1.3+ siltstone, massive, fine gr., buff weath. loc. silty, c Zob particles 1.3 siltstone, gray, massive 11.4 Interbedded gray to black shale and silty shale, and thin beds of siltstone and fine grained ss, top 3.0 chiefly black, blocky shale becoming silty in lower part. Weathery 2.5 Siltstone, cross bedded, few ss layers, locally sandy at top forms ledge locally. Weath litho gray 5.9 Interbedded gray to dk gray silty sh + clstn + thin beds laminated fine gr ss + siltstone, some Fe brown stains, weaths gray brown 1.9 Siltstone, chiefly massive light gray, c Zob flecks. Has bed: dk-gray shaly siltst. c Zob frags in middle part. Grades to units above + below. 28