet shale, that everywhere in the western part of the State caps the Cashaqua shale, into the Keuka lake valley in the southern part of which the limestone reaches its greatest development so far as it is exposed, but the black band of Rhinestreet shale is reduced in thickness to about 10 feet and the light shales intervening be- tween it and the limestone are also very much diminished. The Parrish limestone is recognizable in Big Stream ravine with the Rhinestreet shale 10 inches thick overlying it, the intervening shales having thinned entirely out. The only exposure of their horizon on this quadrangle on the west side of the lake is on Plum creek half a mile above Himrods. Neither limestone nor black shale appears here but a band of cal- careous olive shale containing many fossils indicates their place in the strata. . The proportion of sandy sediment in the Cashaqua beds is much greater in the upper part and increases toward the east and south to such an extent that only the lower beds conform strictly to the description of the Cashaqua shale as it appears in Cashaqua creek while the upper contains many flags and thick layers of hard blue gray sandstone some of which split into even flags while others are compact. Exposures at Starkey and North Hector show that with the incoming of the sandy sediments a gradual change in the fauna appeared, brachiopods which are not found in these beds in the Naples valley or farther west occurring in thin calcareous layers, and masses of the coral Cladochonus about 100 feet above the base of the formation. From this horizon upward through several hundred feet of shales and sandstones there are irregular alternations and combinations of the Naples and Ithaca faunas and toward the east a gradual segregation of the latter in the formation succeeding the Cashaqua. This formation is well exposed along Plum creek below and above Himrods, in the ravine and along the dugway roads east of Starkey, along the lake shore north of Glenora, and on the east side from the south line of the quadrangle to the north side of North Hector point, and in the ravines of Curry, Breakneck, Lodi, Tommy and Sixteen Falls creeks. The sandstones are exposed in old quarries in the western part of the village of Ovid and in the vicinity of Scott Corners. The Cashaqua shale is not a very fossiliferous formation but thin seams in which fossils are fairly common occur at all horizons. 30 NEW YORK STATE MUSEUM Bactrites aciculum (Hall), Probelocera selma Clarke, Pterochaenia fragilis (ball) and (iSitehweim retrostriata (von Buch) occur in the lower beds and in the shaly layers throughout the formation. A thin calcareous seam in a sandstone 125 feet above the base of the formation exposed by th side of the dugway road % mile east of Starkey station contains: Leptrostrophia mucronata (Con- Sp. laevis Hall rad ) Cladochonus Spirifer mucronatus Conrad var. Crinoid stems posterus Hall & Clarke The higher sandstones on Breackneck creek at North Hector an on Lodi creek contain in addition: Ambocoelia umbonata Hall Chonetes lepidus Hall Cyrtina sp. Honeoyea major Clarke Productella spinulicosta Hall and Liorhynchus quadricostatum Hall occurs in the sandstones at Ovid and several other species of brachiopods in the quarries in this horizon near the east line of the quadrangle. Rhinestreet shale In the region about the south end of Seneca lake and westward to Lake Erie this shale succeeds the Cashaqua shale with a thick- ness of 165 feet. It is represented on this quadrangle by 2 feet of black shale, in the ravine of Plum creek half a mile west of Him- rods. It appears at the Big-Stream ravine at Glenora, but is not recognized on the east side of the lake on these quadrangles. It is a well defined feature in the stratigraphy of western New York and is more fully described in Museum bulletins 63, 81 and ro1. Hatch shale and flags This formation is the