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Vulcano Osorno

Osorno

Stratovulcano · Chile · 2659 m

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. · Foto: Photo by Hugo Moreno (University of Chile). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Chile
Regione
South America Volcanic Regions / Southern Andean Volcanic Arc
Altitudine
2659 m
Coordinate
-41.105, -72.496
Ultima eruzione
1869
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

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.

Sintesi da Wikipedia

L'Osorno è uno stratovulcano cileno delle Ande, che si trova nel territorio della Provincia di Llanquihue.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1710 BCE~1511 BCE · 1 eruzioni · VEI max. ?318 BCE~119 BCE · 1 eruzioni · VEI max. ?278~477 · 1 eruzioni · VEI max. 4875~1074 · 1 eruzioni · VEI max. ?1074~1273 · 1 eruzioni · VEI max. ?1273~1471 · 1 eruzioni · VEI max. ?1471~1670 · 3 eruzioni · VEI max. 21670~1869 · 8 eruzioni · VEI max. 31710 BCE915 BCE808751670

Cronologia dettagliata

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

Link esterni

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