Misplaced Pages

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56-702: The Getz Ice Shelf extends along the north shore of Marie Byrd Land , from Hanessian Foreland and McDonald Heights in the west to Cape Herlacher on the Martin Peninsula to the east. The western section lies along the Hobbs Coast , while the section east of Dean Island lies along the full length of the Bakutis Coast. In the west the ice sheet is fed by glaciers that include, from west to east, Johnson Glacier, Venzke Glacier, Berry Glacier and DeVicq Glacier. The ice shelf westward of Siple Island

112-580: A camp was operated at the Ford Ranges (FRD) in western Marie Byrd Land, supporting a part of a United States Antarctic Program (USAP) airborne survey initiated by UCSB and supported by the UTIG flying out of Siple Dome. In 2004–05, a large camp, Thwaites (THW) was established by the USAP 150 km (93 mi) north of NBY, in order to support a large airborne geophysical survey of eastern Marie Byrd Land by

168-468: A contributor to the expedition. 74°24′S 132°47′W  /  74.400°S 132.783°W  / -74.400; -132.783 . A rock point, the site of an Adelie penguin rookery, forming the northwest corner of Shepard Island. Like Grant Island, 5 nautical miles (9.3 km; 5.8 mi) eastward, Shepard Island is surrounded by the Getz Ice Shelf except on the north side. The point

224-488: A series of reference points and benchmarks throughout much of Marie Byrd Land during 1966–1968. USS  Glacier  (AGB-4) explored the parts of the Walgreen Coast and Eights Coast in 1960–61. It had parties of geologists and surveyors along that were deployed to outcrops on land. This expedition to the far eastern reaches of Marie Byrd Land determined that Thurston Peninsula as proposed by earlier expeditions

280-462: A sledge party that visited these isolated outcrops ( nunataks ) in the region bordering the eastern Ross Sea and Ross Ice Shelf. At the same time the first Japanese Antarctic Expedition led by Nobu Shirase landed a shore party on the peninsula. Dean Smith was the pilot during aerial overflights in 1929 with Richard E. Byrd's first Antarctic expedition (1928–1930). It originated from Little America near Amundsen's original base camp Framheim in

336-399: Is a seamount named in association with Marie Byrd Land; name approved June 1988 ( Advisory Committee on Undersea Features , 228). Not comprehensive. Byrd Station was the template for the doomed Antarctic bases in: Shepard Island Shepard Island ( 74°25′S 132°30′W  /  74.417°S 132.500°W  / -74.417; -132.500  ( Shepard Island ) )

392-477: Is an island about 11 nautical miles (20 km; 13 mi) long, lying 6 nautical miles (11 km; 6.9 mi) west of Grant Island off the coast of Marie Byrd Land , Antarctica. The island is ice capped except at its northern, seaward side, and is almost wholly embedded in the Getz Ice Shelf . Download coordinates as: Shepard Island is in the north of the Getz Ice Shelf . Reynolds Strait

448-655: Is an unclaimed region of Antarctica . With an area of 1,610,000 km (620,000 sq mi), it is the largest unclaimed territory on Earth. It was named after the wife of American naval officer Richard E. Byrd , who explored the region in the early 20th century. The territory lies in West Antarctica , east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean portion of

504-638: Is by far the largest single unclaimed territory on Earth , with an area of 1,610,000 km (620,000 sq mi), including Eights Coast , immediately east of Marie Byrd Land. In 1939, United States President Franklin D. Roosevelt instructed members of the United States Antarctic Service Expedition to take steps to claim some of Antarctica as United States territory. Although this appears to have been done by members of this and subsequent expeditions, these do not appear to have been formalized prior to 1959, when

560-493: Is on its north side, separating it from Forrester Island . Grant Island is to the east. It is home to two Adélie penguin rookeries on its north shore. Features, from west to east, include Worley Point, Mount Petinos, Moran Bluff, Mathewson Point and Mount Colburn. Shepard Island was discovered by the United States Antarctic Service (USAS) Expedition (1939–1941) and named for John Shepard Jr.,

616-589: Is smaller. Prominent ranges include the Ford Ranges in western MBL, The Flood Range , the Executive Committee Range, and the Kohler Range . The Ford Ranges are the most extensive and include more than six individual named mountain groups. The Executive Committee Range includes five volcanoes, some proposed to be dormant or active. The Flood Range comprises a linear chain of Neogene and Quaternary age volcanoes. The Fosdick mountains in

