Mount Overlord

Mount Overlord
Aerial view of Mount Overlord from the southwest
Elevation	3,395 m (11,138 ft)
Location
Location	Victoria Land, Antarctica
Coordinates	73°10′S 164°36′E / 73.167°S 164.6°E / -73.167; 164.6
Geology
Type	Stratovolcano (extinct)
Age of rock	7,000,000 years
Last eruption	Miocene

Mount Overlord (73°10′S 164°36′E / 73.167°S 164.6°E / -73.167; 164.6) 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 assymetrial 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 (.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. 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

• List of volcanoes in Antarctica

Sources

• LeMasurier, W. E.; Thomson, J. W. (eds.) (1990). Volcanoes of the Antarctic Plate and Southern Oceans. American Geophysical Union. p. 512 pp. ISBN 0-87590-172-7. 
• "Amar Andalkar's Ski Mountaineering and Climbing Site. Skiing the Pacific Ring of Fire and Beyond". 1997–2007. http://www.skimountaineer.com/ROF/RingOfFire.html. Retrieved 2005-01-14. 

 This article incorporates public domain material from the United States Geological Survey document "Mount Overlord" (content from the Geographic Names Information System).

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