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Cerro Galan

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Title: Cerro Galan  
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Subject: Supervolcano, Antofagasta de la Sierra, Peter Francis (volcanologist)
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Cerro Galan

For other uses, see gentleman.
Location in Argentina
Elevation 5,912 m (19,396 ft)
Location Catamarca Province, Argentina
Range Andes

25°55′S 66°52′W / 25.917°S 66.867°W / -25.917; -66.867Coordinates: 25°55′S 66°52′W / 25.917°S 66.867°W / -25.917; -66.867

Type Caldera
Age of rock 2.2 million years
Last eruption Unknown

Cerro Galán is a caldera in Catamarca Province, Argentina, considered to be the best exposed large caldera in the world. It was formed 2.2 million years ago when 1,050 km3 of material was erupted, producing ignimbrite deposits stretching up to 100 km away. The caldera was originally the site of a large lake, but resurgence of the eastern caldera floor has confined the salty Laguna Diamante to the caldera's western edge.

See also


  • Cordillera de los Andes (in Spanish)
  • Cerro Galan - Volcanoes of the Central Andes
  • Cerro Galan Caldera, Argentina, from How Volcanoes Work, by Vic Camp, Department of Geological Sciences, San Diego State University
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