stratigraphic equivalent of the lower Gardeau beds in the Genesee river section and consists of a series of shales and sandstones aggregating about 350 feet in thickness. The shales range from black to light blue and from hard sandy or slaty to soft and blocky, and there are frequent layers of hard blue sandstone from 2 inches to 2 feet in thickness occurring at irregular intervals, some of which are continuous for long distances without change of character or thickness, while others thin out or become shaly and disappear in a few rods. The lower beds of this formation are much softer than the upper Cashaqua beds and in : a MASP Saw V Ried ioe Berne GEOLOGY OF THE GENEVA-OVID QUADRANGLES 31 some parts bear a close resemblance to the olive and blue shales of the lower beds of that formation. The increase in the proportion of sand in the sedimentation toward the east so noticeable in the upper beds of the Cashaqua is also apparent in this formation though to a less degree. The gradual change in the character of the fauna in that di- rection is, however, still more marked. In the Genesee river section no fossils but those of the normal Portage or Naples fauna are found in these beds. At Naples near the top a thin seam shows remains of brachiopods broken and crushed beyond recognition but they do not occur below that hor- izon, while in this region vertical sections show frequent alterations of the normal Naples fauna and the brachiopodous Ithaca fauna of central New York; indication of oscillation between them in which the latter acquires predominance in the Cayuga lake valley but not to the exclusion of the former. Although this formation covers a large area on this quadrangle there are few satisfactory exposures and none that are favorable for an exhaustive collection of its fossils. The following species have been obtained from the Hatch shale and flags in the Seneca lake valley, mainly from the region south of this quadrangle: Manticoceras patersoni (Hall) Probeloceras lutheri Clarke Tornoceras uniangulare (Conrad) Orthoceras bebryx Hall Bactrites Styliolina fissurella Hall Bellerophon koeneni Clarke Loxonema noe Clarke - Spirifer laevis Hall Sp. mucronatus var. posterus Hall & Clarke Sp. subumbona Hall Productella speciosa Hall Schizophoria impressa (Hall) Atrypa reticularis Linné Centronella julia A. Winchell Chonetes scitulus Hall C. lepidus Hall Productella spinulicosta Hall Strophalosia truncata Hall Leptostrophia mucronata uxem) Buchiola retrostriata (v. Buch) Lingula spatulata Vanuxem Pterochaenia fragilis (Hall) Paracardium doris Hall Lunulicardium ornatum Hall Honeoyea erinacea Clarke Paleoneilo sp. Cladochonus (Van- Grimes sandstone This is a well defined arenaceous band easily recognized in the region west of these quadrangles as far as the Genesee river. It is made distinctive in the Naples and Dansville valleys by containing the lowest brachiopod faunule in the Portage section of that region. 32 NEW YORK STATE MUSEUM Data for its location on this map are derived principally from field work on the quadrangles at the south and west of this one, the few exposures here not being sufficient for its positive identifi- cation. Its position is approximately indicated on the map and its assigned thickness is 75 feet. West Hill (Gardeau) flags and shale Except that the proportion of sandstones in the shales is some- what greater and more uniformly distributed there is very little difference between the stratification of this formation and the West Hill beds below. They are, however, less fossiliferous. A few representatives of the Ithaca fauna are found in all parts as are also a small number of species common in the Naples fauna. Soft gray shales resembling the Cashaqua shale, exposed on Butcher hill, in the upper part of this formation, contain obscure goniatites, orthoceratites and Cladochonus, but no brachiopods. High Point sandstone This