Prosser.|  Cretaceows.—Comanche Series of Kansas. 165 
the Big basin. A little farther down the creek, the Day creek 
dolomite appears and may be followed as a conspicuous stratum 
that rises higher and higher along the bluffs for several miles. 
The high, narrow, and steep divide separating West Branch 
Bear and Little Sandy creeks, extends in a nearly north-and-south 
direction for six miles when its southern end is divided by the 
headwaters of Red Hole creek. The Kiowa shales follow the eastern 
slope of this divide and around its southeastern prolongation, which 
is about three and one half miles northwest of Ashland; then 
around the headwaters of Red Hole creek, turning north again on the 
eastern side of Little Sandy creek until near its upper part. On 
the Fares ranch, perhaps four miles northwest of Ashland, near 
the southeastern limit of the Kiowa shales of this region, the fol- 
lowing section was measured. 
Section of Hill on Fare’s Ranch four miles northwest of Ashland. 
No. INAS 
. Upper part of hill Tertiary marl which has an ap- 64 —349 
parent dip of about 3 deg. to the southeast. 
Plenty of loose fiint in the soil at base of the 
Tertiary sandy deposit of grit. Base of Tertiary 
64 feet. (Perhaps this is an overestimate on ac- 
count of dip of upper part.) 
Cl 
4, Yellowish shales containing some shaly layers of | 53 —285 
limestone in which are specimens of Ostrea. 
Thickness 53 feet. 
=”. Mainly black fine argillaceous shales. This divi- 46 —232 
sion of the section is well shown in several small 
buttes near the end of the high part of the 
divide. In these black shales exposed around 
the sides of the small buttes, vertebrate re- 
mains were found. 
2. Light gray massive sandstone varying to coarse 13—186 
shaly sandstone. Represents Big Basin sand- 
stone of Cragin.! 
1 Professor Cragin referred the sandstone on the Fares ranch on West Bear creek 
to his Big Basin sandstone. See Colorado College Studies, Vol. VI, p. 46. 
