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Osorno

Stratovolcano · Chile · 2659m

The symmetrical, glacier-clad Osorno stratovolcano forms a renowned landmark between Todos Los Santos and Llanguihue lakes. It is seen here from the north, with Calbuco volcano visible at the extreme right. The 2652-m-high Osorno is one of the most active volcanoes of the southern Chilean Andes. Flank scoria cones and fissure vents, primarily on the west and SW sides, have produced lava flows that reached Lago Llanguihue. Historical eruptions have originated from both summit and flank vents.
The symmetrical, glacier-clad Osorno stratovolcano forms a renowned landmark between Todos Los Santos and Llanguihue lakes. It is seen here from the north, with Calbuco volcano visible at the extreme right. The 2652-m-high Osorno is one of the most active volcanoes of the southern Chilean Andes. Flank scoria cones and fissure vents, primarily on the west and SW sides, have produced lava flows that reached Lago Llanguihue. Historical eruptions have originated from both summit and flank vents. · Photo: Photo by Hugo Moreno (University of Chile). · Wikimedia Commons
Type
Stratovolcano
Country
Chile
Region
South America Volcanic Regions / Southern Andean Volcanic Arc
Elevation
2659m
Coordinates
-41.105, -72.496
Last eruption
1869
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

The symmetrical, glaciated, Osorno volcano towers above Todos los Santos and Llanquihué lakes. It was constructed over the SW part of a roughly 250,000-year-old eroded stratovolcano, La Picada, that has a mostly buried 6-km-wide caldera. The dominantly basaltic to basaltic andesite volcano includes two small dacitic lava domes on the NW and SSE flanks. Flank scoria cones and fissure vents, primarily on the W and SW sides, have produced lava flows that reached Lago Llanquihué. Frequent explosive eruptions including pyroclastic flows and surges have occurred during the past 14,000 years. Recorded eruptions have originated from summit and flank vents, producing basaltic and andesitic lava flows that have entered both Llanquihué and Todos los Santos lakes.

From Wikipedia

Osorno Volcano is a 2,652-metre-tall (8,701 ft) conical stratovolcano lying between Osorno Province and Llanquihue Province in the Los Lagos Region of southern Chile. It stands on the southeastern shore of Llanquihue Lake, and also towers over Todos los Santos Lake. Osorno is considered a symbol of the local landscape and, as such, tends to be the referential element of the area in regards to tourism. By some definitions, it marks the northern boundary of Chilean Patagonia.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1710 BCE~1511 BCE · 1 eruptions · max VEI ?318 BCE~119 BCE · 1 eruptions · max VEI ?278~477 · 1 eruptions · max VEI 4875~1074 · 1 eruptions · max VEI ?1074~1273 · 1 eruptions · max VEI ?1273~1471 · 1 eruptions · max VEI ?1471~1670 · 3 eruptions · max VEI 21670~1869 · 8 eruptions · max VEI 31710 BCE915 BCE808751670

Detailed timeline

  1. 1869VEI 2Observed
    1869 – Ongoing
  2. 1855VEI 2Observed
    1855 – Ongoing
  3. 1851VEI 2Observed
    1851 – Ongoing
  4. 1837VEI 2Observed
    1837-11-07 – Ongoing
  5. 1834VEI 3Observed
    1834-11-29 – 1835-02-24
    Summit & SSW side (Negrillar de Ensenada)
  6. 1790VEI 2Observed
    1790-03-09 – 1791-12-26
    SE base
  7. 1765 (±14 yrs)VEI 1Observed
    1765 – Ongoing
  8. 1719VEI 2Observed
    1719 – Ongoing
  9. 1644VEI 2Observed
    1644 – Ongoing
  10. 1640VEI 2Observed
    1640 – Ongoing
  11. 1575VEI 2Observed
    1575 – Ongoing
  12. 1310 (±75 yrs)VEI ?Geological estimate
    1310 – Ongoing
  13. 1220 (±100 yrs)VEI ?Geological estimate
    1220 – Ongoing
  14. 910 (±100 yrs)VEI ?Geological estimate
    910 – Ongoing
  15. 420 (±100 yrs)VEI 4Geological estimate
    420 – Ongoing
  16. 210 BCE (±75 yrs)VEI ?Geological estimate
    BCE 210 – Ongoing
  17. 1710 BCE (±75 yrs)VEI ?Geological estimate
    BCE 1710 – Ongoing

External links

⚠ For reference only. Not for emergency response.