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Viedma (volcano) : ウィキペディア英語版 | Viedma (volcano)
Viedma ((:ˈbjeðma)) is a subglacial volcano located below the ice of the Southern Patagonian Ice Field, an area disputed between Argentina and Chile. The 1988 eruption deposited ash and pumice on the ice field and produced a mudflow that reached Viedma Lake.〔 The edifice of the volcano is mainly composed out of basalt or older silica poor basement rocks, while ejecta have SiO2 contents between 62 and 66%. Numerous ash layers in the Viedma lake indicate numerous past eruptions. ==See also==
* List of volcanoes in Argentina * List of subglacial volcanoes
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「Viedma (volcano)」の詳細全文を読む
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