8 Gray sandy clay shale,con- 
~~ taining nodules, Similar to 
No. 6 
7. Finely laminated sand 
Gray sandy clay shale with 
ferruginous bands 
Chocolate-brown sandy clay 
Shale 
Gray clay shale 
Sandy gray clay, containing 
abundant siliceous iron nod- 
ules, arranged mostly in 
bands at certain horizon. 
These hard nodules project 
from the surface of the 
softer clay and also cap 
small elay columns. 
Unexposed; includes some 
sand 
Lignite, outcropping in bottom 
of ravine near the east end of 
the butte, exposed 
“r a <> ; Po > sit ? Sp | 
Nos.2&8 d 29 of the 
*" 
wy? “sy iD et Kh i 7 rt aN 4 es “| ar “3° 
fr te Ne GO Na UP de ® ® 

