silty limerzet zones in top & base. Two beds argill siltstone, top .6 to .8, bottom .2 to .6; separated by silty clay shale Bentonite. Dk gray highly argill. siltstone. Dk-gray silty shale with 0.1 bentonite at base. 1.8 Argillaceous siltstone, plastic to shaly with minor interbedded shale (silty) Shale, dk-gray silty with thin interbeds of argillaceous siltstone Bentonite Interbedded, argillaceous siltstone and silty shale, latter chiefly in base21 foot siltstone locally study in head bed ledges at upper 1 to 2' E N. 90 W, 480's. ? on top bed. From here on shale slope up 5+ yards under cover. At least 15' of shale silt, shaly including some good plastic stuff and beds siltstone - then covered sg slope. looks like same structure in past just 2 bays last unit cross, then where exposed, slope comes in at looks like Gremeros. Within next 20 to 30 ft starting you get typical Gremeros-like shale till the way 18