Antofagasta Volcanic Field

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  • Argentina
  • South America
  • Pyroclastic cone(s)
  • Unknown - Evidence Uncertain
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 26.12°S
  • 67.4°W

  • 3495 m
    11464 ft

  • 355180
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Antofagasta Volcanic Field.

The Global Volcanism Program has no Weekly Reports available for Antofagasta Volcanic Field.

The Global Volcanism Program has no Bulletin Reports available for Antofagasta Volcanic Field.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Uncertain

3495 m / 11464 ft


Volcano Types

Pyroclastic cone(s)

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 Antofagasta de la Sierra volcanic field is located SW of Beltran volcano, between the Salar de Antofalla on the west and the massive Cerro Galán caldera on the east. The field contains several very youthful looking basaltic-andesite scoria cones and fresh-looking lava flows, which may only be a few thousand years old (Francis, 1982; de Silva and Francis, 1991). A concentration of scoria cones and lava flows east of the NE-SW-trending Salar de Antofalla, known as the Salar de Antofalla volcanic field, also have a youthful appearance, although precise ages are not known. New Ar-Ar age dates for 22 samples taken from throughout the main part of the field ranged from 7.3 to less than 0.1 Ma (Risse et al., 2008); older age dates primarily from the Antofalla field area had been in the 0.07-6.64 Ma range. However, the area about 7 km south of the town of Antofagasta de la Sierra with the two Alumbrera cinder cones and lava flows with the most pristine appearance, and considered to be perhaps only a few thousand years old, has not been sampled and dated in any known study. An ignimbrite underlying the Alumbrera lavas was dated by Risse et al. (2008) at 7.3 Ma.


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

de Silva S L, Francis P W, 1991. Volcanoes of the Central Andes. Berlin: Springer-Verlag, 216 p.

Francis P W, 1982. The Cerro Galan caldera, Argentina. Earthq Inf Bull, 14: 124-133.

Francis P W, Hammill M, Kretzschmar G, Thorpe R S, 1978. The Cerro Galan caldera, north-west Argentina and its tectonic setting. Nature, 274: 749-751.

Francis P W, Sparks R S J, Hawkesworth C J, Thorpe R S, Pyle D M, Tait S R, Mantovani M S, McDermott F, 1989. Petrology and geochemistry of volcanic rocks of the Cerro Galan caldera, northwest Argentina. Geol Mag, 126: 515-547.

Hormann P K, Pichler H, Zeil W, 1973. New data on the young volcanism in the Puna of NW-Argentina. Geol Rundschau, 62: 397-405.

Risse A, Trumbull R B, Coira B, Kay S M, van den Bogaard P, 2008. 40Ar/39Ar geochronology of mafic volcanism in the back-arc region of the southern Puna plateau, Argentina. Journal of South American Earth Sciences 26, 1-15.

The Global Volcanism Program is not aware of any Holocene eruptions from Antofagasta Volcanic Field. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Antofagasta Volcanic Field 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.


Antofagasta de la Sierra


Feature Name Feature Type Elevation Latitude Longitude
Alumbrera Cone 3604 m 26° 8' 58" S 67° 23' 0" W
Antofagasta Cone 3550 m 26° 7' 47" S 67° 24' 36" W
Carachi Pampa Cone 3443 m 26° 28' 25" S 67° 28' 2" W
Jote Cone 3704 m 26° 19' 31" S 67° 19' 45" W
Salar de Antofalla Volcanic field 25° 50' 0" S 67° 37' 0" W

Photo Gallery

The Antofagasta de la Sierra volcanic field, located between the elongated NE-SW-trending Salar de Antofalla and the massive Cerro Galán caldera to the east, contains the youngest volcanic vents of the Argentinian Puna region. The area includes several "extremely youthful" scoria cones, such as the ones seen here from the SW. Some cones have been estimated to be only a few thousand years old.

Photo by Ben Edwards, 1998 (Dickinson College, Pennsylvania).

Smithsonian Sample Collections Database

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

Affiliated Sites

Large Eruptions of Antofagasta Volcanic Field 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.