Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
conspicuous in upper part.
At 2.0 above base is
zone scattered cone-in-cone in
thin brown bentonitic shale.
At 6.5 from base large
Sphenodiscus found in place
in shale
In upper few (2±) feet, a
mixed silt-shale locally.
At top is zone of purple-red
exfoliating lons cones which are
light brownish gray on fresh
surfaces.
⑤ 25.0
Shale, gray, silty, weathers light
gray slope. Chiefly a good flaky
shale with silt laminae & thin
beds and jerositic layers
throughout. Shale is siltier upward,
locally "mixed".
At 4.4 feet from base is
another layer purplish weath.
Cones, and a few smaller ones
are scattered in between it
and base of unit.
At 14.0± from base scattered
gray-white weath dk blue lons cones,
flextured irreg. Type. (Scripoid horizon)
At 3.5 from top a brownish