Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
120
6
7/20/57 Deer Ranch SW end of hills
Section 18-
1) Conglo, baxly caved. have a Caly
Flag and Gyp pebbles, gray var matrix,
a small amount cement, Ca CO3 cement.
Not knowing if the dips are significant, level
level up through the conglo beds. This
unit is in part covered, but the conglomerate
are coarse and are the only outcropping rocks-
55' Cobble of Conglo-Collector 7/20/57/10
3) Covered 4';
2) LS, gray sandstone, some minor amounts
of fragments of chert, dip about 10°WNE.
Grain within this LS unit are quite conglomerate.
The chief distinction between these #2 and ls
sand is the matrix. The conglomeration
petrified in about 7', but r.f. pebbles are
present in the 15 higher in this unit.
Top of unit is very silicous, well sorted from
a 1" plate. Bedding-below is 1' to 4'; 52'
This unit is also equal to lower Hess ledge.
4) Siltestone vs sandstone silicon cement
Can vary but often irregular texture; Silicon
cement is 2ndary see 7/20/57/1
11'
5) LS, clastic, with ched pebble 1', thm to NE.
thickers to SE
6) like #4 5'
7) like #5, 1 1/2', thicker to SE
8) like #4 6'
9) LS, clastic, 3 beds 4" to 8" thick, each
with well sorted flat tops, separated
by siltstone; 3' 7/20/57/9