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Traversay Islands
The Traversay Islands ( es, Archipiélago Marqués de Traverse) are a group of three islands— Zavodovski, Leskov and Visokoi—at the northern end of the South Sandwich Islands. History The group was discovered in November 1819 by a Russian expedition under Bellingshausen, who named them for Jean-Baptiste Prevost de Sansac, Marquis de Traversay (1754–1831), a French naval officer who joined the Russian navy in 1791, at the request of an émigré Frenchman in Russian service, admiral Nassau-Siegen. He was Minister of Naval Affairs at Saint Petersburg, 1809–28, and chief promoter of Bellingshausen's Antarctic voyage. The name was previously transliterated as Traverse because it was incorrectly thought that the man commemorated was a Russian. Geography Zavodovski Island () lies southeast of South Georgia Island. It is the northernmost of the South Sandwich Islands and the nearest to South Georgia. The island is approximately across with a peak elevation of above sea l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zavodovski Island
Zavodovski Island is an uninhabited volcanic island in the Traversay Islands subgroup of the South Sandwich Islands. It lies southeast of South Georgia Island. It is the northernmost of the South Sandwich Islands and the nearest to South Georgia. The island is home to around a million pairs of breeding chinstrap penguins, which is the largest number of penguins found anywhere besides Antarctica. History Zavodovski Island was discovered and named by Russian Antarctic explorer Fabian Gottlieb von Bellingshausen on December 23, 1819. Bellingshausen named it after Captain-Lieutenant , who was captain of his ship, the Imperial Russian Navy sloop-of-war ''Vostok''. A group of three members of the expedition, Captain-Lieutenant Ivan Zavadovskiy, astronomer Prof. Ivan Simonov, and Lieutenant Dmitriy Demidov, landed on the island on December 24, 1820 and collected speciments of volcanic rocks, and caught some birds and penguins. The American schooner ''Pacific'' under Captain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Sandwich Trench
The South Sandwich Trench is a deep volcanic arc, arcuate ocean trench, trench in the South Atlantic Ocean lying to the east of the South Sandwich Islands. It is the deepest oceanic trench, trench of the Southern Atlantic Ocean, and the second deepest of the Atlantic Ocean after the Puerto Rico Trench. Since the trench extends south of the 60th parallel south, it also contains the deepest point in the Southern Ocean. The deepest point in the entire trench is the Meteor Deep, whose location prior to February 2019 was identified as at a depth of . This sounding was made during the German Meteor expedition. The depth is named after the German survey ship Meteor, which first surveyed the area as part of its namesake expedition in 1926. The deepest point below the 60th parallel south, the deepest point in the Southern Ocean, is dubbed by Victor Vescovo as the Factorian Deep, a name that he hopes will become official. This point lies at a depth of , and is the only subzero Hadal zone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subduction Zone
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle. A region where this process occurs is known as a subduction zone, and its surface expression is known as an arc-trench complex. The process of subduction has created most of the Earth's continental crust. Rates of subduction are typically measured in centimeters per year, with the average rate of convergence being approximately two to eight centimeters per year along most plate boundaries. Subduction is possible because the cold oceanic lithosphere is slightly denser than the underlying asthenosphere, the hot, ductile layer in the upper mantle underlying the cold, rigid lithosphere. Once initiated, stable subduction is driven mostly by the negative buoyancy of the dens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Island Arc
Island arcs are long chains of active volcanoes with intense seismic activity found along convergent tectonic plate boundaries. Most island arcs originate on oceanic crust and have resulted from the descent of the lithosphere into the mantle along the subduction, subduction zone. They are the principal way by which continental growth is achieved. Island arcs can either be active or inactive based on their seismicity and presence of volcanoes. Active arcs are ridges of recent volcanoes with an associated deep seismic zone. They also possess a distinct curved form, a chain of active or recently extinct volcanoes, a Oceanic trench, deep-sea trench, and a large negative Bouguer anomaly on the convex side of the volcanic arc. The small positive gravity anomaly associated with volcanic arcs has been interpreted by many authors as due to the presence of dense volcanic rocks beneath the arc. Inactive arcs are a chain of islands which contains older volcanic and volcaniclastic rocks. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Irving
