Calbuco viewed from the north alongside Road 225 on the shores of Llanquihue Lake. (February 11, 2010)
|Elevation||2,015 m (6,611 ft)|
|Prominence||1,946 m (6,385 ft)|
|Location||Los Lagos, Chile|
|Age of rock||Pleistocene|
|Volcanic arc/belt||South Volcanic Zone|
|Last eruption||April to May 2015|
Calbuco (kahl-BOO-koh; Spanish: Volcán Calbuco, pronounced: [bolˈkaŋ kalˈβuko]) is a stratovolcano located southeast of Llanquihue Lake and northwest of Chapo Lake, in the Los Lagos Region, and close to the cities of Puerto Varas and Puerto Montt in southern Chile. With an elevation of 2,105 meters above sea level, the volcano and the surrounding area are protected within the Llanquihue National Reserve.
Name and location
Calbuco is located partly in Puerto Varas Commune and partly in Puerto Montt Commune. It lies 49 km from the city of Puerto Varas and 69 km from Puerto Montt. Its name is thought to come from the Mapuche words "kallfü" (blue) and "ko" (water), meaning "blue water". It shares the name with Calbuco Island in nearby Reloncaví Sound as well as the city and commune of Calbuco, although it is not located there.
Calbuco is a very explosive andesite volcano whose lavas usually contain 55 to 60% silicon dioxide (SiO2). It is elongated in a SW-NE direction and is capped by a 400-500 meter wide summit crater. Its complex evolution included the collapse of an intermediate edifice during the late Pleistocene that produced a debris avalanche that reached Llanquihue Lake.
Calbuco has had 36 confirmed eruptions in its history, with 13 eruptions recorded since 1893. 20th century eruptions took place in 1906, 1907, 1909, 1911, 1917, 1929, 1932, 1945, 1961, 1972 and 1996. A series of three eruptions occurred from April 22–30, 2015.
The 1893-4 Calbuco eruption was one of the largest ever to take place in southern Chile, with debris ejected to distances of eight kilometres, accompanied by voluminous hot lahars. In the strong explosions of April 1917, 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 major eruption of 1961 sent ash columns 12–15 km high, produced plumes that dispersed mainly to the south east and emitted two lava flows. There was a minor, four-hour eruption on August 26, 1972. Strong fumarolic emission from the main crater was observed on August 12, 1996.
Calbuco erupted on April 22, 2015, for the first time in four decades. The eruption lasted 90 minutes and sent a plume of volcanic ash 10 km into the sky. A flow of lava was reported into Chapo Lake on the same day. The eruption caused airline flight cancellations to Chile as well as Argentina and Uruguay. Authorities evacuated 4,000 people from a zone with a 20 km radius from the volcano.
Further eruptions took place on April 24 and April 30, 2015. Experts have warned about the possibility of acid rain and lahars. On May 5, 2015, the Chilean government reported that tourist activity in the area had returned to "routine" levels.
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- "Calbuco Volcano: second eruption leaves towns and villages covered in thick blankets of dust". The Daily Mirror. April 24, 2015. Retrieved May 6, 2015.
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- Calbuco Volcano - Background Smithsonian Institution Global Volcanism Program, retrieved May 6, 2015
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- Chile Tourist Areas Returned To Routine Activity Following Calbuco Eruption Travelpulse.com, May 5, 2015, retrieved May 6, 2015
- González-Ferrán, Oscar (1995). Volcanes de Chile. Santiago, Chile: Instituto Geográfico Militar. p. 640 pp. ISBN 956-202-054-1. (Spanish)
- Biggar, John (2005). The Andes: A Guide for Climbers (3rd ed.). Andes Publishing (Scotland). p. 304 pp. ISBN 0-9536087-2-7.
|Wikimedia Commons has media related to Calbuco Volcano.|
- "Calbuco" Global Volcanism Program by Smithsonian Institution
- "Volcán Calbuco, Chile" on Peakbagger
- Roja: Declina actividad del volcán Calbuco tras segunda erupción on Sernageomin
- Se mantiene monitoreo permanente al volcán Calbuco on Onemi
- Videos 2015 Eruption
- Video Calbuco Volcano Erupts by National Geographic 2015-04-23
- Video Timelapse Calbuco Chile 2015-04-22 on YouTube