Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Colorado 115 section at Dakota hogback betw.
Turkey & Rock creeks..
Section pieced from outcrops along ridges N+S
of road as well as along road cut.
NW side of rd on bluff - partial section
(Not used in charts)
11.8 Irryq interbedded siltstone and argillaceous
siltstone, and fine-grained sandstone. SS
predominates in upper 7.0, below this
beds progressively more argillaceous +
some pts of silty clay.
3.0 Shyly argillaceous siltstone and some silty
shale, chk grzy to browngray with thin
interbeds siltstone & fines.
4.6 Obscured by wash, due to weathered
surface, shows a dk gray highly silty
shale with yellowt + orange Fe
stains.
-NOTE- may be small fault here or just weathering
along fracture plain.
1.7 Dk gray plastic clay, finely slightly silty, with
Lingula.
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