Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
massive, light gray, x baddled. Weathers
Fe brown on joint planes.
This unit thickens laterally
at expense of overlying siltstone.
At one point is about 20.0 ±
D. 7.0 Interbedded fine gr. ss. and silty
greenish gray clay. [Sample from
green clay] laterally clays
thin + ss beds coalesce
and to W ss thins out and
interval largely clay.
E. 7.0 Sandstone as in C. West in
cut it lenses out into variegated
red+ green clay + argill siltstone.
Then reappears again 5 side of
portal and thickens to join
ss lens (see G.) at portal.
F. 14.0 Claystone, silty + argill. siltstone.
chiefly red (about 5R 4/4).
G. At least 20' exposed —
Green argill. siltstn. + silty clay
with yellow stain - occupies upper
5 to 10 ft where no ss present
goes into red and purple beds
in lower 5.0+ [color of latter
varies, Range from 5RP4/2 and
10 P 4/2* to 5 RP 3 /2 and 10P*
3/2 - splotted with ironey red
clay 5R 4/2 and 5 P 3/2.¹⁶ Greys
to dusty purple and red purple. with
*This interpolated from chart as between 5P+ 5RP 29