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Calabozos

Caldera · Chile · 3508m

The 26 x 14 km late-Pleistocene Calabozos caldera contains several post-caldera vents of Holocene age. The Descabezado Chico group (mid right-center) was constructed over the buried western rim of the caldera. The Cerro de Medio group (mid extreme-right) grew within the southern part of the caldera. No historical eruptions are known, but hot-spring clusters occur within the caldera.
The 26 x 14 km late-Pleistocene Calabozos caldera contains several post-caldera vents of Holocene age. The Descabezado Chico group (mid right-center) was constructed over the buried western rim of the caldera. The Cerro de Medio group (mid extreme-right) grew within the southern part of the caldera. No historical eruptions are known, but hot-spring clusters occur within the caldera. · Photo: Photo by Hugo Moreno (University of Chile).
Type
Caldera
Country
Chile
Region
South America Volcanic Regions / Southern Andean Volcanic Arc
Elevation
3508m
Coordinates
-35.558, -70.496
Last eruption
Unknown
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Dacite
Geological summary

The composite late-Pleistocene Calabozos caldera (14 x 26 km) produced major rhyodacitic-to-dacitic ashflow sheets of ~200-500 km3 each, collectively referred to as the Loma Seca Tuff, at 800,000, 300,000, and 150,000 years ago. Eruptive activity has continued into the Holocene, forming the 20-25 km3 and the four clustered vents of Descabezado Chico near the western caldera rim. The late-Holocene 2.5 km3 Escorias dacitic lava flow from Descabezado Chico traveled more than 30 km S. Several hot-spring clusters are present along the margin of the central resurgent uplift within the caldera.

From Wikipedia

Calabozos is a Holocene caldera in central Chile's Maule Region. Part of the Chilean Andes' volcanic segment, it is considered a member of the Southern Volcanic Zone (SVZ), one of the three distinct volcanic belts of South America. This most active section of the Andes runs along central Chile's western edge, and includes more than 70 of Chile's stratovolcanoes and volcanic fields. Calabozos lies in an extremely remote area of poorly glaciated mountains.

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Eruption history

Detailed timeline

No eruption records available.

External links

⚠ For reference only. Not for emergency response.