The Geology and Geothermal Resource of the Makushin Volcano Region of Unalaska Island, Alaska
- Key words
- Exploration; USA; Alaska; Unalaska Island
- Location
- Unalaska, Alaska; Makushin Volcano, Alaska
- Conference
- Geothermal Resources Council Transactions
- Year
- 1985
- Session
- Exploration; Geological surveys; Faults; Well testing; Flow
- Language
- English
Abstract
Geological, geophysical, geochemical and well flow test data suggest a 13+/- km3 and a slightly less than 195°C water dominated reservoir beneath the Makushin Volcano caldera that reaches a depth of about 4.4 +/- km. Through numerous fractures, this reservoir is presently discharging on the northern, eastern, and southern flanks of the volcano as reflected by numerous fumaroles. Rising gases area also escaping directly to the surface through the caldera as reflected by the largest fumarole on the summit caldera.
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