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672-680: Is the Russian station Russkaya , which was occupied 1980–1990 and is now closed. East of the Siple Coast off the Ross Ice Shelf, Siple Dome was established as a summer science camp in 1996. Ice cores have been drilled here to retrieve the climate history of the last 100,000 years. This camp also served as a base for airborne geophysical surveys supported by the University of Texas Institute for Geophysics (UTIG). In 1998–1999,

728-771: The Antarctic Treaty System was set up. Some publications in the United States have shown this as a United States territory in the intervening period, and the United States Department of Defense has stated that the United States has a solid basis for a claim in Antarctica resulting from its activities prior to 1959. The portion west of 150°W is part of Ross Dependency claimed by New Zealand . Five coastal areas are distinguished, which are listed from west to east: Marie Byrd Land

784-578: The Antarctic or Southern Ocean , extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast . It stretches between 158°W and 103°24'W. The inclusion of the area between the Rockefeller Plateau and Eights Coast is based upon Byrd's exploration. Because of its remoteness, even by Antarctic standards, most of Marie Byrd Land (the portion east of 150°W) has not been claimed by any sovereign state . It

840-633: The Bindschadler and Whillans ice streams are the most extensive. The seven ice streams discharge 40 percent of the WAIS. Besides the Ross Ice Shelf, significant ice shelves on the coast of the Southern Ocean include the Sulzberger , and Nickerson . Due to the burial of the continental basement of MBL by the WAIS, mountain ranges are exposed towards the coast of MBL where ice thickness

896-538: The Fosdick Mountains in 1934. Aerial exploration discovered lands farther east along the Ruppert Coast . The Third Byrd Antarctic Expedition, also called the United States Antarctic Service Expedition , took place from 1939 to 1941. This expedition established two base camps 2,600 kilometres (1,600 miles) apart. West Base was near the former Little America base (68° 29' S, 163° 57' W) and East Base

952-659: The International Geophysical Year (IGY; from July 1957 to end of 1958) that saw several exploratory overland traverses with tractor trains ( Sno-cats and modified bulldozers ). Starting in January 1957 (pre-IGY) Charles R. Bentley led a traverse from Little America V to the new Byrd station along the route blazed by United States Army engineers a few months before (the Army-Navy Drive ). His team conducted measurements of ice thickness and of

1008-533: The Amundsen Sea. It entails marine, airborne, and on-ice geophysical exploration that will illuminate the character of Marie Byrd Land bedrock geology and the nature of the eastern boundary of the province. The goal is determining the stability of the glacier and prediction of global sea level rise from shrinking of the WAIS. Adjacent to the continent, Marie Byrd Land is bordered by the Amundsen Sea in

1064-755: The Bay of Whales, led to the discovery of the Rockefeller Mountains and the Edsel Ford Ranges farther to the east. Byrd named the region after his wife Marie. A geological party led by L. Gould briefly explored parts of the Rockefeller Mountains. The first deep overland exploration occurred during the second Byrd expedition (1933–1935) when a sledge party led by Paul Siple and Franklin Alton Wade reached as far east as

1120-710: The Earth's magnetic and gravity field. The following summer season (1957–58) he led a second traverse out of Byrd Station that visited volcanoes of the Marie Byrd Land Volcanic Province for the first time. The traverse reached the Sentinel Mountains beyond eastern Marie Byrd Land before returning to Byrd Station. Bentley led a third traverse out of Byrd Station to the Horlick Mountains in 1958–59. These three traverses led to

1176-708: The Fosdick Mountains. The United States Navy mounted several expeditions to Antarctica in the period 1946 to 1959. These expeditions ( Operation Highjump led by R. E. Byrd, Windmill , and Deep Freeze I–IV) included aerial photography using the Trimetrogon system of aerial photographs (TMA; vertical, left, and right oblique images over the same point) over portions of coastal Marie Byrd Land. The U.S. Navy began construction of Byrd Station at 80°S, 120°W with traverses out of Little America V in 1956–57 during Deep Freeze II. These efforts were in advance of

