Portal:Andes
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The Andes Portal
The Andes (/ˈændiːz/ AN-deez), Andes Mountains or Andean Mountain Range (Spanish: Cordillera de los Andes; Quechua: Anti) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is 8,900 km (5,530 mi) long and 200 to 700 km (124 to 435 mi) wide (widest between 18°S and 20°S latitude) and has an average height of about 4,000 m (13,123 ft). The Andes extend from north to south through seven South American countries: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile and Argentina.
Along their length, the Andes are split into several ranges, separated by intermediate depressions. The Andes are the location of several high plateaus—some of which host major cities such as Quito, Bogotá, Cali, Arequipa, Medellín, Bucaramanga, Sucre, Mérida, El Alto and La Paz. The Altiplano Plateau is the world's second-highest after the Tibetan Plateau. These ranges are in turn grouped into three major divisions based on climate: the Tropical Andes, the Dry Andes, and the Wet Andes.
The Andes Mountains are the highest mountain range outside Asia. The highest mountain outside Asia, Argentina's Aconcagua, rises to an elevation of about 6,961 m (22,838 ft) above sea level. The peak of Chimborazo in the Ecuadorian Andes is farther from the Earth's center than any other location on the Earth's surface, due to the equatorial bulge resulting from the Earth's rotation. The world's highest volcanoes are in the Andes, including Ojos del Salado on the Chile-Argentina border, which rises to 6,893 m (22,615 ft). (Full article...)
Selected articles
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Image 1
Yerupajá is a mountain of the Huayhuash mountain range in west central Peru, part of the Andes. It's located at Áncash, Bolognesi Province, Lauricocha Province. At 6,635 metres (21,768 ft) (other sources: 6,617 m (21,709 ft)) it is the second-highest in Peru and the highest in the Huayhuash mountain range. The summit is the highest point in the Amazon River watershed, and was first reached in 1950 by Jim Maxwell and Dave Harrah, and its northern peak (Yerupajá Norte) in 1968 by the Wellingtonian Roger Bates and Graeme Dingle. Many visitors consider Yerupajá to be the most spectacular peak in South America.
There have been only a few successful ascents of the peak because it is one of the hardest Andean high peaks to climb. The most popular route is the southwest face. The approach is normally made from Huaraz southwards via Chiquián and Jahuacocha. (Full article...) -
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Reventador is an active stratovolcano which lies in the eastern Andes of Ecuador. It lies in a remote area of the national park of the same name, which is Spanish for "exploder". Since 1541, it has erupted over 25 times, although its isolated location means that many of its eruptions have gone unreported.
The largest historical eruption occurred in 2002. During that eruption, the plume from the volcano reached a height of 17 kilometres (11 mi) and pyroclastic flows proceeded to 7 kilometres (4.3 mi) from the cone. On March 30, 2007, the mountain ejected ash to a height of about 3.2 kilometres (2.0 mi). No injuries or damage were reported. Its most recent eruption began on 27 July 2008, and it has remained in continuing eruption status (intermittent eruptive events without a break of 3 months or more) as of 15 October 2021. (Full article...) -
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Aconcagua (Spanish pronunciation: [akoŋˈkaɣwa]) is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in both the Western Hemisphere and the Southern Hemisphere with a summit elevation of 6,961 metres (22,838 ft). It lies 112 kilometres (70 miles) northwest of the provincial capital, the city of Mendoza, about five kilometres (three miles) from San Juan Province, and 15 km (9 mi) from Argentina's border with Chile. The mountain is one of the Seven Summits of the seven continents.
Aconcagua is bounded by the Valle de las Vacas to the north and east and the Valle de los Horcones Inferior to the west and south. The mountain and its surroundings are part of the Aconcagua Provincial Park. The mountain has a number of glaciers. The largest glacier is the Ventisquero Horcones Inferior at about 10 km (6 mi) long, which descends from the south face to about 3,600 m (11,800 ft) in elevation near the Confluencia camp.
Two other large glacier systems are the Ventisquero de las Vacas Sur and Glaciar Este/Ventisquero Relinchos system at about 5 km (3 mi) long. The best known is the northeastern or Polish Glacier, as it is a common route of ascent. (Full article...) -
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Lake Titicaca (/tɪtɪˈkɑːkə/; Spanish: Lago Titicaca [ˈlaɣo titiˈkaka]; Quechua: Titiqaqa Qucha) is a large freshwater lake in the Andes mountains on the border of Bolivia and Peru. It is often called the highest navigable lake in the world. Titicaca is the largest lake in South America both in terms of the volume of water and surface area.
