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Investigation of geothermal potential in the Waianae caldera area, Western Oahu, Hawaii
|1979 - Investigation of Geo Potential in Waianae Caldera.pdf||27.68 MB||Adobe PDF||View/Open|
|Title:||Investigation of geothermal potential in the Waianae caldera area, Western Oahu, Hawaii|
|Authors:||Cox, Malcolm E.|
Sinton, John M.
Thomas, Donald M.
Mattice, Mark D.
Kauahikaua, James P.
show 2 moreHelstern, Donald M.
|Keywords:||geothermal resource assessments|
show 7 moregeophysics
Assessment of geothermal resources in Hawaii
|LC Subject Headings:||Geothermal resources--Hawaii|
|Date Issued:||Sep 1979|
|Publisher:||U.S. Geological Survey|
|Citation:||Cox ME, Sinton JM, Thomas DM, Mattice MD, Kauahikaua JP, Helstern DM, Fan PF. 1979. Investigation of geothermal potential in the Waianae caldera area, Western Oahu, Hawaii. Honolulu (HI): Hawaii Institute of Geophysics, University of Hawaii at Manoa.|
|Series:||Assessment of geothermal resources in Hawaii ; no. 2|
HIG (Series) ; 79-8
|Abstract:||"Studies of Lualualei Valley, Oahu have been conducted to determine whether a thermal anomaly exists in the area and, if so, to identify sites at which subsurface techniques should be utilized to characterize the resource.|
Geologic mapping identifies several caldera and rift zone structures in the Valley and provides a tentative outline of their boundaries. Clay mineralogy studies indicate that minor geothermal alteration of near-surface rocks has occurred at some period in the history of the area. Schlumberger resistivity soundings indicate the presence of a low resistivity layer beneath the valley floor, which has been tentatively attributed to warm water-saturated basalt. Soil and groundwater chemistry studies outline several geochemical anomalies around the perimeter and within the inferred caldera boundaries. The observed anomalies strongly suggest a subsurface heat source. Recommendations for further exploratory work to confirm the presence of a geothermal reservoir include more intensive ·surveys in a few selected areas of the valley as well as the drilling of at least three shallow (1000-m) holes for subsurface geochemical, geological and geophysical studies."
"Prepared for Western States Cooperative Direct Heat Resource Assessment."
Contents: Geology of Oahu and Waianae Volcano / Malcolm E. Cox and Donald M. Thomas -- Detailed geological mapping / John M. Sinton -- Mineral assemblages of basalt and soil samples / Donald M. Helstern and Pow-foong Fan -- Summary of regional geophysics / Malcolm E. Cox -- Geoelectric surveys / Mark D. Mattice and James P. Kauahikaua -- Geochemical surveys / Malcolm E. Cox and Donald M. Thomas
Bibliography: pages 73-76.
|Appears in Collections:||
The Geothermal Collection|
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