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Allan Hills
The Allan Hills are a group of hills at the end of the Transantarctic Mountains System, located in Oates Land and Victoria Land regions of Antarctica. They are mainly ice free and about long, lying just north-west of the Coombs Hills near the heads of Mawson Glacier and Mackay Glacier. They were mapped by the New Zealand party (1957–58) of the Commonwealth Trans-Antarctic Expedition and named for Professor R. S. Allan of the University of Canterbury, New Zealand. Allan Hills is referred to as the ''Allan Nunatak'', and mapped north of Carapace Nunatak, in the memoirs of the Scott Base Leader Adrian Hayter. Both names are in the USGS listing. Meteorites According to William A. Cassidy, describing the 1976–1977 ANSMET meteorite collecting season, "Looking across the Mackay Glacier at the great sky-blue patches of ice beyond Mount Brooke, we were looking for the first time at ice that had a tremendous upstream collecting area. We were looking at Meteorite Heaven... Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transantarctic Mountains
The Transantarctic Mountains (abbreviated TAM) comprise a mountain range of uplifted (primarily sedimentary rock, sedimentary) rock in Antarctica which extend, with some interruptions, across the continent from Cape Adare in northern Victoria Land to Coats Land. These mountains divide East Antarctica and West Antarctica. They include a number of separately named mountain groups, which are often again subdivided into smaller ranges. The range was first sighted by James Clark Ross in 1841 at what was later named the Ross Ice Shelf in his honour. It was first crossed during the British National Antarctic Expedition of 1901-1904. Geography The mountain range stretches between the Ross Sea and the Weddell Sea, the entire width of Antarctica, hence the name. With a total length of about , the Transantarctic Mountains are one of the longest mountain ranges on Earth. The Antarctandes are even longer, having in common with the Transantarctic Mountains the ranges from Cape Adare to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allan Hills 77005
Allan Hills 77005 (also known as Allan Hills A77005, ALHA77005, ALH77005 and ALH-77005) is a Martian meteorite that was found in the Allan Hills of Antarctica in 1977 by a Japanese National Institute of Polar Research mission team and ANSMET. Like other members of the group of SNCs (shergottite, nakhlite, chassignite), ALH-77005 is thought to be from Mars. Description On discovery, the mass of ALH-77005 was . Initial geological examination determined that the meteorite was composed of ~55% olivine, ~35% pyroxene, ~8% maskelynite and ~2% opaques. In March 2019, researchers reported the possibility of biosignatures in this Martian meteorite based on its microtexture and morphology as detected with optical microscopy and FTIR-ATR microscopy, and on the detection of mineralized organic compounds, suggesting that microbial life could have existed on the planet Mars. More broadly, and as a result of their studies, the researchers suggest Solar System materials should be carefully ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toltec Butte
Toltec Butte () is a truncated peak east of Harris Valley in the Shipton Ridge of the Allan Hills The Allan Hills are a group of hills at the end of the Transantarctic Mountains System, located in Oates Land and Victoria Land regions of Antarctica. They are mainly ice free and about long, lying just north-west of the Coombs Hills near th ..., Oates Land. Reconnoitered by the New Zealand Antarctic Research Program (NZARP) Allan Hills Expedition (1964) who named the feature for its resemblance to buildings of the civilization of the same name. Buttes of Antarctica Landforms of Oates Land {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roscolyn Tor
Roscolyn Tor () is a high sandstone feature about 1 nautical mile (1.9 km) southwest of Warren Peak in the Allan Hills of Victoria Land. Reconnoitered by the New Zealand Antarctic Research Program (NZARP) Allan Hills Expedition (1964) who gave the name after a similar feature at Rhoscolyn in Anglesey Anglesey (; cy, (Ynys) Môn ) is an island off the north-west coast of Wales. It forms a principal area known as the Isle of Anglesey, that includes Holy Island across the narrow Cymyran Strait and some islets and skerries. Anglesey island ..., Wales. Rock formations of Oates Land {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halle Flat