formation is important stratigraphically and economically in the Genesee river section. There it contains only fossils of the Portage fauna but is stratigraphically continuous with the High Point sandstones of the Naples section where it contains mainly brachiopods common in the Chemung fauna. It becomes shaly in some parts toward the east but can be traced at least as far as the region south of these quadrangles. There are here but small isolated exposures of its horizon in small ravines on the higher slopes of Butcher hill. Prattsburg sandstone-Wiscoy shale Chemung sandstone | The position of these formations at the crest of the high ridge between the Seneca lake and Cayuga lake valleys where there are no favorable exposures is indicated from data obtained on the Watkins quadrangle. For description of these higher beds and lists of fossils contained in then; see Museum bulletins 63, 81 and IOl. DIP The average dip of the rock strata on these quadrangles is ap- proximately 24 feet per mile toward the south and toward the west, the latter dip being caused mainly by the decrease in that aoe GEOLOGY OF THE GENEVA-OVID QUADRANGLES 33 direction of the thickness of nearly all of the formations repre- sented on the map. The amount of dip between different points is greatly affected, however, by the presence of a series of undula- tions or low anticlinal folds that render it exceedingly variable and in many cases reverse it. The color line on the map that indicates the position of the Tully limestone shows the irregularity of the dip in the direction of the shores of the lake and the larger undulation of the strata, to which attention has been directed in the description of that forma- tion. Variations in the western dip are less noticeable to the casual observer on account of their less favorable exposure in rugged and sinuous ravines away from the level lake which on the shore makes the smallest variation from the normal southern dip easily dis- cernible. Most of the larger ravines on both sides of the valley show a dip toward the lake, indicating that the location of the depression now partly occupied by the waters of Seneca lake was primarily determined by a synclinal fold of the rock strata extending in the same general direction as the present valley that was very greatly enlarged and deepened by subsequent erosion. At the following localities on the west side of the lake an east- ward dip is seen, at the falls of Wilson creek near the west line of the quadrangle and 3% miles south of Geneva it is 100 to 150 feet per mile; on Kashong creek the Tully limestone at the top of the falls dips toward the northeast at the rate of more than 100 feet per mile. On the Keuka outlet a sharp fold in the Tully limestone extending from northeast to southwest, has produced what is almost equivalent to a fault. The Tully limestone appears in the top of a conical hill 114 miles southwest from Dresden at 565 A. T. and again at about the same level at the mouth of Bruce gully. It is exposed along up the south side of the gorge to the Cascade mills where it produces a cascade. The bottom and sides of the gorge are covered for nearly a mile west to Seneca mills where the Tully reappears at the top of a second cascade 4o feet higher than at the Cascade mills. This curious phenomenon of a stream of water flowing over the same stratum of rock at two different levels is duplicated in the Great gully ravine 214 miles south of Union Springs, where a hard band of calcareous shale produces three cascades in a simi- lar manner. The situation is very similar except that but one fall occurs in the Bruce gully where the limestone is exposed in the 34 NEW YORK STATE MUSEUM bank 10 rods from the mouth at 550 A. T. It is covered for some distance up the ravine but occasional outcrops of the Moscow shale — show that it is nearly level to about 25 rods from the mouth above which the strata