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News
Wednesday, May 15, 2019
Servicio Nacional de Geología and Minería (SERNAGEOMIN) Observatorio Volcanológico de Los Andes del Sur (OVDAS) raised the Alert Level for Osorno to Yellow (the second lowest level on a four-color scale) on 8 May, due to a gradual increase in the number and magnitude of seismic events recorded during 1-30 April. leer todo
 

Osorno volcano

estratovolcán 2652 m / 8,701 ft
El sur de Chile y Argentina, América del sur, -41.1°S / -72.49°W
Current status: normal or dormant (1 out of 5) | Reports
Osorno volcano books
Last update: 15 May 2019 (seismic unrest)
Typical eruption style: effusive
Erupciones del volcán Osorno: 1869, 1855, 1851, 1837, 1834-35, 1790-91, 1765, 1719, 1644(?), 1640(?), 1575(?), 1310 No hay terremotos recientes
Fecha / HoraRevista / ProfundidadDistanciaUbicación
Osorno volcano is a symmetrical, glacier-covered stratovolcano in southern Chile, rising above Todos los Santos and Llanquihué lakes.
Osorno is one of the most active volcanoes of Chile. Historical eruptions have often produced produced lava flows. Many eruptions have occurred from both summit and flank vents and fissures, the latter mostly on the west and SW sides. Lava flows from its eruptions have reached Todos los Santos and Llanquihué lakes.
While its historic activity was dominantly effusive, many explosive eruptions which generated pyroclastic flows and surges have been identified to have occurred during the past 14,000 years.

Background:

Osorno volcano almost exclusively consists of basaltic to basaltic-andesitic lavas, with the exception of 2 small dacitic lava domes on the NW and SSE flanks.
Geology of Osorno volcano
The present-day cone of Osorno was constructed partly above a roughly 250,000-year-old eroded stratovolcano, La Picada, which has a mostly buried 6-km-wide caldera. La Picada underlies Osorno on the NE and has postglacial maars and scoria cones.
Source: Smithsonian / GVP volcano information

Osorno Fotos:




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