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Southeast Indian Ridge
The Southeast Indian Ridge (SEIR) is a mid-ocean ridge in the southern Indian Ocean. A divergent tectonic plate boundary stretching almost between the Rodrigues Triple Junction () in the Indian Ocean and the Macquarie Triple Junction () in the Pacific Ocean, the SEIR forms the plate boundary between the Australian and Antarctic plates since the Oligocene ( anomaly 13). The SEIR is the spreading centre closest to the Kerguelen and Amsterdam– Saint-Paul hotspot. The SEIR has an intermediate full spreading rate of 65 mm/yr, and, because Antarctica is virtually stationary, this results in a northward ridge migration of half that rate. Spreading rates along the SEIR varies from 69 mm/yr near 88°E to 75 mm/yr near 120°E. Geology Amsterdam−St. Paul hotspot During the past 1 Ma the Amsterdam–St. Paul hotspot (ASP) has produced a 150×200 km plateau straddling on the SEIR. The ASP Plateau covers and area of 30,000 km2 and rises 500 m abov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seir , an indigenous group of the Mexican state of Sonora
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Seir or SEIR may refer to: *Mount Seir, a mountainous region stretching between the Dead Sea and the Gulf of Aqaba *Seir the Horite, chief of the Horites, a people mentioned in the Torah *Sa'ir, also Seir, a Palestinian town in the Hebron Governorate in the West Bank *Seir, a demon in the ''Ars Goetia'' *Southeast Indian Ridge (SEIR), is a mid-ocean ridge in the southern Indian Ocean *SEIR model, a compartmental model in epidemiology *Single-engine instrument rating, an aircraft pilot qualification See also * Sear (other) *Sere (other) *Osiris, an Egyptian god *Sah (god), in Egyptian mythology the deification of the constellation Orion *Seri people The Seri or ''Comcaac'' are an indigenous group of the Mexican state of Sonora. The majority reside on the Seri communal property ( es, ejido), in the towns of Punta Chueca ( sei, Socaaix) and El Desemboque ( sei, Haxöl Iihom, link=no) on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balleny Hotspot
The Balleny hotspot is a volcanic hotspot located in the Southern Ocean. The hotspot created the Balleny Islands, which forms a chain that extends for about in a northwest-southeast direction. Due to plate tectonics the hot spot was under different parts of the ocean bed in the past, and this has resulted in a chain of seamounts extending from the East Tasman Plateau. Isotopes and trace elements in the volcanic rocks indicated a high U/Pb mantle source. The same pattern is seen in basalt from Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ..., but not from Victoria. References Hotspots of the Southern Ocean Geography of the Balleny Islands {{marine-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria (Australia)
Victoria is a state in southeastern Australia. It is the second-smallest state with a land area of , the second most populated state (after New South Wales) with a population of over 6.5 million, and the most densely populated state in Australia (28 per km2). Victoria is bordered by New South Wales to the north and South Australia to the west, and is bounded by the Bass Strait to the south (with the exception of a small land border with Tasmania located along Boundary Islet), the Great Australian Bight portion of the Southern Ocean to the southwest, and the Tasman Sea (a marginal sea of the South Pacific Ocean) to the southeast. The state encompasses a range of climates and geographical features from its temperate coastal and central regions to the Victorian Alps in the northeast and the semi-arid north-west. The majority of the Victorian population is concentrated in the central-south area surrounding Port Phillip Bay, and in particular within the metropolit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Tasmania , established_title2 = Federation , established_date2 = 1 January 1901 , named_for = Abel Tasman , demonym = , capital = Hobart , largest_city = capital , coordinates = , admin_center = 29 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terre Adelie
"Terre" (meaning "Earth") is a song by Canadian singer Celine Dion, recorded for her 1998 French-language album, ''S'il suffisait d'aimer''. It was written by French songwriter and producer Erick Benzi, and produced by Jean-Jacques Goldman and Benzi. Although not released as a single, "Terre" entered the Quebec airplay chart in October 1998 and peaked at number eight. Commercial performance After the release of ''S'il suffisait d'aimer'', radio stations in Quebec started playing "Terre". Although not released as a single, it entered the Quebec chart on 17 October 1998 and peaked at number eight. It spent fourteen weeks on the chart in total. Charts Live performances Dion performed "Terre" on selected dates on her "Let's talk about love World Tour", her " Sans Attendre Tour" and during some first shows in the "Courage World Tour The Courage World Tour is the fourteenth concert tour by Canadian singer Celine Dion, in support of her English-language studio album ''Courage'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyre Peninsula
The Eyre Peninsula is a triangular peninsula in South Australia. It is bounded by the Spencer Gulf on the east, the Great Australian Bight on the west, and the Gawler Ranges to the north. Originally called Eyre’s Peninsula, it was named after explorer Edward John Eyre, who explored parts of the peninsula in 1839–41. The coastline was first charted by the expeditions of Matthew Flinders in 1801–02 and French explorer Nicolas Baudin around the same time. Flinders also named the nearby Yorke’s Peninsula and Spencer’s Gulph on the same voyage. The peninsula's economy is primarily agricultural, with growing aquaculture, mining, and tourism sectors. The main towns are Port Lincoln in the south, Whyalla and Port Augusta in the northeast, and Ceduna in the northwest. Port Lincoln (''Galinyala'' in Barngarla), Whyalla and Port Augusta (''Goordnada'') are part of the Barngarla Aboriginal country. Ceduna is within the Wirangu country. Naming and extent The peninsula was n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denman Glacier
