GEOLOGY OF WEST COAST REGION OF UNITED STATES 



4. There are a number of quicksilver mines in Lake and 

 Napa counties, which can be reached by livery team 

 from Calistoga or Middletown. 



VI. Randsburg-Johannesburg Mines and Searles 

 Lake: 



Headquarters at St. Charles Hotel, Johannesburg. From this 

 point the following may be reached by stage or auto- 

 mobile: 



1. Yellow Aster Gold Mine at Randsburg. 



2. Tungsten Mines at Atolia. 



3. Searles Lake, Trona, where the American Trona Com- 



pany is operating. Trona may also be reached by a 

 new railroad from Searles. 



4. Skiddoo Mine, reached by stage or automobile from 



Trona. 



There are a number of other isolated mines 

 which probably would not be of particular interest 

 to the average visitor; for instance, the American 

 Girl Mine near Ogilby, California, twelve miles west 

 of Yuma; the mines of the Julian district, about 

 sixty miles east of San Diego, reached most con- 

 veniently by automobile; the Dairy Farm Mine, 

 reached by automobile or livery team from Lincoln, 

 California; the mines near the line of the Western 

 Pacific through Plumas County; etc. 



REFERENCES 



AUBREY, L. E. 



1906. The structural and industrial materials of California. 



Calif. State Min. Bur., Bull. 38, 412 pp., maps. 

 1908. Copper resources of California. Calif. State Min. 



Bur., Bull. 50, 366 pp., maps, illus. 

 1910. Gold dredging in California. Calif. State Min. Bur., 



Bull. 57, 312 pp., maps, illus. 

 DILLER, J. S. 



1893. Cretaceous and early Tertiary of northern California 



and Oregon. Geol. Soc. Amer., Bull., vol. 4, pp. 

 205-224, pi. 4. (An excellent summary of Cre- 

 taceous stratigraphy.) 



1894. Tertiary revolution in the topography of the Pacific 



Coast. U. S. G. S., 14th Ann. Rep., pt. 2, pp. 397- 

 434, pis. 40-47. (An important paper on the topo- 

 graphy and structure of the Pacific Coast.) 



1902. Topographic development of the Klamath Mountains. 

 U. S. G. S., Bull. 196, 69 pp., 13 pis. 



1914. The eruption of Lassen Peak, California. Seis. Soc. 



Amer., Bull., vol. 4, pp. 103-107, illus. 

 DILLER, J. S., and PATTON, H. B. 



1902. The geology and petrography of Crater Lake National 



Park. U. S. G. S., Prof. Paper no. 3, 167 pp., 19 

 pis. (A classic description of this interesting 

 region.) 

 FAIRBANKS, H. W. 



1895. Review of our knowledge of the geology of the Cali- 



fornia Coast Ranges. Geol. Soc. Amer., Bull., vol. 

 6, pp. 71-102. (Discusses the Franciscan series and 

 serpentine intrusives, and the stratigraphy and 

 structure of the Coast Ranges.) 

 FORSTNER, W. 



1903. Quicksilver resources of California. Calif. State Min. 



Bur., Bull. 27, 273 pp., pis., maps. 



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