554 



KIRK BRYAN 



lie along a fault at the foot of Rosamond Buttes but probably not 

 exactly on the fault trace (Fig. 20). This fault is represented by 

 an escarpment in the alluvium west of Willow Springs, from 50 to 

 100 feet in height and extending for a distance of 5 miles/ The 



Fig. 20. — Map of Antelope Valley, California, showing fracture artesian springs. 

 (After Johnson.) 



irregular alignment of these springs is best explained by assuming 

 that there are associated with the main fault a number of sub- 

 sidiary but parallel fractures which permit the artesian water to 

 rise. Alternative explanations are offered by Johnson, but the 

 absence of springs except along this general line makes other 



' H. R. Johnson, op. ciL, pp. 21 and 49. 



