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Contributed by Yale Peabody Museum of Natural History.
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Transcription
128
7
7/24/51 Section 19 - up to eastern meet
Cliff joining Wgcamp Crags - topped by Brea & Lidge
Brea Ranch.
The lower part of this section is covered and
as jumbled up
no day
0) Covered below
1) Sandstone, green-gray weathering, much
green vitrinal, 6", Collection 7/24/57/1
2) Conglo., brownish weathering, mostly 1/4" to 1/2"
clust pebbles, brown sand, some but few crinoid
stom fragments, 5', 7/21/57/2, 2" to 6" thick
3) Covered, 10'
4) Ls, mid-gray weathering, bihermal, no
digurate bedding, large cephalopods,
crinoad remains, probably too large for
Penn., could they be Perm?) brachiopods - 29'
Collection 7/21/57/3
(Rained out!)
7/24/57/1
7/22/57/11
7/21/57/3
7/21/57/2
7/21/57/1
129
7/22/57
(quartzite)
5) Ls, wt 30-40% clust/jebbles - gray to gray brown
weathering; a few ls pebbles. 3' below,
from about middle of unit upwards, larger
ls. cobbles appear, a few lons are
nearly sandy (coarse); 46' it should
be noted that the upper 2/3 of this unit
could probably best be called a Conglomerate.
The ls. is nearly completely lacking except
as cobble in the upper cliff. about
5% or less of the upper rock unit is ls cement.
6) Covered for most part, exposure are
conglo, clust & quartzite, ls cement.
One big ls block at 38' (Collection 7/22/57).
145' - I'm separating this as a unit
only because of the weathering characteristics.
7) Conglo, poorly sorted to no sorting, clust, quartzite,
ls. pebbles; some small cobbles - lime
cement. 2 flaws, cliff forming. Become
coarser (small to med. boulders) upwards.
84', 1' to 20' beds.
8) Covered - 65' this is probably the extension
to the west of the green gray shale + calcareous
conglomerate.