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1232-874: The Getz Ice Shelf and midway between Grant Island and Siple Island. First sighted from a distance of 20 nautical miles (37 km; 23 mi) from the USS Glacier on February 5, 1962. Named for Chief Warrant Officer S.L. Dean, United States Navy, Electrical Officer on the Glacier at the time of discovery. 74°18′S 128°10′W  /  74.300°S 128.167°W  / -74.300; -128.167 . The northwest point of Dean Island. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for Keith W. Birdwell, ET1, United States Navy, Electronics Technician at Byrd Station, 1969. 74°39′S 127°30′W  /  74.650°S 127.500°W  / -74.650; -127.500 . Point at

1288-817: The Getz Ice Shelf. Mapped by USGS from surveys and United States Navy air photos, 1959-66. Named by US-ACAN for Chief Warrant Officer J.M. Cherry, a member of the United States Army Aviation Detachment in Antarctica during United States Navy OpDFrz 1966. 74°17′S 117°00′W  /  74.283°S 117.000°W  / -74.283; -117.000 . An ice-covered island, 9 nautical miles (17 km; 10 mi) long, lying within Getz Ice Shelf just south of Wright Island. Mapped by USGS from surveys and United States Navy air photos, 1959-66. Named by US-ACAN for R. Admiral Ira Nunn, United States Navy, responsible for legal elements of

1344-708: The Getz Ice Shelf. This vicinity was first photographed and rudely charted from aircraft of the United States Antarctic Service in December 1940. The glacier was mapped in detail by USGS from ground surveys and United States Navy air photos, 1959-66. Named by US-ACAN for Commander William H. Berry, United States Navy, Air Operations Officer for Task Force 43 during Deep Freeze operations 1969-72; Operations Officer, 1973. 75°00′S 131°00′W  /  75.000°S 131.000°W  / -75.000; -131.000 . A large glacier that drains

1400-719: The Marie Byrd Land Dome. A digital map of Antarctica includes the geology of Marie Byrd Land. The geologic history of Marie Byrd Land in West Antarctica was summarized in a 2020 publication. Prominent glaciers that drain the WAIS in MBL include the Thwaites, and also the Pine Island Glacier , both of which empty into the Amundsen Sea. Of the seven ice streams that drain into the Ross Ice Shelf,

1456-1094: The Navy's Antarctic support during the IGY. 73°56′S 115°20′W  /  73.933°S 115.333°W  / -73.933; -115.333 . An open triangular-shaped bay in Amundsen Sea, 30 nautical miles (56 km; 35 mi) wide at the broad north entrance and defined by the angle formed by the north part of Wright Island, the front of Getz Ice Shelf, and the northwest side of Murray Foreland, Martin Peninsula. Mapped by USGS from surveys and United States Navy aerial photographs, 1959-67. Named by US-ACAN after Commander Gerald L. Glade, United States Navy, helicopter pilot in USS Atka on United States Navy OpDFrz, 1956-57; Deputy Commander, Naval Support Force, Antarctica, 1975-76. From west to east, coastal features include: 74°45′S 120°00′W  /  74.750°S 120.000°W  / -74.750; -120.000 . That part of

1512-486: The USS Glacier during exploration of this coast in the 1961-62 season. 75°00′S 134°24′W  /  75.000°S 134.400°W  / -75.000; -134.400 . A broad glacier flowing northward between Bowyer Butte and Perry Range into Getz Ice Shelf on the coast of Marie Byrd Land. The glacier was discovered and photographed from aircraft of the United States Antarctic Service in December 1940. It

1568-664: The UTIG. In 2006, a major encampment, WAIS Divide (WSD) was established on the divide between the Ross Sea Embayment and the Amundsen Sea Embayment, in the easternmost portion of Marie Byrd Land, in order to drill a high resolution ice core . Drilling and coring ended in 2014. In 2018, the International Thwaites Glacier Collaboration commenced with a large and ongoing physical presence onshore of

1624-506: The WAIS have been proposed to follow rift valleys , now buried by ice, which formed in the WARS. The WARS contains a volcanic province with volcanoes active from the Eocene epoch to a few thousand years ago. A mantle plume was discovered deep below Marie Byrd Land. Heat from the plume has been proposed responsible for uplift of a significant portion of West Antarctica to form

1680-853: The area between Ames Range and McCuddin Mountains and flows north to enter Getz Ice Shelf to the southeast of Grant Island. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for Lieutenant David C. deVicq, United States Navy, engineering officer in charge of building new Byrd Station, 1960-61. Islands embedded in the ice sheet include, from west to east, Shepard Island , Grant Island , Dean Island, Siple Island , Cherry Island, Carney Island , Nunn Island and Wright Island . Download coordinates as: From west to east, offshore features include: 74°00′S 129°00′W  /  74.000°S 129.000°W  / -74.000; -129.000 . An embayment about 115 nautical miles (213 km; 132 mi) wide along

