ProsserR.|  Cretaceows.—Comanche Series of Kansas. 167 
No. Feet. 
1. Light gray sandstone, part of the exposure mottled 100—100 
with red at top, then Red-Beds. From top of the 
Reds to the junction of Chapman and Little 
Sandy creeks 100 feet. 
About a mile and a haijf northwest of the section just described, 
on the west bank of Chapman creek is a perpendicular ledge of 
Red Bluff sandstone, which rises from the creek level some 50 feet 
and carries above it a sloping bank of Kiowa shales which in turn 
are capped by Tertiary. This locality is probably on section 3, town- 
ship 32 s., range 24 w. 
Section of Cliff on Chapman Creek. 
No. Feet. 
5. Tertiary on ridge above; junction with Kiowa not 
sharply marked. 
&, Yellowish shales alternating with pinkish shaly 48—141 
limestone containing Ostreas. 48 feet. 
5. black argillaceous shales containing vertebrate re- 43— 98 
mains. 43 feet. 
2. Brownish sandstone to coarse arenaceous shales.... 
. Red arenaceous shale varying in thickness as ex- 
posed in the side of the cliff from 2 to 5 feet. 
Prominent stratum of Day creek dolomite. Be- 
low this red sandstones to creek level. From top 
of brown sandstone to creek level 55 feet. 
The above section gives 86 feet of Kiowa. In the section of the 
hill between Chapman and Little Sandy creeks, a mile and a half 
southeast, the thickness of that formation was determined as 145 
feet. In the section just described, perhaps the Kiowa shale has 
a greater thickness than indicated, since the top is not sharply 
marked. However, it is considerably thinner than in the section 
to the southeast. In the bluffs, the dolomite forms a conspicuous 
stratum which may be followed along the creek for some distance. 
Higher is the stratum of red, sandy shale whicb sear each end of 
the cliff is thicker than in the central part, being 5 at the ends and 
perhaps 2 feet near the center. This varying thickness is apparent 
evidence of unconformability by erosion. Perhaps it may be ex- 
pjained as due to varying thickness in the original deposition of the 
bend 
DN— 95 
