Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Sec. 8610
Fort UNION Fm., Lebo Mbr.
SS, med to fig. ledgy, well ind.
D K mudst, sh interbeds, fossil pis.
Sh, lign.
mudst, med grey, massive, root casts.
mudst, lignitic, dark grey
SS, x-bedded, w/ thin limonite
beds, more indurated upward.
mudst., med. grey, becoming darker
upward, limonite near top.
Sandy interval, mostly friable, w/
ledges of indurated tan to br. SS.
SS, ledgy, yell to bn grey
Sh. a mudst, dk grey
LANCE Fm.
SS