AIN-49-04 Mossey Creek - Dutch Cri hogback 1 clay bed comes in here - about 2' of good clay and some argill. siltstone & sandstone at base. Bed pinched out about 40 ft N & 15 ft south. Identity? no bessel bentonite but its low in section 2 platy beds, underlain by irreg. bedded, rusty weather ss with flinty, bentonite like layer capping it. 3 main clay bed in here, bentonitic-clay at base, for short distance. Between 2 & 3 this horizon marked by wt zone in coalesced overlying & underlying ss. Local clay pebble cgl also marks it, but to of this type zone and relations of upper obscure. 4 Platy beds - in place. First clay bed in here, swings over rim and causes swale. In and out S of here about halfway to 3. Bdga. platy beds thin ledge ss (typ 2nd?) then slope, with platy ss ledgy at base (3rd), the 2nd bentonitic layer of 3rd shale crops short distance up slope above it. Below 3rd ss slope that includes discont. Then ledge cgl. Lytle with Fe-stone cap, about 10', then slope of lb. ss & redclsh then 40' ledge cgl. ss, red wash at base. This massive ledge is local. North of swale the main clay bed pinches in and out between a thin(?) 1st Glacierzrn and thin overlying Dakota. These 2 ss. make up the rim. Clay bed locally represented by siltst & silty clay. 10.