sands at localities adjacent to Deer Cr - this responsible for some of difficulty in picking contact, whose diagnostic features are much subdued throughout the hogback in Deer Cr - Nameless Cr. area. B.O.V.-32-8. Nameless Cr to Platte River. 1) Sand of Stone Quarry is clay bed. May be the Dakota clay. Is over upper big ss ? 2) Clay bed, main one probably, comes in here. punched out Not this point. Below this 1st Glen sits directly on upper platy bed, and sh out. 1st Glen has qtz + ch't pebble bzzzl clay. Sample? 3) Main bed of clay in here. Positively ident. by presence of bzzzl bentonite. 4) Main clay leaves out here. 5) Out of upper 2 beds comes in here. 6) Clay bed in and out between poles, probably #1 7) Contact at base 4th sh. The 3rd ss very thick in here - as at Nameless Cr. 4th sh in and beneath if Lytle ss. All goes under slope to s except top 3rd ss, Later becoming more froble to s. Rusty clay float, really a very coarse clay ss, in lower part 3rd ss + below - may be from 1st ss or may not. 8) Best 1st ss very coarse with local clay here. 9) Main bed back in, attains mineable thickness along crest 42