Incahuasi, Nevado de (Chile-Argentina)

Status Unknown Eruption Unknown 6638m
Stratovolcano(es) (Subduction zone / Continental crust (> 25 km))

Incahuasi, Nevado de

Nevado de Incahuasi is a complex volcanic massif that straddles the Chile-Argentina border ENE of Nevados Ojos del Salado volcano. Two stratovolcanoes occupy a compound 3.5-km-wide caldera, and Pleistocene lava domes are located on the W and SW flanks. The youngest stratovolcano is capped by a 1-km-wide crater, and dacitic lava flows radiate down the flanks. The fresh-looking morphology of the youngest products suggest a Holocene (González-Ferrán, 1995) or possible Holocene (de Silva 2007, pers. comm.) age. A dacitic lava dome partially fills an arcuate crater on the E flank of Incahuasi (which means "House of the Inca" in Quechua). Four pyroclastic cones are located 7 km to NE and produced basaltic-andesite lava flows that cover an area of 10 km2.

Snow and ice drapes the western flank of Nevado Incahuasi along the Chile/Argentina border, as seen from Paso las Lozas at 5100 m. Nevado de Incahuasi is a complex volcanic massif located ENE of Nevados Ojos del Salado volcano. Two stratovolcanoes occupy a compound 3.5 -km-wide caldera. Pleistocene lava domes are located on the west and SW flanks of the 6621-m-high Nevado de Incahuasi, one of the world's highest volcanoes.

Photo by Oscar González-Ferrán (University of Chile).

Last updated 2019-08-04 00:28:03

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