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Transcription
PG. 113
7/18/57
East of Texas Highway 51, beds of what I believe are Wolfcampian age (at least
lithology) are folded and faulted quite badly. The axis of a syncline strikes N74W
from peak of K on NW sides of road up a valley in K on SE side or road.
[Slides read 7-18-57-11.]
7/18/57/1 is from a sandstone in the creek in this syncline. This "syncline" is
probably drag resulting from faulting NE of locality 7/18/57/1. 50 yards NE of
locality 7/18/57/1, beds are on end; probably another fault, not same one. These
structures predate K, although the K is jointed or even faulted (1' through) in this
zone of weakness. This little area is very complex - 2 sets of faults; one N74W
or so and one N3 to 5°E.
PG. 114
Gaptank locality
Section 17 - This begins in Wolfcamp, concealed fault or faults - Near the base of
W.C.. There are
1) A number of chert and quartzite pebble conglomerates and quartz sandstone
- 8' orange-brown weathering, Chaetetes and tetracoral parts - 8/24/58/1.
2) Covered and faulted (probably) distance problematical, +/- 20'.
3) Calcarenite, orange-brown weathering, dark gray fresh many fusulines;
crinoids, very fine ss matrix. (Collection 7/18/57/2 coarse in slope) 4" to 2' beds,
shale partings; 9'.
4) Covered 33', passed one upturned outcrop - marks N74-75°W fault of about
10' throw, south west side up: at 63' the outcrops strikes nearly north south -
apparent cut by a fault in that direction, east side. [faults add about 30' to this
interval better exposed north of old road].
5) Calcarenite, orange-brown weathering, shell hash 1.5'.
6) Mostly covered - a 6" unit like 5 seems to crop out in middle of unit. [5'].
PG. 115
{note: illustration:
bed 2: 7/18/57/2
bed 5: 7/18/57/3
bed 7: 7/18/57/4}
7) like unit 5, in 3" to 8" beds, 4'. The back of this unit has been faulted off.
8) To the best of my ability I believe I found the same beds as 5, 6, and 7,
covered for 13', then
9) Calcarenites, orange weathering with an increasing % of quartz sand,
upward; Interbeds of conglomerate quartzite and cherts common but with some
limestone, many beds are dominantly limestone 24' - upper part dominantly
conglomerate - lower part ss.
10) Covered probably the same as 9.
Collection 7/18/57/5 - P.King Chaetetes limestone at base of Gaptank along old
road. (N dip of anticline is type area).