HOT WATER SUPPLY OF THE HOT SPRINGS 



433 



Hot Springs Mountain. The character of these folds is brought 

 out in Figures i and 2. 



GEOLOGY OF THE SPRINGS AREA 



The hot water rises in an area of about 20 acres that Kes along 

 the east side of Hot Springs Creek, at the southwest base of Hot 

 Springs Mountain. One spring lies west of the creek. Five 

 are said to have risen in the bed, though only one of these can now 

 be found. The spring area is marked by a deposit of calcareous 

 tufa (travertine) from a few inches to eight feet thick over the 

 older rocks. To the tufa the springs are daily making additions, 

 though the present structures for collecting the waters have reduced 

 the rate of formation of the tufa. 



Hot Springs Mtn. 



Fig. 2.— Geologic cross-section from Sugarloaf Mountain to Hot Springs 

 Mountain (line H~H' , Fig. i), after Purdue with modifications. 



The grounds and springs were carefully mapped by Captain 

 R. R. Stevens, U.S.A., in 1890, and he mapped the tufa, hard-rock 

 outcrops, and springs. Figure 3 reproduces his boundaries for 

 the tufa and for rock outcrops, except that corrections in the rock 

 outcrops have been made at critical points during this investigation. 

 On this map (Fig. 3), the boundaries of the geologic formations have 

 been traced. Landscape gardening, roads, walks, and buildings 

 all tend to conceal outcrops and in a number of places, as stated 

 below, the location of geologic boundaries is uncertain. 



The Hot Springs sandstone outcrops on Fountain Street, in 

 Happy Hollow, where it is nearly vertical. From this point it 

 extends along the foot of Hot Springs Mountain southwesterly 



