unit no thick description 10 50ft. ss, flaggy becoming massive (1 meter thick layer) at 50 ft. an 25ft. above 50ft it is a flaggy again with much comminuted plaw frags and carb. (75) bird track sand as well as scours at base of massive unit at 50 ft. 11 60 ft. poorly exposed shaley dk brownish gray w/ thin lenses of flaggy brownish ss (6) 12 150ft. rusty weathering, very dark gray siltstone carbonaceous flaggy (150) becoming vfy ss at 150ft. rippled. parallel laminae