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• 1. [Image] Geothermal exploration assessment and interpretation, Upper Klamath Lake Area, Klamath Basin, Oregon

  	Data from public and private sources on the Klamath Basin geothermal resource are reviewed, synthesized, and reinterpreted. In this, the second and final phase of the work, geological, remote sensing, ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal exploration assessment and interpretation, Upper Klamath Lake Area, Klamath Basin, Oregon Author: Stark, M. Year: 1980 Data from public and private sources on the Klamath Basin geothermal resource are reviewed, synthesized, and reinterpreted. In this, the second and final phase of the work, geological, remote sensing, geochemical, temperature gradient, gravity, aeromagnetic, and electrical resistivity data sets are examined. These data were derived from surveys concentrated on the east and west shores of Upper Klamath Lake. The geological, remote sensing, and potential field data suggest a few northeast-trending discontinuities, which cross the regional north-westerly strike. The near-surface distribution of warm water appears to be related to the intersections of these lineaments and northwest-trending faults. The groundwater geochemical data are reviewed and the various reservoir temperature estimates compared. Particular attention is given to specific electrical conductivities of waters as an interpretational aid to the subsurface resistivity results. A clear trend emerges in the Klamath Falls/Olene Gap area; hotter waters are associated with higher specific conductivities. In the Nuss Lake/Stukel Mountain area the opposite trend prevails, although the relationship is somewhat equivocal; LBL-10140 Title: Geothermal exploration assessment and interpretation, Upper Klamath Lake Area, Klamath Basin, Oregon Author: Stark, M. Year: 1980 Data from public and private sources on the Klamath Basin geothermal resource are reviewed, synthesized, and reinterpreted. In this, the second and final phase of the work, geological, remote sensing, geochemical, temperature gradient, gravity, aeromagnetic, and electrical resistivity data sets are examined. These data were derived from surveys concentrated on the east and west shores of Upper Klamath Lake. The geological, remote sensing, and potential field data suggest a few northeast-trending discontinuities, which cross the regional north-westerly strike. The near-surface distribution of warm water appears to be related to the intersections of these lineaments and northwest-trending faults. The groundwater geochemical data are reviewed and the various reservoir temperature estimates compared. Particular attention is given to specific electrical conductivities of waters as an interpretational aid to the subsurface resistivity results. A clear trend emerges in the Klamath Falls/Olene Gap area; hotter waters are associated with higher specific conductivities. In the Nuss Lake/Stukel Mountain area the opposite trend prevails, although the relationship is somewhat equivocal; LBL-10140 Close

• 2. [Image] Energy Scenarios for New Zealand

  	The objective of the Energy Research Group, led by Dr Garth Harris, Executive Officer of the NZERDC, was to explore a range of energy choices open to New Zealand and to identify policies that match the ...
  	Citation × Citation Citation Abstract Copy Title: Energy Scenarios for New Zealand Author: Maiden, C. J. Year: 1976 The objective of the Energy Research Group, led by Dr Garth Harris, Executive Officer of the NZERDC, was to explore a range of energy choices open to New Zealand and to identify policies that match the choices. The range of choices is broad, both because the national resource base is diverse and because there is plenty of room for improving the efficiency with which we use energy. The trend of recent years has been towards rapid growth in energy use, i.e. a doubling every 15-20 years. But trend is not destiny and the current research shows clearly that our nation's energy future is not compelled to follow a single narrow path Title: Energy Scenarios for New Zealand Author: Maiden, C. J. Year: 1976 The objective of the Energy Research Group, led by Dr Garth Harris, Executive Officer of the NZERDC, was to explore a range of energy choices open to New Zealand and to identify policies that match the choices. The range of choices is broad, both because the national resource base is diverse and because there is plenty of room for improving the efficiency with which we use energy. The trend of recent years has been towards rapid growth in energy use, i.e. a doubling every 15-20 years. But trend is not destiny and the current research shows clearly that our nation's energy future is not compelled to follow a single narrow path Close

