Petrkdale section #2 North along river road from Petrkdale #1 SW facing scarp of hogback at progenitor plant. Unit #3 of Petrkdale #1 forms ledge here. bzszl 4.6 is massive, fine grained, under surface of overlying ss. has Inoceramus. B200 of the 4.6 or down - 3.4 - Shale, dk gray to blach fissile with thin interbeds clayey to shzly siltstone, Sst 0.7 - Siltstone, laminated, hrucl, weaths. blue gray 1.2 - Shale, black, fissile, some silt layers. 2.6 - Sandstone, fine-med, qr, hzd tshlzr, loczl shzly ss bed in middlu. 3.0 - Shale, partially obscured, dk- grey to blach. some silt layers & laminato 15.0 - Sandstone, massive, fine gr to silt, uvvcy x low frizble weaths, yellow br & buff crumblly. Lowcy 4 to 5 ft some conc. Fe brown ledgy 20