Field Notebook: SD, WY 1961
Page 57
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
(5) 4.9 shale, quzy to dk grey, silty, thinly interbedded and interlam. lower few ft mixed silty clay - jevosite block at top (6) 5.6 As in (5) below - chiefly thin beds & laminag, Jevosite silt zone. at top. (7) 7.4 Shale + silt as below, some mixing. At top layer small thin brown wash. Fe concr - one float piece with large scaphite (nehorzceusis succesor type) imprint. (8) 5.3 Interbedded silty shale and silt, some jevosito locally, minor ob. stain. Silt layers becoming thicker & more abundant (9) 3.3 Silt, shizly, washes light brown grey but is at top of slope. At top is cone in - cone conc. layer. A1412 nearby uplands 27