Seal Nunataks Group

Photo of this volcano
Google Earth icon
Google Earth Placemark
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 65.03°S
  • 60.05°W

  • 368 m
    1207 ft

  • 390050
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Seal Nunataks Group.

 Available Weekly Reports

There are no Weekly Reports available for Seal Nunataks Group.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1980 Jun 15 ± 545 days ] [ Unknown ] Uncertain     Dallman, Murdoch
[ 1893 Dec 11 ] [ Unknown ] Uncertain 1   Lindenberg Island

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.

Baker P E, 1968. Comparative volcanology and petrology of the Atlantic island arcs. Bull Volc, 32: 189-206.

Berninghausen W H, Neumann van Padang M, 1960. Antarctica. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 10: 1-32.

Gonzalez-Ferran O, 1983. The Seal Nunataks: an active volcanic group on the Larsen Ice Shelf, West Antarctica. In: Oliver R L, James P R, Jago J B (eds) {Antarctic Earth Science}, New York: Cambridge Univ Press, p 334-337.

LeMasurier W E, Thomson J W (eds), 1990. Volcanoes of the Antarctic Plate and Southern Oceans. Washington, D C: Amer Geophys Union, 487 p.

Smellie J L, Hole M J, 1997. Products and processes in Pliocene-Recent, subaqueous to emergent volcanism in the Antarctic Peninsula: examples of englacial Surtseyan volcano construction. Bull Volc, 58: 628-646.

The Seal Nunataks are a group of 16 nunataks emerging from the Larsen Ice Shelf east of Graham Land Peninsula. They have been described as separate volcanic vents or remnants of a large shield volcano. Fumarolic activity was reported from Murdoch and Dallman cones in 1982, and fresh-looking pyroclastics and a lava flow at Dallman (not observed in 1979) were seen on the ice surface three years later (González-Ferrán 1983). Fumarolic activity was observed at Christensen in 1893, and Lindenberg was observed in eruption in 1893. Baker (1968) saw cinders on the ice surface, suggesting a 20th-century eruption. A 1988 British expedition noted that tephra away from nunataks was found only in ice-cored moraines, suggesting a glacial rather than pyroclastic origin. They noted no fumarolic activity, although water vapor resulting from radiant heating of ice-cored moraines was observed.