Calbuco (volcano)

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Calbuco

Calbuco as seen from Volcán Osorno.
Elevation 2,003 metres (6,570 feet)
Location Chile
Range Andes
Coordinates 41.32° S 72.60° W
Type Stratovolcano
Age of rock Pleistocene
Last eruption 1972

Calbuco is a stratovolcano in southern Chile, located south of south of Lake Llanquihue in the Los Lagos Region. It is a very explosive andesite volcano that underwent edifice collapse in the late Pleistocene, producing a volcanic debris avalanche that reached the lake.

[edit] Volcanic activity

Calbuco has had at least 9 eruptions since 1837, with the latest one in 1972. One of the largest historical eruptions in southern Chile took place there in 1893-1894. Violent eruptions ejected 30-cm bombs to distances of 8 km from the crater, accompanied by voluminous hot lahars. Strong explosions occurred in April 1917, and a lava dome formed in the crater accompanied by hot lahars. Another short explosive eruption in January 1929 also included an apparent pyroclastic flow and a lava flow. The last major eruption of Calbuco, in 1961, sent ash columns 12-15 km high and produced plumes that dispersed mainly to the SE and two lava flows were also emitted. There was a minor, 4-hour eruption on August 26, 1972. Strong fumarolic emission from the main crater was observed on August 12, 1996.

[edit] References

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