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. | |
| Elevation | 4,600 m (15,100 ft)(avg) |
| Listing | List of volcanoes in Bolivia |
| Location | |
| Location |
Potosí Department, Bolivia |
| Coordinates | 21°40′S 67°51′W / 21.667°S 67.850°WCoordinates: 21°40′S 67°51′W / 21.667°S 67.850°W |
| Geology | |
| 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