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Icelandic basaltic geothermal field: A natural analog for nuclear waste isolation in basalt

Description: Analog studies of Icelandic geothermal fields have shown that the design of nuclear waste repositories in basalt can benefit by comparison to the data base already available from the development of these geothermal fields. A high degree of similarity exists between these two systems: their petrology, groundwater geochemistry, mineral solubilities, hydrologic parameters, temperature ranges, water-rock redox equilibria, hydrothermal pH values, and secondary mineralogies all show considerable over… more
Date: November 21, 1984
Creator: Ulmer, G. C. & Grandstaff, D. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of Direct-Push Vadose Zone Sediments from the 241-B and 241-BX Tank Farms

Description: Geochemical tests provide evidence for the transit of a plume of caustic waste solution through the sediment column at the Hanford 241-B and -BX Tank Farms. Direct-push samples recovered from boreholes surrounding Tanks 241-B-110 and 241-BX-102 and related waste transfer lines and diversion boxes included sediments typical of those previously recovered from other localities on the Hanford Site. The Hanford formation sediments are dominantly quartzo-feldspathic sands strewn with lithic fragments… more
Date: December 21, 2007
Creator: Brown, Christopher F.; Icenhower, Jonathan P.; Um, Wooyong; Bjornstad, Bruce N.; Valenta, Michelle M.; Iovin, Cristian et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Earth Sciences Division Research Summaries 2006-2007

Description: Research in earth and atmospheric sciences has become increasingly important in light of the energy, climate change, and other environmental issues facing the United States and the world. The development of new energy resources other than fossil hydrocarbons, the safe disposal of nuclear waste and greenhouse gases, and a detailed understanding of the climatic consequences of our energy choices are all critical to meeting energy needs while ensuring environmental safety. The cleanup of undergrou… more
Date: July 21, 2008
Creator: DePaolo, Donald & DePaolo, Donald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hot Dry Rock Overview at Los Alamos

Description: The Hot Dry Rock (HDR) geothermal energy program is a renewable energy program that can contribute significantly to the nation's balanced and diversified energy mix. Having extracted energy from the first Fenton Hill HDR reservoir for about 400 days, and from the second reservoir for 30 days in a preliminary test, Los Alamos is focusing on the Long Term Flow Test and reservoir studies. Current budget limitations have slowed preparations thus delaying the start date of that test. The test is pla… more
Date: March 21, 1989
Creator: Berger, Michael & Hendron, Robert H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recent Developments in Geology, Geochemistry and Geophysics Applied to Hydrothermal Reservoir Mapping and Monitoring

Description: Progress in research and development of four of UURI's projects are reviewed in this paper. First, the development of chemical tracers has evolved to a field test in the Dixie Valley geothermal system in Nevada. Second, the measurement of in situ stress continues to demonstrate changes with location in the orientation of stress within active geothermal systems. Third, we continue to develop hydrologic models of geothermal systems based upon fluid inclusion measurements. Fourth, we are developin… more
Date: March 21, 1989
Creator: Moore, Joseph N.; Nielson, Dennis L. & Wright, Phillip M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Field Study of Tracer and Geochemistry Behavior During Hydraulic Fracturing of a Hot Dry Rock Geothermal Reservoir

Description: Tracer and geochemistry measurements in fractured Hot Dry Rock (HDR) geothermal reservoirs are usually performed after a fracture connection has been established and constant, nearly equal inlet and outlet flow rates have been achieved. however, during hydraulic fracturing experiments designed to create a low-impedance fracture connection between two wells, the inlet and outlet flow rates can be dramatically different and can vary during the test, forcing us to revise the common analytical meth… more
Date: January 21, 1986
Creator: Robinson, Bruce A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary - Hot Dry Rock R&D Strategies and Applications

Description: In geothermal energy technology, the hydrothermal systems rely on volcanic hot rocks being fortuitously co-located with an adequate supply of natural ground water, usually at some considerable depth within the earth. This represents essentially two accidents in the same place, and the occurrence is relatively rare. Yellowstone Park and the desert valley of southern California are the most noteworthy US. examples. Since the heat is the energy needed, if we could just get the water down to it and… more
Date: March 21, 1989
Creator: Tennyson, George P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Coupled Geochemical and Hydrological Processes Governing the Fate and Transport of Radionuclides and Toxic Metals Beneath the Hanford Tank Farms

Description: The goal of this research was to provide an improved understanding and predictive capability of coupled hydrological and geochemical mechanisms that are responsible for the accelerated migration and immobilization of radionuclides and toxic metals in the badose zone beneath the Hanford Tank Farms.
Date: July 21, 2006
Creator: Fendorf, Scott & Jardine, Phil
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In-Drift Precipitates/Salts Model

Description: As directed by ''Technical Work Plan For: Engineered Barrier System Department Modeling and Testing FY03 Work Activities'' (BSC 2003 [165601]), the In-Drift Precipitates/Salts (IDPS) model is developed and refined to predict the aqueous geochemical effects of evaporation in the proposed repository. The purpose of this work is to provide a model for describing and predicting the postclosure effects of evaporation and deliquescence on the chemical composition of water within the proposed Engineer… more
Date: October 21, 2003
Creator: Mariner, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Petrology and Geochemistry of Neoproterozoic Arc Plutons Beneath the Atlantic Coastal Plain, SRS, SC

Description: In this report is presented first a brief review of the regional geologic setting of the Savannah River Site, descriptions of the plutonic rock units sampled here, whole rock geochemical data on the plutonic igneous rocks, and finally, a discussion of how the crystalline basement rocks of the Savannah River Site formed and how they may correlate with other terranes exposed in the Piedmont of the Carolinas, Georgia, and Virginia.
Date: October 21, 1998
Creator: Maryak, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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