Lake Titicaca has a surface elevation of 3,812 m (12,507 ft). The "highest lake" claim is generally considered to refer to commercial craft. Numerous smaller lakes around the world are at higher elevations. For many years, the largest vessel afloat on the lake was the 2,200-ton (2,425 U.S. tons), 79 m (259 ft) SS Ollanta. Today, the largest vessel is most likely the similarly sized train barge/float Manco Capac, operated by PeruRail. (Full article...) -
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Nevado Juncal is a mountain at the border of Argentina and Chile, at the head of Aconcagua Val. It has a height of 5,953 metres (19,531 ft). It is located at La Yesera, Los Andes Department, Valparaíso Region, at the Central Andes. The mountain hosts several glaciers including the Juncal Norte and Juncal Sur. (Full article...) -
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The Andean goose (Chloephaga melanoptera) is a species of waterfowl in tribe Tadornini of subfamily Anserinae. It is found in Argentina, Bolivia, Chile, and Peru. (Full article...) -
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Maipo is a stratovolcano in the Andes, lying on the border between Argentina and Chile. It is located 90 km (56 mi) south of Tupungato and about 100 km (62 mi) southeast of Santiago. It has a symmetrical, conical volcanic shape, and is among the southernmost 5,000 metre peaks in the Andes.
Maipo is located within the Diamante caldera, a feature measuring 15 km by 20 km that is about half a million years old. It rises about 1,900 m (6,230 ft) above the floor of the caldera. Immediately to the east of the peak, on the eastern side of the caldera floor, is Laguna del Diamante, a lake that formed when lava flows blocked drainage channels from the caldera in 1826. The Diamante Caldera erupted 450 cubic kilometers (108 cu mi) of tephra, 450 ka. (Full article...) -
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Mount Darwin (Spanish: Monte Darwin) is a peak in Isla Grande de Tierra del Fuego forming part of the Cordillera Darwin, the southernmost range of the Andes, just to the north of the Beagle Channel. It is 2,438 m (7,999 ft) high.
Monte Darwin was for a long time considered as the highest peak in Tierra del Fuego, but that distinction corresponds to a nearby mountain unofficially named Monte Shipton (also somewhat confusingly referred to as Darwin or Agostini-Darwin), which is about 2,580 m (8,460 ft) high and is located at . Both peaks are best climbed in late December, January, February and March. Monte Shipton was first climbed in 1962 by Eric Shipton, E. Garcia, F. Vivanco and C. Marangunic. (Full article...) -
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The Nevado del Quindío is an inactive volcano located in the Central Cordillera of the Andes in central Colombia. The summit marks the tripoint of the departments of Risaralda, Quindío and Tolima, and is also the highest point of the departments of Risaralda and Quindío. The mountain is one of the highest peaks in the Los Nevados National Natural Park, which is a wildlife sanctuary. There are no historical records of any eruption. The andesitic volcano is located on top of the Palestina Fault.
The snow fields and glaciers in the mountain are decreasing in a progressive way, about ten percent annually since the first scientific measures in the late 1980s, presumably because of global warming. (Full article...) -
Image 10
Lake Carhuacocha (possibly from Quechua qarwa leaf worm, larva of a beetle; pale, yellowish, golden, qucha lake,) is a lake in Peru located in the Huanuco Region, Lauricocha Province, on the border of the districts of Jesús and Queropalca. It lies on the east side of the Huayhuash mountain range. The lake is about 1.5 km long and 0.44 km at its widest point. (Full article...) -
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Ancohuma or Janq'u Uma (Aymara janq'u white, uma water, "white water", also spelled Janq'uma, other spellings, Jankho Uma, Jankhouma) is the third highest mountain in Bolivia (after Sajama and Illimani). It is located in the northern section of the Cordillera Real, part of the Andes, east of Lake Titicaca. It lies just south of the slightly lower Illampu, near the town of Sorata.
