Field Notebook: Texas 1957b
Page 69
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Transcription
7/29/58/3 - is from about 100 yards downstream on the SW side of the arroya. The fusulines an Pseudosch wagerer sp and Schwagerina sp, Bryozoan, Brach and Ammonites. 7/29/58/5 - 200 yards east of 4. The Wolfcamp is apparently a small fault slice (grauber?) in the Penn. The beds are in the Penn and Pm below the unconformity (conglo) faulted and PG. 102 badly folded. Individual beds are not traceable for more than about 50 to 60' if that far. This is apparently the top of a thrust-sheet according to cement theories - seems pretty reasonable. PG. 103 7/30/58 Wm Meuhlberger show J. Phillips and myself the Maravillas section at Ft. Pena, and the Daggerflat, Marathon (Buttrell Ranch mbr) and Maravillas behind the Leary Ranch. Miss Eveland and Davis (Launar Tech) showed us the Bissett Conglo, Upper mbr of the Capitan, about 2 miles due north of Altuda when we made 2 collections of bryozoans but found no fusulines associated. J. Phillips left on night bus. PG. 104 7/31/58 Hess Ranch Facies changes in Wolfcamp interval along SE face of Leonard Mt. The WC conglo thins to the NE, the limestone middle interval thins and the Dolomite mbr remains about the same, the upper light gray limestone (Coll. 7/23/58/3) is same as that limestone just about the dolomite at the crest of the Mt. AIR PHOTOS - first location at top of hill above Sect. 37 - Sect. 37 cont. (from p. 67) 10) limestone, fine grained, light gray, few recognizable fossils - 17' - 1'-2' beds. 11) Dolostone, medium brown-gray, 1' to 1.5' beds quite porous - 22' top of ridge. Working east along ridge limestone again began to occur stratigraphical above this section. 12) Limestone, light gray, fine grained, 6" to 2' beds 32' to top of highest point on this ridge (about 150 yards) east of line up ridge in Sect. 37, Collection 7/31/58/1 from Anthill below upper most 3' bed. PG. 105 7/31/58/2 - Anthill just above a sponge reef. Some of the coll. is from reef and darker limestone just above reef. Hexacorals, brachs, sponges, bryozoans? well silicified. South side of valley, Hess Horst 3/8 SSW of spring tank. Walked this unit into King's bed 7, section 22.