ProssER.|  Cretaceows.—Comanche Series of Kansas. IDPALs 
The bed of the creek at this locality gives a good exposure of the 
top of the Medicine Lodge gypsum followed by 8 feet of red shales 
with thin layers of gypsiferous rock of greenish tint and somewhat 
arenaceous. ‘The remainder of the Dog Creek shales show con- 
spicuously in the side of the bluff with occasional thin layers of 
gypsum. On top of these shales is a massive bright red sandstone 
which forms the upper 66 feet of the perpendicular bluff on the 
south side of Walker creek. In the Dog Creek shales are light gray 
streaks, and in the Red Biuff sandstone large patches of light gray 
color, in both cases caused by deoxidation. At the top of the Red 
Eluif sandstone are 5 feet of yeilowish-gray shale underlying the 
coarse yellow sands of the Cheyenne. On account of the gradual 
transition from the red shale into these yellowish shales, the break 
between the formations appearing to be at the top, they are re- 
ferred to the Red Bluff sandstone. The Cheyenne is very irregu- 
larly bedded as at the localities of Stokes and Black Hill. Follow- 
ing down the south bank of the creek the gypsum forms a prominent 
ledge at an increasing elevation above creek level. Above the 
gypsum the greater part of the bluffs show exposures of red shales 
and sandstones reaching an elevation apparently higher than the 
base of the Cheyenne sandstones opposite Mr, Abel’s. Still higher 
is a prominent ledge evidently the base of the Cheyenne sandstone, 
indicating a dip to the southwest. The general dip is therefore 
apparently a number of feet per mile in a southwesterly direction. 
There are also small rolls shown in the bluff along the south bank 
of the creek. This locality is perhaps the best to be found in the 
Belvidere region for studying the character of the upper Red-Beds, 
that portion between the Medicine Lodge gypsum and the base of 
the Cheyenne sandstone, inasmuch as there is a complete exposure 
of the rocks intervening between these two horizons. 
The thickness of this pertion of the Red-Beds in this locality is 
116 feet. Only 37 feet of the Cheyenne sandstone was measured, but 
this number does not represent the entire thickness since the section 
does not extend to the top of the formation. 
