270 



This valley is from a mile to a mile and a quarter in width. About 

 two miles northeast of the hot springs, where West Branch of Gulpha 

 Creek cuts through North Mountain, is a limited area with an elevation 

 of about 620 feet. The greater part of the surface, however, stands above 

 the 700-foot contour, and the highest hills exceed 800 feet. The highest 

 elevation at which any of the springs emerge is about 640 feet. 



Fig. 1. Relief Map of the Hot Springs Area. 



Stratigraphy of the Area About the Hot Springs. — The surface rocks 

 about the hot springs are shown in the following section : 3 



3 With the exception of the Stanley shale and the Hot Springs sandstone, these 

 names were first applied to the formations as they appear in Montgomery County, 

 Arkansas. 



