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Country: | Argentina | |
| Subregion Name: | Argentina | ||
| Volcano Number: | 1505-21- | ||
| Volcano Type: | Caldera | ||
| Volcano Status: | Holocene | ||
| Last Known Eruption: | Unknown | ||
| Summit Elevation: | 4400 m | 14,436 feet | |
| Latitude: | 26.77°S | 26°46'0"S | |
| Longitude: | 67.72°W | 67°43'0"W | |
| The 6-km-wide Robledo caldera in NW Argentina is located 80 km SW of the much larger and better known Cerro Galán caldera. The Holocene Cerro Blanco del Robledo lava dome is located on the southern rim of the Robledo caldera (de Silva and Francis, 1991). Extensive rhyolitic pumice-fall deposits surround the dome. Well-preserved pyroclastic-flow deposits erupted prior to extrusion of Cerro Blanco are exposed on the floor of the caldera and on its NW flanks. Satellite geodetic surveys in the central Andes (Pritchard and Simons, 2002) showed subsidence of Robledo caldera in the 1990s. | |||
