72145 SADDLE BUTTE BILLINGS Co . N. D. 20 FT OF INOURXSED. yellow to reddish Br. med gr. MILACEOUS whss in some areas has carb TR. TEND of BUTTE NE Section TO TOP OF BUTTE from BASE OF EXPOSURE BASE 0 I Very poor exposure begins in sandy br mg nonmic slope wash above 2 1/2 covered 1 I covered 2 I covered between 2 1/2' & 2I sandy slope wash becoming mic. up 2I+3' friable, mg < 19% mic sand 3I mic. slope wash 3+3' wealth clay-intrusive core yel br. in slope wash