7/7/57/2 along Willow-Creek, Terlingua Quad. North 13', west 32'. This is probably Gulfian. {note: illustration: bed 1: covered bed 2: 15', marl bed 3: 3', clay bed 4: 35', massive Ss.} PG. 67 7/9/57 Section 19 cont. Wolfcamp Hills - Continuation of Section VII. 48) Shale, very silty, grades into a 6" sandy siltstone. Light yellow-brown weathering. 3'. 49) Conglomerate, fine sandy matrix, poorly cemented, 1/2" diameter pebbles - a few 2 to 4" bands of greenish-gray siltstones. 6'. Collection 7/9/57/2. 50) Conglomerate, 3" to 4" cobbles at base of a subunit. The subunits grades into a ledge forming (indurated) fine sandstone. 3 or 4 such subunits observed. Top of each subunit is rather planar. Coarse conglomerate rest right on top of this planar surface. 14'. 51) Shale and siltstone, gray to yellow-brown, 5'. 52) Sandstone, yellow-gray weathering, in 4" to 10" beds with 2" silt partings. 16'. PG. 68 {note: illustration: bed 49: 7/9/57/2 bed 53: 7/9/57/1} PG. 69 53) like #50, 0.5" to 1" pebbles, 5'. This grades laterally into 6' of gray and yellow shale and siltstone. Collection 7/9/57/1. 54) Sandstone and conglomerate 3" to 3' lenticular beds. Conglomerate 2" diameter max. Sand is mostly calcarenite, 10'. 55) Covered 6' - mostly gray to greenish gray siltstone. 56) A multicyclic (?) unit like #50, 3" cobbles 1' to 1.5' per subunit. 9', calcarenite sandstone a very fine to fine size. 57) Sandstone - very silty, and very fine sand size greenish-yellow-brown weathering, 3' rudite ledge 1/2" to 1" pebbles, 4.5'. 58) Calcaredite and calcarenite - 4" to 6" split parting 2' gray to slightly yellow- grey weathering. 59) 57' covered. PG. 70 60) Metamorphozed limestone, and some baked shale 5'.