Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
(4) From top Niobrara to base Audmoe bentonite
west gulley just up about 60 ft from culvert
(1) 2.0 to ? Niobrara. Dark shale with cele specs,
weathered brownish to bluish gray.
calcareous. (CWB # KN1 from 0.5 to 1.0 km to top
cwb# KN2 " 1.0 to 2.0 " )
At top is 0.5 of brownish weather
shale with gypsum partings, mostly
noncalcareous, black stain on bedding
Garrison Memb. Pierre
(2) 0.2 Bentonite streak in rusty weather
shale.
(3) 2.6 Shale, weathers gray with rusty zones
cwb # KG 1 in lower foot, KG 1.5
is in top foot
(4) 0.5 Bentonite
(5) 9.0+ Shale Ph grey fissile to streak
bentonite + jarosite CWB# KG 1.75
3 feet above base
slump?
(6) 9.5 from streak jarosite to base Audmoe
may be section missing.
CWB # KG 2 4.5 to 5. Below Audmoe