Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
6/26/98 - Spillville, IA, Quarry about
3/4 to 1 scale east of Spillville on County 325
(Dvojak Highway) on north side
upper Ft. Atkinson Ls.
and siltstone
mudstone > blue gray ls bed at top ?
(sublithog)
Quarry face
massive
siltstone breaks -> SB -->
spongy calcrete nodal 2' relief -->
comm, -->
4 photos
burrowed, X-bedded
(in this light (3g m))
it looks X-bedded
see photos
mudbq, v. salty dolost
X flos,
16'
4'
2'
4'
2'
4
2
2 1/2'
3'
6 1/2' passed into a
5 1/2' steeply X-bedded
7 1/2' mound facies
9' with no
bedding,
5 1/2'