2) Limestone, biohermal, dark gray to medium brown, yellow weathering silts, chert pebbles and limestone cobbles, 2 beds, 14' (Collection 7/22/57/11). 3) Conglomerate, brown weathering. Cherts, quartzite and gray limestone, brown sand; This unit laps up side of high (top) in #2 bed and finally covers over the top. Strike N30E, dip NW11°, 29'. {note: illustration followed} PG. 136 4) Sandstone, brown to gray, siliceous weathers purples, magentas and orange locally, 14'. 5) Conglomerate, brown weathering; has sand of #4, cherts and quartzite (but little or no limestone) medium pebbles; has the dark weather colors of #4 - secondary! replacement, 6" to 4' beds. 74'. Moved SW along bed 5 - 100 yards, to a point opposite creek bed. 6) Sandstone, yellow to yellow brown weathering, 1" to 3" beds, a lot of silt and fine to very fine sand size; quartz, poorly cemented. 6'. 7) Conglomerate, pebbles of chert, quartzite and limestone; light gray-brown sand matrix. 4'. 8) Shale, brown, some gray-blues; a 5" brown weathering sandstone top, total 6'. Collection 7/22/57/12. 9) Conglomerate like 7, 2.5', with 2 interbeds of #8. 10) like #8 with 2 - 3" to 4" conglomerate beds like 7 [8]. PG. 137 11) Conglomerate, pebbles of chert, quartzite; brown sand matrix; weathers brown to brown-gray, 2 beds, one 2' massive, upper one is 1' flat top of fine sands, 3'. (continued on pg. 143) ------------------------ 7/25/57 - Van Horn area, Eagle Mts, east side. Collection 7/25/57/1 - shale zone in Hueco - about lower 1/4 of outcrop - This is James Underwood's Thesis area. 7/25/57/2 Wolfcamp? (Sample 7/25/57/2 of James Underwood U of T). NE end of Wolfcamp hill NE of Eagle Springs Ranch House - was base of hill massive, dark gray limestone. 7.25.57.3 (4 to 6' above 7/25/57/2) The Hueco? is exposed in several localities here: a) In Page Twiss' area in the Van Horn Mts. the Hueco is a dark dolomite in its entire sequence above the PowWow Conglomerate - 800 to 900 feet. b) In the Eagle Mts. James Underwood's area the Hueco becomes sandy in the lower and upper parts - same dark gray limestone (dolo?) in the middle, 600'?. PG. 138 The Hueco exposed in Page Twiss' area is a dark fetid dolostone; Echinoid spines and some products of brachs are silicified prior to dolomization, but nearly all other fossils have been dolotimized and either completely lost or lack any structures; just outlines. In the Van Horn Mts. there is about 800-900' of Hueco -