Early exploration of the Aluto geothermal field, Ethiopia (History of discovery well LA-3)

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• 作者：Manfred P. Hochstein^a ; ^{mp.hochstein@auckland.ac.nz} ; Befekadu Oluma^b ; Hagen Hole^c
• 关键词：Volcanic geothermal system ; Ethiopian Rift Valley ; Resistivity surveys and thermal alteration ; Crustal heat flow ; Extinct thermal outflows ; Shallow temperature gradient (TG) holes
• 刊名：Geothermics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：66
• 期：Complete
• 页码：73-84
• 全文大小：3834 K
• 卷排序：66

文摘

Widespread active manifestations found over Aluto and its flanks (>70 km2). Advective flows caused thermal alteration and low (palaeo-) resistivity structures. Two 1.4 km-deep flank wells (85–105 °C) found c.100 mW/m2 deep heat flux. A palaeo high-T out-flow event (c.140 kyr) was traced by epidote alteration. The 2.2 km-deep, productive (320 °C) well (LA-3) was sited using TG well data.