Antillanca Group

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 40.771°S
  • 72.153°W

  • 1990 m
    6527 ft

  • 357153
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Antillanca Group.

The Global Volcanism Program has no Weekly Reports available for Antillanca Group.

The Global Volcanism Program has no Bulletin Reports available for Antillanca Group.

Geological Background

The Antillanca Group is a cluster of late-Pleistocene to Holocene basaltic-to-andesitic scoria cones, maars and small stratovolcanoes covering an area of 380 sq km SE of Lago Puyehue and NE of Lago Rupanco. The most prominent edifice is the small 1990-m-high Casablanca stratovolcano of Holocene age, which has a truncated conical profile and produced major explosive eruptions about 2910 and 2260 radiocarbon years ago. Older late-Pleistocene stratovolcanoes, such as Sarnoso on the SW side and Fiuchá on the NW side, are extensively dissected by glaciers. Fissures oriented in four major directions influence the orientation of the cones of the Antillanca complex. Thermal areas are found in scattered locations on the NW side of the complex.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0230 BCE ± 200 years Unknown Confirmed 5 Radiocarbon (corrected) Casablanca (Raihuén crater)
0960 BCE ± 150 years Unknown Confirmed 5 Radiocarbon (corrected)

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
Anticura Cone
Arrayanes Cone
Casablanca Stratovolcano 1990 m 40° 46' 16" S 72° 9' 11" W
Colorado Cone
Cordon de Alvarez Cone
Fiuchá Stratovolcano 1481 m 40° 42' 0" S 72° 13' 0" W
Frutilla, Cerro Cone 1585 m 40° 44' 0" S 72° 1' 0" W
Haique Cone
Pajaritos Cone
Piuquenes Cone
Sarnoso Stratovolcano 1630 m 40° 49' 0" S 72° 17' 0" W
Taza, La Cone
Ultimo Puesto Cone


Feature Name Feature Type Elevation Latitude Longitude


Feature Name Feature Type Elevation Latitude Longitude
Puyehue-Aguas Calientes Hot Springs Hot Spring

Photo Gallery

Casablanca volcano, whose summit is visible at the upper right, is the highest peak of the Antillanca volcano group. Raihuen crater (lower left) lies at the base of Casablanca. The Antillanca Group is a cluster of late-Pleistocene to Holocene scoria cones, maars, and small stratovolcanoes covering an area of 380 sq km SE of Lago Puyehue and NE of Lago Rupanco. Older late-Pleistocene stratovolcanoes have been extensively dissected by glaciers, but numerous small Holocene volcanic centers are present.

Photo by Klaus Dorsch, 2001 (University of Munich).


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

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

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

Lara L E, Moreno H, Naranjo J A, Matthews S, Perez de Arce C, 2006a. Magmatic evolution of the Puyehue-Cordon Caulle volcanic complex (40° S), Southern Andean Volcanic Zone: from shield to unusual rhyolitic fissure volcanism. J Volc Geotherm Res, 157: 343-366.

Lara L, Rodriguez C, Moreno H, Perez de Arce C, 2001. Geocronologia K-Ar y geoquimica del volcanismo plioceno superior-pleistoceno de los Andes del sur (39-42° S). Rev Geol Chile, 28: 67-90.

Moreno H, 1985. . (pers. comm.).

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.

Moreno H, 1976. The upper Cenozoic volcanism in the Andes of southern Chile (from 40°00' to 41°30' lat S). In: Gonzalez-Ferran O (ed) {Proc Symp Andean & Antarctic Volcanology Problems (Santiago, Chile, Sept 1974)}, Rome: IAVCEI, p 143-171.

Moreno H, Naranjo J A, 1991. The southern Andes volcanoes (33°-41° 30' S), Chile. 6th Geol Cong Chile, Excur PC-3, 26 p.

Naranjo J, Singer B, Moreno H, Lara L, Jicha B, 2008. Holocene tephrochronology of Puyehue and Casablanca volcanoes, southern Andes. IAVCEI Iceland Gen Assembly, Reykjavik 2008, abs 2-a P12 and poster.

Singer B S, Jicha B R, Haper M A, Naranjo J A, Lara L E, Moreno-Roa H, Lara L, 2008. Eruptive history, geochronology, and magmatic evolution of the Puyehue-Cordon Caulle volcanic complex, Chile. Geol Soc Amer Bull, 120: 599-618.

Volcano Types

Pyroclastic cone(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Basalt / Picro-Basalt
Andesite / Basaltic Andesite


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

Affiliated Databases

Large Eruptions of Antillanca Group 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.