Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
(2)
Section at E side N and hogback just S.
B. Plat Ho, in old clay pit base Graneros &
tunnel into Dakota clay
N 20° W, 70
Black fissile shale (Graneros
A
2.1
Platy siltstone in beds ⅛" to 3" thick
with partings & interbeds silty shale
& shely siltst.
x-low
B
1.1
Sandstone massive, fine to coarse
with chert-qty-clstu-ss pebbles
and layers cqt. chiefly on upper
surface. Weather y-brn.
C
2.0
Interbedded fine grained sandstone &
mottled brown & black papery shale
ss layers ½ to 2" thick. Some silty
layers in shales
D
0.7
Sandstone, massive bed x-low, fine qr.
Weather's brn & y-brn.
E
2.6
Shale silty shale with interbeds lminze
of siltstone, shale grey weather brownish
full of fine plant frags. Local liquid
zone 0.9 from top.
F
4.6
Sandstone, massive, to evenbedded-
laminated in lower ½, mostly fine qr,
some medium in upper ½.
G
1.7
Lignite, shaly in upper part(15?)
remainder coally. [Sample 1.]
Locally thin bentonite like layer .5 from
top where coaly begins. Base of
part liq bed is locally liq silt.
H
3.6
Sandstone, fine grained massive
grailly & silty in lower part
I
0.3
Bentonite-like clay [Sample 2]
J
3.2
Sandstone, massive fine-qr, as
in H above, ferrug, clays & mottling
55