Antillanca Group

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 40.771°S
  • 72.153°W

  • 1990 m
    6527 ft

  • 357153
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Antillanca Group.

 Available Weekly Reports

There are no Weekly Reports available for Antillanca Group.

Summary of 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)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. 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. Additional discussion of data sources can be found under Volcano Data Criteria.

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.

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.