Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
Garnet Point
gray shales.
Splintery gray shales,
with a porphyry-tuff
at top, and one or
two similar bands
near the base.
Hauna saws as overlying
Peurbroke purple shale.