Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
9'
so: fine grained: in massive beds: cross
laminated? gray to light gray: weathers buff
and iron brown: surfaces take desert var-
nish:
2.8'
sandstone and sandy shale: upper 1.5'
fine-grained sandstone: light gray plant
fragments: alternating soft friable and
fairly resistant layers. Lower part consists
of very sandy gray to [brown in the pink light]
with numerous layers of shaly sandstone.
5'
massive to very bedded fine so: plant
frags scattered throught: light gray:
weathers buff and iron brown: becomes
progressively argill. in lower 2' and
seems to grad[es] into unit below: no
sharp break recognizable between so
and underlying unit below.
3' -> 4'
sandy gray claystone grading to argill
so: hard, conchy fracturing. some thin lenses
of dark gray sandy shaly clay in upper part.
Basal contact of this unit with underlying so
appears to be gradational.
5'
so: light gray: chiefly fine grained: poorly
resistant: resistant where iron stained
massive with blocky fracturing. May be
local disconformity between this sandstone
and conglomeratic so below: few meters
at contact not exposed. cgl fairly fine
grained.
10