Field Notebook: Texas 1957a
Page 40
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Transcription
(30) 4) covered 7' black to bluish shale in lower part. 5) LS, single yellow-brown weathering, upper 1/2" sandy and organic fragmental. Flat bedding plane on top. Bryozoa, jawlines, crinoids common on upper surface. Collection 6/30/57/4 3 1/2' 6) Covered, <1/4' one or two 4" to 6" brown weathering sandstones are probably interbedded in a shale (gray?) 7) LS, conglomerate rubble at base grading upward into organic fragmental and finally a sand layer (well laminated) in the uppermost 3 to 4". There is apparently a shale parting between the rubble-conglomerate portion and the organic fragmental-sand portions. Typical fest top bedding plane. (6'?) 6/30/57/7 collection 6/30/57/6 (shale parting) collection 6/30/57/5 covered 8) 2'-2" which the lower 1 1/8" is a rubble of crinoid parts - upper 3" fine grained, laminated sandstone (CaCO3 + much silification) - 9 1" shale parting separates this litho. 9) a) shale gray - grading into crinoid clotching and 1" diam pebbles which forms a rubble - 2 1/2' b) Repetition of 9a 1 1/2' followed by shale parting 1" c) fine calcimine grading upward into a coarse ss, laminated flat upper surface 2'. (31) 9 7+1/57/9 8 6/30/57/4 6/30/57/8