Field Notebook: Texas, Oklahoma 1919
Page 69
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Transcription
The Coy measured the depth as 89 fath and my section is a little more, viz 97 feet. The section descending is as follows:—[All of this section is below the main promontory of Rough Creek] Top at road side not seen. Thin and thick bedded hard blue li, interbedded with grit towards the bottom. The limestone become more and more shaly upwards. About 40 feet. Heavy bedded slight shale and coarse bedded finer grained sandstone, ferruginous stained. About 30 feet. Coarse grits partly of dark to black hard shales. 10 feet. Limestone conglomeration apparently of intrusive volcanic character. Due small sample. The pebbles are fairly well rounded and ce- cemented by limestone, up to 4 inches long interspaces from 1 to 2 inches. Large prints are seen, like large crinoid columns, bryozoa, and Productus. Gone 2 feet thick. Dark blue earthy or water lime like limestone in con- crete form 4 to 8 inches thick. Has many scattering fossils and all Phare are from this grit. Thickness about 12 feet. Shale grit. Part seen or just expressive. Possibly an olig shale. Thickness about 40 feet. Blue crinoidal limestone replete with crinoidal column- nals and other parts, 8 to 10 inches thick. Above it 2 or 3 lime- stones in thickness that together make 12 to 24 inches. Lower shale grit. Coarse sand coarse grit not sure of character About 30 feet thick. Possibly olign shale.