Eleventh annual report of the United States Geological and Geographical Survey of the Territories : embracing Idaho and Wyoming : being a report of progress of the exploration for the year 1877 . eddish shales and indurated layers, exposed in saddle and ravinenorth of Station XL. 20. Tough gray sandstone, dark brown stained on exposed surfaces,with obscure indeterminate Lamelli branch. Dip 44°, S. 50° W. 21. Gray and rusty indurated layers. 22. Hard, gray, rusty-buff weathered sandstone. 23. Gray limestone, thickness of 10 feet exx> Drab indurated arenaceous shales. 24&. Eed shales
Eleventh annual report of the United States Geological and Geographical Survey of the Territories : embracing Idaho and Wyoming : being a report of progress of the exploration for the year 1877 . eddish shales and indurated layers, exposed in saddle and ravinenorth of Station XL. 20. Tough gray sandstone, dark brown stained on exposed surfaces,with obscure indeterminate Lamelli branch. Dip 44°, S. 50° W. 21. Gray and rusty indurated layers. 22. Hard, gray, rusty-buff weathered sandstone. 23. Gray limestone, thickness of 10 feet exx> Drab indurated arenaceous shales. 24&. Eed shales. 24c. Deep red arenaceous shales and indurated layers forming a prom-inent belt of brilliant red exposures inthe north slope of the mountain. 25. Hard, pale red or pink, sandstone, 75 feet, more or less. 26. Eeddish shales. 27. Grayish or dark drab, in places buff-mottled, spar-seamed, frag-mentary limestone, forming a heavy ledge, 40 feet or more in thickness,in crest of Station XL ridge; dip 40°, S. 50° W. This ledge containsa few imperfectly preserved fossils, among which are recognized crinoidalfragments which may prove to be Pentacrinites, a largish smooth Lamelli -ar*» st. john.] section in pierees mountains. 427 branch which, but for its greater convexity, resembles Camptonectes,and a small indeterminate Drab shaly limestone. 29. Dark chocolate-colored shales. 30. Mainly light drab, indurated, marly shales, with thin bands ofdrab shaly limestone, forms a heavy deposit. A small Gryplwa (G. Col-ceola ?) occurs in great abundance in the middle and upper part of thebed. 31. Hard, indiirated grit bed, 5 to 10 feet. 32. Chocolate-mottled indurated deposit, 30 to 50 feet. 33. Dark blue and gray, laminated, gritty limestone, a heavy bed, 20to 40 feet. Dip 37°, S. 45° W. 34. Unexposed space, toward top light drab deposit. 35. Dark and light gray, very hard sandstone, overlaid by dark blu-ish-gray very hard gritty layers. 36. Dark and buff gray coarse-g
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