Geothermal Site Assessment Using the National Geothermal Data System (NGDS), with Examples from the Hawthorne Ammunition Depot Area

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"This paper examines the features and functionality of the existing database, its integration into the 50-state NGDS, and its usage in geothermal exploration and development. In particular, we examine the dataset for Hawthorne, NV, which has been supplemented extensively by the Naval Geothermal Program Office and subcontractor Epsilon Systems Solutions, Inc. As we demonstrate, a database user can identify Hawthorne-area thermal anomalies several ways: through spatial interpolation of database geothermometry, temperature gradient calculations, and other geochemical signatures. The ratios of B/Cl, Li/Cl, and As/Cl may identify zones of geothermal potential, as can regional patterns of total dissolved solids, Na-K-Ca ternary diagrams, and trace element ternary diagrams."


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