Field Notebook: Texas 1957b
Page 199
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Transcription
74 12 [crossed out] Calcareudite, gray to dark gray ls pebbles; some as large as 8"-10" diam.; little chert material except as sand-size particles. 20' 13[75]) Conglr., brown weathering, locally the chert + quartzite dominants over ls pebbles. The change from 14 to 15 is rather abrupt here even for Congl. lenses. Masure, 28' in 4" to 6" beds. 14 X[76]) like #13, -here again % chert/limestone is quite abrupt. 19' 15 [77]) like "15, but in 2' to 3' beds, more sandstone lenses (50% y unit). 18', upper is a gray quartz sandstone with about 10% chert pebbles. 8/26/57/8 16 [78]) Sandstone; brown weathering, 6"-2' -beds, some chert pebbles but quite few; wellsorted, mud to fine grained quartz shudings 20' 39a 39b [illegible] 8/24/57/9 17 [79]) Dolostone, brownish-gray, 6" to 1' beds, Sandy to silty throughout. once had a rich fauna but have be replaced by dolom 40' some chert pebbles 1/2" to 1" dia 18 [80]) ls, somewhat altered, dark gray to light gray. 2'-beds 8/[illegible] 26/57/9