POST- PLEISTOCENE ELEVATION OF INYO RANGE 



547 



level of the lake beds at the margin of the valley and the 

 highest point in Waucobi Canyon, or 3000 feet. There are so 

 many factors that might be considered with more data, that only 

 an approximation can now be made of the total displacement. 

 We are justified, I think, in placing it at about 3000 feet, and 



Fig. 5. View of southeastern portion of Deep Spring Valley, showing pond near 

 spring, and the north face of the ridge that extends northeastward from the Inyo 

 Range, a, Position of fault cutting through the ridge ; b, southwestern end of the 

 ridge where it unites with the Inyo Range. 



thus recording the fact that a movement of considerable magni- 

 tude has occurred. That the movement is comparatively recent 

 is proved by the characters of the lake beds and their contained 

 fossils, which indicate the age of the deposits to be late Pliocene 

 or Pleistocene. 



It is interesting to note in this connection the account of the 

 earthquake that occurred in Owens Valley in 1872. This earth- 

 quake, according to Professor J. D. Whitney,' originated in 

 Owens Valley, and its occurrence was accompanied by a sinking 

 of strips of land. Mr. G. K. Gilbert visited Owens Valley 

 eleven years later, and in his observations on the subject he says 



'The Owens Valley earthcjuake. Overland Monthly, Vol. IX, 1872, pp. 130-140 

 and 266-278. 



