Descabezado Grande volcano eruptions

stratovolcanoes 3953 m / 12,969 ft
Argentinien/Chile (Zentrum), Südamerika, -35.58°S / -70.75°W
Eruption list: 2009 (?), 1932-33


2009 possible minor activity

On 28 April 2009 fumaroles were discovered on the northern sector of Descabezado Grande volcano. Photos taken from Armerillo, 33 km SW of the volcano, showed elevated emissions of fine pale brown dust or ash from the NE flank of the volcano. The emissions may have been from minor eruptive activity, or rock falls of material from northeastern slopes of the crater.
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Source: Oficina Nacional de Emergencia – Chilean government emergencies office

1982 fumarolic activity

Gas and vapour plumes were observed rising from the main crater on 19 March 1982. This was the first activity at the main crater since 1933.
(GVP monthly bulletin)

1932 eruption of Descabezado Grande

Descabezado Grande Volcano erupted only 2 weeks after the Plinian eruption at nearby Cerro Azul (Quizapu) volcano and it is reasonable to believe that the one played a role in triggering the other.
The first documented fumarolic activity on the volcano was noted high on the west flank between 23-28 April 1932.
On or around 5 June 1932, the volcano had a flank vent eruption on the NNE slope that produced up to 8 km / 26,000 foot ash column (VEI ~3) and deposited 40 meters of tephra around the vent, where a new 600 m crater was formed. Towns in the Central Valley experienced light ash fall.
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Source:
- GVP
- J. B. Stone, and Ingerson Earl (1934) "Some volcanoes of southern Chile", American Journal of Science, Series 5 Vol. 28, October 1934, P.269-287
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