fairly hard beds, one of 0.5 at top. W 0.2 Lower 0.1 is waxy gray bentonite clay, upper 0.1 black shale. X. 5.3 Argillaceous siltstone, blocky fozcture, hard. Upper 0.6 local ledge Y. 0.3 Lower 0.2 is waxy gray bentonitic clay, upper is dk gray shale. Z. 2.1 Argillaceous siltstone as in X AA. 2.4 Siltstone and fine sandstone in thin beds, silts is argillaceous, some limy beds and Fe brown concs. of limy matter. Forms persistent Fe brown ledge. BB. 23.0 Argillaceous siltstone grading upward into fine argill SS. Lowr 15' fairly argill, with minor shaly siltstn. Upper 8' sandy beds begin to appear. This end CC above are similar to unit R. BB grades into ledge of CC CC. 18.9 Sandstone and siltstn. Fine, argill, massive, irreg bedding with argill, dk ptngs. + carb frags. whole forms crumbly, blocky weathering ledge.. Upper Note— At top surface SS is thin shly break with light brn silt bed with 44