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Seal Nunataks Volcanic Field

Photo of this volcano
  • Antarctica
  • Cluster (Pyroclastic cone(s))
  • Pleistocene
  • Country
  • Landform (Volc Type)
  • Last Known Eruption
  • 65.03°S
  • 60.05°W

  • 368 m
    1207 ft

  • 390050
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number


Most Recent Bulletin Report: September 1982 (SEAN 07:09) Citation IconCite this Report

Two previously unknown recent volcanoes identified

In January 1982, geologists from the Universidad de Chile found evidence of recent volcanism at two sites in the Seal Nunataks Group that had not previously been identified as recent volcanic centers. At Dallman (65.02°S, 60.32°W), very fresh-looking basaltic lava had emerged from the central crater and flowed to the NW foot of the volcano. Active fumaroles were observed at the N side of the summit. Abundant basaltic lapilli and ash covered wide areas of the Larsen Ice Shelf in the vicinity of Murdoch Volcano (65.03°S, 60.03°W). Portions of these deposits were covered by fresh snow. Fumaroles were active in a small parasitic cinder cone SE of Murdoch.

In December 1893, C.A. Larsen saw an eruption of black ash from Lindenberg (64.92°S, 59.70°W) and solfataric activity at Christensen (65.10°S, 59.57°W), but no activity was observed at either of these volcanoes in 1982.

Information Contacts: O. González-Ferrán, Univ. de Chile.

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

Bulletin Reports - Index

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

09/1982 (SEAN 07:09) Two previously unknown recent volcanoes identified




Information is preliminary and subject to change. All times are local (unless otherwise noted)


September 1982 (SEAN 07:09) Citation IconCite this Report

Two previously unknown recent volcanoes identified

In January 1982, geologists from the Universidad de Chile found evidence of recent volcanism at two sites in the Seal Nunataks Group that had not previously been identified as recent volcanic centers. At Dallman (65.02°S, 60.32°W), very fresh-looking basaltic lava had emerged from the central crater and flowed to the NW foot of the volcano. Active fumaroles were observed at the N side of the summit. Abundant basaltic lapilli and ash covered wide areas of the Larsen Ice Shelf in the vicinity of Murdoch Volcano (65.03°S, 60.03°W). Portions of these deposits were covered by fresh snow. Fumaroles were active in a small parasitic cinder cone SE of Murdoch.

In December 1893, C.A. Larsen saw an eruption of black ash from Lindenberg (64.92°S, 59.70°W) and solfataric activity at Christensen (65.10°S, 59.57°W), but no activity was observed at either of these volcanoes in 1982.

Information Contacts: O. González-Ferrán, Univ. de Chile.

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.

Eruptive History

There is data available for 0 confirmed Holocene eruptive periods.

[ 1980 Jun 15 ± 545 days ] Uncertain Eruption

Episode 1 | Eruption Episode Dallman, Murdoch
1980 Jun 15 ± 545 days - Unknown Evidence from Unknown

List of 3 Events for Episode 1 at Dallman, Murdoch

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
   - - - -    - - - - Lava flow Uncertain
   - - - -    - - - - Ash Uncertain

[ 1893 Dec 11 ] Uncertain Eruption

Episode 1 | Eruption Episode Lindenberg Island
1893 Dec 11 - Unknown Evidence from Unknown

List of 2 Events for Episode 1 at Lindenberg Island

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1893 Dec 11    - - - - VEI (Explosivity Index)
Deformation History

There is no Deformation History data available for Seal Nunataks Volcanic Field.

Emission History

There is no Emissions History data available for Seal Nunataks Volcanic Field.

GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

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

External Sites