lenticular, cross-bedded -> become shelly locally. Hard layers worm-worked siltstones, and fine ss (layers) very little shales still gypsic. Shaly zone: Thin beds + icicles of fineness with darker-bonded siltstone and sandy shale, gypsumertings ss siltstone typical (of all zones there as well) Is buff to tan, Contains few fns + U-shaped worm tubes in ss + worm casts on bedding planes. more slowly interval becomes. Sample 2 from slate in lower 3' Dk grey to black shale with thin beds of laminated siltstone which is celcerous. Ledges of platy siltstone, about 0.6 @ at top and base. Sample 3 from shales in this interu2) As above. Silt + ss+dt (zmmune and lenses of it up to 0.6 common. Sample 4, shales B this interval. At base, fossils black shale with fss sample C silt selenite. Sample 5 Bentonite AB114 3.7 0.4+ 6.5 5.7 15.1 3.2