126 University of Kansas Geological Survey. 
tedded brownish-yellow sandstone of the Cheyenne. In the base of 
this sandstone are quartz pebbles. The Cheyenne rests on an 
irregularly eroded surface of the gray shale. The picture called the 
Contact of Cheyenne sandstone and Red-beds showing unconformability— 
Plate X VI—shows nicely the upper part of the Red-beds with the 
contact between the latter and the Cheyenne sandstone. In the 
picture the top of the Reds is shown by Mr. Beede’s left foot, the 
bottom of the gray shales 3 feet in thickness by his right foot and 
the line of unconformability by his hand. A conspicuous place of 
erosion in the pre-Cheyenne rocks shows just back of Mr. Beede. 
This locality is an important one in any discussion concerning the 
age of the Cheyenne and Red-beds since it shows conclusively that 
at least in this ravine.they are clearly separated by a line of promi- 
nent unconformability which of course indicates a physical break 
and therefore a time interval of considerable duration between the 
close of the Red-beds epoch and the deposition of the Cheyenne 
sandstone. 
To the north of Stokes hill is Walker creek, a southern brancn 
of Medicine Lodge river, along which are fine exposures of the upper 
Reds and the Cheyenne sandstone. On the southern bank, opposite 
Mr. Frank Abel’s house, at a point two miles northwest of Stokes 
hill and three and one half miles southeast of Belvidere, a section 
of the bluff was accurately measured by means of the tape and Locke 
level. This place is located on the southwest corner of the north- 
west quarter section 26, Lake township, Kiowa county. 
Section of Walker Creek Bluff. 
Feet. 
Cheyenne sandstone, light gray and yellowish colored..... 37—158 
partly cross-bedded. Base of Cheyenne sandstone. 
WellowashWorayashialenere ya niente llcie rollers et ears 5—121 
Red sshales esi seuc tA ney NG RIE a eae eae ea 14—116 
Red, soft, friable sandstone. Forms the Red Blujf.... 66—102 
sandstone of Cragin. 
Red shale containing thin layers of gypsum. Dog.... 31— 36 
Oreek shales of Cragin. 
Massive white to light colored gypsum. Medicine.... 5— 
Lodge gypsum of Cragin. 
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