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News
Monday, Oct 15, 2012
El Observatorio Volcanológico de Los Andes del Sur (OVDAS) perteneciente al Servicio Nacional de Geología y Minería (SERNAGEOMIN), durante el mes de octubre de 2012 se instalaron dos estaciones de monitoreo y vigilancia volcánica en las laderas del volcán Isluga, las que registraron eventos sísmicos. Además, se observó la presencia de una actividad fumarólica caracterizada por una columna de gases de color blanca. Según datos entregados por el guardia de CONAF y pobladores de Enquelga, no se han escuchado ruidos o percibido actividad sísmica, solo un olor a azufre cuando la pluma desciende hacia el valle dirigida por el viento. ... [Leer más]
 

Isluga volcano

estratovolcán 5550+ m / 18,208 ft
El norte de Chile, Bolivia y Argentina, América del sur, -19.15°S / -68.83°W
Current status: normal or dormant (1 out of 5) | Reports
Isluga volcano books
Last update: 31 Oct 2012
Typical eruption style: explosive
Erupciones del volcán Isluga: 1960(?), 1913(?), 1885, 1878, 1877, 1869, 1868, 1863 No hay terremotos recientes
Fecha / HoraRevista / ProfundidadDistanciaUbicación
Volcán Isluga volcano is a broad stratovolcano in northern Chile 7 km west of the Bolivian border and forms the western end of a group of volcanoes extending to Tata Sabaya volcano in Bolivia. Isluga volcano is part of the 175,000 hectares Isluga National Park.
Isluga's summit contains a morphologically young, 400 m wide crater at the western end of the elongated, snow-covered summit region. Many lava flows with distinct levees can be seen on the southern flank and in 1878, lava flows destroyed several towns. At present, there is fumarolic activity at Isluga volcano, the last confirmed eruption was a small explosive eruption in 1913.

Background:

Recent eruptions were phreatomagmatic and produced surges whose deposits can be found around the active crater. Holocene lava flows cover the northernmost ridge of the volcano.
An older glaciated dacite flow from the northwest side of the volcano has been dated at at 96,000 years. Lavas from Isluga overlie rocks from a dissected volcano (Quimsachatas) to the north and northeast, which erupted 566,000 years ago.
(From: Wörner et al (2000), "Geochronology (40Ar/39Ar, K-Ar and He-exposure ages) of Cenozoic magmatic rocks from Northern Chile (18-22°S): implications for magmatism and tectonic evolution of the central Andes", Rev. geol. Chile vol.27 n.2

Eruptions of Isluga volcano
Major eruptions occurred in 1868, 1869, 1877, and 1878, and smaller eruptions in 1863, 1885 and 1913. The activity reported in 1960 is uncertain.


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