Field Notebook: Texas 1957a
Page 82
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
72 Section 8a runs up a small slope. The various angles of bedding and covered intervals between these outcrops are suggestive of some structural disturbance. Section 8b began on what I believe is Bed 7 of 8a 8) 69' covered. 9) Sandstone, poorly indurated, v. fine sand size, some silt, well sorted however. CaCO3 as common as sand grains - greenish gray & yellow. 36' 1"-3" beds. 10) LS., nodular uneven bedding, 3" to 6" beds Collection 7/9/57/10 3' above line 38' (See page 21) Collection 7/9/57/11 15' above line. 11) Siltstone, pebbly, yellow weathering, same sand as on more pebble than silt! 15' poorly cemented 12) Siltstone with pebbles - Silicious cement 2' 73 Section 26 13) Shale and siltstone (10') green gray colours, 2 6" welded siltstones (silicious) area fog. 14) Sandstone, very fine to fine grained, silicious cement 2' 15) Shale 9' green-gray "bumpy", mostly covered 16) Siltstone w/ Silicious cement, 6" to 2' beds - 2" to 6" shale or silt partings. buff coloured. 11' 17) Shale (some siltstone), fine beds 6" to 1', silicious siltstone, in 4" layers 10' Collection 7/9/57/12 18) Covered 26' 19) Siltstone, silicious buff - [2'] 20) LS, yellow weathering 3' - brown siltstone where there were once fossils - very silty 21) Covered 16'