70 University of Kansas Geological Survey. 
1. Yellowish and bluish argillaceous shales, with some 60—60 
red streaks. Wellington. 
Level of Smoky Hill river. 
Two miles directly south of the four corners, one mile east of 
the Berwick school house, is a most interesting exposure of the 
Permian and Cretaceous line of contact. The rocks show along the 
highway at the southwest corner of section 27 Walnut township, and 
in the field in the southeast corner of section 28. The section is as 
follows: 
3. Brownish, iron stained sandstone containing J/entor fossils. 
2. Slightly pinkish shell limestone 1 foot thick, containing abun- 
dant specimens of Ostrea. Kiowa. 
1. Yellowish argillaceous shales immediately below the limestone. 
Sunilar blue, yellowish and slightly reddish shales continue 
from 150 to 160 feet to the level of the Smoky Hill river. 
Wellington. 
It will be noticed on comparing the two sections just given, that 
in the Mentor, the base of the Mentor beds is approximately 60 feet 
above the river level; while in the second section, only two miles 
south, the base of the Kiowa is from 150 to 160 feet above the 
river level, or from 90 to 100 feet higher than in the Mentor sec- 
tion. The uncertainty as to the exact base of the Mentor beds in the 
Mentor section may reduce this difference somewhat, still there will 
be a decided discrepancy between them which is not explained by 
foiding er dip. The floor upon which the Cretaceous was deposited 
was evidently a decidedly uneven one. 
On the western side of the Smoky Hill river these shales are 
developed to a greater thickness than on the eastern. Professor 
Cragin has identified them as belonging to the Wellington, stating 
that they occur at intervals in the foot of the bluffs of Spring creek 
from Salina to a point in the southwest vicinity of Bavaria.’ The 
Wellington shales were noted at a number of exposures from Ba- 
varia to the vicinity of the summit of the ridge three miles south, 
but only a number of short sections were found. One mile southwest 
of Bavaria on the Spring Creek bluff are yellowish shales similar 
to those of No. 3 in the Upper Mill section southeast of Salina. 
1 F. W. Cragin, Colorado College Studies, Vol. VI, p. 1%. 
