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35-576: Download coordinates as: The western end of the range is north of the Executive Committee Range . Mount Galla is towards the northeast end. Mount Aldaz and Benes Peak are further to the east. The escarpment was observed by members of the United States Antarctic Service (USAS), 1939–41, and in ensuing scientific reports was referred to as 76th Parallel Escarpment . The approved name is an acronym for

70-747: A 1434-ton wooden ice ship built for the Bureau of Indian Affairs , was supplied by the Department of the Interior. A total of 125 men departed from the United States in the two ships of the United States Antarctic Service Expedition. Most of the men who made up the expedition were solicited from the military ranks, civilian agencies of government and scientific institutions. A few volunteers were employed by

105-572: A U.S.-government sponsored expedition, additional support came from donations and gifts by private citizens, corporations and institutions. Rear Admiral Richard Evelyn Byrd donated many of the supplies that he had gathered for his own expedition, the largest item being the Bear of Oakland , commissioned as the USS Bear (AG-29) on 11 September 1939. A second ship, the USMS North Star ,

140-571: A caldera in southern Mount Sidley. Mapped by USGS on the Executive Committee Range Traverse of 1959. Named by US-ACAN for Perry E. Parks, Jr., exploration geophysicist and assistant seismologist on the Marie Byrd Land Traverse, 1959-60. 77°07′S 126°03′W  /  77.117°S 126.050°W  / -77.117; -126.050 . A subsidiary peak 2,675 metres (8,776 ft) high on

175-868: A circular ice-filled crater occupying much of the summit area. It is the northernmost of the extinct volcanoes which comprise the Executive Committee Range. Discovered by the United States Antarctic Service (USAS) on a flight, December 15, 1940, and named for Ruth Hampton, United States Department of the Interior member of the USAS Executive Committee. Mapped in detail by USGS from surveys and United States Navy trimetrogon photography, 1958-60. 76°26′S 126°03′W  /  76.433°S 126.050°W  / -76.433; -126.050 . A conspicuous peak 3,005 metres (9,859 ft) high rising 3 nautical miles (5.6 km; 3.5 mi) northwest of Mount Hampton, from which it

210-867: A flyover of the area on 15 December 1940, and named for the Executive Committee of the Expedition. Four of the five mountains are named in honor of individual members of the committee. Mount Sidley , the most imposing mountain in the range, was discovered and named by Rear Admiral Richard E. Byrd in 1934. The entire range was mapped in detail by the United States Geological Survey (USGS) from surveys and United States Navy trimetrogon photography from 1958 to 1960. 76°29′S 125°48′W  /  76.483°S 125.800°W  / -76.483; -125.800 . An impressive mountain 3,325 metres (10,909 ft) high with

245-544: A member of the Executive Committee Range Traverse (February 1959) and Marie Byrd Land Traverse (1959-60) that carried out surveys in this area. 77°04′S 126°38′W  /  77.067°S 126.633°W  / -77.067; -126.633 . A snow-covered subsidiary peak 2,920 metres (9,580 ft) high on the northeastern slope of Mount Waesche. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Feng-Keng (Frank) Chang, Traverse Seismologist at Byrd Station, 1959, and

280-557: A member of the Marie Byrd Land Traverse Party that explored this area, 1959-60. United States Antarctic Service Expedition The United States Antarctic Service Expedition (1939–1941) , often referred to as Byrd's Third Antarctic Expedition , was an expedition jointly sponsored by the United States Navy , State Department , Department of the Interior and The Treasury . Although

315-1219: Is a range consisting of five major volcanoes, which trends north-south for 50 nautical miles (93 km; 58 mi) along the 126th meridian west , in Marie Byrd Land , Antarctica. Download coordinates as: The Executive Committee Range is south of the eastern end of the Usas Escarpment . The mountains, from north to south, are Mount Hampton, Mount Camming, Mount Hartigan, Mount Sidley and Mount Waeshche. Named features of Mount Hampton include Whitney Peak and Marks Peak. Named features of Mount Cuming include Annexstad Peak, Le Vaux Peak and Woolam Peak. Named features of Mount Hartigan include Lavris Peak, Boudette Peaks, Tusing Peak and Mintz Peak. Named features of Mount Sidley include Feyerharm Knoll, Weiss Amphitheater, Parks Glacier and Doumani Peak. Named features of Mout Waescher include Bennett Saddle and Chang Peak. 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

350-568: Is almost entirely snow covered, situated along the Usas Escarpment, 4 nautical miles (7.4 km; 4.6 mi) east of Mount Aldaz. Surveyed by USGS on the Executive Committee Range Traverse of 1959. Named by US-ACAN for Norman S. Benes, USARP meteorologist at Byrd Station, 1961. Executive Committee Range The Executive Committee Range ( 76°50′S 126°00′W  /  76.833°S 126.000°W  / -76.833; -126.000  ( Executive Committee Range ) )

385-400: Is remarkable that most of the objectives set for them were met. The expedition also took a M2A2 Light Tank , and a T3E4 Carrier, both of which performed well, but were too heavy for the terrain and were abandoned. The visionary but ill-fated Antarctic Snow Cruiser , a vehicle having several innovative features, was used by the expedition but it generally failed to operate as hoped for under

