argill., 7.1 Interbedded, gray to bl silty sh and argill siltstn 0.2t porcellanite 2t top, zucl thinner one on silty lzyer 5.2 from top, Siltstn beds chiefly in lower 4'. 16.0 Sndstone, fine gr thiclr bedded to tabular x 1zm, Odd conc? or foot print dents on surface 5' from top. Plty break on this lzyer 9.5. Sndstenc, lzm inated finer interlaminated dk gray silt +some interbeds shly silt. lzm inze chiefly lrucq, Some fine ss beds, All lrvcy thinly bedded wath gray to OB, but drsb on fresh cts 6. 4 Sndstone, fine to med.gr., irreg thin bedded in upper 3' somewhat more massive below. Bszl 0.8 is calt; ss thin irreg beds 17