Tralcán
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Tralcán
Tralcán ( mapudungun for ''thunder'') is a triangular-shaped mountain, which is located near Riñihue Lake, Chile. It is located south of the outflow dividing western Riñihue in two arms. Despite having been sacred to the huilliches for centuries, the mount became famous when several landslides near Tralcan dammed the Riñihue Lake after the 1960 Valdivia earthquake. The water levels in the lake rose more than 20 m and became a threat to the existence of Valdivia city. These events came to be known as The Riñihuazo ("El Riñihuazo" in Spanish). There is evidence that a similar landslide occurred after the 1575 Valdivia earthquake. The mountain is made of volcanic sediments from the Triassic making it one of the few fossiliferous sequences from the Mesozoic in Zona Sur Zona Sur (''Southern Zone'') is one of the five natural regions on which CORFO divided continental Chile in 1950. Its northern border is formed by the Bío-Bío River, which separates it from the Central ...
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Tralcán Formation
Tralcán Formation ( es, Formación Tralcán) is a sedimentary geologic formation, formation of Triassic age in Los Ríos Region in Zona Sur, south–central Chile. It overlies unconformity, unconformably the Trafún Metamorphic Complex. Tralcán Formation and nearby Panguipulli Formation form possibly the remnants of an ancient lake and river system. The formation is named after Tralcán, Mount Tralcán on the western edge of Riñihue Lake.Herbst et al., 2005 Description The Tralcán Formation was first defined by Aguirre and Levi in 1964, based on the outcrop at Tralcán. The more than thick formation comprises reddish-grey conglomerate (geology), conglomerates with a sandy matrix and intercalated reddish shales. The shales of the formation contain abundant fossil flora. Fossils of ''Cladophlebistenia, Cladophlebistenia oeshi'' have helped to redefine the age of the formation, that was formerly considered Late Jurassic (Kimmeridgian to Tithonian), to the Rhaetian of the Triass ...
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Riñihue Lake
The Riñihue Lake ( es, Lago Riñihue ) is a lake of glacier, glacial origin in eastern Valdivia Province, southern Chile. It is surrounded by several mountains. The eastern side receives the waters of the Panguipulli Lake by the Enco River, its main contributor. It is the last of the Seven Lakes (Chile), Seven Lakes chain. In the west it is cut into two arms by the Tralcán Mount, and on the east side lies the Mocho-Choshuenco volcano. In the south the lake is bounded by the Cerros de Quimán mountains. The lake's name derives from the Mapudungun, Mapuche words ''rëngi'', "Cane (grass), cane", and ''hue'', "place". In the 16th century the lake was known as Comohue, from ''co mu'', "with water", and ''hue'', "place". The Riñihuazo The Riñihue lake became famous after an event known as the "Riñihuazo", which threatened to destroy several towns, villages and cities in southern Chile. During the Great Chilean earthquake a landslide near the Tralcan Mount dammed the Riñihue La ...
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1960 Valdivia Earthquake
The 1960 Valdivia earthquake and tsunami ( es, link=no, Terremoto de Valdivia) or the Great Chilean earthquake (''Gran terremoto de Chile'') on 22 May 1960 was the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale. It occurred in the afternoon (19:11 GMT, 15:11 local time), and lasted for approximately 10 minutes. The resulting tsunamis affected southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeast Australia, and the Aleutian Islands. The epicenter of this megathrust earthquake was near Lumaco, approximately south of Santiago, with Valdivia being the most affected city. The tremor caused localised tsunamis that severely battered the Chilean coast, with waves up to . The main tsunami traveled across the Pacific Ocean and devastated Hilo, Hawaii, where waves as high as were recorded over from the epicenter. The death toll and monetary losses arising from this widespread disaster are not ...
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Llecué
Llecué is a mountain in the commune of Los Lagos in Los Ríos Region, southern Chile. The mountain lies west of mount Tralcán and immediately south of San Pedro River. The eastern slope of the mountain is a sharp fault scarp as is part of its western slope. The name of the mountain is Mapuche The Mapuche ( (Mapuche & Spanish: )) are a group of indigenous inhabitants of south-central Chile and southwestern Argentina, including parts of Patagonia. The collective term refers to a wide-ranging ethnicity composed of various groups who sha ... based on ''llecu'', meaning near, and ''hue'', meaning place. The mountain lies next to the catastrophic landslide of 1575 which dammed San Pedro River causing a flood when the dam burst. References {{Authority control Mountains of Los Ríos Region ...
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Riñihuazo
The Riñihuazo is the name given to the landslide damming of Riñihue Lake on 22 May 1960, after a landslide caused by the Great Chilean earthquake blocked its outflow. According to the chronicler Mariño de Lobera a similar event occurred after the 1575 Valdivia earthquake. During the Great Chilean earthquake, several landslides near Tralcán Mountain blocked the outflow of Riñihue Lake at (). Riñihue Lake is the lowest of the Seven Lakes chain and receives a constant inflow from the Enco River. The blocked San Pedro River, which drains the lake, passes through several towns and the city of Valdivia before finally reaching Corral Bay. Because the San Pedro River was blocked, the water level of Riñihue Lake started to rise quickly. Each meter the water level rose was equivalent to 20 million cubic meters, which meant that 4.8 cubic kilometers of water would release into the San Pedro River (easily overpowering its flow capacity of 400 cubic meters per second) if it ...
