Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
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Transcription
6/28/83
Trumbo Ranch quad
F311 1 1/2 mi S of Brownie Butte
NW1/4, SE1/4, T20N, R
W lignite or Big Dirty lig.
at top of hill w.
crystal tuffs
Lign. between
Ring of Tent Volc, abt
80 miles to w est
are probable source
Numerous ash partings in
the coal. Some are
XL. Tuffs.
All
Y311 1 1/2 mi S. of Brownie Butte
NW1/4, NE1/4, NE1/4, Sec. 9, T. 20 N.
R. 37E, Garfield Co., MINT.
Trumbo Ranch 8 1/2' quad.