L 10-2.0 Siltstone, more resistant than above, chiefly massive with some sandy siltstone; x-lzm and lzm are common with some mixed zones as in above. Chiefly gray with upper 0.4 t Fe impreg, red wash which gives whole unit purplish cast. Grades to unit below. K 4.8 clayey. Siltstone and minor silty claystone. Dark gray to black in middle part, upper 1.5 t somewhat lighter, brownish to purple cast, siltier. Middle part is similar to 3.5 siltstone above, is clayey has irrec silt that may once have been lzm or zo, and scattered red-wash Fe specks. Along strike lower notch zone sets this lower in becomes much siltier part is with gray to brown gray silt light gray in in irrec, patches of gray abrupt change clayey silt - still has color from local Fe red specks. black above. Besides 0.1 or less is red Fe impreg zone on SS below.