PG. 26 8/10/57 see King 1930, p. 121 who examined Bk Peak on south side. My notes are made from the north side. Black Peak Sect. 28 8/10/57/1 - Limestone float from main massive peak. 8/10/57/2 - from very dark gray fetid limestone at top of lower lying ridge just at south east-base of Black. John Skinner says this is Bend or Lampasian - in age, Aug. 29, 1957. {note: illustration: LOC 59 and LOC 60: bed 1: Thrust fault underneath; Gaptank? bed 2: Covered; 8/10/57/1 bed 3: 8/10/57/3 bed 4: 8/10/57/2} 1) Limestone, most dark gray, some mottled patterns in the strata; fossils are scarce, a few corals and crinoid columns; about 90'; Collection 8/10/57/1. 2) Covered, 40'; In a stream cut, some badly shattered and fractured "shale" which is mostly green siltstones and green-brown sandstones (weathering red- brown). These seem to be similar in lithology to parts of the Haymond and parts of the Gaptank near Dugout Mt. PG. 27 3) Shales, black, organic, with some silts. 1/8" to 1/4" bedding; a few sandy zones or beds; 60'; the sandy zones weather red-brown. Collection 8/10/57/3. (thrown out). 4) Limestone, very dark gray to black limestone, some bedding surfaces are silicified with a brownish colored material; beds 1" to 2'; 40'. Collection 8/10/57/2. 5) Covered above. The color and general lithology reminds me of the Hueco on from Underwood's area in the Eagle Mts. These shales are more organic, but the approximate % are roughly similar. The Black Peak area has been faulted and distorted badly so that while these figures are only approximate, I would judge these are minimum figures rather than maximum. The little fusulines from 8/10/57/2 are like none I've seen before. They are larger then the Scherhertella's and appear to be Triticites from field examination. The rock facies here seem to be quite strange for this part of the west Texas region. PG. 28 8/12/57 Type Areas of Gaptank Fm. Collection 8/12/57/1 - from Gaptank #1 conglomerate member of P.King, at Allison Ranch south fence.