DESCRIPTION OF REGION 



421 



slumping or other causes, whereas exposures in the valley generally show 

 the strata to be flat-lying, in conformity with the general dip of the 

 region. 



In this part of the Great Plains are found here and there groups of 

 hills, such as those named above, and other similar ones, such as Misty 

 Hills, Neutral Hills, etcetera, which rise a few hundred feet above the 

 generally flat, treeless, but well grassed plain. 



Cretaceous formations underlie the surficial deposits of the plain to 

 depths of 2,000 to 3,000 feet. The outcropping strata in the immediate 

 vicinity of the hills, here described as showing abnormal deformation, 



Figure 2. — General Yieio of Tit Hills 



belong in every case to the Belly River formation. With the exception 

 of the abnormal dips in the few hills referred to above, all the evidence 

 points to uniform but gently dipping beds over the whole area ; but as the 

 formations are soft, exposures poor, and the width of the outcrop great, 

 it is difficult to work out detailed structure. 



Mud Buttes 



As the conclusions herein set forth were derived largely from a brief 

 study of the Mud Buttes, it is proper that they should be described in 

 some detail. 



The Mud Buttes are situated 9 miles south of Monitor, a station on a 

 branch of the Canadian Pacific Railway, and cover parts of sections 19 

 and 20, township 33 north, range 4, west of fourth meridian. 



