Sheep Mountain - Greybull section Starting at soil zone top of Etacung block of Clayealy capped by Greybull near where it plunges under Alluvium to s. (14) 5.0-? Sandstone, fine-gr, ivvey, thin bedded with silty + sandy partings. sh + clstn. (13) 1.4 Claystone silty, massive, grey with o-b stained "veinlets" becomes siltier at base grades to unit below. (12) 2.7 Siltstone, massive gray, clayey at top becoming finely downward grading to unit below. weeths yellow + gray (11) 2.8 Siltstone, massive hard, not clayey - weeths yellow brn, blocky some thin lenses clayey (10) 1.0 Chiefly a brown shale, loc. lignitic, in lower 0.6, grading up to hard compact blue-grey silty clay. 9.