578 



wherry: clay from volcanic dust 



1 



8 



Fig. 1. White areas represent clay, horizontal-lined ones shale, and dotted ones 

 alternations of clay and shale, Scale, y inch = 1 foot. The bottom of the main 

 clay bed is assumed to be at the same horizon in all sections; the 1-inch clay bed 

 lying about 5 feet above the top of the main bed is connected by broken lines. 



1. Pit on "Hat No. 1 Lode," 3 miles south of Buffalo Gap, South Dakota. 



2. Hill slopes on "Hat No. 2 Lode," \ mile south of No. 1. 



3. Hill slopes on "Hat No. 5 Lode," 1 mile south of No. 2. 



4. Cliff at assessment tunnel, f mile south of No. 3. 



5. Hill slopes | mile southwest of No. 4. 



6. Hill slopes along Hat Creek, 1 mile west of Ardmore, South Dakota, about 

 40 miles southwest of No. 5. 



