154 University of Kansas Geological Survey. 
sandstone is a representative of the Cheyenne sandstone. In this 
region Professor Cragin also remarked the similarity of this lime- 
stone to that of No. 5 of his Belvidere section! (which he termed later 
ihe Champion shell-bed) and he also noted another similar stratum 
from 50 to 75 feet higher. 'The gray sandstone and first fossiliferous 
stratum show occasional blotches of red. Along this bluff there is 
not as sharp a line of separation between the top of the Red-Beds 
and the Comanche as is generally seen in the Kiowa-Barber-Co- 
manche area. The Red-Beds extend along the valley of Bluff creek 
to near the base of that part of the canon known as the “amphi- 
theatre’ which is five or six miles above Messing’s house and on 
section 17 township 31s. range 22 w. The top of the Red Beds shows 
in the creek bed just below the prominent point forming the lower 
end of the Amphitheatre. This locality is the one called the Bluff 
creek section by Professor Cragin. The lower end of the Amphi- 
theatre bluff on the eastern side of the creek, was carefully meas- 
ured by Locke level and forms the most accurate section of the 
Comanche series for Bluff creek. 
Amphitheatre Section of Bluff Creek. 
No. Feet. 
6. Near the general level of the high prairie, pinkish 35—228 
colored deposit of marl, slope of which is partly 
covered. This represents the Lake marl slope or 
No. 1 of Professor Cragin’s section. 
». Caleareous sand or grit containing remains of ver- 53—193 
tebrate animals. The division termed the Loup 
Fork grit, or No. 2 of Professor Cragin. 
4. Yellowish sandy shale with thin layers of pinkish 55—140 
shaly limestone forming upper part of this divi- 
sion. Blackish shales with thickness of several 
feet. From 1 to 1$ feet of arenaceous rock con- 
taining large numbers of Gryphaeas. Thickness 
55 feet. No. 3 of Cragin’s section. 
3. Yellowish soft and friable sandstone which forms a 10—85 
conspicuous stratum near the middle of the 
1F. W. Cragin, Bulletin Washburn College Laboratory Natural History, Vol. II, 
p. 79, Topeka. 
