17(cont.) down slope 2nd clay, with bentonite at top, recognizable, also 3rd shale with local pit in lower part. Down from this no outcrops in swale area. 18. The main clay bed comes in again just south of high point and here shows some black clay with sandy bentonitic layer at base 19. Sandstones above main clay bed appear to be unbroken by any clays, can assume 1) all Dakota channeling in, or 2) the coalescing of sandstones 0,-1 + -2 with Dakota together. AIN-50-21 2. Main clay bed out completely here between the 1st Glaciarium + overlying sandstone. Contact shows clearly in ciff face, with massive X (2m) on evenbedded brn weather ss 3. Plastic clay comes up back of hqbkck in structural saddle. hes 2 thin bentonitic zones in it and is capped by Dakota-like ss. Possibilities 1)it is in Dakota 2) it is one of upper 3 shale beds + ss below ave greatly thickened 0+-1. SEE NEXT PAGE