Michael F. Diggles E. A. Du Bray (compiler) David A. Dellinger 1982 <p>A geochemical survey of the John Muir Wilderness was conducted by the U.S. Geological Survey between 1969 and 1978.&nbsp; The 755-mi²<span id="_mce_caret" data-mce-bogus="1" data-mce-type="format-caret"> (1,956-km²<span id="_mce_caret" data-mce-bogus="1" data-mce-type="format-caret">) wilderness is located in the central Sierra Nevada, Calif. (fig. 1). Stream-sediment samples were collected at 1,434 sites in the wilderness and immediately adjacent areas.&nbsp; Analytical data for these samples and a map of smapling sites are presented by du Bray and Dellinger (1980) and Diggles and others (1981).&nbsp; A geologic map of the area was compiled by du Bray (1981).&nbsp; These maps and tables present the results of the analysis of geochemical data for lead, zinc, gold, silver, arsenic, chromium, molybdenum, manganese, tungsten, tin, copper, and nickel.&nbsp; These are elements of economic interest which have historically been found in mineral deposits of the Sierra Nevada or other geologically similar areas.</span></span></p> application/pdf 10.3133/mf1185B en U.S. Geological Survey Maps and interpretation of geochemical anomalies in the John Muir Wilderness, Fresno, Inyo, Madera and Mono counties, California reports