CO{sub 2} flux measurements across portions of the Dixie Valley geothermal system, Nevada
- Los Alamos National Lab., NM (United States). Earth and Environmental Sciences Div.
- Geological Survey, Menlo Park, CA (United States)
- Oxbow Power Services, Reno, NV (United States)
A map of the CO{sub 2} flux across a newly formed area of plant kill in the NW part of the Dixie Valley geothermal system was constructed to monitor potential growth of a fumarole field. Flux measurements were recorded using a LI-COR infrared analyzer. Sample locations were restricted to areas within and near the dead zone. The data delineate two areas of high CO{sub 2} flux in different topographic settings. Older fumaroles along the Stillwater range front produce large volumes of CO{sub 2} at high temperatures. High CO{sub 2} flux values were also recorded at sites along a series of recently formed ground fractures at the base of the dead zone. The two areas are connected by a zone of partial plant kill and moderate flux on an alluvial fan. Results from this study indicate a close association between the range front fumaroles and the dead zone fractures. The goals of this study are to characterize recharge to the geothermal system, provide geochemical monitoring of reservoir fluids and to examine the temporal and spatial distribution of the CO{sub 2} flux in the dead zone. This paper reports the results of the initial CO{sub 2} flux measurements taken in October, 1997.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Management and Administration, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 303959
- Report Number(s):
- LA-UR-98-2484; CONF-981069-; ON: DE99001251; TRN: AHC29904%%32
- Resource Relation:
- Conference: Geothermal Resources Council, San Diego, CA (United States), 4-7 Oct 1998; Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
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