Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Fall River-Lakota contact. Seen at A,
B, D, and the Carlie Mine road cut.
At B, considerable, +15' shale between
chert to Fe specked var. clstn and
the 1st Fall River SS. At A, a thin
grey SS with plant frags is at base
Fall River & sits on light grey clayey
silts fine, then comes var zone.
At D. a good break from grey,carb
specked, silty clstn to light grey
then var yell. + red. Fe specked clstn.
At the Carlie Mine the contact
zone very atypical and good break
in lith. not evident. Here there is
much chub. meltae, including liq.
sh. in the interval between the
1st Fall River SS and highest Lakota.
Should get section of this.
Fuson-Lakota unit: In this area the
Lakota is consistently sandy & clayc.
A lower massive clayc SS is
commonly a cliff former but
passes locally, in part, into uncousd.
grevelly sand. Above it is locally
(viz Black Gulch & Carlie mine) a
clstn interval with some SS layers,
then an upper massive SS. (Izter#- 43