1736-458: The coast into the Getz Ice Shelf toward the west end of Wright Island. Mapped by USGS from surveys and United States Navy air photos, 1959-66. Named by US-ACAN for Lieutenant Colonel Thomas Scott, United States Army, who assisted with the early establishment of United States Navy OpDFrz finances and liaison during the IGY. 74°28′S 116°35′W  /  74.467°S 116.583°W  / -74.467; -116.583 . An ice-filled inlet in

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1792-466: The coast of Antarctica extending from a point opposite eastern Dean Island, at 74°42′S 127°05′W  /  74.700°S 127.083°W  / -74.700; -127.083  ( Bakutis Coast east end ) , to Cape Herlacher . The coast in this area is bounded by several large ice-covered islands and the very extensive Getz Ice Shelf. This coast was sighted by members of the USAS, 1939-41, and

1848-635: The coastline of Antarctica, lying seaward of the Getz Ice Shelf. Nearly a right angle in plan, its limits are described by Grant, Dean, and Siple Islands, which are partially or wholly embedded in the ice shelf. Discovered in December 1940 by the US AS. Named for Philip Wrigley, Chicago manufacturer who helped support the expedition. 74°30′S 127°35′W  /  74.500°S 127.583°W  / -74.500; -127.583 . An ice-covered island, 20 nautical miles (37 km; 23 mi) long and 10 nautical miles (19 km; 12 mi) wide, lying within

1904-666: The discovery of the Bentley Subglacial Trench or Trough, a deep bedrock chasm between MBL and the Transantarctic Mountains of East Antarctica. During 1958–1960 TMA flights and a traverse out of Byrd Station visited and mapped the Executive Committee Range. TMA were flown in western Marie Byrd Land in 1964 and 1965. Following these efforts the United States Geological Survey (USGS) mounted land surveys to establish

1960-481: The east and the Ross Sea and Ross Ice Shelf in the west. Mountain ranges are prominent along and near the coastline with a few exceptions. Marie Byrd Land is covered by the vast West Antarctic Ice Sheet (WAIS). The WAIS in Marie Byrd Land drains off the continent to the east into the Ross Ice Shelf via seven ice streams . Along the coast of the Southern Ocean and the Amundsen Sea, ice drains via glaciers,

2016-678: The hinterland of Bakutis Coast . Byrd Station was the only major base in the interior of West Antarctica for many years. In 1968, the first ice core to fully penetrate the Antarctic Ice Sheet was drilled here. The year-round station was abandoned in 1972, and after operating for years as a temporary summer encampment, Byrd Surface Camp, Byrd Station was reopened by the United States Antarctic Program (USAP) in 2009–2010 to support operations in northern West Antarctica. On Ruppert Coast of Marie Byrd Land

2072-610: The major one being the Thwaites . West Antarctica and Marie Byrd Land have elevations of up to 1.5 to 2 kilometers on the surface of the WAIS. In contrast, East Antarctica has interior elevations on its ice sheet of over 4 kilometers. The West Antarctic Rift System (WARS ) that evolved over the last hundred million years, includes all or part of Marie Byrd Land. The WARS extends from the Ross Sea continental shelf east into Marie Byrd Land. The ice streams and glaciers that drain

2128-590: The mountain ranges within the northern Ford Ranges of Marie Byrd Land (FORCE expedition; Ford Ranges Crustal Exploration). GANOVEX VII a multinational expedition led by Germany visited Edward VII Peninsula in 1992–93. Colorado College geologists led expeditions to the Ford Ranges in 1998–2001 (Ford Ranges), 2005–2007 and 2011–2013 (Fosdick Mountains). Marie Byrd Land hosted the Operation Deep Freeze base Byrd Station (NBY; originally at 80°S, 120°W, rebuilt at 80°S, 119°W), beginning in 1957, in

2184-489: The north tip of Shepard Island. The point, the site of an Adélie penguin rookery, was charted by personnel of the USS Glacier on February 4, 1962. Named by US-ACAN for Lieutenant (j.g.) David S. Mathewson, United States Navy, then supply officer of the Glacier . 74°25′S 132°33′W  /  74.417°S 132.550°W  / -74.417; -132.550 . A mountain, 520 metres (1,710 ft) high, rising above