rise rapidly toward the south and west for 35 rods and then are nearly level for 15 rods to the falls where the lime- stone crosses the ravine at 595 A. T. or 45 feet higher than at the mouth. An exposure of Hamilton shale on the south side of Keuka out- let half a mile above Dresden shows a strong dip toward the lake. Exposures in the south side of Perry point show a northeast dip and the top of the Tully limestone is 120 feet higher in the Perry point ravine than at a point directly east on the opposite side of the lake. | | The apex of a fold crosses diagonally the ravine of Plum creek _ 34 mile from the lake. On the east side of the fold the strata descend toward the east at the rate of 150 feet or more per mile. On the west side there is a slight western dip for about half a mile when it is again reversed and is quite strong towara the lake. At the Severn arch the top of the Tully is 45 feet above | the lake level but.on the opposite side it is below it, showing an eastward dip of 20 feet or more per mile. At the south end of the lake the strata on the east side are about 25 feet lower than on the west. Exposures are not favorable to the measurement of dip on the east side in the southern part of the quadrangle, but in the Lodi glen the Tully limestone shows :a western dip of 150 feet per mile, and the other ravines in this vicinity show that this steep dip toward the lake continues for at least 8 miles and that some of the apparent undulations of the limestones are caused by sinuosities in the line of outcrop. A western dip of more than 200 feet per mile is noticeable in the quarries and roadside CPO in the western part of the village of Ovid. On the east side of the ridge the eastward dip toward Cayuga lake is shown in the ravines east of Hayt Corners and in the Big | Hollow creek and other ravines farther north. On the opposite — side of the lake conditions are much like those on Seneca lake, the western dip being increased to many times the average. The diagram accompanying the map is designed to show highly | Gpeegated the variations in the dip along the east and west line of — 42° 40’ across the Ovid and Genoa quadrangles, a distance of 26 | miles. aad OF THE GENEVA-OVID QU.\DRANGLES 35 G ial striae may be seen on the exposed surface of the Tully nestone at many places and also on the higher sandstones. Much e flagging about the village of North Hector is finely striated a most remarkable display of groovings and striations may be on the surface of the flag walk 80 feet long by 6 feet wide in tae IB JB ovp,< 1opteria decussata, 20. Camillus, &. jatite limestone I5. Camillus shale, 5, 7-8. tes goldfussi, 21. Canandaigua lake, 21, 22, 27. coelia praeumbona, 20. Canandaigua shales, 18, 10. bonata, 18, 20, 30. : Canoga, 13, 14. cf. subumbona, 27. Cardiff shale, 6, 14, 15-16, 17. exus hamiltoniae, 21. Cascade mills, 24, 26, 33. ellites, I9. Cashaqua creek, 28. is spiriferoides, 20. Cashaqua shale, 6, 28-30, 32, 35. reticularis, 20, 27, 3I. Cauda-galli grit, 12. lopecten princeps, 20. Cayuga county, 10, 14. ee Cayuga lake, 17, 22, 34. trites, 31. Cayuga lake valley, 5, 28, 31, 32. 27, Cayugan, 7. culum, 26, 28, 30. Cement rock, 8. licinctus, I9. Centerfield, 18. num Creek ravine, 25. Centerfield limestone, 18. limestones, 18. Centronella julia, 31. ophon acutilira, 19. Cephalopods, to. eni, 31. Ceratiocaris acuminata, 9. Chautauquan, 6. i Chemung sandstone, 6, 32. ie waterlime, 7, 8-0. Chenango county, 23. Hollow creek, 17, 18, 34. Chert, 13. ‘Stream point, 27. Chonetes carinatus, 20. Stream ravine, 20, 30. deflectus, 20. k brook, 7. : lepidus, 15, 20, 30, 31. k creek, 7. mucronatus, 15, 16. - shale, 25, 26. scitulus, 16, 20, 27, 31. er creek, 19. . Setiger, 18. mer falls, 21. Chonostrophia complanata, 11. pods, 18, 20, 31. Cladochonus, 27, 30, 31, 32. ck creek, 29, 30. @latke; J, M: cited, 12,/18, 21,.27: s gully, 23, 24, 33. Cobleskill limestone, 11. iola halli, 20. Cobleskill waterlime, 7, 9. trostriata, 27, 28, 30, 31. Conocardium crassifrons, 20. Bre a VI; Corals, 18, 20-21. ill, 32. ‘ Corniferous limerock, 12. Corniferous limestone, 11-12. toechia congregata, 20 ’ | Cornitiferous limerock, 11. oe Cornulites mitella, 19. fordi, 20. tribulis, 19. a, 20. Crania crenistria, 20. 