Volcán Mentolat is an active stratovolcano southern Chile located in the central part of Magdalena Island across the Puyuhuapi strait from Puerto Cisnes. The volcano has an ice-filled, 6 km wide caldera.
The most recent eruption at Mentolat volcano was around the year 1710. It may have produced a prominent young andesitic lava flow on the western slope of the volcano.
An explosive eruption about 7000 years ago produced a wide-spread pumice and scoria layer that extends to the SE.
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Intraplate volcanism: A third tectonic setting where volcanism occurs is believed to be the result of mantle plumes and not directly related to plate boundaries. So called hot spot volcanoes fall into this category.
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