• 3. [Image] Geophysical Lineaments of Arizona

  	Photolineaments seen on satellite images are usually expressions of deep crustal ruptures. However, photolineaments are omnipresent and an independent expression of regional discontinuities is needed to ...
  	Citation × Citation Citation Abstract Copy Title: Geophysical Lineaments of Arizona Author: Lepley, L.K. Year: 1979 Photolineaments seen on satellite images are usually expressions of deep crustal ruptures. However, photolineaments are omnipresent and an independent expression of regional discontinuities is needed to help rank the photolineaments. Published gravity and magnetic contour maps of Arizona were analyzed to produce a single geophysical lineament map to indicate trends of regional basement structures. This map shows that the southwestern quarter of Arizona is dominated by a NNW-ENE orthogonal system whereas the remainder of the state is gridded by a NW-NE system. North-south systems are present throughout the state, as are EW lineaments. Arizona is transected by the WNW Texas Strand, but other shorter systems trending in the Texas direction are found throughout the state south of the Strand. The major lineament systems as seen on Landsat, gravity, and magnetic maps correlate reasonably Well with known geothermal manifestations. Many other systems are Precambrian, Paleozoic, and/or Mesozoic in age but appear to control the location of Quaternary Volcanic systems Title: Geophysical Lineaments of Arizona Author: Lepley, L.K. Year: 1979 Photolineaments seen on satellite images are usually expressions of deep crustal ruptures. However, photolineaments are omnipresent and an independent expression of regional discontinuities is needed to help rank the photolineaments. Published gravity and magnetic contour maps of Arizona were analyzed to produce a single geophysical lineament map to indicate trends of regional basement structures. This map shows that the southwestern quarter of Arizona is dominated by a NNW-ENE orthogonal system whereas the remainder of the state is gridded by a NW-NE system. North-south systems are present throughout the state, as are EW lineaments. Arizona is transected by the WNW Texas Strand, but other shorter systems trending in the Texas direction are found throughout the state south of the Strand. The major lineament systems as seen on Landsat, gravity, and magnetic maps correlate reasonably Well with known geothermal manifestations. Many other systems are Precambrian, Paleozoic, and/or Mesozoic in age but appear to control the location of Quaternary Volcanic systems Close

• 4. [Image] Gravity and Ground Magnetic Surveys of the Central Mineral Mountains, Utah. Volume 6: Final Report

  	During the summers of 1974 and 1975, gravity and ground magnetic surveys were made over the central part of the Mineral Mountains and vicinity, Utah. The gravity survey comprised 627 gravity stations over ...
  	Citation × Citation Citation Abstract Copy Title: Gravity and Ground Magnetic Surveys of the Central Mineral Mountains, Utah. Volume 6: Final Report Author: Crebs, T.J. Year: 1976 During the summers of 1974 and 1975, gravity and ground magnetic surveys were made over the central part of the Mineral Mountains and vicinity, Utah. The gravity survey comprised 627 gravity stations over an area of approximately 660 sq km, and included 8 gravity profiles over the Roosevelt Hot Springs KGRA. The magnetic survey comprised over 400 magnetic stations within 4 magnetic profiles. The gravity data were compiled as a terrain-corrected Bouguer gravity anomaly map with a contour interval of 2 mgal. The gravity features include: (1) generally northward-trending gravity contours with gradients along the margins of the Mineral Range, indicating that the range is a horst bounded on the east and west by the Beaver and Milford valley grabens, respectively, where the Milford Valley graben shows pronounced gravity low, which indicates a valley-fill thickness of about 1.8km; and (2) a northward-trending gravity high extends along the western flank of the Mineral Range (probably caused by high-density metamorphic rocks) Title: Gravity and Ground Magnetic Surveys of the Central Mineral Mountains, Utah. Volume 6: Final Report Author: Crebs, T.J. Year: 1976 During the summers of 1974 and 1975, gravity and ground magnetic surveys were made over the central part of the Mineral Mountains and vicinity, Utah. The gravity survey comprised 627 gravity stations over an area of approximately 660 sq km, and included 8 gravity profiles over the Roosevelt Hot Springs KGRA. The magnetic survey comprised over 400 magnetic stations within 4 magnetic profiles. The gravity data were compiled as a terrain-corrected Bouguer gravity anomaly map with a contour interval of 2 mgal. The gravity features include: (1) generally northward-trending gravity contours with gradients along the margins of the Mineral Range, indicating that the range is a horst bounded on the east and west by the Beaver and Milford valley grabens, respectively, where the Milford Valley graben shows pronounced gravity low, which indicates a valley-fill thickness of about 1.8km; and (2) a northward-trending gravity high extends along the western flank of the Mineral Range (probably caused by high-density metamorphic rocks) Close

