Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
conspicuous cap on ss below.
B (9) 4.5 Shale, dk gray to black and
shelly siltst, dk gray wezths
light blue gray, some interbeds
fine qr ss. Partially observed
Siltst predominates except in
lower 1.5 where 2 beds bl. sl.
and silt lb ss. This unit
changes from silty to sandy
in upper 1.5+ and grades into
ss above
(10) 7.9 Chiefly friable, evenbedded
buff wezth ss in beds
0.1 to 0.6 capped by more
resistant bed 1/3. All finegr,
silty in lower part where
it grades to unit below.
(11) 3.8 Shale fissile black, siltier
tgray above, 0.5 bl. slty
siltstone at top, lb orgill ss in
lower foot.
(12) 3.1 slightly silty.
Shale, black fissile, with 0.2-0.3
porcelenite at top and thin one
at base.