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A Model Of The Hydrothermal System At Casa Diablo In Long Valley, California, Based On Resistivity Profiles And Soil Mercury Analyses, John David Arfstrom
A Model Of The Hydrothermal System At Casa Diablo In Long Valley, California, Based On Resistivity Profiles And Soil Mercury Analyses, John David Arfstrom
FIU Electronic Theses and Dissertations
A description and model of the near-surface hydrothermal system at Casa Diablo, with its implications for the larger-scale hydrothermal system of Long Valley, California, is presented. The data include resistivity profiles with penetrations to three different depth ranges, and analyses of inorganic mercury concentrations in 144 soil samples taken over a 1.3 by 1.7 km area. Analyses of the data together with the mapping of active surface hydrothermal features (fumaroles, mudpots, etc.), has revealed that the relationship between the hydrothermal system, surface hydrothermal activity, and mercury anomalies is strongly controlled by faults and topography. There are, however, more subtle factors …