Denman Glacier is a glacier wide, descending north some , which debouches into the Shackleton Ice Shelf east of David Island, Queen Mary Land. It was discovered in November 1912 by the Western Base party of the Australasian Antarctic Expedition under Sir Douglas Mawson. Mawson named the glacier for Lord Denman, Governor-General of Australia in 1911, a patron of the expedition. The canyon under Denman Glacier has been found by ''BedMachine Antarctica'' project (under the leadership of the University of California, Irvine) to be the deepest natural location on land (or at least not under liquid water) worldwide, with the bedrock being below sea level. Calving of Denman Glacier into the Mawson Sea gives rise to the periodically appearing Pobeda Ice Island. Instability and retreat A 2020 study reported Denman Glacier has retreated 5.4±0.3 km over a 20-year-period from 1996 to 2017–2018. The study projects that the glacier has the potential to undergo a rapid, irreversibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darling Scarp
The Darling Scarp, also referred to as the Darling Range or Darling Ranges, is a low escarpment running north–south to the east of the Swan Coastal Plain and Perth, Western Australia. The escarpment extends generally north of Bindoon, to the south of Pemberton. The adjacent Darling Plateau goes easterly to include Mount Bakewell near York and Mount Saddleback near Boddington. It was named after the Governor of New South Wales, Lieutenant-General Ralph Darling. History The feature was first recorded as General Darling Range by Charles Fraser, Government Botanist with Captain James Stirling aboard in March 1827. Maps from the 1830s show the scarp labelled " General Darlings Range"; this later became Darling Range, a name by which the formation was still commonly known in the late 20th century despite common understanding of it being an escarpment. There is also a tendency to identify the locations on or to the east of the scarp as being in the "Perth Hills" (or simpl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naturaliste Plateau
The Naturaliste Plateau is one of several large submarine plateaus extending from Western Australia into the Indian Ocean. It is a rectilinear plateau that covers an area of 90,000 square kilometres. Its width is about east-west and north-south. The water depths are from 1500 to 5000 metres. The Mentelle Basin and Naturaliste Trough lie between the mainland and this plateau. The plateau is bordered by the Perth Abyssal Plain in the north and west and the Australian-Antarctic Basin in the south.Naturaliste Plateau: Regional setting . . It is located within the Australian mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basement (geology)
In geology, basement and crystalline basement are crystalline rocks lying above the mantle and beneath all other rocks and sediments. They are sometimes exposed at the surface, but often they are buried under miles of rock and sediment. The basement rocks lie below a sedimentation, sedimentary platform (geology), platform or cover, or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic rock, metamorphic or Igneous rock, igneous in origin. In the same way, the sediments or sedimentary rocks on top of the basement can be called a "cover" or "sedimentary cover". Crustal rocks are modified several times before they become basement, and these transitions alter their composition. Continental crust Basement rock is the thick foundation of ancient, and oldest, metamorphic and igneous rock that forms the Crust (geology), crust of continents, often in the form of granite. Basement rock is contrasted to overlying sedimentary rocks which are laid down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Crust
Continental crust is the layer of igneous, sedimentary, and metamorphic rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves. This layer is sometimes called ''sial'' because its bulk composition is richer in aluminium silicates (Al-Si) and has a lower density compared to the oceanic crust, called ''sima'' which is richer in magnesium silicate (Mg-Si) minerals. Changes in seismic wave velocities have shown that at a certain depth (the Conrad discontinuity), there is a reasonably sharp contrast between the more felsic upper continental crust and the lower continental crust, which is more mafic in character. The continental crust consists of various layers, with a bulk composition that is intermediate (SiO2 wt% = 60.6). The average density of continental crust is about , less dense than the ultramafic material that makes up the mantle, which has a density of around . Continental crust is also less dense ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mawson Craton
Sir Douglas Mawson OBE FRS FAA (5 May 1882 – 14 October 1958) was an Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during the Heroic Age of Antarctic Exploration. Mawson was born in England and came to Australia as an infant. He completed degrees in mining engineering and geology at the University of Sydney. In 1905 he was made a lecturer in petrology and mineralogy at the University of Adelaide. Mawson's first experience in the Antarctic came as a member of Shackleton's ''Nimrod'' Expedition (1907–1909), alongside his mentor Edgeworth David. They were part of the expedition's northern party, which became the first to attain the South Magnetic Pole and to climb Mount Erebus. After his participation in Shackleton's expedition, Mawson became the principal instigator of the Australasian Antarctic Expedition (1911–1914). The expedition explored thousands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
