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Global Volcanism Program | Image GVP-04840

Planchón-Peteroa is a complex volcano with several overlapping calderas.  Activity began during the Pleistocene with construction of Volcán Azufre, followed by formation of Volcán Planchón, 6 km to the north.  The youngest volcano, Volcán Peteroa, consisting of scattered vents between Azufre and Planchón, has been active into historical time and contains a small steaming crater lake. Historical eruptions have been dominantly explosive, although lava flows were erupted in 1837 and 1937. Photo by Hugo Moreno (University of Chile).

Planchón-Peteroa is a complex volcano with several overlapping calderas. Activity began during the Pleistocene with construction of Volcán Azufre, followed by formation of Volcán Planchón, 6 km to the north. The youngest volcano, Volcán Peteroa, consisting of scattered vents between Azufre and Planchón, has been active into historical time and contains a small steaming crater lake. Historical eruptions have been dominantly explosive, although lava flows were erupted in 1837 and 1937.

Photo by Hugo Moreno (University of Chile).


Planchón-Peteroa