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Poldervaart Edge
Poldervaart Edge () is an east-facing escarpment rising to about 1,300 m and trending NE-SW for 3.5 nautical miles (6 km) in the Du Toit Nunataks, Read Mountains, Shackleton Range. Photographed from the air by the U.S. Navy, 1967, and surveyed by British Antarctic Survey The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic on ... (BAS), 1968–71. In association with the names of geologists grouped in this area, named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1971 after Professor Arie Poldervaart (1919–64), Dutch petrologist known for his research on basaltic rocks. References Escarpments of Antarctica Landforms of Coats Land {{CoatsLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coats Land
Coats Land is a region in Antarctica which lies westward of Queen Maud Land and forms the eastern shore of the Weddell Sea, extending in a general northeast–southwest direction between 20°00′W and 36°00′W. The northeast part was discovered from the ''Scotia'' by William S. Bruce, leader of the Scottish National Antarctic Expedition, 1902-1904. He gave the name Coats Land for James Coats, Jr., and Major Andrew Coats, the two chief supporters of the expedition. Research stations # Belgrano II Base (Argentina) Countries claiming Coats Land The eastern part of Coats Land is claimed by Norway and is part of Queen Maud Land, the central part being claimed by the United Kingdom and is part of the British Antarctic Territory, and the western part is claimed by Argentina and is part of Argentine Antarctica. See also * Caird Coast * Luitpold Coast * Polarstern Canyon Polarstern Canyon () is an undersea canyon named for the German research vessel Polarstern, which to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the lowest measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Du Toit Nunataks
The Du Toit Nunataks () are a group of nunataks between Cornwall Glacier and Glen Glacier, marking the western end of the Read Mountains, Shackleton Range. They were photographed from the air by the U.S. Navy, 1967, and surveyed by the British Antarctic Survey, 1968–71. In association with the names of geologists grouped in this area, they were named by the UK Antarctic Place-Names Committee after Alexander Logie du Toit, a South African geologist. Features Geographical features include: * Hatch Plain Hatch Plain () is a small debris-covered area at about , on the eastern margin of the Du Toit Nunataks, in the Read Mountains of the Shackleton Range, Antarctica. It was photographed from the air by the U.S. Navy in 1967, and surveyed by the Br ... * Poldervaart Edge * Spath Crest * Zittel Cliffs References Nunataks of Coats Land {{CoatsLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Read Mountains
Read Mountains is a group of rocky summits, the highest Holmes Summit 1,875 m, lying east of Glen Glacier in the south-central part of the Shackleton Range. First mapped in 1957 by the Commonwealth Trans-Antarctic Expedition and named for Professor Herbert H. Read, Chairman of the Scientific Committee and member of the Committee of Management of the Commonwealth Trans-Antarctic Expedition, 1955–58. Features Geographical features include: Du Toit Nunataks Other features * Arkell Cirque * Beche Blade * Bowen Cirque * Eskola Cirque * Flett Crags * Glen Glacier * Goldschmidt Cirque * Holmes Summit * Kuno Cirque * Lapworth Cirque * Mantell Screes * Mount Wegener Mount Wegener () is a mountain rising to 1,385 m in central Read Mountains, Shackleton Range. The feature was photographed from the air by the U.S. Navy in 1967 and was surveyed by the British Antarctic Survey (BAS) from 1968 to 1971. It was name ... * Murchison Cirque * Nicol Crags * Niggli Nunataks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shackleton Range
The Shackleton Range is a mountain range in Antarctica. Rising at Holmes Summit to , it extends in an east–west direction for about between the Slessor and Recovery glaciers. The range was named after Sir Ernest Shackleton, leader of the British Imperial Trans-Antarctic Expedition (or "Shackleton's Expedition") of 1914–16. Surveys The Commonwealth Trans-Antarctic Expedition (CTAE), which in 1956 saw the range from the air, conducted a ground-level survey of its western part in 1957. The United States Navy photographed the range from the air in 1967. In 1968–69 and 1969–70, the British Antarctic Survey (based at Halley Station) conducted further ground surveys with support from US Navy C-130 Hercules aircraft. Geology The Haskard Group and Turnpike Bluff Group rest unconformably on the Archean-Middle Proterozoic Shackleton Range Metamorphic Complex. The Ordovician-Early Devonian Blaiklock Glacier Group (475 Ma) also unconformably overlies the Shackleton Range Metam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Antarctic Survey
The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic on behalf of the UK. It is part of the Natural Environment Research Council (NERC). With over 400 staff, BAS takes an active role in Antarctic affairs, operating five research stations, one ship and five aircraft in both polar regions, as well as addressing key global and regional issues. This involves joint research projects with over 40 UK universities and more than 120 national and international collaborations. Having taken shape from activities during World War II, it was known as the Falkland Islands Dependencies Survey until 1962. History Operation Tabarin was a small British expedition in 1943 to establish permanently occupied bases in the Antarctic. It was a joint undertaking by the Admiralty and the Colonial Office. At the end of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom Antarctic Place-Names Committee
The UK Antarctic Place-Names Committee (or UK-APC) is a United Kingdom government committee, part of the Foreign and Commonwealth Office, responsible for recommending names of geographical locations within the British Antarctic Territory (BAT) and the South Georgia and the South Sandwich Islands (SGSSI). Such names are formally approved by the Commissioners of the BAT and SGSSI respectively, and published in the BAT Gazetteer and the SGSSI Gazetteer maintained by the Committee. The BAT names are also published in the international Composite Gazetteer of Antarctica maintained by SCAR. The Committee may also consider proposals for new place names for geographical features in areas of Antarctica outside BAT and SGSSI, which are referred to other Antarctic place-naming authorities, or decided by the Committee itself if situated in the unclaimed sector of Antarctica. Names attributed by the committee * Anvil Crag, named for descriptive features * Anckorn Nunataks, named after J. F. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arie Poldervaart
Arie Poldervaart (6 July 1918, Bandung, Indonesia – 28 October 1964, Manhattan) was a Dutch petrologist and leading expert on igneous and metamorphic rocks. He was a Guggenheim Fellow for the academic year 1959–1960. Biography Arie Poldervaart grew up in Java, which was then part of the Dutch East Indies. In September 1934 he went to the Netherlands to complete his schooling. For the two academic years 1935–1936 and 1936–1937 he studied applied and industrial chemistry at ''Technische Hoogeschool Delft''. In the summer of 1937 he rejoined his parents in Bandung. After a few months in Java working as an apprentice in the Dutch government geological survey, he matriculated in January 1938 at the University of Cape Town to study chemistry and geology. After receiving his M.S. in 1940, he became a doctoral candidate under the supervision of Frederick Walker (1898–1968), F.R.S.E. Starting in 1939, they did field work together on the Karoo dolerites. Poldervaart received his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escarpments Of Antarctica
An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. The terms ''scarp'' and ''scarp face'' are often used interchangeably with ''escarpment''. Some sources differentiate the two terms, with ''escarpment'' referring to the margin between two landforms, and ''scarp'' referring to a cliff or a steep slope. In this usage an escarpment is a ridge which has a gentle slope on one side and a steep scarp on the other side. More loosely, the term ''scarp'' also describes a zone between a coastal lowland and a continental plateau which shows a marked, abrupt change in elevation caused by coastal erosion at the base of the plateau. Formation and description Scarps are generally formed by one of two processes: either by differential erosion of sedimentary rocks, or by movement of the Earth's crust at a geologic fault. The first process is the more common type: the escarpment is a tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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