Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
8226 PEARL AREA SE 1/4, NW 1/4, Sec.
6, T 20N, R. 137E GARFIELD CO.,
MONTANA TRUMPS MARCH 7 1/2 9une
Base of Tullock Fm lies
4 m above a carb
lignite in H.C. 4 above a
yellow sandy interval
No pyroclastic LB in what
has been called the
upper z. Has this gone
into a CLASTIC interbed
19a
Base of TULLOCK defined on
twin criteria of
yellow brown banded
mudst silt +
conspicuous lignite beds.
(app 2 dcm thick)
& laterally continuous
on scale of several
sections