Halle Flat () is a relatively flat area just southward of Coxcomb Peak in the Allan Hills of Victoria Land, Antarctica. It was reconnoitered by the New Zealand Antarctic Research Program Allan Hills Expedition, 1964. They gave the name after Thore G. Halle whose pioneering work in 1913 on Antarctic fossil plants forms part of the scientific reports on Otto Nordenskiöld's Swedish Antarctic Expedition The Swedish Antarctic Expedition of 1901–1903 was a scientific expedition led by Otto Nordenskjöld and Carl Anton Larsen. It was the first Swedish endeavour to Antarctica in the Heroic Age of Antarctic Exploration. Background Otto Nordensk ... of 1901–04. References Plains of Antarctica Landforms of Oates Land {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by soil and vegetation and cannot be seen or examined closely. However, in places where the overlying cover is removed through erosion or tectonic uplift, the rock may be exposed, or ''crop out''. Such exposure will happen most frequently in areas where erosion is rapid and exceeds the weathering rate such as on steep hillsides, mountain ridges and tops, river banks, and tectonically active areas. In Finland, glacial erosion during the last glacial maximum (ca. 11000 BC), followed by scouring by sea waves, followed by isostatic uplift has produced many smooth coastal and littoral outcrops. Bedrock and superficial deposits may also be exposed at the Earth's surface due to human excavations such as quarrying and build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mawson Formation
The Mawson Formation is a geological formation in Antarctica, dating to roughly between 182 and 177 million years ago and covering the Toarcian stages of the Jurassic Period in the Mesozoic Era. Vertebrate remains are known from the formation. The ''Mawson Formation'' is the South Victoria Land equivalent of the Karoo Large Igneous Province in South Africa (including the upper Clarens Formation desertic interbeds), as well the Lonco Trapial Formation and the Cañadón Asfalto Formation of Argentina. Geology The thin lacustrine interbeds of the Mawson Formation have received several names in literature, being known as either Carapace Sandstone or Carapace Formation, being a series of Freshwater environments developed during times when the Kirkpatrick Basalt stopped invading the zone. The lava flow deposits of the Kirkpatrick Basalt belong to the Ferrar Large Igneous Province, developed in a linear belt along the Transantarctic Mountains, from the Weddell Sea region to North V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shipton Ridge
Shipton Ridge () is the main ridge forming the northeastern arm of the Allan Hills in Victoria Land. Reconnoitered by the New Zealand Antarctic Research Program (NZARP) Allan Hills Expedition, 1964. They named it after Eric Shipton Eric Earle Shipton, CBE (1 August 1907 – 28 March 1977), was an English Himalayan mountaineer. Early years Shipton was born in Ceylon (now Sri Lanka) in 1907 where his father, a tea planter, died before he was three years old. When he was eigh ..., Himalayan mountaineer, because of his association with Professor N.E. Odell, for whom the adjacent Odell Glacier is named. Ridges of Victoria Land Scott Coast {{ScottCoast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tilman Ridge
Tilman Ridge () is a ridge forming the northwestern arm of the Allan Hills, in Oates Land. Its northernmost point is called Stopes Point. The ridge and its constituent features were first reconnoitered and named by the New Zealand Antarctic Research Program (NZARP) Allan Hills Expedition of 1964. The ridge itself is named for W. H. Tilman, a mountaineering associate of Eric Shipton and N. E. Odell, after whom nearby Shipton Ridge and Odell Glacier are named. The point is named for Marie Stopes, authority on Carboniferous palaeobotany. Townrow Peak is a prominent outlier of the Tilman Ridge, named after paleobotanist J. A. Townrow of the University of Tasmania. Ship Cone is a conical peak, south of Townrow Peak. It is named after a similarly shaped peak in the Hokonui Hills, New Zealand. Gadarene Ridge Gadarene Ridge () is a ridge extending southward from Ship Cone in the Allan Hills of Victoria Land, Antarctica. It was reconnoitered by the New Zealand Antarctic Research P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Watters
Mount Watters () is a massive peak westward of Scythian Nunatak in the Allan Hills, Victoria Land Victoria Land is a region in eastern Antarctica which fronts the western side of the Ross Sea and the Ross Ice Shelf, extending southward from about 70°30'S to 78°00'S, and westward from the Ross Sea to the edge of the Antarctic Plateau. It .... Reconnoitered by the New Zealand Antarctic Research Program (NZARP) Allan Hills Expedition (1964) and named after W.A. Watters, a geologist with the expedition. Mountains of Oates Land {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feistmantel Valley
Feistmantel Valley () is a fossiliferous valley lying south of Shimmering Icefield and west of Mount Watters in the Allan Hills, Oates Land, Antarctica. It was reconnoitered by the New Zealand Antarctic Research Program Allan Hills Expedition (1964), who named it after Professor Otokar Feistmantel, who made pioneering studies of Gondwana Gondwana () was a large landmass, often referred to as a supercontinent, that formed during the late Neoproterozoic (about 550 million years ago) and began to break up during the Jurassic period (about 180 million years ago). The final stages ... flora. References Valleys of Oates Land {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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