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Chemical trends in the Ice Springs basalt, Black Rock Desert, Utah

Description: The Holocene Ice Springs volcanic field of west-central Utah consists of 0.53 km/sup 3/ of tholeiitic basalts erupted as a sequence of nested cinder cones and associated lava flows. Whole rock x-ray fluorescence and atomic absorption analysis of ninety-six samples of known relative age document statistically significant inter- and intra-eruption chemical variations. Elemental trends include increases in Ti, Fe, Ca, P, and Sr and decreases in Si, K, Rb, Ni, Cr, and Zr with decreasing age. Microp… more
Date: June 1980
Creator: Lynch, W. C. & Nash, W. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparative assessment of five potential sites for hydrothermal-magma systems: energy transport

Description: A comparative assessment of five sites is being prepared as part of a Continental Scientific Drilling Program (CSDP) review of thermal regimes for the purpose of scoping areas for future research and drilling activities. This background report: discusses the various energy transport processes likely to be encountered in a hydrothermal-magma system, reviews related literature, discusses research and field data needs, and reviews the sites from an energy transport viewpoint. At least three major … more
Date: September 1, 1980
Creator: Hardee, H.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Petrology, geochronology, and chemical evolution of the Twin Peaks Rhyolite Domes, Utah

Description: Two distinct sequences of silicic volcanism at the Twin Peaks volcanic field, Millard County, Utah, spanned periods from 2.74 +- .10 to 2.54 +- .09 m.y. and 2.43 +- .08 to 2.35 +- .08 m.y., and produced a total exposed volume of 4 km/sup 3/ of rhyolites and volcanoclastics. Wet chemical, x-ray fluorescence, microprobe, atomic absorption, and neutron activation methods have been employed to obtain a wide range of chemical data on whole rock and mineral separate samples. Calculated distribution c… more
Date: May 1, 1980
Creator: Crecraft, H. R.; Nash, W. P. & Evans, S. H., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparative assessment of five potential sites for hydrothermal magma systems: geochemistry

Description: A brief discussion is given of the geochemical objectives and questions that must be addressed in such an evaluation. A summary of the currently published literature that is pertinent in answering these questions is presented for each of the five areas: The Geysers-Clear Lake region, Long Valley, Rio Grand Rift, Roosevelt Hot Springs, and the Salton Trough. The major geochemical processes associated with proposed hydrothermal sites are categorized into three groups for presentation: geochemistr… more
Date: August 1, 1980
Creator: White, A.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of high temperature viscosity measurement technique

Description: Viscosity measurements with magmatic rock at high temperatures and occasionally at elevated pressures are nontrivial problems. The conception, development, and testing of: (1) an electromagnetic viscometer and (2) an x-ray technique are reported. Both methods employ a falling metallic sphere in the melt and provide real-time data. Initial testing of the electromagnetic viscometer was performed at one bar and from 700 to 1300/sup 0/C. Follow-on experiments with this viscometer were carried out a… more
Date: April 1, 1980
Creator: R.P., Wemple.; Hammetter, W.F. & Greenholt, C.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Long tube heat exchanger: the facility and some preliminary tests on the down center/up annular flow configuration

Description: A test facility was designed and constructed to study forced flow boiling heat transfer in a closed loop long tube heat exchanger which is a two concentric-tube vertical design. The system consists of a 12 m long heat exchanger which can be operated at pressures to 689.3 kPa with pumped or natural convection flow rates from 0.0631 to 0.631 liters/second and which can be irradiated with a maximum steady heat flux rate of 50 kW/m/sup 2/ by a set of resistive heaters operable at temperatures up to… more
Date: March 1, 1980
Creator: Lee, D. O.; Johnson, R. W. & Weatherbee, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative assessment of five potential sites for magma: hydrothermal systems - geophysics

Description: As part of a comparative assessment for the Continental Scientific Drilling Program, geophysical data were used, to characterize and evaluate potential magma-hydrothermal targets at five drill sites in the western United States. The sites include Roosevelt Hot Springs, Utah, the Rio Grande Rift, New Mexico, and The Geysers-Clear Lake, Long Valley, and Salton Trough areas, California. This summary discusses the size, depth, temperature, and setting of each potential target, as well as relvant sc… more
Date: September 2, 1980
Creator: Kasameyer, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magma energy research project: state-of-the-project report, October 1, 1978

