Mount Overlord

Mount Overlord is a very large mountain which is an extinct stratovolcano, situated at the northwest limit of Deception Plateau, 50 miles inland from the Ross Sea and just east of the head of Aviator Glacier in Victoria Land. Its asymmetrical cone is on the edge of a plateau above Aviator Glacier. While most of the cone is ice-covered, Mount Overlord does have a 1.2-mile (0.8 kilometer) diameter caldera. Volcanic rocks from the western slope have been dated to about seven million years, so the volcano is thought to be extinct.

Mount Overlord
Aerial view of Mount Overlord from the southwest
Highest point
Elevation3,395 m (11,138 ft)
Coordinates73°10′S 164°36′E
Geography
Mount Overlord is located in Antarctica
Mount Overlord
Mount Overlord
Geology
Age of rock7,000,000 years
Mountain typeStratovolcano (extinct)
Volcanic beltMcMurdo Volcanic Group
Last eruptionMiocene

It was so named by the northern party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1962–63, because it "overlords" lesser peaks in the area.

Topographic map of Mount Overlord (1:250,000 scale)

See also

Sources

  • LeMasurier, W. E.; Thomson, J. W., eds. (1990). Volcanoes of the Antarctic Plate and Southern Oceans. American Geophysical Union. ISBN 0-87590-172-7.
  • "Skiing the Pacific Ring of Fire and Beyond". Amar Andalkar's Ski Mountaineering and Climbing Site. 2007 [1997]. Retrieved 14 January 2005.

Public Domain This article incorporates public domain material from "Mount Overlord". Geographic Names Information System. United States Geological Survey. 


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