Field Notebook: SD, WY 1961
Page 85
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Locality 101 Exposures in draws tributary to Crazy Woman Creek (draws called N. Prong Crazy Woman on county highway map) in NE 1/4, sec. 21, and SE 1/4 sec. 16, T. 36 N., R. 64 W. Good exposures of Verniella zone in at least large part of massive unit, and complete section well up into lower Lance... Massive does not seem to be fossiliferous as further east. Need to check outcrop for phosphatic nodule horizon. Need section of Colgate here - it has local fossiliferous lens, as does lower Lance. See sketch opposite p.40 for generalized section. Locality 100 Walker Ranch, draw to NE ranch and bluffs trending NE along W side Crazy Woman Creek in E 1/2 sec. 14 and adjacent NW 1/4 sec 13, T. 36 N., R. 64 W. In 1938 notes and AB thesis section #2W (windmill quarry) was measured in Walkers draw and parts of adjacent bluffs. The locality is exceptional for detail of bedding structures though the massive unit not as fossiliferous as along US 85. Re-examination reveals phosphatic nodule layer at top of massive unit (H of 1938 section) though here it is not marked by a prominent concretion layer. Instead phos. steinkeus + "turds" live in upper foot +/- of sand or on its surface. Some local conc, masses of shells - chiefly Verniella, cyprinerius-like elem + Spherioida. Base of bed of banded beds above this commonly an intraformational cgl of clay shards in sand + some reworked phos. nodules. 41