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Arenite Ridge
Arenite Ridge () is a steep-sided rock and snow ridge in northern Alexander Island, extending in a north–south direction lying immediately west of the Douglas Range and forming the eastern wall of Toynbee Glacier. The ridge includes Mount Tyrrell (which has two summits) and Mount Tilley. It was named by the UK Antarctic Place-Names Committee in 1977 from the sandstone-type rocks (arenite Arenite (Latin: ''arena'', "sand") is a sedimentary clastic rock with sand grain size between 0.0625 mm (0.00246 in) and 2 mm (0.08 in) and contain less than 15% matrix. The related adjective is ''arenaceous''. The equivalent ...) that form this feature. References Ridges of Alexander Island {{AlexanderIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Island
Alexander Island, which is also known as Alexander I Island, Alexander I Land, Alexander Land, Alexander I Archipelago, and Zemlja Alexandra I, is the largest island of Antarctica. It lies in the Bellingshausen Sea west of Palmer Land, Antarctic Peninsula from which it is separated by Marguerite Bay and George VI Sound. The George VI Ice Shelf entirely fills George VI Sound and connects Alexander Island to Palmer Land. The island partly surrounds Wilkins Sound, which lies to its west.Stewart, J. (2011) ''Antarctic An Encyclopedia'' McFarland & Company Inc, New York. 1776 pp. . Alexander Island is about long in a north–south direction, wide in the north, and wide in the south. Alexander Island is the second-largest uninhabited island in the world, after Devon Island. History Alexander Island was discovered on January 28, 1821, by a Russian expedition under Fabian Gottlieb von Bellingshausen, who named it Alexander I Land for the reigning Tsar Alexander I of Russia. Wha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Range
The Douglas Range () is a sharp-crested range, with peaks rising to 3,000 metres, extending 120 km (75 mi) in a northwest–southeast direction from Mount Nicholas to Mount Edred and forming a steep east escarpment of Alexander Island within the British Antarctic Territory, overlooking the north part of George VI Sound. Geography History Mount Nicholas was seen in 1909 from a distance by the French Antarctic Expedition under Charcot. The full extent of the range was observed by Lincoln Ellsworth on his trans-Antarctic flight of November 23, 1935, and its east escarpment first roughly mapped from air photos taken on that flight by W.L.G. Joerg. The east face of the range was roughly surveyed from George VI Sound by the British Graham Land Expedition (BGLE) in 1936 and resurveyed by the Falkland Islands Dependencies Survey (FIDS) in 1948–50. The entire range, including the west slopes, was mapped in detail from air photos taken by the Ronne Antarctic Research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toynbee Glacier
Toynbee Glacier () is a glacier situated in the northeast portion of Alexander Island, Antarctica, extending 17 nautical miles (31 km) long and 5 nautical miles (9 km) wide, lying between Mount Huckle, Mount Spivey and Mount Stephenson of the northern portion of the Douglas Range on the west and Mount Tyrrell and Mount Tilley on the east. It flows north from the east face of Mount Stephenson into the George VI Ice Shelf that occupies George VI Sound. The glacier was first photographed from the air in 1937 by the British Graham Land Expedition under Rymill. Surveyed in 1948 by the Falkland Islands Dependencies Survey and named for Patrick A. Toynbee, FIDS air pilot at Stonington Island in 1948 and 1949. Further reading * Defense Mapping Agency 1992, Sailing Directions (planning Guide) and (enroute) for Antarctica', P 377 * Jane G. Ferrigno, Alison J. Cook, Amy M. Mathie, Richard S. Williams, Jr., Charles Swithinbank, Kevin M. Foley, Adrian J. Fox, Janet W. Thomson, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Tyrrell
Mount Tyrrell () is an irregular mountain with two summits, the highest rising to a maximum height of , standing 3 nautical miles (6 km) inland from the east coast of Alexander Island, Antarctica, situated on the east side and near the mouth of Toynbee Glacier. The mountain was first photographed from the air in 1937 by the British Graham Land Expedition under Rymill. The mountain was surveyed in 1948 by the Falkland Islands Dependencies Survey and was named by them for George Walter Tyrrell, British geologist at the University of Glasgow, Scotland. See also * Mount Bayonne Mount Bayonne () is a mountain, 1,500 m, forming the north extremity of the Rouen Mountains in Alexander Island, Antarctica. The mountain lies immediately north of Les Dents and Mount Paris. First mapped by the French Antarctic Expedition, 1908â ... * Mount Ethelred * Mount McArthur References * Mountains of Alexander Island {{AlexanderIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Tilley
Mount Tilley () is a flat-topped, ice-capped mountain, rising to about 1,900 m, lying about 7 nautical miles (13 km) south of Mount Tyrrell and 3 nautical miles (6 km) inland from George VI Sound in the east part of Alexander Island, Antarctica. Despite its height, it is best described as a foothill of the Douglas Range, from which it is separated by Toynbee Glacier. The mountain was first photographed from the air in 1936 by the British Graham Land Expedition. Surveyed in 1948 by the Falkland Islands Dependencies Survey and named by them for Cecil E. Tilley, professor of mineralogy and petrology at Cambridge University. See also * Mount Huckle * Mount Nicholas * Mount Ethelred Mount Ethelred () is a mainly ice-covered mountain, high, southeast of Mount Ethelwulf and inland from George VI Sound, in the Douglas Range of Alexander Island, Antarctica. The mountain was probably first observed by Lincoln Ellsworth, who ... Mountains of Alexander Island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UK 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 Scientific Committee on Antarctic Research, 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 featu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arenite
Arenite (Latin: ''arena'', "sand") is a sedimentary clastic rock with sand grain size between 0.0625 mm (0.00246 in) and 2 mm (0.08 in) and contain less than 15% matrix. The related adjective is ''arenaceous''. The equivalent Greek-derived term is psammite, though this is more commonly used for metamorphosed sediments. Since it refers to grain size rather than chemical composition, the term is used for example in the classification of clastic carbonatic limestones, as the granulometrically equivalent term sandstone is not appropriate for limestone. Other arenites include sandstones, arkoses, greensands, and greywackes. Arenites mainly form by erosion of other rocks or turbiditic re-deposition of sands. Some arenites contain a varying amount of carbonatic components and thus belong to the rock-category of carbonatic sandstones or silicatic limestones. Arenites often appear as massive or bedded medium-grained rocks with a middling- to wide-spaced preferred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