Description: The feasibility of extracting energy from magma bodies is investigated. The work done in FY 76, 77, and 78 in the following tasks are summarized; resource location and definition, source tapping, magma characterization and materials compatibility, and energy extraction. (MHR)
Date: February 1, 1980
Creator: Colp, J. L. & Traeger, R. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magma energy: a feasible alternative

Description: A short review of the work performed by Sandia Laboratories in connection with its Magma Energy Research Project is provided. Results to date suggest that boreholes will remain stable down to magma depths and engineering materials can survive the downhole environments. Energy extraction rates are encouraging. Geophysical sensing systems and interpretation methods require improvement, however, to clearly define a buried magma source.
Date: March 1, 1980
Creator: Colp, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative assessment of five potential sites for hydrothermal-magma systems: summary

Description: A comparative assessment of five potential hydrothermal-magma sites for this facet of the Thermal Regimes part of the CSDP has been prepared for the DOE Office of Basic Energy Sciences. The five sites are: The Geysers-Clear Lake, CA, Long Valley, CA, Rio Grande Rift, NM, Roosevelt Hot Springs, UT, and Salton Trough, CA. This site assessment study has drawn together background information (geology, geochemistry, geophysics, and energy transport) on the five sites as a preliminary stage to site s… more
Date: November 1, 1980
Creator: Luth, W.C. & Hardee, H.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strength and ductility of room-dry and water-saturated igneous rocks at low pressures and temperatures to partial melting. Final report

Description: Rock types that are likely candidates for drilling were tested. Reported herein are the short-time ultimate strengths and ductilities determined at temperatures of 25/sup 0/ to 1050/sup 0/C and a strain rate of 10/sup -4/s/sup -1/ of (a) room-dry Mt. Hood Andesite, Cuerbio Basalt, and Charcoal (St. Cloud Gray) Granodiorite at confining pressures of 0, 50, and 100 MPa, (b) water-saturated specimens of the same three rocks at zero effective pressure (both pore and confining pressures of 50 MPa), … more
Date: November 1, 1980
Creator: Friedman, M.; Handin, J.; Higgs, N. G.; Lantz, J. R. & Bauer, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uranium mineralization in fluorine-enriched volcanic rocks

Description: Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that r… more
Date: September 1980
Creator: Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir

Description: Numerical modeling of the transient cooling of a magmatic intrusion is described in a geothermal reservoir that results from conduction and convection, considering the effects of overlying cap rock and differing horizontal and vertical permeabilities of the reservoir. These results are compared with data from Salton Sea Geothermal Field (SSGF). Multiple layers of convection cells are observed when horizontal permeability is much larger than vertical permeability. The sharp drop-off of surface h… more
Date: January 11, 1980
Creator: Lau, K. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Continental Scientific Drilling Program thermal regimes: comparative site assessment geology of five magma-hydrothermal systems

Description: The geology and salient aspects of geophysics and hydrogeochemistry of five high-grade geothermal systems in the USA are reviewed. On the basis of this information, a target location is suggested for a deep (5- to 8-km) borehole that will maximize the amount of scientific information to be learned at each of the five geothermal areas.
Date: October 1, 1980
Creator: Goff, F. & Waters, A.C. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary Analysis of Two Aspects of Magma-Powered Electric-Generation Plants

Description: Two aspects critical to the development of magma electric generation plants using closed heat exchanger systems are addressed. The heat transfer between the cold fluid in the downcomer and the hot fluid in the upcomer is analyzed using an NTU-effectiveness technique. The results indicate the hot fluid must be thermally insulated from the colder fluid in order to yield a useful temperature difference at the surface. A preliminary system analysis is conducted to determine the well cost requiremen… more
Date: September 1980
Creator: Hoover, E. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Search for Underground Openings for in Situ Test Facilities in Crystalline Rock

