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Lonquimay

Stratovolcano · Chile · 2832m

Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents.
Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents. · Photo: Photo by Norm Banks, 1990 (U.S. Geological Survey). · Wikimedia Commons
Type
Stratovolcano
Country
Chile
Region
South America Volcanic Regions / Southern Andean Volcanic Arc
Elevation
2832m
Coordinates
-38.379, -71.586
Last eruption
1990
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Lonquimay is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age immediately SE of Tolguaca volcano. A glacier fills its summit crater and flows down the S flank. It is dominantly andesitic, but basalt and dacite are also found. The prominent NE-SW Cordón Fissural Oriental fissure zone cuts across the entire volcano. A series of NE-flank vents and scoria cones were built along an E-W fissure, some of which have been the source of voluminous lava flows, including those during 1887-90 and 1988-90, that extended out to 10 km.

From Wikipedia

Lonquimay Volcano is a stratovolcano of late-Pleistocene to dominantly Holocene age, with the shape of a truncated cone. The cone is largely andesitic, though basaltic and dacitic rocks are present. It is located in the La Araucanía Region of Chile, immediately SE of Tolhuaca volcano. Sierra Nevada and Llaima are their neighbors to the south. The snow-capped volcano lies within the protected area Malalcahuello-Nalcas.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1853~1867 · 1 eruptions · max VEI 31880~1894 · 1 eruptions · max VEI 31921~1934 · 1 eruptions · max VEI 21934~1948 · 1 eruptions · max VEI ?1975~1988 · 1 eruptions · max VEI 318531880192119481975

Detailed timeline

  1. 1988VEI 3Observed
    1988-12-25 – 1990-01-24
    NE flank (Navidad Crater)
  2. 1940VEI ?Geological estimate
    1940-02 – Ongoing
  3. 1933VEI 2Observed
    1933-01-04 – Ongoing
  4. 1887VEI 3Observed
    1887-06-02 – 1890-01
    NE flank
  5. 1853VEI 3Observed
    1853-02 – Ongoing

External links

⚠ For reference only. Not for emergency response.