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Sousaki ((ギリシア語:Σουσάκι)) is an extinct volcano and modern solfatara field in northeastern Corinthia, Greece, at the northwest end of the Aegean volcanic arc. The volcano was active 4.0 to 2.3 million years ago, during the Pliocene and early Quaternary periods of the Earth's geological history. There is still significant solfataric activity at this location. The volcano erupted dacite lava.〔D’Alessandro, W. (2006) (''Gas hazard: an often neglected natural risk in volcanic areas'' ), a chapter in ''Geo-Environment & Landscape Evolution II'' edited by Martin-Duque J.F., Brebbia C.A., Emmanouloudis D.E and Mander U., Southampton, WIT Press, pages 369-378.〕 The geothermal system releases about 1 megagram per day of gases at 42 °C, 90% CO2 and < 1% each of CH4 and H2S. The earthquakes of 1997 of 3-4 R had as a result the uprising magma in higher areas of the earth crust. So future activities are possible. The last eruption of this volcano was a side eruption which created new land in the Gulf of Megara, where there are major port and refinery facilities. ==References== * W. D'Alessandro ''et al.'', "Natural degassing activity of the geothermal system of Sousaki (Greece): Environmental impact and gas hazard issues", ''8th International Conference on Gas Geochemistry'', 2005. * W. D'Alessandro, "Gas hazard: an often neglected natural risk in volcanic areas" 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sousaki volcano」の詳細全文を読む スポンサード リンク
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