16, 20. Craniella hamiltoniae, 20. 38 NEW YORK STATE MUSEUM Crinoids, 20, 30. Crustaceans, 19. Cryphaeus boothi, 16. Cryptonella planirostris, 20. rectirostris, 20. Curry creek, 20. Cyathophyllum conatum, 20. hydraulicum, 0. nanum, 20. robustum, 20. Cyclonema hamiltoniae, 20. multilira, 20. Cyclorhina nobilis, 20. Cyphaspis craspedota, 19. ornata, I9. ornata var. baccata, 19. Cypricardinia indenta, 20. Cyrtina sp., 30. hamiltonensis, 20. Cystiphyllum americanum, 20. conifolle, 20. varians, 20. Dalmanites boothi, Io. var. callitetes, 10. Dansville valley, 31. Devonic, I0. Dey landing, 17, 18, 10. Diaphorostoma lineatum, 20. Dip, 32-35. Dolatocrinus glyptus, 20. liratus, 20. Douvillina inequistriata, see Stroph- eodonta (Douvillina) inequis- Eniataes Dresden Om 22etessnad. Eaton, Amos, cited, It. Encrinal limestone, 21. Erian, 6. Estheria pulex, 10. Eunella lincklaeni, 20. Eunicites, 10. Eurypterus, I0. Fall creek, 19, 25. Faucetts point, 26, 27, 28. Favosites arbusculus, 21. argus, 21. Favosites niagarensis, 9. placenta, 21. Fayette, 16, 17, 18. IMlkome Ciesels, Wil, Tl, Frontenac island, o. Gardeau flags and shale, 30, 32. Gas-bearing rocks, 16. Gastropods, 10. Genesee river section, 25, 30, 31, 32. Genesee shale, 6, 23, 25-26. Geneseo, 25. Geneva, 13, 33: Genoa quadrangle, 34. Genundewa limestone, 6, 25, 26-27, 28. Genundewa point, 27. Gephyroceras sp., 28. Glenora, 27, 29, 30. Gomphoceras cf. manes, 27. Goniatites, 32. Goniophora acuta, 20. Gorham, 23, 27. Grammysia arcuata, 20. Great gully ravine, 33. Grimes sandstone, 6, 31-32. Gypsum, 7, 8. Hall; Jamies, cited, 6, 11, 125g Pit A 2S. Vr Halysites catenulatus, 9. Hamilton, 18. Hamilton group, 16, 17. Hamilton shale, 34. Hatch shale and flags, 6, 30-31. Hayt Corners, 17, 10, 2t22meen 25, 26, 34. Helderberg group, upper, 12. Helderbergian series, 10. Heliophyllum confluens, 21. halli, 21. irregulare, 21. obconicum, 21. reflexum, 21. Herkimer county, 8. High Point sandstone, 6, 32. Himrods, 209, 30. Hipparionys proximus, 10. Homalonotus dekayi, 16. Honeoyea erinacea, 31. major, 30. Hornstone, 13. Hyolithus aclis, ro. Hypothyris cuboides, 25. Ilionia sinuata, 0. Indian creek, 19, 22. Ithaca fauna, 29, 31. Johnson quarry, 24. Kendaia creek, 109. Kendig creek, 15, 16, 18. Keuka lake valley, 29. Keuka outlet, 23, 24, 26, 33, 34. Kuneytown, 14. Lake Erie, 30. Lamellibranchs, 20. Lamoreaux landing, 26. Leperditia alta, 8, 9, 10. scalaris, 9, Io. Leptostrophia mucronata, 30, 31. perplana, 20. Bancoln, 1D. F., cited, 6, 18, 27: Lingula densa, 20. leana, 20. Spaitilata, 20, 27, 28, 31. Liorhynchus globuliformis, 27. limitare, 15, 16, 18. mesacostalis, 27. multicosta, 15, 20. Little point, 25. Livingston county, 15. Lodi creek, 24, 26, 29, 30. Lodi glen, 23-24, 27, 34. Loxonema var., 27. delphicola, 19. hamiltoniae, 19. noe, 27, 31. Ludlowville shale, 6, 17, 18-21. Lunulicardium curtum, 18, 28. multicosta, 18. ornatum, 31. _ Lyriopecten orbiculatus, 21. Mac Dougal, 18. Kashong creek, 19, 22, 23, 24, 33. quadricostatum, 20, 26, 28, 30. INDEX TO GEOLOGY OF GENEVA-OVID QUADRANGLES 39 Mc Quan quarry, 9, Io, 13. Macrochilus hebe, 20. Macrodon hamiltoniae, 20. Madison county, 22. Manlius limestone, 7, 10. Manticoceras patersoni, 27, 31. Marcellus, 15. Marcellus shale, 6, 14-15, 16, 17, 25. upper, 14, 15. Megistocrinus ontario, 20. Melocrinus clarkei, 28. Meristella haskinsi, 20. Micredon bellistriatus, 20. Miller point, 23, 24, 26. Modiella pygmaea, 20. Modiomorpha concentrica, 20. macilenta, 20. mytiloides, 20. Moscow, 22. Moscow shale, 6, 21, 22-23, 34. Murchisonia micula, 20. Mytilarca oviformis, 20. Naples, 31. - Naples fauna, 29, 31. Naples valley, 28, 31, 32. Nautilus liratus, Io. Nichols Corners, 7. North Hector, 29, 30, 35. Nucleospira concinna, 20. Nucleocrinus lucina, 20. Nuculites oblongatus, 15, 18, 20. Oenonites, 109. Onondaga county, 10, 14, 22. Onondaga limestone, 6, 10, II-I4, 15, 23; fauna, 14. Onondaga salt group, 12. Onondaga valley, 18. Ontaric, 7. Ontario county, 15, 16, 26, 28. Orbiculoidea, 9, 27. lodensis, 26, 27, 28. minuta, 16. Oriskanian, 6. Oriskany sandstone, 6, 10-11. Orthoceras. bebryx, 31. coelamen, 21. crotalum, 19. 