2240-586: The northern Ford Ranges are a 30-kilometer-long span of Cretaceous metamorphic rocks. Most other exposed rock in MBL is Paleozoic metamorphosed sedimentary rock and granitoid , and Mesozoic granitoid. Away from the coasts, the WAIS buries individual mountains and ranges that are not named, the exception being major features such as the Bentley Subglacial Trench. Marie Byrd Seamount ( 70°0′S 118°0′W  /  70.000°S 118.000°W  / -70.000; -118.000 )

2296-402: The northwest part of Shepard Island. Mapped from the USS Glacier on February 4, 1962. Named for Lieutenant (j.g.) Frank Petinos, United States Navy, First Lieutenant aboard the Glacier . 74°23′S 132°37′W  /  74.383°S 132.617°W  / -74.383; -132.617 . A steep coastal bluff close west of Mathewson Point on the north side of Shepard Island. The feature

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2352-412: The seaplane for the expedition. Summer temperature and salinity measurements from 1994 to 2010 show the shelf is subject to more changeable oceanic forcing than other Antarctic shelves. Beneath cold surface waters, the thermocline was ~200 m shallower in 2007 than in 2000, indicative of shifting access of deep water to the continental shelf and ice shelf base. The calculated area-average basal melt rates

2408-434: The south end of Dean Island. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for Lawrence M. Cole, BU2, United States Navy, Builder at Byrd Station, 1969. 73°45′S 123°32′W  /  73.750°S 123.533°W  / -73.750; -123.533 . An ice-covered island, 3 nautical miles (5.6 km; 3.5 mi) long, lying between Siple and Carney Islands and just within

2464-605: The southeast end of Getz Ice Shelf. Mapped by USGS from surveys and United States Navy aerial photographs, 1959-67. Named by US-ACAN after Captain Timothy A. Sweeny, (CE) United States Army, officer in charge of the aircraft recovery camp at Dome Charlie (q.v.) on United States Navy OpDFrz, 1976. Working at this remote camp in the 1975-76 season, the salvage team succeeded in recovering two LC-130 aircraft which had been damaged at Dome Charlie on January 15, 1975, and November 4, 1975. Marie Byrd Land Marie Byrd Land ( MBL )

2520-1394: The southeast part of Getz Ice Shelf, bounded to the west by Scott Peninsula and Nunn Island and to the east by Spaulding Peninsula. Named by US-ACAN after Lieutenant Commander Lawrence A. Brennan, United States Navy Reserve, who helped plan and execute the recovery of three damaged LC-130 aircraft from Dome Charlie (q.v.) in East Antarctica, successfully accomplished in the 1975-76 and 1976-77 seasons. 74°26′S 116°00′W  /  74.433°S 116.000°W  / -74.433; -116.000 . A low ice-covered peninsula west of Martin Peninsula, extending 7 nautical miles (13 km; 8.1 mi) into Getz Ice Shelf between Brennan Inlet and Sweeny Inlet. Mapped by USGS from surveys and United States Navy aerial photographs, 1959-67. Named by US-ACAN in 1977 after PRC Richard L. Spauiding, United States Navy, parachute-rescue team leader, Operation Deep Freeze 1977, during which, over South Pole Station, he made his 1,000th career jump. He made over 110 Antarctic jumps in his nine Deep Freeze seasonal deployments through 1977. 74°27′S 115°20′W  /  74.450°S 115.333°W  / -74.450; -115.333 . An ice-filled inlet, 18 nautical miles (33 km; 21 mi) wide, between Spaulding Peninsula and Martin Peninsula on Bakutis Coast. The feature marks

2576-529: The volcanic province during the period 1989–1991. The SPRITE project (South Pacific Rim International Tectonic Expedition) explored regions and surroundings of the Hobbs Coast in 1990–1993. Members of both projects were from the U.S., Britain, and New Zealand. During the Austral summers of 1989–1990 and 1990–1991, a geological party from the University of California, Santa Barbara (UCSB) explored several of

2632-457: Was a complex expedition involving remote helicopter camps and airborne geophysics. Several geological expeditions explored Marie Byrd Land during the period 1978–1993. New Zealand geologists surveyed the Ford Ranges and Edward VII Peninsula in two expeditions, 1978–79 and 1987–88. Exploration of the Marie Byrd Land Volcanic Province began in earnest by U.S. geologists in 1984–85. The WAVE project (West Antarctic Volcano Exploration ) focused on

