01176cam a22003131 4500 gs 68000196 DLC 20260227111422.0 711213s1968 dcuab b 00010 eng c gs 68000196 //r852 U.S. Geol. Survey. Libr. n-us-ca QE75 .P9 no. 597 QE389.62 .S52 Copy 2. 549.6/09794/87 Sheppard, Richard A. Distribution and genesis of authigenic silicate minerals in tuffs of Pleistocene Lake Tecopa, Inyo County, California, by Richard A. Sheppard and Arthur J. Gude, 3d. Washington, U.S. Govt. Print. Off., 1968. iv, 38 p. illus., maps. 29 cm. $0.40 (pbk.) United States. Geological Survey. Professional paper 597 Bibliography: p. 36-38. Silicates. Geology, Stratigraphic Pleistocene. Geology California Inyo Co. Volcanic ash, tuff, etc. California Inyo Co. Gude, Arthur J. (Arthur James), 1917- joint author. Geological Survey professional paper ; 597. 30439 30439