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Belemnite Valley
Belemnite Valley () is a valley in Antarctica, northwest of Fossil Bluff Base and bounded to the north by Eros Glacier. It is mostly snow and ice free with a central meltwater stream. It has been referred to as "Hollow Valley" in scientific reports in the early 1960s, and is sometimes referred to today as "Happy Valley". The name "Belemnite Valley" was proposed due to the preponderance of Belemnite Belemnitida (or the belemnite) is an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous. Unlike squid, belemnites had an internal skeleton that made up the cone. The parts are, from the arms-most to ...s found in the exposed rock in the valley. References Valleys of Antarctica Valleys of Alexander Island {{AlexanderIsland-geo-stub ... [...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] |
Fossil Bluff Base
Fossil Bluff is a seasonal British aircraft refuelling station located on the east coast of Alexander Island in Antarctica. In operation since 1961, its facilities provide fuel, storage, and ancillary support for British exploration and operations during the summer season, October through March. The site is adjacent to a natural, north–south travelling route along the George VI Ice Shelf. Fossil Bluff is a collection of buildings and facilities, at the centre of which lies Fossil Bluff Station. Geography Fossil Bluff hut sits at the foot of a scree-covered ridge overlooking George VI Sound which separates mountainous Alexander Island from Palmer Land. George VI Ice Shelf occupies the sound and provides a north–south route for travelling parties except in high summer when the ice shelf's surface is flooded with meltwater. To the west and north-west lie Planet Heights, an extensive range of mountains rising to over . Immediately to the west lies Giza Peak and the snow-free P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eros Glacier
Eros Glacier () is a glacier on the east coast of Alexander Island, Antarctica, long and wide at its mouth, flowing southeast from the Planet Heights into George VI Sound immediately north of Fossil Bluff. It was probably first seen on November 23, 1935, by Lincoln Ellsworth, who flew directly over the glacier and obtained photos of features north and south of it. The mouth of the glacier was observed and positioned by the British Graham Land Expedition in 1936 and the Falkland Islands Dependencies Survey (FIDS) in 1948 and 1949. The glacier was mapped in detail from air photos taken by the Ronne Antarctic Research Expedition, 1947–48, by D. Searle of the FIDS in 1960. It was named by the UK Antarctic Place-Names Committee after the minor planet Eros in association with nearby Pluto Glacier and Uranus Glacier. See also * List of glaciers in the Antarctic * Gilbert Glacier * Jupiter Glacier * Reuning Glacier Further reading * Salvatore, Maria Cristina. (2001), Geomorpho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belemnite
Belemnitida (or the belemnite) is an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous. Unlike squid, belemnites had an internal skeleton that made up the cone. The parts are, from the arms-most to the tip: the tongue-shaped pro-ostracum, the conical phragmocone, and the pointy guard. The calcitic guard is the most common belemnite remain. Belemnites, in life, are thought to have had 10 hooked arms and a pair of fins on the guard. The chitinous hooks were usually no bigger than , though a belemnite could have had between 100 and 800 hooks in total, using them to stab and hold onto prey. Belemnites were an important food source for many Mesozoic marine creatures, both the adults and the planktonic juveniles, and likely played an important role in restructuring marine ecosystems after the Triassic–Jurassic extinction event. They may have laid between 100 and 1,000 eggs. Some species may have been adapted to speed and swam in the tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valleys Of Antarctica
A valley is an elongated low area often running between hills or mountains, which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountains or polar areas. At lower latitudes and altitudes, these glacially formed valleys may have been created or enlarged during ice ages but now are ice-free and occupied by streams or rivers. In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage now taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valleys are described by geographers, using terms that may be global in use or else applied only locally. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
