Thinly 41) 11.0 Interbedded to interlaminted fine gr. SS, siltstone mud silty shale. Alternating beds commonly ± 1 inch, but some hard, qtztic (locally) SS 40) 2.1 Shzle, dk gray, fissile, some siltstone interbeds. 39) 1.5 Siltstone, highly argillaceous, sobconchoidal frags, weathers brownish gray. 38) 0.1 Clay? Very plastic light blue-gray weather, may be bentonitic 37) 0.1 Siltstone, argilly, carbon locally hard. 36) 4.3 Clay, blue-gray, plastic - unweathered equiv. not seen, may be plastic shale. Bessl 0.8 has platy thin interbeds argill, siltstone. (so presume