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°WCoordinates: 21°40′S 67°51′W / 21.667°S 67.850°W |
| 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.
See also
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
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