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Congro Volcanic Fissural System : ウィキペディア英語版 | Congro Volcanic Fissural System
The Congro Volcanic Fissural System ((ポルトガル語:Sistema Vulcânico Fissural do Congro)) is a system of scoria cones that build up the central region of the island of São Miguel (between the Água de Pau and Furnas volcanoes). This volcano is very young with most of it only 5000 years old. ==History== The history of this volcanic system is dominated by basaltic, fissural, Hawaiian and Strombolian eruptions aligned in a dominantly west-northwest to east-southeast direction. Many of the products of these eruptions are visible in systematic bands of thick bands of ash and pumice, resulting from many of the scoria cones located in the zone.〔 In the last 5000 years there is evidence of episodic Phreatomagnetic eruptions from trachyte evidence, dated to 3.800± 400 years B.C., that originated the Lagoa do Congro maar.〔
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「Congro Volcanic Fissural System」の詳細全文を読む
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