• 5. [Image] South Carolina Geothermal Program Final Report; Tectogenesis of the Rocks Surrounding the Winnsboro Intrusive Complex and Reconnaissance and Petrography of the Pageland Pluton

  	Major post-tectonic plutons of the easternmost Piedmont in the southern Appalachians have been of primary interest because of their high radiogenic heat production. Such heat production comes from a linear ...
  	Citation × Citation Citation Abstract Copy Title: South Carolina Geothermal Program Final Report; Tectogenesis of the Rocks Surrounding the Winnsboro Intrusive Complex and Reconnaissance and Petrography of the Pageland Pluton Author: Bourland, W.C. Year: 1978 Major post-tectonic plutons of the easternmost Piedmont in the southern Appalachians have been of primary interest because of their high radiogenic heat production. Such heat production comes from a linear map trend including the Winnsboro, Liberty Hill, Pageland, and Lilesville plutons which parallel the proposed eastern Piedmont Fault system of Hatcher and others (1977). This study, in examining regional versus contact metamorphism and crosscutting relationships between the Winnsboro and Pageland complexes and the major folds and mylonitic zones of this area, provides a relative time framework for the tectonic and plutonic events Title: South Carolina Geothermal Program Final Report; Tectogenesis of the Rocks Surrounding the Winnsboro Intrusive Complex and Reconnaissance and Petrography of the Pageland Pluton Author: Bourland, W.C. Year: 1978 Major post-tectonic plutons of the easternmost Piedmont in the southern Appalachians have been of primary interest because of their high radiogenic heat production. Such heat production comes from a linear map trend including the Winnsboro, Liberty Hill, Pageland, and Lilesville plutons which parallel the proposed eastern Piedmont Fault system of Hatcher and others (1977). This study, in examining regional versus contact metamorphism and crosscutting relationships between the Winnsboro and Pageland complexes and the major folds and mylonitic zones of this area, provides a relative time framework for the tectonic and plutonic events Close

• 6. [Image] Wet Geothermal Potential of the Kingman-Williams Region, Arizona

  	The Kingman-Williams region, Arizona, possesses few thermal waters of deep origin. Evaluation of 33 waters (8 thermal) reveals that thermal waters are restricted to the Basin and Range tectonic province; ...
  	Citation × Citation Citation Abstract Copy Title: Wet Geothermal Potential of the Kingman-Williams Region, Arizona Author: Goff, F.E. Year: 1979 The Kingman-Williams region, Arizona, possesses few thermal waters of deep origin. Evaluation of 33 waters (8 thermal) reveals that thermal waters are restricted to the Basin and Range tectonic province; no thermal waters were found on the west margin of the Colorado Plateau. The thermal waters appear to rise along north-trending normal faults or flow in deep aquifers in Quaternary sedimentary basins of the Basin and Range province. All thermal waters have distinctive chemistry and discharge at temperatures ranjinj from 28-46°C. They Apparently issue from small isolated jeothermal reservoirs. Geothermometry and chemistry indicate that these are low-temperature reservoirs that probably do not exceed 115°C Title: Wet Geothermal Potential of the Kingman-Williams Region, Arizona Author: Goff, F.E. Year: 1979 The Kingman-Williams region, Arizona, possesses few thermal waters of deep origin. Evaluation of 33 waters (8 thermal) reveals that thermal waters are restricted to the Basin and Range tectonic province; no thermal waters were found on the west margin of the Colorado Plateau. The thermal waters appear to rise along north-trending normal faults or flow in deep aquifers in Quaternary sedimentary basins of the Basin and Range province. All thermal waters have distinctive chemistry and discharge at temperatures ranjinj from 28-46°C. They Apparently issue from small isolated jeothermal reservoirs. Geothermometry and chemistry indicate that these are low-temperature reservoirs that probably do not exceed 115°C Close

