Field Notebook: SD, WY 1981
Page 37
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
0 - 1.0+ (10-2 C) Same lith as below with large flat platy lenses (up to 1.6+) 5.0 As below but more silty stringers, capped by 0.7 interval with thin fresh silt limestone beds. Locally these thicken. Distinctive fresh of fish teeth scales limpets in brn platy limey slabs. Local ostrac lenses. Lone platy ls cone 3.0 12.0 Grey fossil silty shale + silt stringers. Lone platy ls cone at 3.0 above base. Up quietly, fossiliferous 8.5 below bentonite. 0.2 Grey clayey silt with 0.1 bentonite on top 9.2 Like grey weathy clayey silt + sand in upper 4' grading down to dk grey silty shale. (Total Pool Cr, measured = 45ft [45 ft] 3.5 Sandstone, fmqr shale pts in beds to 1.4 inches thick (Baso Turner - an abrupt change to this ss but interval below grades to it.) First massive x-bedded ss (edge