1 8 Tlie American Geologist. January, ieoo 
his names, viz. at the Black hill (Stoke's hill of professor 
Cragin) it is not attempted to deny, but in proof of the fact 
that they will not apply to other localities the following sec- 
tions are given. They are taken over an area of several miles 
in extent and are believed to represent typical exposures. 
Section i. At Osage rock, three-fourths of a mile 
west of Belvidere. 
Feet. 
5. Kiowa shales to top of hill 50 
4. Champion shell bed i 
3. Stratified, cross-bedded or tilted, soft sandstone with layers 
of dark carbonaceous shale containing fossil leaves. Upper 
part of Osage rock 26 
2. Typical Corral sandstone, massive or cross-bedded in places, 
with pebbles and lenticular masses of bluish clay 16 
f b. Gray or yellowish band 2 
t a. Typical Red-beds from Medicine river, fifty feet below . . 30 
145 
This section was taken at the noted Osage rock, where, 
tradition relates, that ?.n Indian battle was fought. The 
Cheyenne rock from which the Cheyenne sandstone was 
named, is one hundred yards to the east. The face of the 
Osage rock, about thirty feet in hight, forms a perpendicular 
cliff. The line of separation between the lower massive Corral 
and the superjacent tilted sandstone is very plainly marked. 
Sectioji 2. On the south side of the north branch of Walker 
creek, one-lialf tnile west of the forks of the creek, and 
three miles south of Belvidere . 
Feet 
8. Kiowa ±75 
7. Champion I 
6. Soft argillaceous sandstone, white and yellow, sometimes 
as fine as flour 15 
5. Typical Corral, massive, whitish, with pebbles 12 
4. Black shaly carbonaceous clay containing a stratum of Corral 
sandstone. Clay in lenticular masses 6 
3. Gray and brown Corral sandstone with pebbles 12 
2. Grayish bed 2 
I Red-beds +6 
±129 
