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Executive Committee Range (view source)
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[[File:ECRange.jpg|thumb|The | [[File:ECRange.jpg|thumb|The McHenry Range with Mt. Sidley highlighted]] | ||
The '''Executive Committee Range''' (76°50′S 126°06′W) is a mountain range consisting of five major volcanoes, which trends north-south for 80 km (50 mi) along the 126th meridian west, in [[Westarctica]]. | The '''McHenry Range''' (originally named the '''Executive Committee Range''') (76°50′S 126°06′W) is a mountain range consisting of five major volcanoes, which trends north-south for 80 km (50 mi) along the 126th meridian west, in [[Westarctica]]. | ||
==Discovery and name== | |||
The range was discovered on 15 December 1940 by the United States Antarctic Service expedition on a reconnaissance flight. It was named for the [[Antarctica|Antarctic]] Service Executive Committee. | The range was discovered on 15 December 1940 by the United States Antarctic Service expedition on a reconnaissance flight. It was named for the [[Antarctica|Antarctic]] Service Executive Committee. | ||
===Renaming=== | |||
On 4 September 2023, the [[Senate of Westarctica]] passed [[Westarctican Ordinance]] WO-2023-003 which renamed the Executive Committee Range to the McHenry Range, in honor of [[Grand Duke Travis]]. | |||
==Mountains of the range== | |||
Individual mountains (e.g. [[Mount Hampton]], [[Mount Waesche]]) are named in honor of members of the committee, except for [[Mount Sidley]], the most imposing mountain in the range, which was discovered and named by [[Richard E. Byrd|Rear Admiral Byrd]] in 1934. The entire range was mapped in detail by USGS from surveys and [[U.S. Navy]] aerial photography, 1958-60. | Individual mountains (e.g. [[Mount Hampton]], [[Mount Waesche]]) are named in honor of members of the committee, except for [[Mount Sidley]], the most imposing mountain in the range, which was discovered and named by [[Richard E. Byrd|Rear Admiral Byrd]] in 1934. The entire range was mapped in detail by USGS from surveys and [[U.S. Navy]] aerial photography, 1958-60. | ||
* [[Mount Sidley]] | * [[Mount Sidley]] | ||
* [[Mount Waesche]] | * [[Mount Waesche]] | ||
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==Recent and ongoing magmatism== | ==Recent and ongoing magmatism== | ||
In November 2013, Lough et al. reported deep long period volcanic earthquakes centered at depths of 30-40 km approximately 55 km S of Mount Sidley that were interpreted as indications of present deep crustal magmatic activity beneath the Executive Committee Range. Ice penetrating radar results reported in this study indicated a sub-ice topographic feature, interpreted as a volcano, above the seismic swarms. The study also reported a mid-icecap (1400 m depth) ash layer about 8,000 years old that was interpreted as probably originating at nearby Mount Waesche. | In November 2013, Lough et al. reported deep long period volcanic earthquakes centered at depths of 30-40 km approximately 55 km S of Mount Sidley that were interpreted as indications of present deep crustal magmatic activity beneath the Executive Committee Range. Ice penetrating radar results reported in this study indicated a sub-ice topographic feature, interpreted as a volcano, above the seismic swarms. The study also reported a mid-icecap (1400 m depth) ash layer about 8,000 years old that was interpreted as probably originating at nearby Mount Waesche. | ||
[[Category:Geography of Westarctica]] | [[Category:Geography of Westarctica]] | ||
[[Category:Mountains]] | [[Category:Mountains]] | ||