Field Notebook: SD, NE 1959
Page 85
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
(4) 9.5 Clzy, locally shale as below, mottled - mixed Dk blue grey silty clay and gray, yellow to o weath, vfq + fq subgrywckto sand, and silt. Grades to units above and below In upper 2,0 sczbeved large, up to 3.5 I.d. Ovoid ls cones. Weath yellowish gray to brn, with cracks filled with yellow calcite. Some plant frogs in them. Thin whitish - yellowish gray finds. Break at top this interval taken at color change from clow, gray to clow yull. gray + buff. (5) 9.8 Clzgy szudusilty very little dk blue gray shale in ivvy lzyrus + blebs, yellowish gray on fresh dried cut, some O, blotches + leycus, In upper 1,5+ small ls cones 2v. 0.5 I.d., round to ovoid hwd dk blue-gray cores weather exfol. red-brown, fossils locally but very rare. top of hill. 41