Descabezado Grande
| Descabezado Grande | |
|---|---|
 | |
| Elevation | 3,953 m (12,969 ft) |
| Location | |
| Location | Central Chile |
| Range | Andes |
| Coordinates | 35°35′S 70°45′W / 35.583°S 70.750°W |
| Geology | |
| Type | Stratovolcano |
| Age of rock | Pleistocene |
| Volcanic arc/belt | South Volcanic Zone |
| Last eruption | 1933 |
Descabezado Grande (also Cerro Azul or Quizapu[1]) is a stratovolcano located in the Maule Region of central Chile. It is capped by a 1.4-kilometre-wide (0.9 mi) ice-filled caldera and named for its flat-topped form, as descabezado means "headless" in Spanish. A smaller crater about 500 metres (1,600 ft) wide is found in the northeast part of the caldera, and it has active fumaroles.
The volcano is composed of andesite and rhyodacite lava flows along with pyroclastic flow deposits. It has a basal diameter of about 10 by 12 kilometres (6 mi × 8 mi) and a total volume of about 30 cubic kilometres (7.2 cu mi). Along with Cerro Azul, 7 kilometres (4.3 mi) to the south, it lies at the center of a 20-by-30-kilometre (12 mi × 20 mi) volcanic field.
See also
Expeditions
Francisco Pacheco, a highly recommended local guide ('arriero'), can organize the climbing expedition with horses. Mobile +56-9-9763-5447 (he only speaks Spanish)
References
- "Descabezado Grande". Global Volcanism Program, Smithsonian Institution. http://www.volcano.si.edu/world/volcano.cfm?vnum=1507-05%3D.
- González-Ferrán, Oscar (1995). Volcanes de Chile. Santiago, Chile: Instituto Geográfico Militar. p. 640 pp. ISBN 956-202-054-1. (in Spanish; also includes volcanoes of Argentina, Bolivia, and Peru)
- Biggar, John (2005). The Andes: A Guide for Climbers (3rd ed.). Andes Publishing (Scotland). p. 304 pp. ISBN 0-9536087-2-7.
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