40 NEW YORK STATE MUSEUM Orthoceras exile, 19, 21. Portland cement, 23. nuntium, 19. Prattsburg sandstone, 32. subulatum, 15, 16. Prattsburg shale, 6. Orthoceratites, 32. . | Probeloceras lutheri, 26, 30, 31. Orthothetes sp., 27. -roductella navicella, 20. arctostriatus, 20. speciosa, 31. pandora, 20. spinulicosta, 16, 20, 30, 31. Ostrocodes, 19. tullia, 20. Ovid, 24, 26, 29, 30, 34. Froetus macrocephalus, 19. rowl, Io. Paleoneilo sp., 31. | Pterochaenia fragilis, 16, 26, 27, 28, constricta, 20. BO, Bs emarginata, 20. Pteropods, 10. fecunda, 20. : muta, 27. Reeder creek, 17, 18. plana, 20. Rensselaeria ovoides, 11. tenuistriata, 20. Rhinestreet shale, 6, 29, 30. Palaeotrochus praecursor, 27.. Rhipidomella penelope, 20. Panenka sp., 28. vanuxemi, 20. — Paracardium doris, 31. Rhynchonella venustula, 25. Parazyga hirsuta, 20. Road metal, 23. Parrish limestone, 28, 29. Romulus, 18. Pentamerella pavilionensis, 20. , Romulus road, 14, 15, 16. Perry point, 23, 24, 34. Rondout waterlime, 7, 9-10. Phacops) ranay LO 1S. LO me iaene Rorison quarry, 14. Phelps, It. Pholidostrophia nacrea, 20. Schizodiscus capsa, 19. Platyceras attenuatum, 19. Schizophoria impressa, 31. bucculentum, 10. Schoharie grit, 12. carinatum, 10. Schuchert, cited, 12, 21. conicum, 19. Scott Corners, 20. echinatum,, 19. i Seneca county, 14, 21. erectum, 19. Seneca Falls, 8, 9, 10. subspinosum, 10. Seneca lake, 5, 15, 10, 17, mQseemem symmetricum, I9. 28, BOW haa eee thetis, 10. Platycrinus eboraceus, 20. Pleurodictyum stylopora, 21. — Pleurotomaria capillaria, 16, 19, 27. disjuncta, 10. itys, 16, 10. lucina, 10. rugulata, 15, 16, 18, 26, 28. sulcomarginata, 16. Seneca limestone, 11, 12. Seneca mulls, 24, 33. Seneca river, 8, 13. Senecan, 6, 12. Severn arch, 34. Severne point, 24. Siluiiew 7. Siluric waterlimes, 10. trilex, 10. Simpson creek, 23, 24. Plum creek, 26, 28, 29, 30, 34. Sixteen Falls creek, 29. Plum point, 24. Skaneateles lake, 16. Portage fauna, 31 Skaneateles shale, 6, 16-18. Portage group, 27. South Waterloo, 13. INDEX TO GEOLOGY OF GENEVA-OVID QUADRANGLES Al Spirifer angustus, 20. arenosus, IO-IT. audaculus, 16, 20. consobrinus, 20. crispus var. corallinensis, 9. divaricatus, 20. fimbriatus, 16, 20. granulosus, 20, 21. laevis, 30, 31. marcyi, 20. mucronatus, 18, 20, 21. var. posterus, 30, 31. murchisoni, II. subumbona, 31. vanuxemi, 10. Spirorbis angulatus, 10. Stafford limestone, 14, 15, 16. Starkey, 20. Starkey point, 26, 27, 28. ‘Straparollus rudis, 20. Striatopora limbata, 21. Stromatopora, 9. Stromatopora concentrica, 9. Strophalosia truncata, 15, 16, 31. Stropheodonta concava, 20. deniissa, 20. (Douvillina) inequistriata, 20. junia, 20. varistriata, 9, 10. Styliola limestone, 25, 27. Stvliolina fissurella, 15, 16, 18, 109, 20-275 31h Thomas Brothers quarry, 14. Tichenor limestone, 6, 19, 21-22. Tichencr point, 2t. Tommy creek, 29. Tornoceras discoideum, 16. uniangulare, 19, 31. Trigeria lepida, 20. Trochoceras gebhardi, 9. Tropidoleptus carinatus, 20. Tully, 23. Tully limestone, 6, 16, 22, 22-25, 26, 27, 33;-34, 35- Turrilepas devonica, 10. foliata, 10. nitidula, ro. squama, 19. tenera, 19: Tyre, 7. Ulsterian, 6. Union Springs, 9, 10, 15, 33. Upper black shale, 25. Vanuxem, cited, I1, 12, 14, 16, 23 Varick station, 17. Vernon shales, 5, 7. Waterloo, 13, 14, 15, 16. Watkins quadrangle, 32. West Hill (Gardeau) flags and shale, 6, 32. West River shale, 6, 28-30. West River valley, 28. Whitfieldella sulcata, 9. Willard, 22, 23, 24, 26, 27, 28. Wilson’s creek, 17, 18, 33. Wiscoy shale, 32. Zaphrentis halli, 20. simplex, 20. t ty en 1 7 hs * 0 ba eae oe } : HC ae hot 4 ‘ } " ‘ ‘9 ib . i 1 ae 3 ; La a iy re fs A a ot i “ z , 4 fe ' |} 4 7 } , f a . | | . : . 