Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Spring Creek section - SE-SE-NW-30-T6N, R5E,
Sturgis quad (7.5) West bank of creek behind
old Morrison farm. Probably bszl Lak-Up, Morrison.
Measuring down from first massive
sandstone on slope above stream
cut. (Dip is under 10° here)
9) 3.8+
Sandstone, fine-grained, massive,
quartzose, some scat. black minerals,
weathers yellowish to brownish grey white.
8) 13.0
Covered - bszl 1.0t is sandy
grey claystone which grades up
to a dark grey to black plastic
(nonzcle) claystone about 5' above
bszc. Above this completely wash
covered.
7) 2.0+
Sandstone, fine-grained to silty, with
local inclusions of underlying siltstone (?)
or similar blobs; chiefly platy,
mvrg. bedded, weathers brownish
to OB stain. Grades to unit below.
6) 6.5
Siltstone, finely sandy, delicately &
obscurely cross-laminated, forms
irregularly fracturing ledge at
top of stream cut, weathers
grey-white, is light grey.
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