Volcano Type: Stratovolcanoes
Volcano Status: Historical
Last Known Eruption: 1998
Summit Elevation: 4107 m 13,474 feet
Latitude: 35.240°S 35°14’24″S
Longitude: 70.570°W 70°34’12″W
Planchón-Peteroa Volcano is located in central Chile-Argentina border. The volcano contains several overlapping calderas. Part of Planchón collapsed 11,000 years ago producing Río Teno debris avalanche, which traveled 95 km. Peteroa contains a small steaming crater lake.
Planchón-Peteroa
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 basaltic and basaltic-andesite Volcán Planchón, 6 km to the north. 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. Peteroa has been active into historical time and contains a small steaming crater lake. Historical eruptions from the Planchón-Peteroa complex have been dominantly explosive, although lava flows were erupted in 1837 and 1937.
Originally posted 2010-08-20 04:59:51.