1 a; ae : a s 5 j | ‘ | : a eo = ‘ SSUES a 7 aed New York State Education Department New York State Museum Joun M. Criarxke, Director PUBLICATIONS Packages will be sent prepaid except when distance or weight renders the same impracticable. On 10 or more copies of any one publication 20% discount will be given. Editions printed are only large enough to meet special claims and probable sales. When the saie copies are exhausted, the price for the few reserve copies is advanced to that charged by second- hand booksellers, in order to limit their distribution to cases of special need. Such prices are inclosed in[]. 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Wa Rigo 102 Gizln Wo tig IG HORS S72 View2 106 rie io 285 fol 2 107 S77, Vay Te Die OS 58, v. 3 Iog,IIO ish, WA on Take 58, v. 2 II2 58, Vv. 5 113 58, Vv. 4 It4 58, Vy 3 115 58, Vv. 4 r16 58, 58, 58, 58, 58, 59, 59, 59, 59, 59, 59, 60, 60, Fo, 60, 60, 60, 60, 60, 60, Vig SSSR cl Meche hisciedl 3) Soh cl esi acer atisslig HNHWHKRHWNHHNANHNMNERNW Bulletin Report I1l7 60, V. 3 118 60, V. I IIQ OTe Viens 120 OT, Wek I2r Gr Svea m22 Ole 13 Gre lve 124 65,5Nn 2 . Memoir 2 49, V. 3 Smeal Ra we 2 5 Os Sin Mens 7 57,V.4 &, ptr 590, viens 8, pt2 59,Vv- 4 9 60, Vv. 4 10 60, Vv. S II (ATES Wo) +. MUSEUM PUBLICATIONS The figures at the beginning of each entry in the following list, indicate its number as a museum bulletin... Geology. 14 Kemp, J. F. Geology of Moriah and Westport Townships, Essex Co. N. Y., with notes on the iron mines. 38p. il. 7pl. 2 maps. Sept. 1895. Free. 19 Merrill, F. J. H. Guide to the Study of the Geological Collections of the New York State Museum. 164p. 119pl. map. Nov. 1898. Out of print. 21 Kemp, J. F. Geology of the Lake Placid Region. 24p.1pl.map. Sept. 1898. Free. 48 Woodworth, J. B. Pleistocene Geology of Nassau County and Borough of Queens. s8p. il. Spl. map: Dec. r90r. 25¢c. 56 Merrill, F. J. H. Description of the State Geologic Map of 1901. 42p. 2 maps, tab. Nov. 1902. Free. 77 Cushing, H. P. Geology of the Vicinity of Little Falls, Herkimer Co. g8p. il. r5pl. 2 maps. Jan. 1905. 3oc. 83 Woodworth, J.B. Pleistocene Geology of the Mooers Quadrangle. 62p. 25pl. map. June MOOSE ESC: Ancient Water Levels of the Champlain and Hudson Valleys. 206p. il. r1pl.18 maps. July 1905. 45c. 95 Cushing, H. P. Geology of the Northern Adirondack Region. 188p. 15pl.3 maps. Sept. 1905. 3oc. 96 Ogilvie, I. H. Geology of the Paradox Lake Quadrangle. sap. il. r7pl. map. Dec. 1905. 3o0c. 106 Fairchild, H. L. Glacial Waters in the Erie Basin. 88p. 14pl. 9 maps. Feb. 1907. Out of print. 107 Woodworth, J. B.; Hartnagel. C. A.; Whitlock, H. P.; Hudson, G. H.; Clarke; J. M.; White, David; Berkey, CxP. Geological Papers. 388p. 54pl. map. May 1907. 9g0C, cloth. Contents: Woodworth, J. B. Postglacial Faults of Eastern New York. Hartnagel, C. A. Stratigraphic Relations of the Oneida Conglomerate. Upper Siluric and Lower Devonic Formations of the Skunnemunk Mountain Region. Whitlock, H. P. Minerals from Lyon Mountain, Clinton Co. Hudson, G. H. On Some Pelmatozoa from the Chazy Limestone of New York. Clarke, af M. Some New Devonic Fossils. An Interesting Style of Sand-filled Vein. —— Eurypterus Shales of the Shawangunk Mountains in Eastern New York. White, David. A Remarkable Fossil Tree Trunk from the Middle Devonic of New York. Berkey, C. P. Structural and: Stratigraphic Features of the Basal Gneisses of the Highlands. rizr Fairchild, H. L. Drumlins of New York. 6op. 28pl. 19 maps. July 1907. Out of print. 115 Cushing, H. P. ey of the Long Lake Quadrangle. 