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Publications

Here you will find publications, reports and articles produced by geology, energy, and mineral scientists. For a comprehensive listing of all USGS publications, click the button below.

Filter Total Items: 1358

Physical factors that could restrict mineral supply Physical factors that could restrict mineral supply

Stages in the metal supply process are affected by each of the following physical (geologic) factors: (1) geographic distribution of concentrations of potential ore minerals, (2) depth of these concentrations, (3) mineralogy, (4) grain size of the minerals, and (5) grade and (6) tonnages of the concentrations. For mineral deposits of each type in each geologic and political environment...
Authors
John H. DeYoung, Donald A. Singer

Research in the Geysers-Clear Lake geothermal area, Northern California Research in the Geysers-Clear Lake geothermal area, Northern California

The Geysers-Clear Lake area is one of two places in the world where major vapor-dominated hydrothermal reservoirs are commercially exploited for electric power production. Because energy can be extracted more efficiently from steam than from hot water, vapor-dominated systems are preferable for electric power generation, although most geothermal electric power facilities tap water...

Tectonic relations of carbon dioxide discharges and earthquakes Tectonic relations of carbon dioxide discharges and earthquakes

CO2‐rich springs occur worldwide along major zones of seismicity. They are mostly in young orogenic belts, but some are in areas of rifting continental platforms. Analyses of 13C content indicate that much of the CO2 is derived from the mantle and that other important sources are the metamorphism of marine carbonate‐bearing sedimentary rocks and the degradation of organic material. The...
Authors
W. P. Irwin, Ivan Barnes

Geological Survey research 1980 Geological Survey research 1980

A summary of recent significant scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress.
Authors
Water Resources Division U.S. Geological Survey
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