29) 2.4 Siltstone, dark gray, clayey locally hard; locally massive commonly a silty clayston at top. 28) 0.6-1.0 Sedstone, fmoep, massve, one irregular bed, greenish gray 27) 4.7 Clzystone, alt gray to black schconch. fracture, approaching scamflint clay. Finely siltty becoming more siltq in base d 0.8 and grad ing into unit below. (Sample 3) 26) 1.8 Sedstone, fine qo, silty, greenish gray, commonly 0.8t trzusion zone from svill. siltstue above. Like smaller 0.6-1.0 unit above shows spheroidal weathering. 25) 4.0 Clzystone, silty and svqill. siltstone mixed-subconch fracture lite gray (silter) to black, most of 1/2 hor in thin streak in middly. Thin zone, 0.2, czvb claycy siltstone at base (Sample 4) 57