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Planchón-Peteroa

Planchon-Peteroa

Stratovolcano · Chile · 3977m

An aerial view from the NW overlooks Planchón-Peteroa, a complex volcano with several overlapping calderas. In the left foreground is the caldera wall of Planchón volcano. The crater complex of Peteroa is in the center, and Volcán Azufre lies at the upper right. Activity began in the Pleistocene at Volcán Azufre, followed by formation of Volcán Planchón, 6 km to the north. Volcán Peteroa has been active into historical time and contains a small steaming crater lake.
An aerial view from the NW overlooks Planchón-Peteroa, a complex volcano with several overlapping calderas. In the left foreground is the caldera wall of Planchón volcano. The crater complex of Peteroa is in the center, and Volcán Azufre lies at the upper right. Activity began in the Pleistocene at Volcán Azufre, followed by formation of Volcán Planchón, 6 km to the north. Volcán Peteroa has been active into historical time and contains a small steaming crater lake. · Photo: Photo by Oscar González-Ferrán (University of Chile). · Wikimedia Commons
Type
Stratovolcano
Country
Chile
Region
South America Volcanic Regions / Southern Andean Volcanic Arc
Elevation
3977m
Coordinates
-35.223, -70.568
Last eruption
2025
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Planchón-Peteroa is an elongated complex volcano along the Chile-Argentina border with several overlapping calderas. Activity began in the Pleistocene with construction of the basaltic andesite to dacitic Volcán Azufre, followed by formation of the basaltic and basaltic andesite Volcán Planchón, 6 km N. About 11,500 years ago much of Azufre and part of Planchón collapsed, forming the massive Río Teno debris avalanche, which traveled 95 km to reach Chile's Central Valley. Subsequently, Volcán Planchón II was formed. The youngest volcano, andesitic and basaltic andesite Volcán Peteroa, consists of scattered vents between Azufre and Planchón, and and contains a small steaming crater lake. Reported eruptions from the complex have been dominantly explosive, although lava flows were emplaced in 1837 and 1937.

From Wikipedia

Planchón-Peteroa is a complex volcano extending in a north–south direction along the border between Argentina and Chile. It consists of volcanoes of various ages with several overlapping calderas. Those include Volcán Planchón, Volcán Peteroa and Volcán Azufre.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
5080 BCE~4843 BCE · 1 eruptions · max VEI 3841~1078 · 1 eruptions · max VEI 31551~1788 · 3 eruptions · max VEI 41788~2025 · 20 eruptions · max VEI 25080 BCE3422 BCE1527 BCE1301788

Detailed timeline

  1. 2025VEI ?Observed
    2025-10-25 – 2025-12-04
  2. 2018VEI 1Observed
    2018-11-07 – 2019-05-07
    Peteroa Crater
  3. 2011VEI 2Observed
    2011-02-17 – 2011-06-26
    Peteroa
  4. 2010VEI 2Observed
    2010-09-06 – 2010-10-13
    Peteroa
  5. 1998VEI 1Observed
    1998-11-18 – 1998-11-21
  6. 1991VEI 2Observed
    1991-02-09 – 1991-03-02
    Peteroa
  7. 1967VEI 1Geological estimate
    1967-02-16 – Ongoing
    Peteroa (1889-94 crater)
  8. 1962VEI 1Observed
    1962-01-16 – Ongoing
    Peteroa
  9. 1960VEI 1Observed
    1960-07-10 – Ongoing
    Petoroa (1889-94 crater)
  10. 1959VEI 1Observed
    1959-11-06 – Ongoing
    Petoroa (1889-94 crater)
  11. 1938VEI 2Observed
    1938-09 – 1938-10
    Peteroa
  12. 1937VEI 2Observed
    1937-04 – 1937-05-05
    Petoroa (south of 1889-94 crater)
  13. 1889VEI 2Observed
    1889-09 – 1894
    Peteroa (SE of 1762 crater)
  14. 1878VEI 2Observed
    1878 – Ongoing
    Peteroa
  15. 1872VEI ?Geological estimate
    1872 – Ongoing
  16. 1869VEI ?Geological estimate
    1869 – Ongoing
  17. 1860VEI 2Observed
    1860 – Ongoing
    Peteroa
  18. 1842VEI ?Geological estimate
    1842 – Ongoing
  19. 1837VEI 2Observed
    1837-02 – Ongoing
    Peteroa
  20. 1835VEI 2Observed
    1835 – Ongoing
    Peteroa
  21. 1762VEI 4Observed
    1762-12-03 – Ongoing
    Peteroa (2 km S of Planchón summit)
  22. 1751VEI 2Observed
    1751-11 – 1751-12
  23. 1660VEI 3Observed
    1660 – Ongoing
    Peteroa
  24. 900 (±100 yrs)VEI 3Geological estimate
    900 – Ongoing
  25. 5080 BCE (±75 yrs)VEI 3Geological estimate
    BCE 5080 – Ongoing

External links

⚠ For reference only. Not for emergency response.