Description: With a few exceptions, crystalline rocks in this study were limited to plutonic rocks and medium to high-grade metamorphic rocks. Nearly 1700 underground mines, possibly occurring in crystalline rock, were initially identified. Application of criteria resulted in the identification of 60 potential sites. Within this number, 26 mines and 4 civil works were identified as having potential in that they fulfilled the criteria. Thirty other mines may have similar potential. Most of the mines identifi… more
Date: January 1980
Creator: Wollenberg, H. A.; Strisower, B.; Corrigan, D. J.; Graf, A. N.; O'Brien, M. T.; Pratt, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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East Mesa Magmamax Power Process Geothermal Generating Plant, A Preliminary Analysis

Description: During recent months, Magma Power Company has been involved in the shakedown and startup of their 10 MW binary cycle power plant at East Mesa in the Imperial Valley of Southern California. This pilot plant has been designed specifically as an R & D facility, with its primary goal to explore the necessary technology improvements required to make the binary cycle an efficient, cost effective and reliable conversion process. Magma Power's exploration activities, carried out in other parts of the W… more
Date: December 1, 1980
Creator: Hinrichs, T. C. & Dambly, B. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Power System Equipment Module Test Project

Description: The technology of electric power generation when applying the binary process to hydrothermal resources had not yet been demonstrated in the United States. Accordingly, on November 10, 1977, the Electric Power Research Institute and the Department of Energy, acting through the Lawrence Berkeley Laboratory, agreed to cofund the Power System Equipment Module Test Project. The Power System Equipment Module Test Project consisted of a field test program to accomplish the objectives listed below whil… more
Date: December 1, 1980
Creator: Schilling, J.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Binary Cycle Geothermal Demonstration Power Plant New Developments

Description: San Diego Gas and Electric Company (SDG and E) has been associated with geothermal exploration and development in the Imperial Valley since 1971. SDG and E currently has interests in the four geothermal reservoirs shown. Major SDG and E activities have included drilling and flow testing geothermal exploration wells, feasibility and process flow studies, small-scale field testing of power processes and equipment, and pilot plant scale test facility design, construction and operation. Supporting … more
Date: December 1, 1980
Creator: Lacy, Robert G. & Jacobson, William O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assessment of effectiveness of geologic isolation systems. Perspectives on the geological and hydrological aspects of long-term release scenario analyses

Description: Information that may be relevant to individuals involved with analyzing long-term release scenarios of specific repositories for nuclear waste is presented. The bulk of the information is derived from recent studies in West Germany and the United States. Emphasis is on the specific geological and hydrological phenomena that, alone or in concert, could potentially perturb the area around specific repository sites. Research is continuing on most of the topics discussed within this report. Because… more
Date: June 1, 1980
Creator: Stottlemyre, J. A.; Wallace, R. W.; Benson, G. L. & Zellmer, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Seismic Exploration for Shallow Magma Bodies in the Vicinity of Socorro, New Mexico. (Final Report: 1/1/77 - 12/31/77)

Description: This report contains the following articles: Characteristics of Rio Grande rift in vicinity of Socorro, New Mexico, from geophysical studies; Exploration framework of the Socorro Geothermal Area, New Mexico; a study of Poisson's ratio in the upper crust in the Socorro, New Mexico, Area; and Microearthquake frequency attenuation of S phases in the Rio Grande rift near Socorro. (ACR)
Date: November 1, 1980
Creator: Sanford, Allan R. & Schlue, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploration of volcanic geothermal energy resources based on rheological techniques. Final report

Description: Tidal strain and tilt field observations were carried out during the period February 1978 to December 1979 at the Klamath Graben and Newberry Caldera in Oregon and at Krafla in Northern Iceland. Moreover, tilt observations were made at Mt. St. Helens, Washington, during the summer of 1980. Two strainmeters of the same type as now in use by the US Geological Survey were applied in the strain work. Tilts were measured by two Kinemetrics model TM-1B biaxial tilt meters. The instruments were placed… more
Date: January 1, 1980
Creator: Bodvarsson, G.; Axelsson, G. & Johnson, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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