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Michincha

Olca-Paruma

Stratovolcano · Chile-Bolivia · 5705m

The Olca-Paruma volcanic complex, seen here from the west, forms a 15-km-long E-W ridge forming the border between Chile and Bolivia and is comprised of several stratovolcanoes with Holocene lava flows. Volcán Olca lies near the western end of the complex. It is flanked to the east by Volcán Paruma, which is immediately west of the higher pre-Holocene Cerro Paruma volcano, the conical peak in the background. Volcán Paruma has been the source of conspicuous fresh lava flows and has displayed persistent fumarolic activity in recent years.
The Olca-Paruma volcanic complex, seen here from the west, forms a 15-km-long E-W ridge forming the border between Chile and Bolivia and is comprised of several stratovolcanoes with Holocene lava flows. Volcán Olca lies near the western end of the complex. It is flanked to the east by Volcán Paruma, which is immediately west of the higher pre-Holocene Cerro Paruma volcano, the conical peak in the background. Volcán Paruma has been the source of conspicuous fresh lava flows and has displayed persistent fumarolic activity in recent years. · Photo: Photo by José Naranjo, 2001 (Servico Nacional de Geologica y Mineria). · Wikimedia Commons
Type
Stratovolcano
Country
Chile-Bolivia
Region
South America Volcanic Regions / Central Andean Volcanic Arc
Elevation
5705m
Coordinates
-20.939, -68.413
Last eruption
Unknown
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

A 15-km-long E-W ridge forming the border between Chile and Bolivia is comprised of several stratovolcanoes with Holocene lava flows. Andesitic-dacitic lava flows extend as far as 5 km N from the active crater of Volcán Olca and to the north and west from vents farther to the west. Olca is flanked on the west by Cerro Michincha and on the east by Volcán Paruma, which is immediately west of the higher pre-Holocene Cerro Paruma volcano. Volcán Paruma has been the source of conspicuous fresh lava flows, one of which extends 7 km SE, and has displayed persistent fumarolic activity. The only reported historical activity from the complex was a flank eruption of unspecified character between 1865 and 1867, which SERNAGEOMIN notes is based on unconfirmed records.

From Wikipedia

Michincha is a stratovolcano on the border of Bolivia and Chile. It is part of an east–west trending ridge of stratovolcanoes. To its east lies Olca. The only historical activity from the complex was a flank eruption from 1865 to 1867.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1865~1865 · 1 eruptions · max VEI ?18651865186618661866

Detailed timeline

  1. 1865VEI ?Geological estimate
    1865 – 1867

External links

⚠ For reference only. Not for emergency response.