Mount Sidley is the highest dormant volcano in Antarctica, a member of the Volcanic Seven Summits, with a summit elevation of 4,181–4,285 metres (13,717–14,058 ft).[1][2] It is a massive, mainly snow-covered shield volcano, which is the highest of the five volcanic mountains that comprise the Executive Committee Range of Marie Byrd Land. The feature is marked by a 5 km wide caldera[3] on the southern side and stands NE of Mount Waesche in the southern part of the range.
The mountain was discovered by Rear Admiral Richard E. Byrd on an airplane flight, on November 18, 1934, and named by him for Mabelle E. Sidley, the daughter of William Horlick who was a contributor to the 1933–1935 Byrd Antarctic Expedition.[4]
Despite its height, the volcano's extremely remote location means that it is little known even in the mountaineering world compared to the much more accessible Mount Erebus, the second highest Antarctic volcano which is located near the U.S. and New Zealand bases on Ross Island.
The first recorded ascent of Mount Sidley was by New Zealander Bill Atkinson on January 11, 1990, whilst working in support of a United States Antarctic Program scientific field party.[5]
Topographic map of Mounts Sidley and Waesche (1:250,000 scale)Landsat 8 image of Mount Sidley and the Executive Committee Range
^ abcd"Antarctica Ultra-Prominent Summits". peaklist.org. Archived from the original on 2018-09-08. Retrieved 2013-12-24.
^ ab. The map above showed the elevation as 4,181 m (13,717 ft).
^Panter, Kurt S.; Kyle, Philip R.; Smellie, John L. (September 1997). "Petrogenesis of a Phonolite-Trachyte Succession at Mount Sidley, Marie Byrd Land, Antarctica". Journal of Petrology. 38 (9): 1225–1253. doi:10.1093/petroj/38.9.1225. ISSN 0022-3530.
^"Mount Sidley". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2013-12-24.
^Gildea, Damien (2015). Mountaineering in Antarctica: complete guide: Travel guide. Primento. ISBN 9782511031346.
MountSidley is the highest dormant volcano in Antarctica, a member of the Volcanic Seven Summits, with a summit elevation of 4,181–4,285 metres (13,717–14...
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McIntosh, W.C.; Smellie, J.L. (1 November 1994). "Volcanic history of MountSidley, a major alkaline volcano in Marie Byrd Land, Antarctica". Bulletin of...
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highest volcano in Antarctica, becoming the first Australian to ascend MountSidley. In 2018, he set another world record for the highest altitude kayaking...
Siddhanta from India. He completed the feat on 15 Jan 2019 after summitting Mt Sidley, Antarctica at the age of 35 years 261 days breaking the record of Daniel...
of Chicago Law School in 1967. During the 1980s, she was employed by the Sidley & Austin law firm. From 1991 to 2013, Dohrn was a Clinical Associate Professor...
2:09 am on 6 December 2018) Mt Sidley (Antarctica) on 15 January 2019, 10:10 pm Chile time, 2019 23 September 2014: Mount Blanc in France 28 December 2017:...
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