Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Schizophria striatula, Cetyba reticularis
and possibly Pachyphyllum cordorani,
The thickness was not determined but seems
to be some hundreds of feet thick.
Hifn comes in the Mississippian
abounding in crinoidal cylinders, as Dr. also
saw Rhypidomella trierei and Cysta-
crinus (a first surprise).
There is probably Pennsylvanian here
also.
Below all is a vast area of coarse
granite that is "Pre-Cambrian" in age, prob-
ably Archeozoic. . . It retains many small
millstone grits as is so common to granite.
It is the same Pre-Cambrian
granite seen in the Wetstone Mts.
The Babada all along the north side of
the Santa Catalina is much dissected
and it is still growing. This is in keeping
with what I saw on Sunday. Took a sample
of the outer Babada material, taken on the
Oracle trail side 1/2 way to Tule Ranch.