Field Notebook: Texas 1957b
Page 135
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Transcription
(14) 14) Sandstone, mid-brown, very silty, 5' 15) Calcarenite, med to coarse-grained, dark gray weathering; feldspar more or less altered. 2' Coll. 8/6/57/4 16) Sandstone + siltstone; light to light orange/brown weathering. 19' 17) Calcarenite and fine chert + quartzite coarse pebbles, byzozoa of many shapes & sizes; -spongy?-), a few small brachiopods, crinoid stem segments. All looks a little littered. 2' 18) Covered, 29', probably mostly brown sand-siltstone. (Coll. 8/6/57/6 float) 19) Like #17, 6" 20) Sandstone and siltstone, brown weathering, 24' (Coll. 8/6/57/6 front probably) 21) Calcarenite, f.s. grains, and gray weathering; very quartzic in spots; Siliceous bands, 1/2" common, 4'-4 1/2' (15) 22) Sandstone and siltstone, light-brown weathering, 1/6" lamination/laminulae, 31' This is topped by a fine-grained calcarenite, 6" to 8" thick; has a 1/4" siliceous rich mangy flat top. 23) Conglois med brown weathering; up to 5" diam. cobbles in middle unit. Bottom and top fines (1" or less); top is gradational with a well laminated brown mud-sandstone, well-cemented (silicous + calcic) about 2" thick; total 3 1/2' 24) Sandstone, #4, brown, 1/6" lamulae, prone & friable. 1 1/2' 25) Calcarenite, orange-brown weathering, dark gray to dark-brown fresh; med to coarse grain size; Crinoid stems very rare, byzozoa, broken brachiopod plates; 8" 26) Sandstone, very silty; dark greenish gray. 1 1/2'