132 — University of Kansas Geological Survey. 
About two miles below the forks of Medicine Lodge river and on 
its south side is a prominent butte the sides of which near the 
summit are covered with large blocks of dark brown to iron-colored 
very quartzitic sandstone. This stratum is regarded as being an 
excellent exposure of the so-called Dakota sandstone of southern 
Kansas, and is probably several miles east of the exposure for 
which Professor Cragin has proposed the name Reeder sandstone 
referring it with question to the Dakota formation.! 
Section of Butte South of Medicine Lodge River. 
No. Feet. 
5. At the top a Tertiary cap of white rocks which 
cover all the high prairie to the south and west. 
4, On the east side of the butte the rock is mainly a 30—170 
yellowish friable sandstone containing plenty of 
iron concretions. In some respects this rock is 
similar to the Tertiary sands rather than the 
Dakota though the greater part of it is very 
similar to the ordinary exposures of Dakota 
sandstone. On the north side of the mound, the 
upper part of this division is partly covered but 
the lower part is a massive stratum of iron 
colored concretionary sandstone. | 
3. Light gray to yellowish sand partly consolidated. 10—140 
Base of Dakota-like rock 130 feet above river 
level. 
2. Partly covered but showing argillaceous and cal- 25—130 
careous shales. Kiowa. 
1. At 105 feet above river level fossiliferous sand- 105—105 
stone, while pinkish shaly limestones are well ex- 
posed in the side of the hill 80 feet above river 
level. | 
The Dakota-like sandstone of this butte is the thickest exposure 
of that rock in the Belvidere region and also the one most closely 
resembling the Dakota formation of central Kansas. 
On the south side of the Medicine Lodge valley ‘the Kiowa 
shales are shown along the sides of the bluffs, with the Cheyenne at 
1 American Geology, vol. XVI, p. 381. 
