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Research on the physical properties of geothermal reservoir rocks. Progress report 2, September 1, 1976--January 10, 1977

Description: Textural properties, including porosity and density, of rock samples collected from Cenozoic volcanic fields in the western U.S. were studied. Resistivity and acoustic wave speed measurements were also made. (JGB)
Date: January 10, 1977
Creator: Keller, G. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research Drill Hole at the Summit of Kilauea Volcano, Hawaii

Description: An exploration hole has been drilled to a depth of 1262 m beneath the summit of Kilauea Volcano on the Island of Hawaii in order to obtain information about the potential for the occurrence of geothermal energy in a basalt environment. The hole was started at an elevation of 1102 m, and bottomed at an elevation of -160 m. Short intervals were cored, but the principal information obtained from the hole was in the form of physical measurements. The temperature profile through the hole was complic… more
Date: January 1, 1974
Creator: Keller, G. V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research on the physical properties of geothermal reservoir rocks. Final report

Description: Variation of P-wave velocities and electrical resistivities of several suites of water-saturated recent volcanics was investigated. Both P-velocities and resistivities exhibited strong dependence on porosity. Resistivity was also dependent upon degree of water saturation and temperature. P-wave velocities, while showing a strong dependence on porosity, appear to be independent of water saturation and temperature. Volcanics, in general, exhibit higher resistivities compared to other igneous rock… more
Date: October 1982
Creator: Keller, G.V. & Ibrahim, A.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research on the physical properties of geothermal reservoir rocks. Summary report on collection of samples of volcanic rocks for petrophysical studies. Progress report 1. [From the Snake River Plain, the Columbia Plateaus, the Cascade Range, the Modoc, south central Nevada, and Jemez volcanic fields]

Description: Rock samples were collected from the Snake River Plain volcanic depression of Idaho, the Columbia Plateau's volcanic basin located in southeastern Washington, northeastern Oregon, and western Idaho, the Modoc volcanic province of northeastern California, the volcanic fields of south central Nevada, and the Jemez volcanic field of north central New Mexico. Strategy governing sample selection is described. From each field, 64 individual rock samples, each being several kilograms in size, were col… more
Date: August 31, 1976
Creator: Grose, L. T. & Keller, G. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Colorado School of Mines Nevada Geothermal Study Progress Report No. 4, February 1--October 31, 1975

Description: This is the fourth in a series of reports that describe the progress of geological, geophysical, and geochemical exploration research for geothermal energy sources in a Basin and Range setting. The region of our investigation lies in the Gerlach-Hualapai Flat area in the southwestern part of the Black Rock Desert of northwestern Nevada (Plate I). Included herein are preliminary presentations of results of field investigations carried out mainly during the summer of 1975 by graduate students and… more
Date: December 1975
Creator: Grose, L.T. & Keller, G.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Research on the physical properties of geothermal reservoir rock. Annual report, September 1, 1977

Description: Measurements have been made of the electrical resistivity, the acoustic wave speed, density, and water content of six groups of rock samples taken from Cenozoic volcanic units. It has been found from these measurements that the correlations between physical properties are significantly different in the case of volcanic rocks than in the case of sandstones and limestones. For a given porosity and water content, the resistivity of a volcanic rock is several fold greater than that of a sandstone o… more
Date: September 25, 1977
Creator: Keller, G.V.; Grose, L.T. & Pickett, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Research on the physical properties of geothermal reservoir rock. Quarterly report, March 1978

Description: A laboratory study of the P-wave velocity and electric resistivity was undertaken on Cenozoic volcanic rocks collected from the Columbia Plateau volcanic basin (C) and the Jemez volcanic field (NM). Electric resistivities of cylindrical samples saturated with 0.1 N NaCl solution were measured using a four electrode system and a 1.0 KHz frequency source. Seismic P-wave velocities were calculated from measured transit time of mechanical pulses generated and received by piezoelectric transducers. … more
Date: March 30, 1978
Creator: Keller, G.V.; Grose, L.T. & Pickett, G.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geological and geophysical study of the origin of the warm springs in Bath County, Virginia. Final report, June 1, 1975--April 30, 1976

Description: The results of heat flow determinations and a reconnaissance dipole electrical resistivity survey in Bath County are described. A geologic map was compiled based on published maps and supported by reconnaissance geologic mapping in areas where published maps were not available. A regional bipole--dipole electrical resistivity survey was made in order to detect the presence of resistivity lows that might be associated with a geothermal system at depth. A single hole was drilled to a depth of app… more
Date: 1976~
Creator: Costain, John K.; Keller, G. V. & Crewdson, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Deep research drill hole at Kilauea Volcano, Hawaii. [1,262 m]

Description: A 1262-m-deep bore hole was drilled at the summit of Kilauea Volcano, Hawaii, to test predictions based on surface geophysical surveys and to obtain information on the hydrothermal regime above a postulated magma reservoir. Data from the drilling and geophysical borehole logs tend to confirm earlier predictions that a mound of brackish or saline water is present above the inferred magma body. Temperatures within the hydrothermal system are not sufficiently high to indicate deposits of economic … more
Date: January 1, 1976
Creator: Zablocki, C. J.; Tilling, R. I.; Peterson, D. W.; Christiansen, R. L. & Keller, G. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dielectric Constant and Electrical Resistivity of Natural-State Cores

Description: The following report covers measurements of electrical resistivity and dielectric constant that were made on parts of 27 cores from the Morrison formation in the Colorado Plateau uranium province as part of a program to obtain basic data on the physical properties of the rock in and near uranium-mineralized zones.
Date: April 1957
Creator: Keller, G. V. & Licastro, P. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geoelectric studies on the east rift, Kilauea volcano, Hawaii Island. Geothermal resources exploration in Hawaii: Number 3

Description: Three geophysical research organizations, working together under the auspices of the Hawaii Geothermal Project, have used several electrical and electromagnetic exploration techniques on Kilauea volcano, Hawaii to assess its geothermal resources. This volume contains four papers detailing their methods and conclusions. Separate abstracts were prepared for each paper. (MHR)
Date: December 1, 1977
Creator: Keller, G. V.; Skokan, C. K.; Skokan, J. J.; Daniels, J.; Kauahikaua, J. P.; Klein, D. P. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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