Pastos Grandes caldera

Pastos Grandes Caldera
Laguna Pastos Grandes, probably a remainder of the Pastos Grandes Caldera Lake. Resurgent center on the South (highest point not shown), caldera scarps on the right side of the laguna.
Highest point
Elevation	4,600 m (15,100 ft) (avg)
Listing	List of volcanoes in Bolivia
Coordinates	21°40′S 67°51′W / 21.667°S 67.850°W / -21.667; -67.850Coordinates: 21°40′S 67°51′W / 21.667°S 67.850°W / -21.667; -67.850
Geography
Location	Potosí Department, Bolivia
Geology
Mountain type	Caldera
Volcanic arc/belt	Altiplano–Puna volcanic complex

Pastos Grandes Caldera or Cerro Pastos Grandes (a resurgent centre) is an old caldera in the Potosí Department, Bolivia, which belongs to the Altiplano–Puna volcanic complex. Lagunas Pastos Grandes, Khara and Cachi may be remnants of a greater caldera lake. Size of the caldera: 50 km x 40 km. A large (VEI 7) eruption c. 2.9 million years ago produced 820 cubic kilometers (197 cu mi) of tephra.

References

Baker, M.C.W. (1981). "The nature and distribution of upper Cenozoic ignimbrite centres in the Central Andes". J. Volcanol. Geotherm. Res. 11: 293–315. Bibcode:1981JVGR...11..293B. doi:10.1016/0377-0273(81)90028-7.
de Silva, S.L.; Francis, P.W. (1989). "Correlation of large ignimbrites - two case studies from the Central Andes of N. Chile". J. Volcanol. Geotherm. Res. 37 (2): 133–149. Bibcode:1989JVGR...37..133D. doi:10.1016/0377-0273(89)90066-8.
Francis, P.W.; Baker, M.C.W. (1978). "Sources of two large-volume ignimbrites in the Central Andes: Some Landsat evidence". J. Volcanol. Geotherm. Res. 4: 81–87. Bibcode:1978JVGR....4...81F. doi:10.1016/0377-0273(78)90029-X.
Ort, M. H.; de Silva, S.; Jiminez, N.; Salisbury, M.; Jicha, B. R. and Singer, B. S. (2009). Two new supereruptions in the Altiplano-Puna Volcanic Complex of the Central Andes. doi:10.1016/S0377-0273(00)00270-5.
Stern, Charles R. (December 2004). "Active Andean volcanism: its geologic and tectonic setting". Revista geológica de Chile 31 (2): 161–206. doi:10.4067/S0716-02082004000200001. Retrieved 2010-03-15.
Pastos Grandes

Andean volcanoes

Northern Volcanic Zone (6° N–3° S)	Romeral Nevado del Ruiz Nevado del Tolima Nevado del Huila Puracé Doña Juana Galeras Cayambe Reventador Pichincha Antisana Aliso Soche Illiniza Cotopaxi Quilotoa Chimborazo Tungurahua Sangay

Central Volcanic Zone (15°–27° S)	Nevado Firura Sara Sara Sulimana Coropuna Wallqa Wallqa Sabancaya Ampato Andagua volcanic field Chachani Misti Ubinas Huaynaputina Tixani Tutupaka Yukamani Parina Quta Iru Phutunqu Azufre Sairecabur Pacana Licancabur Lascar Llullaillaco Galán San Francisco Ojos del Salado

Southern Volcanic Zone (33°–46° S)	Tupungato Tupungatito Maipo Calabozos Descabezado Grande Cerro Azul Nevado de Longaví Nevados de Chillán Antuco Copahue Callaqui Lonquimay Llaima Sollipulli Villarrica Quetrupillán Lanín Mocho-Choshuenco Carrán-Los Venados Puyehue-Cordón Caulle Casablanca Osorno Calbuco Hornopirén Huequi Michinmahuida Chaitén Corcovado Cay Macá Hudson

Austral Volcanic Zone (49°–55° S)	Lautaro Viedma Aguilera Reclus Burney Fueguino

Note: volcanoes are ordered by latitude from north to south

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Pastos Grandes caldera

See also

References