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420-921: Is separated by a distinctive ice-covered saddle. Mapped by USGS from surveys and United States Navy aerial photographs, 1958-60. Named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Captain Herbert Whitney, United States Navy Reserve, commander of the Navy's Mobile Construction Battalion responsible for the building of Antarctic stations for use during the International Geophysical Year. Whitney wintered over at Little America V in 1956. 76°30′S 125°45′W  /  76.500°S 125.750°W  / -76.500; -125.750 . A rocky peak 3,325 metres (10,909 ft) high on

455-687: Is situated immediately north of Mount Sidley in the Executive Committee Range, Marie Byrd Land. Discovered by the United States Antarctic Service expedition on a flight, December 15, 1940, and named for R. Admiral Charles C. Hartigan, United States Navy, Navy Department member of the Antarctic Service Executive Committee. 76°49′S 125°56′W  /  76.817°S 125.933°W  / -76.817; -125.933 . A snow-capped peak which rises to 2,745 metres (9,006 ft) high in

490-434: Is the highest and most imposing of the five extinct volcanic mountains that comprise the Executive Committee Range. The feature is marked by a spectacular caldera on the southern side and stands northeast of Mount Waesche in the southern part of the range. Discovered by R. Admiral Richard E. Byrd on an airplane flight, November 18, 1934, and named by him for Mabelle E. Sidley, the daughter of William Horlick, manufacturer, who

525-506: The United States Geological Survey (USGS) from surveys and United States Navy air photos, 1959-65. Named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Edward J. Galla, United States Navy, who was medical doctor and leader of support personnel at Byrd Station, 1959. 76°03′S 124°25′W  /  76.050°S 124.417°W  / -76.050; -124.417 . A projecting-type mountain 2,520 metres (8,270 ft) high that barely protrudes from

560-536: The Department of the Interior for $ 10 per month, food and clothing included. A total of 59 men, divided initially into three groups, wintered in Antarctica. The objectives of the expedition were outlined in an order from President Franklin D. Roosevelt dated November 25, 1939. The President wanted two bases to be established: East Base , in the vicinity of Charcot Island or Alexander I Land , or on Marguerite Bay if no accessible site could be found on either of

595-539: 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. The complete range was discovered by the United States Antarctic Service Expedition (1939–41), during

630-531: The USS Bear but also worked as a cook and performed other tasks with the expedition. With international tensions on the rise, it was considered wise to evacuate the two bases rather than relieve the present personnel with new men who would continue to occupy the bases. It was hoped that one day this base would be reoccupied, so much of the equipment and supplies were left behind as the two ships sailed from West Base on February 1, 1941. The evacuation of East Base

665-749: The central portion of Mount Hartigan. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60, Named by US-ACAN for Alien D. Tusing, meteorologist at Byrd Station, 1959. 76°53′S 126°03′W  /  76.883°S 126.050°W  / -76.883; -126.050 . A small peak rising above the southeast corner of Mount Hartigan. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Jerome Mintz, Meteorological Electronics Technician at Byrd Station, 1959. 77°02′S 126°06′W  /  77.033°S 126.100°W  / -77.033; -126.100 . A massive, mainly snow-covered mountain 4,285 metres (14,058 ft) high which

700-437: The crater rim of Mount Gumming. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Alvis E. Woolam, ionospheric physicist at Byrd Station, 1959. 76°52′S 126°00′W  /  76.867°S 126.000°W  / -76.867; -126.000 . A broad, mostly snow-covered mountain with several individually named peaks which rise up to 2,800 metres (9,200 ft). It

735-426: The difficult conditions and was eventually abandoned in Antarctica. It was rediscovered in 1958 but has since been presumed to have been lost due to the breaking off and eventual melting of the ice floe it was on. Aboard the USS Bear was George Washington Gibbs Jr. who became the first African-American to set foot on the continent of Antarctica during the expedition. Gibbs served as a Mess Attendant 1st Class aboard

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770-474: The discovery expedition. Features of the eastern end of the escarpment, from west to east, are 75°56′S 125°52′W  /  75.933°S 125.867°W  / -75.933; -125.867 . Snow-capped mountain 2,520 metres (8,270 ft) high which rises above the Usas Escarpment, 31 nautical miles (57 km; 36 mi) east of Mount Petras in the McCuddin Mountains . Mapped by

805-418: The east side of the crater rim of Mount Cumming. Mapped by USGS from surveys and United States Navy aerial photographs, 1958-60. Named by US-ACAN for Howard A. Le Vaux, auroral physicist at Byrd Station, 1959, and a member of the Marie Byrd Land Traverse Party, 1959-60. 76°41′S 125°49′W  /  76.683°S 125.817°W  / -76.683; -125.817 . A small peak on the southern part of

