Regional hydrology of the Dixie Valley geothermal field, Nevada: preliminary interpretations of chemical and isotopic data

Gregory Nimz; Cathy Janik; Fraser Goff; Charles Dunlap; Mark Huebner; Dale Counce; Stuart D. Johnson

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USGS · 70074648

Regional hydrology of the Dixie Valley geothermal field, Nevada: preliminary interpretations of chemical and isotopic data

Gregory Nimz·Cathy Janik·Fraser Goff·Charles Dunlap·Mark Huebner·Dale Counce·Stuart D. Johnson

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Abstract

Chemical and isotopic analyses of Dixie Valley regional waters indicated several distinct groups ranging in recharge age from Pleistocene (1000a). Geothermal field fluids (~12-14 ka) appear derived from water similar in composition to non thermal groundwater observed today in valley artesian well (also ~14 ka). Geothermal fluid interaction with mafic rocks (Humboldt Lopolith) appears to be common, and significant reaction with granodiorite may also occur. Despite widespread occurrence of carbonate rocks, large scale chemical interaction appears minor. Age asymmetry of the range, more extensive interaction with deep seated waters in the west, and distribution of springs and artesian wells suggest the existence of a regional upward hydrologic gradient with an axis in proximity to the Stillwater range.

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Source-reported bounding extent: 38.9964° to 40.5018° latitude; -118.9945° to -117.2987° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Gregory Nimz, Cathy Janik, Fraser Goff, Charles Dunlap, Mark Huebner, Dale Counce, Stuart D. Johnson. 1999. Regional hydrology of the Dixie Valley geothermal field, Nevada: preliminary interpretations of chemical and isotopic data. https://pubs.usgs.gov/publication/70074648

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