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Use of Petrex Fingerprint Soil Gas Geochemical Technique in Multiple Scale Geothermal Exploration A Case History at Okuaizu Geothermal Field, Japan
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Sakai S, ; Suga S, ; Bisque RE, (1987). Use of Petrex Fingerprint Soil Gas Geochemical Technique in Multiple Scale Geothermal Exploration A Case History at Okuaizu Geothermal Field, Japan.
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Sakai S, ; Suga S, ; Bisque RE, (1987). Use of Petrex Fingerprint Soil Gas Geochemical Technique in Multiple Scale Geothermal Exploration A Case History at Okuaizu Geothermal Field, Japan.
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: The Australasian Institute of Mining and Metallurgy
Pages: 6
Publication Date:
Jan 1, 1987
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Abstract
Abstract
| Soil gases were collected on activated charcoal, analyzed by computerized mass spectrometry and treated with multivariate statistical pattern recognition to determine the diagnostic geochemical signature associated with the Okuaizu Geothermal Field in Japan. From this a geothermal model was developed and compare to 175 "unknown" samples in a 250 m spaced grid over 30 1Qn2 mapping the areas with a matching geochemical character. Faults and fractures were generally located by the presence of high molecular weight components. Following the initial survey, the faults in two specific areas were precisely located by a second survey with samples at 10-30m spacing. Where earlier geochemical surveys had placed anomalies 1-2 Km northeast of the geothermal center, the fingerprint survey accurately mapped the system and detected several faulted zones. It was not misled by hot springs located away from the geothermal System. |
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