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

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Chemical and isotopic analyses of Dixie Valley regional waters indicate several distinct groups ranging in recharge age from Pleistocene (<20 ka) to recent (<50a). Valley groundwater is older than water from perennial springs and artesian wells in adjacent ranges, with Clan Alpine range (east) much younger (most <50a) than Stillwater range (west; most >1000a). Geothermal field fluids ({approximately}12-14 ka) appear derived from water similar in composition to non-thermal groundwater observed today in valley artesian wells (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 ... continued below

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Counce, D; Dunlap, C; Goff, F; Huebner, M; Janik, C; Johnson, S et al. August 16, 1999.

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Chemical and isotopic analyses of Dixie Valley regional waters indicate several distinct groups ranging in recharge age from Pleistocene (<20 ka) to recent (<50a). Valley groundwater is older than water from perennial springs and artesian wells in adjacent ranges, with Clan Alpine range (east) much younger (most <50a) than Stillwater range (west; most >1000a). Geothermal field fluids ({approximately}12-14 ka) appear derived from water similar in composition to non-thermal groundwater observed today in valley artesian wells (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 ranges, 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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1000 Kilobytes pages

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  • 8th International Conference on Accelerator Mass Spectrometry, Palasis Auersperg, Vienna (AT), 09/06/1999--09/10/1999

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  • Report No.: UCRL-JC-135417
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 12727
  • Archival Resource Key: ark:/67531/metadc627863

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  • August 16, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 4:06 p.m.

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Counce, D; Dunlap, C; Goff, F; Huebner, M; Janik, C; Johnson, S et al. Regional hydrology of the Dixie Valley geothermal field, Nevada: preliminary interpretations of chemical and isotopic data, article, August 16, 1999; California. (digital.library.unt.edu/ark:/67531/metadc627863/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.