U.S. Geological Survey Heavy Metals Program Progress Report 1968: Field Studies, Issues 621-637

Alaska amount of gold analyses anhydrite anomalies aquifers average basin bedrock beds Bolinas Lagoon calcareous Castile chemical Chilkat Inlet Chilkoot Chromitite coal Colo Colorado concentration contact with unit contains copper County Creek cumulate Denver deposits depth district Dolomite drilled Eddy County fault feet flow Formation geochemical GEOLOGICAL SURVEY CIRCULAR Glorieta Sandstone gold content ground water ground-water Haines heat heavy minerals injection jasperoid lakes Limestone material metals miles Mountain Mudstone NW4sec Ogallala percent permafrost permeability Permian phosphate Phosphorite pipe pipeline placer platinum ppm gold ppm in ash quartz range Razin and Rozhkov rhodium rocks Sacramento River Sacramento River discharge salinity samples San Francisco Bay Sandstone sediments Shale Siltstone silver similar to unit south bay Stillwater Complex streams sulfide sulfur temperature Texas thawing thickness tion trench U.S. Geol U.S. Geological Survey Umiat upper waste Water Resources zone