Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
AIN 84-02
58
1 Band of concretions in cracked clay soil.
Pierre shale, west of the shady soil continues
to foot of next rise but no way of telling
whether it is all Pierre or Benton faulted against
Pierre
2 Shaly soil some bits of cone-in-cone and
nondiagnostic concretions mixed with gravel
3 weathered patch of clay and bits siltstone + sandstone.
4 Looks like Glauconia
5 Typical Little-type sandstone. Fe specks, in place.
6 Outcrops of basal Morrison sandstone.
" " " N 45 W
7 There is also a double SS here - exposures
at it not carefully checked for this but it
doesn't make much diff in drawing contact.
Little balaena clots. West dot at Fe ss, thin - with
Parcellinite
Outcrop like zone above base. This bend sees S
of School of Mines trench also. East dot
on thin col above grey claystone may
still be in Lytle or could be Glencairn-Lytle
contact.
Note- the Morrison west of it has fault in
it just above 2nd ss from base.
8 Approximate Little Morrison contact. Here
there is a bed of the parcellinite 2 foot thick
also one on Rainbow CT sect this position
9 Approx. Lytle-Glencairn contact. Things are
a sheared mess in here.