408 
TURNER. 
coincide with the east fault scarp of the Sierra Nevada as 
outlined by Le Conte and Gilbert and extended by Diller. 
The amount of faulting since the deposit of the lake beds 
is to be measured in tens and not hundreds of feet. 
If the course of an ancient river as described be later sub¬ 
stantiated, the amount of faulting since perhaps Eocene 
times may be approximately measured. 
The literature bearing on the elevation of the Sierra is 
briefly reviewed. Gilbert, Le Conte, Diller, and Russell re¬ 
gard the Sierra Nevada as being a tilted block of late origin, 
while Whitney, Becker, and Ross E. Browne believe the 
range to have had nearly its present elevation since the post- 
Mariposa upheaval. 
PUBLICATIONS REFERRED TO. 
I. Becker, G. F. “The Structure of a Portion of the Sierra Ne¬ 
vada of California.” Bull. Geol. Soc. Am., vol. 2, pp. 49-74, 
Jan., 1891. 
II. Browne, Ross E- “The Ancient River Beds of the Forest Hill 
Divide.” Tenth Ann. Rep. State Mineralogist of California, 
1890, pp. 435-465, with a map in two sheets. 
III. DiEEER, J. S. “ Notes on the Geology of Northern California.” 
Bull. No. 33, U. S. Geol. Survey, 1886. 
IV. DiEEER, J. S. “ Geology of the Lassen Peak District.” Eighth 
Ann. Rep. Director U. S. Geol. Survey, pp. 395-432, with a 
geological map. 
V. GiEBERT, G. K. Review of “Whitney’s Climatic Changes.” 
Science, vol. I, 1883, pp. 141-142, 169-173, and 192-195. 
VI. GieberT. G. K. Lake Bonneville. Monograph I, U. S. Geol. 
Survey, 1890. 
VII. Hopkins, Wieeiam. “ Researches in Physical Geology. ” Phil. 
Trans. Roy. Soc., London, 1842, p. 43. 
VIII. LE Conte, Joseph. “ A Theory of the Formation of the Great 
Features of the Earth’s Surface.” Am. Jour. Sci., Third 
Series, vol. IV, 1872, pp. 345~355 and 460-472. 
IX. LE ConTE, JOSEPH. “ On the Great Lava Floods of the West, 
and on the Structure and Age of the Cascade Mountains.” 
Am. Jour. Sci., Third Series, vol. VII, 1874, pp. 167-180 and 
257-267. 