88p. 2opl. map. Sept. 1907. 126 Miller, W. J. 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Natural history of New York. 3ov. iJ. pl. maps. Q. pany 1842-94. DIVISION 1 zooLoGy. De Kay, James EB Zoology of New York; or, The New York Fauna; comprising detailed descriptions of all the animals hitherto observed within the State of New York with brief notices of those occasionally found near its borders, and accompanied by appropri- ate illustrations. 5v.il.pl. maps. sq.Q. Albany 1842-44. Out of print. Historical introduction to the series by Gov W. H. Seward. 178p. NEW YORK STATE EDUCATION DEPARTMENT v. 1 ptr Mammalia. 131+46p. 33pl. 1842. 309 copies with hand-colored plates. v. 2 pt2 Birds. 12+380p. r141pl. 1844. Colored piates. v. 3 pt3 Reptiles and Amphibia. 7+98p. ptq Fishes. 15+4rsp. 1842. pt3-4 bound together. We ete to accompany v. 3. Reptiles and Amphibia 23p]. Fishes 7p). 1342. 300 copies with haud-colored plates. v. 5 pts Mollusca. 4+271p. gopl. pt6 Crustacea. 7op. r3pl. 1843-44. Hand-colored plates; pts5—6 bound together. DIVISION 2 BOTANY. ‘Torrey, John. 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Economic and Geologic Map of the State of New York; issued as part of Museum bulletin 15 and 48th Museum Report, v. 1. 59x67 cm. 1894. Scale 14 miles to 1 inch. 15c¢ Map of the State of New York Showing the Location of Quarries of Stone Used for Building and Road Metal. Mus. bul. 17. 1897. Free. Map of the State of New York Showing the Distribution of the Rocks Most Useful for Road Metal. Mus. bul. 17. 1897. Free. —— Geologic Map of New York. roor. Scale 5 miles to 1 inch. Jn atlas form $3; mounted on rollers $5. Lower Hudson sheet 6oc. The lower Hudson sheet, geologically colored, comprises Rockland, Orange, Dutchess, Put- nam, Westchester, New York, Richmond, Kings, Queens and Nassau counties, and parts of Sullivan, Ulster and Suffolk counties; also northeastern New Jersey and part of western Connecticut. Map of New York Showing the Surface Configuration and Water Sheds. 1901. Scale +2 miles to 1 inch. 15c. Map of the State of New York Showing the Location of its Economic Deposits. 1904. Scale 12 miles to 1 inch. 15¢c. Geology maps on the United States Geological Survey topographic base; scale 1 in. —= 1m, Those marked with an asterisk have also been pub- lished separately. : *Albany county. Mus. rep’t 49, v 2. 1898. Out of print. . Area around Lake Placid. Mus. bul. 21. 1898 Vicinity of Frankfort Hill [parts of Herkimer and Oneida counties]. Mus, TEOitE Ske eV. ke LOOG. Rockland county. State geol. rep’t 18. 1899. NEW YORK STATE EDUCATION DEPARTMENT Gere Amsterdam quadrangle. Mus. bul. 34. tgoo. *Parts of Albany and Rensselaer counties. Mus. bul. 42. 1o01. Free. *Niagara river. Mus. bul. 45. 1901. 25¢. Part of Clinton county. State geol. rep’t 19. rgor. Oyster Bay and Hempstead quadrangles on Long Island. Mus. bul. 48. IQOt. Portions of Clinton and Essex counties. Mus. bul. 52. 1902. Part of town of Northumberland, Saratoga co. State geol. rep’t 21. 1903. Union Springs. Cayuga county and vicinity. Mus bul. 69. 1902. *Olean quadrangle. Mus. bul. 69. 10903. Free. *Becraft Mt with 2 sheets of sections. (Scale 1 in. =- 4m.) Mus. bul. 69. 1903" | 20C: *Canandaigua-Naples quadrangles. Mus. bul. 63. 1904. 200. *Little Falls quadrangle. Mus. bul. 77. 1905. 15€¢. *Watkins-Elmira quadrangles. Mus. bul. 81. 1905. 20¢. *Tully quadrangle. Mus. bul. 82. ro905. Free. *Salamanca quadrangle. Mus. bul. 80. 1905. Free. . *Buffalo quadrangle. Mus. bul. 99. 1906. Free. *Penn Yan-Hammondsport quadrangles. Mus. bul. ror. 1906. 20¢. *Rochester and Ontario Beach quadrangles. Mus. bul. 114. 20¢. *Long Lake quadrangles. Mus. bul. 115. Free. *Nunda-Portage quadrangles. Mus, bul. 118. 200. *Remsen quadrangle. Mus. bul. 126. 1908. Free. 1 ES Aik KE ] 42° 40°N EDUCATION DEPARTMENT JOHN M. 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