4 8/6/57 Section 26 up Highest Point on Dayentuat covered below - contact with gaptank for not visible 1) Conglo, large boulders 10"-12" diameter are common. The larger ones are ls, but many smaller pebbles are chert and quartzite (fracture patterning rock) Thickness at least 30' 2) Sandstone, light yellow and brown, friable, f.s. sand, poorly cemented with calcite. 4' 3) Shale, blue gray with some brownish stringers, becomes more sandy upwards, v. silty throughout; 67' ; Coll. 8/6/57/8 4) Calcarente, has dark brown color just surfac. Contains brachiopods, crinoid stems and a few fusulinids (Paraschurina?) 2'-2½' 8/6/57/1 5) Sandstone; 1st half brown, basalt gray or green 2' 6) Calcarente, like #4 ; 6" 7) Siltstone and shale, brown to light brown, 2' exposed 8) Covered, 25' 9) "Hess Conglo", Calcarenite, Boulders 4' diam. many all ls. little chert or quartzite; Massive 44' 10) Ls., light brownish gray, well bedded in 1'-4' beds, lower 6' contain brown chert + quartzite pebbles; 26' ; Coll. 8/6/57/2 11) Conglo. 1½" to 2" chert + quartzite pebbles - 0' to 2' thick 12) Ls., light gray weathering, dense, no good bedding planes 3' Coll. 8/6/57/3 13) Conglo.; Chert, quartzite, Ls., all well rounded; up to 6" diam. 17' thick Coll. 8/6/57/7