Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
57 - SITST, as below
WITH few blebs
Orange greyish stained
& light yellowish
grey when fresh.
60 - SITST. Orange
Whi. & limonite &
1/2 grey mottled.
63 -
Purple Grey weathered
purple
grey & yellow mottled
Gyp xl bearing
SITST,
64 - SITST. Becomes
Black & mottled
with limonite
contains much clay
& lignite but no
definite lignite
zone. Gyp x/s.
very dark grey
when fresh.
(Alamo Bluff lig. zone)