538 A. G. LEONARD 



The following section is given both because it is typical of this 

 formation, and also since it includes the greatest thickness of beds 

 seen in any single outcrop. It is exposed in a high steep bluff 

 of the Little Missouri which is surmounted by the Tepee Buttes, 

 and is one and a half miles above the mouth of Deep Creek (Fig. 



12). 



Feet Inches 



Sandstone, to top of Tepee Buttes 35 



Shale, sandy, yellow 17 8 



Coal 4 6 



Shale, dark gray 21 6 



Sandstone, brown, with many ferruginous concretions 23 



Shale, yellow 31 9 



Shale, carbonaceous, brown 9 



Coal 6 3 



Shale, gray 3 2 



Sandstone n 



Shale, dark gray 7 2 



Coal 2 



Shale, dark 3 5 



Coal : . 7 



Shale, carbonaceous, brown 1 



Coal 2 



Shale, carbonaceous, brown 2 



Coal 3 



Sandstone, passing into shale 23 10 



Shale, yellow and brown, sandy in part 24 5 



Sandstone, brown 6 4 



Coal 3 



Shale, yellow and brown 7 4 



Sandstone, passing into shale 18 



Shale and some coal 1 2 



Sandstone 9 



Coal 6 



Shale, carbonaceous, brown 8 



Coal 1 



Shale, brown 2 



Coal 1 



Shale, brown and gray, sandy 23 



Coal 3 



Shale 9 



Coal 5 



