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The results of geologic, geochemical, and mining activity and production surveys made in the Buttermilk Roadless Area indicate little or no promise for the discovery of metallic or energy resources in the area. Glacial till and other types of surficial alluvium cover the bedrock to a depth of tens and probably hundreds of feet preventing examination and evaluation of possible minerals that might be present in the bedrock. No mining claims are known to be in the area and the nearest mining activity is too far removed to reasonably project mineralization into the buried bedrock of the roadless area. The glacial till has little promise for placer deposits because the eroded debris has had little or no sorting and concentration by natural hydraulic action.
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BUTTERMILK ROADLESS AREAS, CALIFORNIA.
Geological Survey Professional Paper (United States)