Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Notes on Cloverly in So. Central Wyoming & Adj. areas
Red Buttes area:
At road cut on Wyo 220
Mowry - well exposed, considerable soft sh at top.
"Muddy" = ledge former
Thermop. with black sh. poorly exposed,
Some worm-tracked silts.
No contact with Cloverly exposed.
Further west, near narrows through
"Muddy", Cloverly consists almost
entirely of ss and cgl ss. In
bluffs S of Wyo 220 ancqite;
light buff-white woth ss, massive,
x-lam, loc. frizzle is at top. It
either grades to or is underlain
by a massive, harder, conform +
cgl ss with chert + qtzte pebbles
up to 1"½" diam, commonly inch or
a little under.
Locally softer clsty layers
some white (porcellanite?) clsty
near top.
Conspicuous absence of "rusty bod"
sandstone. Slope above cgl ss
shows some floetz of bra ss
in 1" ledges but contact itself
not exposed anywhere. At best
the Plainview equivalent here
consists of a single thin ledge
or two of hard ss.
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