840-519: The ice-covered Usas Escarpment, 22 nautical miles (41 km; 25 mi) east-southeast of Mount Galla. The mountain is mostly ice covered, but has notable rock outcropping along its northern spur. Surveyed by USGS on the Executive Committee Range Traverse of 1959. Named by US-ACAN for Luis Aldaz, Meteorologist and Scientific Leader at Byrd Station, 1960. 76°02′S 124°07′W  /  76.033°S 124.117°W  / -76.033; -124.117 . A peak 2,450 metres (8,040 ft) high that

875-493: The northeast portion of Mount Hartigan. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for William C. Lavris, Meteorological Technician at Byrd Station, 1959. 76°50′S 126°02′W  /  76.833°S 126.033°W  / -76.833; -126.033 . Twin peaks 2,810 metres (9,220 ft) high and 2,815 metres (9,236 ft) high located 1 nautical mile (1.9 km; 1.2 mi) west-southwest of Lavris Peak in

910-414: The northern portion of Mount Hartigan. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Eugene L. Boudette, Geologist, USGS, a member of the Marie Byrd Land Traverse Party, 1959-60. 76°51′S 126°00′W  /  76.850°S 126.000°W  / -76.850; -126.000 . A snow-capped peak 2,650 metres (8,690 ft) high rising from

945-547: The south side of the crater rim of Mount Hampton. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Keith E. Marks, electronics engineer, National Bureau of Standards, a member of the Marie Byrd Land Traverse Party, 1959-60. 76°40′S 125°48′W  /  76.667°S 125.800°W  / -76.667; -125.800 . A low, mostly snow-covered mountain, volcanic in origin, located midway between Mount Hampton and Mount Hartigan. A circular snow-covered crater occupies

980-602: The southern end of the Executive Committee Range. The feature is snow covered except for rock exposures on the south and southwest slopes. Discovered by the United States Antarctic Service expedition on a flight, December 15, 1940. Named for V. Admiral Russell R. Waesche, United States Coast Guard, member of the Antarctic Service Executive Committee. 77°05′S 126°26′W  /  77.083°S 126.433°W  / -77.083; -126.433 . The deep snow saddle between Mount Waesche and Mount Sidley. Named by US-ACAN for Gerard A. Bennett, Traverse Specialist at Byrd Station,

1015-408: The southern side, occupying the south-central part of Mount Sidley. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for Bernard D. Weiss, Meteorologist-in-Charge at Byrd Station, 1959. 77°07′S 125°55′W  /  77.117°S 125.917°W  / -77.117; -125.917 . A glacier draining southeastward from Weiss Amphitheater,

1050-514: The southern slopes of Mount Sidley. Named by US-ACAN for George A. Doumani, Traverse Seismologist at Byrd Station, a member of the Executive Committee Range Traverse (February 1959) and Marie Byrd Land Traverse (1959-60) that carried out surveys of this area. 77°10′S 126°54′W  /  77.167°S 126.900°W  / -77.167; -126.900 . A large and prominent mountain 3,290 metres (10,790 ft) high of volcanic origin, standing immediately southwest of Mount Sidley and marking

1085-521: The specified islands; and West Base, in the vicinity of King Edward VII Land , but if this proved impossible, a site on the Bay of Whales at or near Little America was to be investigated, and delineation of the continental coast line between the meridians 72 degrees W., and 148 degrees W. In view of the broad scope of the objectives and the unpredictable circumstances that always arise in Antarctica , it

Usas Escarpment - Misplaced Pages Continue

1120-484: The summit area. Discovered by the USAS (1939-41) on a flight, December 15, 1940, and named for Hugh S. Cumming, Jr., State Department member of the USAS Executive Committee. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. 76°41′S 125°52′W  /  76.683°S 125.867°W  / -76.683; -125.867 . A partially ice-free peak 2,610 metres (8,560 ft) high on

1155-518: The west side of the crater rim of Mount Cumming. Mapped by USGS from surveys and United States Navy trimetrogon photography, 1958-60. Named by US-ACAN for John O. Annexstad, geomagnetician and station seismologist at Byrd Station, 1958; later with the Meteorite Working Group, Johnson Space Center, Houston, Texas. 76°40′S 125°43′W  /  76.667°S 125.717°W  / -76.667; -125.717 . A small peak on

1190-675: Was a contributor to the Byrd Antarctic Expedition, 1933-35. 77°00′S 125°46′W  /  77.000°S 125.767°W  / -77.000; -125.767 . An ice-covered knoll on the lower northeastern slope of Mount Sidley. Surveyed by USGS during the Executive Committee Range Traverse of 1959. Named by US-ACAN for William R. Feyerharm, Meteorologist at Byrd Station, 1960. 77°04′S 126°06′W  /  77.067°S 126.100°W  / -77.067; -126.100 . An amphitheater-like caldera, 2 nautical miles (3.7 km; 2.3 mi) wide and breached at

1225-715: Was concluded on March 22 and both ships sailed immediately. The USMS North Star arrived in Boston on May 5 and the USS Bear on May 18. On September 24, 1945, Congress directed (Public Law 79-185, 59 Stat. 536) that such number of gold, silver, and bronze medals —at the discretion of the Secretary of the Navy—;be presented to members of the United States Antarctic Expedition of 1939-1941, in recognition of their valuable services to

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