Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
7-16-1
(silty)
21' Clay (very light grey
unweathered) layers of
Limonite & Gypsum abt
6-8" apart 1/2 thick.
Still orange & grey
mottled when weathered
24 SILTSTONE DITTO 21'
Otherwise, BUT no
Ledges of Limonite.
Gyps still presur
28. Clayey SILTSTONE
DITTO 24'
GYR
30' No lith change
However UNIT from about
29.5 - 30.5 MAKES STEEP
slope on shoulders and
appears more grey than orange.
Exp X1S.
[illegible]
Porter/iff.
30.5 No lith change but
weathered appearance is
orange with darker grey
mottling. Polygonal cracking
through whole UNIT.