MOHAWK LAKE BEDS. 
BY 
Henry Ward Turner. 
{Read before the Society January 81, 1891 , and published by 
permission of the Director of the U. S. Geological Survey .) 
Contents. 
Page. 
General remarks----------385 
Pleistocene Eake Beds - 386 
Earlier Eake Beds______—------388 
Pliocene Beds__.*------— 390 
Glacial Moraines in relation to the Eake Beds---- 392 
Faulting in the Eake Beds------ 396 
Relation of the Mohawk Valley Fault to the Structure of the Sierra 
Nevada- 396 
Resume--- 407 
Publications referred to—------------- 408 
General Remarks. 
The facts presented in this paper were gathered in the 
course of my regular field-work as assistant of Mr. G. F. 
Becker, geologist in charge of the California Division of the 
United States Geological Survey. 
For assistap.ce in connection with the publication I am 
indebted to Mr. Becker, to Mr. J. S. Diller, and to Mr. W J 
McGee. 
The memoirs and papers referred to will be found in a list 
at the end. 
On the accompanying map, Plate No. 4, the areas indi¬ 
cated as Pre-tertiary include all of the rocks known ordinarily 
49—Bull. Phil. Soc., Wash., Vol. ll. ( 385 ) 
