AIN-49-08. 16. Exposure of sandstone with interbedded clay, on top of rim ledge of hogback. Section #1 (ascending) Obscured 15.0t Fine to med. gr. massive to ledgy, cross-laminated sandstone, grey fresh brown-weathering 3.8 Finely blocky Silty carb. clay, hard, plant frags. blocky fracture About 1" of bentonite-like material 2.0 from top. [This bed is Sample 2] Below this is 1/2" bed hard silty clay then soft highly silty, dk brownish cast shale, becoming progress siltier down ward. Bszl .9 not fresh. Sample #1 is at upper 2' above bentonitic layer. 2.0 Siltstone grading upward to fine-grass, lower 2t inches somewhat argill.,all hard, rusty brown weath.-some rootlet impressions. 3.7 Shaly zone 3.3 Dk gr. clay sh. (weath.) Sample#3 3.8 <- Sandstone, lower 8 has some shell petings, thin beds, locally frizble, upper 3.0 is fine-gr with siltst. zones, plant frags weath: rusty br.