• 7. [Image] A Time Domain Survey of the Los Alamos Region, New Mexico

  	A time domain electromagnetic sounding survey of the region surrounding the city of Los Alamos, New Mexico was carried out. The results show that a linear trough, trending northeast--southwest runs beneath ...
  	Citation × Citation Citation Abstract Copy Title: A Time Domain Survey of the Los Alamos Region, New Mexico Author: Williston, McNeiI and Associates Year: 1979 A time domain electromagnetic sounding survey of the region surrounding the city of Los Alamos, New Mexico was carried out. The results show that a linear trough, trending northeast--southwest runs beneath the city. The southern boundary is somewhat to the south of the city, the northern boundary was not established. The geoelectric section consists of three layers and the total thickness of the section is in excess of 3 000 m. The resistivities of the second layer are as low as 2.5 ..cap omega.. m. If the salinities are in the region of 7 000 ppm, the resistivities could indicate that water with a temperature of 150/sup 0/C may be found at a depth of 3 000 m. Title: A Time Domain Survey of the Los Alamos Region, New Mexico Author: Williston, McNeiI and Associates Year: 1979 A time domain electromagnetic sounding survey of the region surrounding the city of Los Alamos, New Mexico was carried out. The results show that a linear trough, trending northeast--southwest runs beneath the city. The southern boundary is somewhat to the south of the city, the northern boundary was not established. The geoelectric section consists of three layers and the total thickness of the section is in excess of 3 000 m. The resistivities of the second layer are as low as 2.5 ..cap omega.. m. If the salinities are in the region of 7 000 ppm, the resistivities could indicate that water with a temperature of 150/sup 0/C may be found at a depth of 3 000 m. Close

• 8. [Image] Geothermal Progress Monitor. Progress Report No. 4, September 1980

  	The following are included: geothermal power plants proposed and on-line; direct heat applications proposed and operational; trends in drilling activities; exploration; leases; outreach and technical assistance; ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor. Progress Report No. 4, September 1980 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1980 The following are included: geothermal power plants proposed and on-line; direct heat applications proposed and operational; trends in drilling activities; exploration; leases; outreach and technical assistance; feasibility studies and application demonstrations; geothermal loan guaranty program; research and development activities; legal, institutional, and regulatory activities; environmental activities; reports and publications; and a directory (MHR) Title: Geothermal Progress Monitor. Progress Report No. 4, September 1980 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1980 The following are included: geothermal power plants proposed and on-line; direct heat applications proposed and operational; trends in drilling activities; exploration; leases; outreach and technical assistance; feasibility studies and application demonstrations; geothermal loan guaranty program; research and development activities; legal, institutional, and regulatory activities; environmental activities; reports and publications; and a directory (MHR) Close

• 9. [Image] Evaluation of Lineament Analysis as an Exploration Technique for Geothermal Energy, Western and Central Nevada. Final Report, June 1976--October 1978

  	Lineament analysis as an exploration technique for geothermal energy using multi-scale, multi-format imagery and geophysical data is investigated and evaluated. Two areas in Nevada, each having distinct ...
  	Citation × Citation Citation Abstract Copy Title: Evaluation of Lineament Analysis as an Exploration Technique for Geothermal Energy, Western and Central Nevada. Final Report, June 1976--October 1978 Author: Trexler, D.T. Year: 1978 Lineament analysis as an exploration technique for geothermal energy using multi-scale, multi-format imagery and geophysical data is investigated and evaluated. Two areas in Nevada, each having distinct differences in structural style were studied. One area, which encompasses a portion of the Battle Mountain Heat Flow High, was studied to determine the relationship between regional and local structural controls and geothermal activity. Four geothermal sites within this area (Winnemucca AMS) were selected and studied in detail. These sites include: 1) Leach Hot Springs, 2) Kyle Hot Springs, 3) Beowawe geothermal area and Buffalo Valley Hot Springs. A second area encompassed by the Reno AMS Sheet was selected for further study in a region dominated by three diverse tectonic styles; these are: 1) the Sierra Nevada Front, 2) the Walker Lane, and 3) basin-and-range structures. Geothermal sites analyzed at site specific scales within the Reno AMS Sheet included Steamboat Hot Springs in the Sierra Nevada Front subprovince, Dixie Valley Hot Springs located in typical basin-and-range terrain and the Brady's-Desert Peak area which is marginal to the Walker Lane. Data products employed included LANDSAT imagery, SKYLAB photography, gravity, and aeromagnetic maps. Results of this investigation indicate that in north-central Nevada the major sites of geothermal activity are associated with northeast trending structures related to the Midas Trench lineament and that the most viable geothermal area (Beowawe is located at the intersection of the northeast trend of the Oregon-Nevada Lineament Title: Evaluation of Lineament Analysis as an Exploration Technique for Geothermal Energy, Western and Central Nevada. Final Report, June 1976--October 1978 Author: Trexler, D.T. Year: 1978 Lineament analysis as an exploration technique for geothermal energy using multi-scale, multi-format imagery and geophysical data is investigated and evaluated. Two areas in Nevada, each having distinct differences in structural style were studied. One area, which encompasses a portion of the Battle Mountain Heat Flow High, was studied to determine the relationship between regional and local structural controls and geothermal activity. Four geothermal sites within this area (Winnemucca AMS) were selected and studied in detail. These sites include: 1) Leach Hot Springs, 2) Kyle Hot Springs, 3) Beowawe geothermal area and Buffalo Valley Hot Springs. A second area encompassed by the Reno AMS Sheet was selected for further study in a region dominated by three diverse tectonic styles; these are: 1) the Sierra Nevada Front, 2) the Walker Lane, and 3) basin-and-range structures. Geothermal sites analyzed at site specific scales within the Reno AMS Sheet included Steamboat Hot Springs in the Sierra Nevada Front subprovince, Dixie Valley Hot Springs located in typical basin-and-range terrain and the Brady's-Desert Peak area which is marginal to the Walker Lane. Data products employed included LANDSAT imagery, SKYLAB photography, gravity, and aeromagnetic maps. Results of this investigation indicate that in north-central Nevada the major sites of geothermal activity are associated with northeast trending structures related to the Midas Trench lineament and that the most viable geothermal area (Beowawe is located at the intersection of the northeast trend of the Oregon-Nevada Lineament Close

