22 base of number one sand bentonite below sand mostly obscured. see 19 N50; 47E 23 base of number one sand 24 base of main clay with bentonite at base red line on photo not 1st sand but 2nd 25 Sandstone over little three - finegrained massive 2 foot bed - iron weathering. a fault offsets hwy back at Van Bibber Creek about 30'. strike N35E 26 Base of main clay with bentonite as in 24 clay dirty with irony zones 27 Base of sandstone above little three.