Field Notebook: SD, ND 1959
Page 61
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
1.0 from At top zone brown & foss. coars apparently the Protocretic layer upper foot is OB westn, Juvosth bnd = brown layer? (4) 8.0 Shale, gray, finely silty, brownish gray westn, to checked surfacc, sharp change from unit below. Zone csscarily brown gray-worth coars at top.