Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
6.
1.0 Crumbly argill, siltstone+
SS irreg interlam to
12m, some shaly zones.
5.
0.4 Ss/sandstone+selbst, irreg
interlam, hard loc.
4.
1.3 Shale, black, fissile at
top grading to silty
and sandy shale + into
argill shly sandy siltstn,
grey.
3.
0.3.
Bentonite
2.
0.8 Shale, grey, soft, with
thin (<0.1) bed black-
clystone at top
Mowry.
--
Shale hard, siliceous,
w/eths silvery grey
ledgy. This is quite thick.
Unsat measured - size fits
for about 25', forms
characteristic "white" zone
in landscape.
35