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Valdivia (city)
Valdivia (; Mapuche: Ainil) is a city and commune in southern Chile, administered by the Municipality of Valdivia. The city is named after its founder Pedro de Valdivia and is located at the confluence of the Calle-Calle, Valdivia, and Cau-Cau Rivers, approximately east of the coastal towns of Corral and Niebla. Since October 2007, Valdivia has been the capital of Los Ríos Region and is also the capital of Valdivia Province. The national census of 2017 recorded the commune of Valdivia as having 166,080 inhabitants (''Valdivianos''), of whom 150,048 were living in the city. The main economic activities of Valdivia include tourism, wood pulp manufacturing, forestry, metallurgy, and beer production. The city is also the home of the Austral University of Chile, founded in 1954 and the Centro de Estudios Científicos. The city of Valdivia and the Chiloé Archipelago were once the two southernmost outliers of the Spanish Empire. From 1645 to 1740 the city depended directly on t ...
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Mapudungun
Mapuche (, Mapuche & Spanish: , or Mapudungun; from ' 'land' and ' 'speak, speech') is an Araucanian language related to Huilliche spoken in south-central Chile and west-central Argentina by the Mapuche people (from ''mapu'' 'land' and ''che'' 'people'). It is also spelled Mapuzugun and Mapudungu. It was formerly known as Araucanian, the name given to the Mapuche by the Spaniards; the Mapuche avoid it as a remnant of Spanish colonialism. Mapudungun is not an official language of the countries Chile and Argentina, receiving virtually no government support throughout its history. However, since 2013, Mapuche, along with Spanish, has been granted the status of an official language by the local government of Galvarino, one of the many Communes of Chile. It is not used as a language of instruction in either country's educational system despite the Chilean government's commitment to provide full access to education in Mapuche areas in southern Chile. There is an ongoing political ...
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Huilliche
The Huilliche , Huiliche or Huilliche-Mapuche are the southern partiality of the Mapuche macroethnic group of Chile. Located in the Zona Sur, they inhabit both Futahuillimapu ("great land of the south") and, as the Cunco subgroup, the north half of Chiloé Island. The Huilliche are the principal indigenous people of those regions.Villalobos ''et al''. 1974, p. 49. According to Ricardo E. Latcham the term Huilliche started to be used in Spanish after the second founding of Valdivia in 1645, adopting the usage of the Mapuches of Araucanía for the southern Mapuche tribes. Huilliche means 'southerners' (Mapudungun ''willi'' 'south' and ''che'' 'people'.) A genetic study showed significant affinities between Huilliches and indigenous peoples east of the Andes, which suggests but does not prove a partial origin in present-day Argentina. During the 16th, 17th, and 18th centuries, the mainland Huilliche were generally successful at resisting Spanish encroachment. However, after the H ...
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Landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated grade (slope), slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the She ...
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Prehispanic
In the history of the Americas, the pre-Columbian era spans from the original settlement of North and South America in the Upper Paleolithic period through European colonization, which began with Christopher Columbus's voyage of 1492. Usually, the era covers the history of Indigenous cultures until significant influence by Europeans. This may have occurred decades or even centuries after Columbus for certain cultures. Many pre-Columbian civilizations were marked by permanent settlements, cities, agriculture, civic and monumental architecture, major earthworks, and complex societal hierarchies. Some of these civilizations had long faded by the time of the first permanent European colonies (c. late 16th–early 17th centuries), and are known only through archaeological investigations and oral history. Other civilizations were contemporary with the colonial period and were described in European historical accounts of the time. A few, such as the Maya civilization, had their own wri ...
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Valdivia Province
Valdivia Province ( es, Provincia de Valdivia; ) is one of two provinces of the southern Chilean region of Los Ríos (XIV). The provincial capital is Valdivia. Located in the province are two important rivers, the Calle-Calle / Valdivia River and the Cruces River. It is part of Northern Patagonia and its wild virgin forest embrace the Patagonian Cordillera following the river Calle Calle down to the Pacific Ocean. It is known in Patagonia by the term "Bosque Valdiviano", referring to the primitive forest of Valdivia with its native trees. These forests are present in some parts of Northern Patagonia, both in Chile and Argentina. Municipalities *Valdivia *Lanco * Máfil *Panguipulli *Corral * Mariquina * Los Lagos *Paillaco Geography and demography According to the 2002 census by the National Statistics Institute National Institute of Statistics may refer to: *National Institute of Statistics of Bolivia *National Institute of Statistics of Cambodia *National Institute of Statistic ...
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Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archo ...
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