Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
6/27/18 - Decorah outcrop on IA 9 in
southern side of Decorah, IA.
Adjacent to road & extends // to
hwy; road into parallels IA 9
Floor of X, photo 3 on hwy IA 9
Photo 1
clay bed
26'
Saltstone break
silty/silty limestone
53'
Shale w/modulus limestone
32'
calcarenite
(fossil black coarse)
calcarenite
in 2-3" thick beds
Photo 2
Ls, dolomitic, wed to fine calcarenite (?)
L floor
Photo 3
limestone roll
Ls w/fine
calcarenite
Ls & shale
(P)
in Areadcat
8-10'
McGregor Mbr
Plattville