i 13 
page 5 (/ - £> 
^ M 
■- 
5. Claystone, sandy, locally a clayey 
r f 
sandstone, gray. 
4. Sandstone, fine to coarse-grained, con- 
glomeratic in lower 6.0 feet. Granules 
and small pebbles of chert and quartzite. 
Chiefly friable with lower Z or 3 feet lo- 
cally a resistant ledge. 
* 
" \ 
3. 7 
8 . 0 
Total thickness of Lakota (rounded) 
239. O' 
Morrison formation (?) 
3. Chert, irregularly bedded, gray-white 
to yellow gray. 
2 . 2 
2. Claystone, locally sandy, with lenses 
slabby, fine-grained sandstone at top. 
Upper half is gray with greenish cast. 
6 . 0 
1. Sandstone, fine-grained, with ve inlets 
gray chert. 
2 . 0 - ? 
Slope wash 
rs / 
A 
r . f ■ 
r - - 
D 
/ 
2 
/ 
