Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
10: interbedded fine gr. silt, silty
[unshab. grass] downward into interval below
2.6': dark grey, shaley clay becoming silty
columnward; weathers blue-gray: hard platy,
with lower part friable in higher part.
10 1/2': hard resistant argillaceous siltstone
and fine sandstones; dark to light gray (wea-
thins), iron-stained. Has plant frags., ch
beds 6-8