8/23/58 Beds 11, 12, Sect. 32 (37) = +- to Bed 23, Sect. 16 (40). "Hess" erosion has removed much of this interval. Bed 7, Sect. 32 (37) = Bed 7, Sect. 31 (39) - (it must!) +-. Southwest of Marathon, Texas 8/23/58/1 - from "Gaptank fm" about 200 yards NW of King's Ammonite locality about 2 miles south of Arnold Ranch. 8/23/58/2 - same general area as above about 150 yards SW of Ammonite - locality. Weren't able to fine ammonite bed however. PG. 142 8/24/58 Bill Berry reports that limestone and dolomite sequence on southwest face of Leonard Mt. intertongue and thins into shale and siliceous shales, according to G.A.C. 8/24/58/1 - at base of lower conglomerate (dark brown) above highest Gaptank gray limestone at Gaptank in fault silver at Gaptank. 2 bags. Basal Wolfcamp. 8/24/58/2 - south of Allison Ranch House, second gully S. crassitectoria zone (probably pretty high). This is about 40' thick here with interbedded siltstones in the dolo-silty limestones 6" beds +-. At Gaptank there are at least 4 faults which cut the Gaptank and Wolfcamp beds. Most of these can be traced into overlying K. The #4 and 5 limestone of King are repeated units of the same bed. The major fault cuts the Gaptank fm. between the old road and the Tank south of the Allison Ranch the conglomerates on an algal limestone - approx equivalent to the middle part of King's #5 limestone in the Gaptank (at Gaptank). (Allison Ranch House). PG. 143 The Schw. crassitectoria zone (base) is about 182' above the base of the conglomerate there but the section is disturbed by several faults which may thin the section a little bit. The limestone and silty dolostones in the "Hess" facies contain considerable more interbeds of brown-red siltstones and shales. Omphatrochus also occurs here with some other gastropods. Many of the megafossils are silicified. Crinoid frags of bryozoans (rhomopora) are relatively common. PG. 144 8/26/58 Dugout Mt. 8/26/58/1 - Sec. 27, bed 3 (= 8/9/59/2) 8/26/58/2 - Sec. 26, bed 10 (= 8/6/57/2) This is above the Sect. 27 about 400 yards SW in about same interval 8/6/57/2. 8/26/58/3 - boulder above Hess ledge - may represent crassitectoria zone. 8/26/58/4 - NE of Dugout Mt. on small knob about 35' above base of "Hess" ledge.