2688-812: Was between 1.1 and 4.1 m of ice per year, making Getz the largest source of meltwater to the Southern Ocean. In February 2021, it was reported that the fourteen glaciers forming the shelf had all speeded up, and had lost 315 gigatonnes of ice since 1994. The cause of the speed up has been posited as "ocean forcing", a process where relatively warm deep ocean water melts the glaciers from below. From west to east, glaciers include: 74°55′S 134°45′W  /  74.917°S 134.750°W  / -74.917; -134.750 . A glacier flowing north between McDonald Heights and Bowyer Butte to merge with Getz Ice Shelf. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for Roland L. Johnson, Boatswain's Mate, United States Navy, crew member of

2744-665: Was charted from the USS Glacier (Captain Edwin A. McDonald, United States Navy) on February 4, 1962. Name applied by the United States Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Richard J. Worley, United States Navy, Medical Officer at South Pole Station, 1969. 74°25′S 132°43′W  /  74.417°S 132.717°W  / -74.417; -132.717 . A mountain 500 metres (1,600 ft) high located 1 nautical mile (1.9 km; 1.2 mi) east-southeast of Worley Point in

2800-644: Was charted in part from air photos taken by United States Navy OpHjp, 1946-47, both expeditions led by Admiral R.E. Byrd. The USGS completely mapped the coast from'ground surveys and United States Navy air photos, 1959-66. Named by US-ACAN for R. Admiral Fred E. Bakutis, Commander of the United States Naval Support Force, Antarctica, from 1965 to 1967. 74°22′S 117°58′W  /  74.367°S 117.967°W  / -74.367; -117.967 . An ice-covered peninsula, 17 nautical miles (31 km; 20 mi) long, extending from

2856-419: Was discovered by the United States Antarctic Service (USAS) in December 1940. The portion eastward of Siple Island was first delineated from air photos taken by United States Navy Operation Highjump , 1946–47. The entire feature was mapped by the United States Geological Survey (USGS) from U.S. Navy air photos of 1962–65. It was named by the USAS (1939–41) for George F. Getz of Chicago , who helped furnish

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2912-581: Was first explored from the west where it could be accessed from the Ross Sea. The far western coast of Marie Byrd Land was seen from the decks of Robert Falcon Scott 's ship Discovery in 1902. He named the peninsula adjacent to the Ross Sea King Edward VII Land and the scattered outcrops that were within sight, the Alexandra Mountains . In 1911, during Roald Amundsen 's South Pole expedition, Kristian Prestrud led

2968-520: Was in fact an island ( Thurston Island ). In the same season a geological party led by Campbell Craddock explored the Jones Mountains in the adjacent region. The United States Byrd Coastal Survey during 1966–1969, led by F. A. Wade, conducted geologic mapping of the Alexandra and Rockefeller Mountains and the Ford Ranges and produced a series of 1:250,000 geologic maps of the region. This

3024-645: Was mapped in detail by USGS from surveys and United States Navy photographs, 1959-66. Named by US-ACAN for Captain Norman C. Venzke, USCG, Commanding Officer of USCGC Northwind in Antarctica, 1972 and 1973, and a participant in several other Deep Freeze operations as ship's company officer aboard icebreakers. 75°00′S 134°00′W  /  75.000°S 134.000°W  / -75.000; -134.000 . Glacier, about 25 nautical miles (46 km; 29 mi) long and 5 nautical miles (9.3 km; 5.8 mi) wide, draining north between Perry Range and Demas Range into

3080-633: Was near the Antarctic Peninsula on Stonington Island (68° 12' S, 67° 3' W). Exploration flights out of these two bases led to the discovery of most of the Marie Byrd Land Volcanic Province (e.g. Executive Committee Range ) and much of the coastal region including the Walgreen, Hobbs, and Ruppert Coasts. During the expedition trail parties from West Base visited the northern Ford Ranges and south slopes of

3136-417: Was visited by personnel of USS Glacier on February 4, 1962. Name applied by US-ACAN for Gerald F. Moran, CM1, United States Navy, construction mechanic who wintered over at McMurdo Station (1965) and Plateau Station (1968), and worked at Byrd Station , summer season 1969-70. 74°23′S 132°33′W  /  74.383°S 132.550°W  / -74.383; -132.550 . A steep, rocky point at

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