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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 49.358°S
  • 73.28°W

  • 1500 m
    4920 ft

  • 358061
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Viedma.

 Available Weekly Reports

There are no Weekly Reports available for Viedma.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1988 Nov 15 ± 45 days Unknown Confirmed   Historical Observations Southernmost crater

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.

Katsui Y (ed), 1971. List of the World Active Volcanoes. Volc Soc Japan draft ms, (limited circulation), 160 p.

Kilian R, 1991. A volcanic eruption of 1988 on the Viedma glacier in the Patagonian Andes (49° 22' S). Preprint from unknown journal.

Shipton E, 1960. Volcanic activity on the Patagonian ice cap. Geog Jour, 126: 389-396.

An eruption in 1988 confirmed the presence of a postulated subglacial vent in the Patagonian Icefield NW of Viedma Lake (Kilian, 1991). A previously suggested vent location (Shipton, 1960) turned out to be a glacial nunatak of metamorphic and sedimentary rocks. The Volcán Viedma eruptive center is a subglacial dacitic volcano beneath the Patagonian Icecap west of the spectacular granitic spires of the Cerro Torre, Cerro Fitz Roy area. Only part of the older edifice rises above the surface of the icecap. Four large craters or calderas between 1.5 and 4 km in diameter are located along a N-S line. The 1988 eruption deposited ash and pumice on the Patagonian Icecap and produced a mudflow that reached Viedma Lake.