Field Notebook: Texas 1957b
Page 143
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
22 There is another ls, similar to this one, about 40' higher; This could be slung from that. Coll. 8/9/57/4- From near the middle of the wrecamp in the stream gully which forms the 1st windgap SWy the peak. Itas from the lighter interval, equivalent to the 2nd bichurmed ls. This entire wrecamp here seems to alternations of brown-orange sandstone & grey shales. There is just some question where the wrecamp - and Gaptank should be split. The Gaptank forms an anticline beneath the Ridge at this point; the beds I've called wrecamp may be the evenly dipping sides of this Gaptank anticline. It seems evident from the general relationships that the wrecamp thus appreciably lies out & faced the crest of this structure and also that the source of the wrecamp deposits here are the sandstones of the Gaptank, not Dev shales! 2 There is no chert couple and indeed scarcely any couple at all. The friable Gaptank 55 didn't remain pebbles very long. Coll. 8/9/57/5- in the swdeterminant windgap- about 25' downon SE side. ls, brown gray, very conglomeratic, 1/2" to 1" chert + ls pebbles. This seems to be within the wrecamp interval. I would guess judging from the beds above & below, this is near bed 15 Section 23. 2) Section 28- SW wind gap; Degout NH. Covered below - approximately 20' (?) above angular unconformity with Gaptank. 1) ls, brownish gray weathering, very conglomeratic see note about Coll. 8/9/57/5- 12' 2) Sandstone and shales; light brown, friable, 1/4" to 1/2" bedding; 25' 3) Calcarenite, and grayish brown; coarse sand sizes; a few foot-sized features & other organic frags. 4' ; 6" beds