Geothermal energy resource investigations at Mt. Spurr, Alaska
Spurr volcano is a composite Quaternary cone of largely andesitic composition located on the west side of Cook Inlet about 80 miles west of Anchorage and about 40 miles from the Beluga electrical transmission line. Geologic mapping (Plate 1-1) shows that the present summit depression was produced by...
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ftosti:oai:osti.gov:7057121 2023-07-30T04:02:39+02:00 Geothermal energy resource investigations at Mt. Spurr, Alaska Turner, D.L. Wescott, E.M. 2007-05-14 application/pdf http://www.osti.gov/servlets/purl/7057121 https://www.osti.gov/biblio/7057121 https://doi.org/10.2172/7057121 unknown http://www.osti.gov/servlets/purl/7057121 https://www.osti.gov/biblio/7057121 https://doi.org/10.2172/7057121 doi:10.2172/7057121 15 GEOTHERMAL ENERGY ALASKA GEOTHERMAL RESOURCES VOLCANOES RESOURCE ASSESSMENT ELECTRICAL SURVEYS GEOCHEMICAL SURVEYS ERUPTION GEOLOGIC HISTORY HELIUM ICE MERCURY ELEMENTS FEDERAL REGION X FLUIDS GASES GEOPHYSICAL SURVEYS METALS NONMETALS NORTH AMERICA RARE GASES RESOURCES SURVEYS USA 2007 ftosti https://doi.org/10.2172/7057121 2023-07-11T10:53:46Z Spurr volcano is a composite Quaternary cone of largely andesitic composition located on the west side of Cook Inlet about 80 miles west of Anchorage and about 40 miles from the Beluga electrical transmission line. Geologic mapping (Plate 1-1) shows that the present summit depression was produced by a Mt. St. Helens-type sector collapse, rather than by a caldera collapse. Geochronologic and previous tephrachronologic studies show that there has been an active magmatic system at Spurr volcano during the late Pleistocene-to-Holocene time interval that is of critical interest for geothermal energy resource assessment. Major effort was devoted to geochemical and geophysical surveys of the accessible area south of Mt. Spurr, in addition to geologic mapping and geochronologic studies. Many coincident mercury and helium anomalies were found, suggesting the presence of geothermal systems at depth. Extremely large electrical self-potential anomalies were also found, together with extensive zones of low resistivity discovered by our controlled-source audiomagnetotelluric survey. The juxtaposition of all of these different types of anomalies at certain areas on the south slope of Crater Peak indicates the presence of a geothermal system which should be accessible by drilling to about 2000 ft depth. It is also evident that there is a strong volcanic hazard to be evaluated in considering any development on the south side of Mt. Spurr. This hazardous situation may require angle drilling of production wells from safer areas and placement of power generation facilities at a considerable distance from hazardous areas. Other/Unknown Material Beluga Beluga* Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Anchorage |
institution |
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collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
15 GEOTHERMAL ENERGY ALASKA GEOTHERMAL RESOURCES VOLCANOES RESOURCE ASSESSMENT ELECTRICAL SURVEYS GEOCHEMICAL SURVEYS ERUPTION GEOLOGIC HISTORY HELIUM ICE MERCURY ELEMENTS FEDERAL REGION X FLUIDS GASES GEOPHYSICAL SURVEYS METALS NONMETALS NORTH AMERICA RARE GASES RESOURCES SURVEYS USA |
spellingShingle |
15 GEOTHERMAL ENERGY ALASKA GEOTHERMAL RESOURCES VOLCANOES RESOURCE ASSESSMENT ELECTRICAL SURVEYS GEOCHEMICAL SURVEYS ERUPTION GEOLOGIC HISTORY HELIUM ICE MERCURY ELEMENTS FEDERAL REGION X FLUIDS GASES GEOPHYSICAL SURVEYS METALS NONMETALS NORTH AMERICA RARE GASES RESOURCES SURVEYS USA Turner, D.L. Wescott, E.M. Geothermal energy resource investigations at Mt. Spurr, Alaska |
topic_facet |
15 GEOTHERMAL ENERGY ALASKA GEOTHERMAL RESOURCES VOLCANOES RESOURCE ASSESSMENT ELECTRICAL SURVEYS GEOCHEMICAL SURVEYS ERUPTION GEOLOGIC HISTORY HELIUM ICE MERCURY ELEMENTS FEDERAL REGION X FLUIDS GASES GEOPHYSICAL SURVEYS METALS NONMETALS NORTH AMERICA RARE GASES RESOURCES SURVEYS USA |
description |
Spurr volcano is a composite Quaternary cone of largely andesitic composition located on the west side of Cook Inlet about 80 miles west of Anchorage and about 40 miles from the Beluga electrical transmission line. Geologic mapping (Plate 1-1) shows that the present summit depression was produced by a Mt. St. Helens-type sector collapse, rather than by a caldera collapse. Geochronologic and previous tephrachronologic studies show that there has been an active magmatic system at Spurr volcano during the late Pleistocene-to-Holocene time interval that is of critical interest for geothermal energy resource assessment. Major effort was devoted to geochemical and geophysical surveys of the accessible area south of Mt. Spurr, in addition to geologic mapping and geochronologic studies. Many coincident mercury and helium anomalies were found, suggesting the presence of geothermal systems at depth. Extremely large electrical self-potential anomalies were also found, together with extensive zones of low resistivity discovered by our controlled-source audiomagnetotelluric survey. The juxtaposition of all of these different types of anomalies at certain areas on the south slope of Crater Peak indicates the presence of a geothermal system which should be accessible by drilling to about 2000 ft depth. It is also evident that there is a strong volcanic hazard to be evaluated in considering any development on the south side of Mt. Spurr. This hazardous situation may require angle drilling of production wells from safer areas and placement of power generation facilities at a considerable distance from hazardous areas. |
author |
Turner, D.L. Wescott, E.M. |
author_facet |
Turner, D.L. Wescott, E.M. |
author_sort |
Turner, D.L. |
title |
Geothermal energy resource investigations at Mt. Spurr, Alaska |
title_short |
Geothermal energy resource investigations at Mt. Spurr, Alaska |
title_full |
Geothermal energy resource investigations at Mt. Spurr, Alaska |
title_fullStr |
Geothermal energy resource investigations at Mt. Spurr, Alaska |
title_full_unstemmed |
Geothermal energy resource investigations at Mt. Spurr, Alaska |
title_sort |
geothermal energy resource investigations at mt. spurr, alaska |
publishDate |
2007 |
url |
http://www.osti.gov/servlets/purl/7057121 https://www.osti.gov/biblio/7057121 https://doi.org/10.2172/7057121 |
geographic |
Anchorage |
geographic_facet |
Anchorage |
genre |
Beluga Beluga* Alaska |
genre_facet |
Beluga Beluga* Alaska |
op_relation |
http://www.osti.gov/servlets/purl/7057121 https://www.osti.gov/biblio/7057121 https://doi.org/10.2172/7057121 doi:10.2172/7057121 |
op_doi |
https://doi.org/10.2172/7057121 |
_version_ |
1772813466663387136 |