Pastos Grandes caldera

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Pastos Grandes Caldera
Laguna Pastos Grandes Bolivia Satellite map 67.80112W 21.png
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
Location Potosí Department,
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.

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