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Mount Hudson : ウィキペディア英語版 | Mount Hudson
Mount Hudson (locally known as Volcán Hudson) is a stratovolcano in southern Chile, and the site of one of the largest eruptions in the twentieth century. The mountain itself is covered by a glacier. There is a caldera at the summit from an ancient eruption; modern volcanic activity comes from inside the caldera. Mount Hudson is named after Francisco Hudson, a 19th-century Chilean Navy hydrographer. == Eruptive history == Large eruptions around 4750 BCE and 1890 BCE are believed to have been of Volcanic Explosivity Index (VEI) 6; these are probably responsible for the large caldera. The 4750 BCE eruption may have wiped out many if not all groups of early man living in central Patagonia at that time, based on evidence from the Los Toldos archaeological site.〔Cardich, A. (1985) "Una fecha radiocarbonica mas de la cueva 3 de Los Toldos (Santa Cruz, Argentina)" ''Relaciones de la Sociedad Argentina de Antropología, Nueva Serie'' 16: 269-275〕 Recently, the volcano has had moderate eruptions in 1891 and 1971 as well as a large eruption in 1991.
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