David John Cawdell Irving (born 24 March 1938) is an English author and Holocaust denier who has written on the military and political history of World War II, with a focus on Nazi Germany. His works include ''The Destruction of Dresden'' (1963), ''Hitler's War'' (1977), ''Churchill's War'' (1987) and ''Goebbels: Mastermind of the Third Reich'' (1996). In his works, he argued that Adolf Hitler did not know of the Final Solution, extermination of Jews, or, if he did, he opposed it. Though Irving's Historical negationism, negationist claims and views of German war crimes#World War II, German war crimes in World War II (and Hitler's responsibility for them) were never taken seriously by mainstream historians, he was once recognised for his knowledge of Nazi Germany and his ability to unearth new historical documents. By the late 1980s, Irving had placed himself outside the mainstream of the study of history, and had begun to turn from soft-core' to 'hard-core' Holocaust denial", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocaust Denial
Holocaust denial is an antisemitic conspiracy theory that falsely asserts that the Nazi genocide of Jews, known as the Holocaust, is a myth, fabrication, or exaggeration. Holocaust deniers make one or more of the following false statements: *Nazi Germany's Final Solution was aimed only at deporting Jews and did not include their extermination. *Nazi authorities did not use extermination camps and gas chambers for the mass murder of Jews. *The actual number of Jews murdered is significantly lower than the accepted figure of approximately 6 million, typically around a tenth of that figure. *The Holocaust is a hoax perpetrated by the Allies, Jews, and/or Soviet Union. Similar to other forms of genocide denial, the methodologies of Holocaust deniers are based on a predetermined conclusion that ignores overwhelming historical evidence to the contrary. Scholars use the term ''denial'' to describe the views and methodology of Holocaust deniers in order to distinguish them from le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falkland Islands
The Falkland Islands (; es, Islas Malvinas, link=no ) is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and about from Cape Dubouzet at the northern tip of the Antarctic Peninsula, at a latitude of about 52°S. The archipelago, with an area of , comprises East Falkland, West Falkland, and 776 smaller islands. As a British overseas territory, the Falklands have internal self-governance, but the United Kingdom takes responsibility for their defence and foreign affairs. The capital and largest settlement is Stanley on East Falkland. Controversy exists over the Falklands' discovery and subsequent colonisation by Europeans. At various times, the islands have had French, British, Spanish, and Argentine settlements. Britain reasserted its rule in 1833, but Argentina maintains its claim to the islands. In April 1982, Argentine military forces invaded the islands. British a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Weinholt Hodson
Sir Arnold Wienholt Hodson (12 February 1881 – 26 May 1944)"Sir Arnold Hodson" Geni.com. was a British administrator who was Governor in turn of the , and the Gold Coast (British colony), Gold Coast. Background Hodson was born in |
Mount Hodson
Mount Hodson is an ice-covered stratovolcano and the highest point on Visokoi Island, South Sandwich Islands. It might have erupted in 1830 and 1930, and the summit usually steams. Named after Sir Arnold Wienholt Hodson (1881-1944), Governor of the Falkland Islands and Dependencies, 1926–30. See also *List of volcanoes in South Sandwich Islands This is a list of active and extinct volcanoes in the South Sandwich Islands. References {{DEFAULTSORT:Volcanoes in South Sandwich Islands South Sandwich Islands ) , anthem = "God Save the King" , song_type = , song = , image_ma ... References Volcanoes of South Georgia and the South Sandwich Islands Mountains and hills of South Georgia and the South Sandwich Islands Holocene stratovolcanoes Active volcanoes {{SouthGeorgia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
