3.7' siltstone with sandy layers: hard, new-tant, and irregularly bedded locally: more or less argillaceous: becomes softer some places along the strike: gray and brown gray: weathering light gray with iron staining. 6 Obscuried: probably clay or soft siltstone. ?? TOP OF MIDDLE SANDSTONE ?? 4.2' predom. siltstone with some fine so: irreg. bedded: locally ledge forming with unit below. 2.7 2') 2.2' 4.3' 2.5' 3.5' 3.6' 1.4' combine all these fine-grained locally silty irreg bedded in beds 4" -> 6" thick: mostly thin bedded. local massout appearance still shows lamination. whole so may be crossbedded. 3.3 -> inter bedded siltstone and fine sandstone, some clay. fine laminaize siltstone, bedsss up to 6" thick; silty sh beds & plugs of siltstone. moves ever down wavelet. see above 40.8 -> top of so: light rusty brown: fine grained: well laminated: changes from light rusty to white to light rusty down thru the bed: grain size coarse locally: div. fine gr. throught. rusty zones average about an inch thick: rusty zones slightly more resistant to weathering: whole sandstone thinly laminated, in verbedded throughout with more resistent zones of ferruginous as non-ferrugenerous zones weathers white. (This unit not cliff forming underrlies steep slopes.) It's some thing Jurassic silt. zones which seem to be more common near b2sc. Based 3 to 4' and upper 6' are fairly resistant good ledge formers.