Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 35.558°S
  • 70.496°W

  • 3508 m
    11506 ft

  • 357042
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Calabozos.

The Global Volcanism Program has no Weekly Reports available for Calabozos.

The Global Volcanism Program has no Bulletin Reports available for Calabozos.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Credible

3508 m / 11506 ft


Volcano Types

Pyroclastic cone(s)
Lava dome

Rock Types

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The 26 x 14 km composite late-Pleistocene Calabozos caldera produced major rhyodacitic-to-dacitic ashflow sheets of ~200-500 cu km magma each, collectively referred to as the Loma Seca Tuff, at 0.8, 0.3, and 0.15 million years ago. Eruptive activity has continued into the Holocene, forming the 20-25 cu km dacitic-to-andesitic Cerro del Medio complex at the southern end of the caldera and the four clustered vents of Descabezado Chico near the western caldera rim. The late-Holocene 2.5 cu km Escorias dacitic lava flow from Descabezado Chico traveled >30 km to the south. Several hot-spring clusters are present along the margin of the central resurgent uplift within the caldera.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Drake R E, 1976a. Chronology of Cenozoic igneous and tectonic events in the central Chilean Andes-latitudes 35.5 to 36° S. J Volc Geotherm Res, 1: 265-284.

Gonzalez-Ferran O, 1972. Distribucion del volcanismo activo de Chile y la reciente erupcion del Volcan Villarrica. Instituto Geog Militar Chile, O/T 3491.

Gonzalez-Ferran O, 1995. Volcanes de Chile. Santiago: Instituto Geografico Militar, 635 p.

Grunder A L, Mahood G A, 1988. Physical and chemical models of zoned silicic magmas: the Loma Seca Tuff and Calabozos caldera, southern Andes. J Petr, 29: 831-867.

Hildreth W, Drake R E, 1992. Volcan Quizapu, Chilean Andes. Bull Volc, 54: 93-125.

Hildreth W, Grunder A L, Drake R E, 1984. The Loma Seca tuff and the Calabozos caldera: a major ash-flow and caldera complex in the southern Andes of Chile. Geol Soc Amer Bull, 95: 45-54.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Moreno H, 1974. Airplane flight over active volcanoes of central-south Chile. Internatl Symp Volc Andean & Antarctic Volc Problems Guidebook, Excur D-3, 56 p.

The Global Volcanism Program is not aware of any Holocene eruptions from Calabozos. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Calabozos page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Feature Name Feature Type Elevation Latitude Longitude
Colorado, Cerro Cone 2928 m 35° 31' 37" S 70° 40' 1" W
Descabezado Chico Cone 3250 m 35° 30' 40" S 70° 37' 1" W
Medio, Cerro el Cone 3508 m 35° 33' 29" S 70° 29' 46" W


Feature Name Feature Type Elevation Latitude Longitude
Escorias, Crater de las Crater 3092 m 35° 31' 0" S 70° 36' 0" W


Feature Name Feature Type Elevation Latitude Longitude
Cajon los Calabozos Thermal 2475 m 35° 33' 0" S 70° 34' 0" W
Llolli, Baños de Thermal 2100 m 35° 23' 0" S 70° 35' 0" W

Photo Gallery

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 by Hugo Moreno (University of Chile).

Smithsonian Sample Collections Database

There are no samples for Calabozos in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites

Large Eruptions of Calabozos Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.