Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
The Gravel Chunk is afrite with sun-
cracking on the mud scales sometimes quite
convex. Rain prints are also common. Rots
may also be often seen in the shales.
In a series of red sandstones alternating
with redder shales, the shales predomining,