• 10. [Image] Geothermal Progress Monitor, Report No. 13, February 1992

  	Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor, Report No. 13, February 1992 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Division Year: 1992 Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically prepared to meet those challenges into the next century. It is the function of GPM to identify trends in the use of this resource and to provide a historical record of its development pathway. The information assembled for this issue of GPM indicates that trends in the use of geothermal energy in this country and abroad continue to be very positive. Favorable sentiments as well as pertinent actions on the part of both government and industry are documented in almost every section. The FEDERAL BEAT points up that the National Energy Strategy (NES) developed at the highest levels of the US government recognizes the environmental and energy security advantages of renewable energy, including geothermal, and makes a commitment to substantial diversification'' of US sources of energy. With the announcement of the construction of several new plants and plant expansions, the INDUSTRY SCENE illustrates industry's continued expectation that the use of geothermal energy will prove profitable to investors. In DEVELOPMENT STATUS, spokesmen for both an investor-owned utility and a major geothermal developer express strong support for geothermal power, particularly emphasizing its environmental advantages. DEVELOPMENT STATUS also reports that early successes have been achieved by joint DOE/industry R D at The Geysers which will have important impacts on the future management of this mature field. Also there is increasing interest in hot dry rock. Analyses conducted in support of the NES indicate that if all the postulated technology developments occur in this field, the price of energy derived from hot dry rock in the US could drop Title: Geothermal Progress Monitor, Report No. 13, February 1992 Author: Assistant Secretary for Conservation and Renewable Energy, Geothermal Division Year: 1992 Geothermal Progress Monitor (GPM) Issue No. 13 documents that most related factors favor the growth and geographic expansion of the US geothermal industry and that the industry is being technologically prepared to meet those challenges into the next century. It is the function of GPM to identify trends in the use of this resource and to provide a historical record of its development pathway. The information assembled for this issue of GPM indicates that trends in the use of geothermal energy in this country and abroad continue to be very positive. Favorable sentiments as well as pertinent actions on the part of both government and industry are documented in almost every section. The FEDERAL BEAT points up that the National Energy Strategy (NES) developed at the highest levels of the US government recognizes the environmental and energy security advantages of renewable energy, including geothermal, and makes a commitment to substantial diversification'' of US sources of energy. With the announcement of the construction of several new plants and plant expansions, the INDUSTRY SCENE illustrates industry's continued expectation that the use of geothermal energy will prove profitable to investors. In DEVELOPMENT STATUS, spokesmen for both an investor-owned utility and a major geothermal developer express strong support for geothermal power, particularly emphasizing its environmental advantages. DEVELOPMENT STATUS also reports that early successes have been achieved by joint DOE/industry R D at The Geysers which will have important impacts on the future management of this mature field. Also there is increasing interest in hot dry rock. Analyses conducted in support of the NES indicate that if all the postulated technology developments occur in this field, the price of energy derived from hot dry rock in the US could drop Close