. Annual report. 1st-12th, 1867-1878. Geology. GEOLOGICAL SURVEY OF THE TERRITORIES. 451 w Q SECTION OF THE ROCKS EXPOSED ON SULPHUR CREEK, NEAR BEAR RIVER, WYOMING. 1 Ft. In. No. 1.—Black sliale, only seen in bottom of Sul- phur Creek, thickness unknown. No. 2.—Slope apparently occupied by clays, -* thickness perhaps 100 feet or more 100 0 , No. 3.—Soft light grayish sandstone, nearly Yertical DO 0 "«, No. 4.—CoYered space, "probably occupied by clays, but showing some sandstone that may or may not be in place; perhaps room enough for 250 to oOO feet 300 0 <^ No. 5.—Two or three
. Annual report. 1st-12th, 1867-1878. Geology. GEOLOGICAL SURVEY OF THE TERRITORIES. 451 w Q SECTION OF THE ROCKS EXPOSED ON SULPHUR CREEK, NEAR BEAR RIVER, WYOMING. 1 Ft. In. No. 1.—Black sliale, only seen in bottom of Sul- phur Creek, thickness unknown. No. 2.—Slope apparently occupied by clays, -* thickness perhaps 100 feet or more 100 0 , No. 3.—Soft light grayish sandstone, nearly Yertical DO 0 "«, No. 4.—CoYered space, "probably occupied by clays, but showing some sandstone that may or may not be in place; perhaps room enough for 250 to oOO feet 300 0 <^ No. 5.—Two or three rather heavy beds of light yellowish gray sandstone, separated by • ~ clays, probably occupying some of the space included in division 4. Near the lower part ~ two layers 15 to 18 inches each, of sand- stone, containing Ostrea solenisciis, Trap- 2 eziuni micronema, &c. Altogether 90 to 100 or more ' 100 0 No. 6.—Greenish and bluish gray sandy clays, :2 with some dark shale at places 100 0 No. 7.—Bed of good coal, said to be 7J feet in thickness T 7 6 2; No. 8.—Heavy massive bed of light colored 2 sandstone, about 90 feet in thickness, staud- H ing nearly vertical, with some 3 to 5 feet ~ of sandy clay between it and the coal of division 7 95 0 ^ No. 9.—Gray sandy shales with alternations of sandstone and clays 255 0 o No. 10.—Light gray sandstone 20 0 sNo. 11.—Slope and unexposed space, perhaps g3 200 yards or more across. ^ No. 12.—Light gray sandstones and clays, in- " eluding a bed of good coal, said to be 7^ feet in thickness; all dipping south-south- east 550 below horizon ; and th^ sandstone '"' above the coal containing many casts, Inoc- eramus proMematiciis, with a few casts of C«n?iMm and undetermined univalves; al- .^ together showing about 150 0 ?' No. 13.—A valley or depression showing no rocks, perhaps 150 yards across. No. 14.—Ferruginous sandstone in thin layers, dipping north-west about 80° below "hori- zon 40
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