Despite being higher than Illampu, Ancohuma is a gentler peak, with less local relief, and it is a somewhat easier climb. The peak was first climbed in 1919, by Rudolf Dienst and Adolf Schulze. Their route, still the easiest, climbs the southwest face, and is rated PD (not very difficult). Other routes exist on the northwest ridge and the west face. Depending on the route desired, the mountain is approached either from the west or from the northeast; each approach requires two to three days from Sorata. (Full article...) -
Image 12
The guanaco (/ɡwɑːˈnɑːkoʊ/ ghwuah-NAH-koh; Lama guanicoe) is a camelid native to South America, closely related to the llama. Guanacos are one of two wild South American camelids; the other species is the vicuña, which lives at higher elevations. (Full article...) -
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Nevado Tres Cruces is a massif of volcanic origin in the Andes Mountains on the border of Argentina and Chile. It has two main summits, Tres Cruces Sur at 6,748 metres (22,139 ft) and Tres Cruces Centro at 6,629 m (21,749 ft) and a third minor summit, Tres Cruces Norte 6,030 m (19,780 ft). Tres Cruces Sur is the sixth highest mountain in the Andes.
The volcano has an extended history of activity, going back at least 1.5 million years. A number of lava domes surround the complex and a number of craters lie on its summits. The main volcano is of rhyodacitic composition and has generated two major ignimbritic eruptions, one 1.5 million years ago and a second 67,000 years ago. The last eruption was 28,000 years ago, but the volcano is a candidate source for a Holocene eruption and could erupt again in the future. (Full article...) -
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Pico La Concha is a mountain in the Andes of Venezuela. It has a height of 4,922 metres. (Full article...) -
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Corazón (Spanish: "heart") is an inactive, eroded stratovolcano of Ecuador, situated about 30 km southwest of Quito in the western slopes of the Andes. (Full article...) -
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Doña Juana (Spanish: Volcán Doña Juana) is a stratovolcano, located within the Doña Juana-Cascabel Volcanic Complex National Natural Park (Spanish: Parque Nacional Natural Complejo Volcánico Doña Juana-Cascabel) in Nariño, Colombia.
With a previous eruption of VEI 4, Doña Juana is rated as a "large" volcano of "cataclysmic" destructive power. During its last eruption, in 1906, more than 100 people were killed and many houses were destroyed. (Full article...) -
Image 17
Mount Hudson (Spanish: Volcán Hudson, Spanish: Cerro Hudson, Monte Hudson) is a volcano in the rugged mountains of southern Chile. Lying in the Southern Volcanic Zone of the Andes, it was formed by the subduction of the oceanic Nazca Plate under the continental South American Plate. The Nazca Plate ends there at the Chile Triple Junction; south of Hudson is a smaller volcano, followed by a long gap without active volcanoes that separates the Southern Volcanic Zone from the Austral Volcanic Zone. Hudson has the form of a 10-kilometre-wide (6-mile) volcanic caldera filled with ice. The Huemules Glacier emerges from the northwestern side of the caldera. The volcano has erupted rocks ranging from basalt to rhyolite, but large parts of the caldera are formed by non-volcanic rocks.
The volcano erupted numerous times in the late Pleistocene and Holocene, forming widespread tephra deposits both in the proximity of Hudson and in the wider region, and is the most active volcano in the region. The last eruption was in 2011. (Full article...) -
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Andean Geology (formerly Revista Geológica de Chile) is a peer-reviewed scientific journal published three times per year by the National Geology and Mining Service, Chile's geology and mining agency. The journal covers the field of geology and related earth sciences, primarily on issues that are relevant to South America, Central America, and Antarctica with a particular focus on the Andes. The journal was established in 1974 and articles are published in English and Spanish. The editor-in-chief is Waldo Vivallo (National Geology and Mining Service). (Full article...) -
Image 19
Parinacota (in Hispanicized spelling), Parina Quta or Parinaquta is a dormant stratovolcano on the border of Bolivia and Chile. Together with Pomerape it forms the Nevados de Payachata volcanic chain. Part of the Central Volcanic Zone of the Andes, its summit reaches an elevation of 6,380 metres (20,930 ft) above sea level. The symmetrical cone is capped by a summit crater with widths of 1 kilometre (0.62 mi) or 1,000 metres (3,300 ft). Farther down on the southern slopes lie three parasitic centres known as the Ajata cones. These cones have generated lava flows. The volcano overlies a platform formed by lava domes and andesitic lava flows.
The volcano started growing during the Pleistocene and formed a large cone. At some point between the Pleistocene and the Holocene, the western flank of the volcano collapsed, generating a giant landslide that spread west and formed a large, hummocky landslide deposit. The avalanche crossed and dammed a previously existing drainage, impounding or enlarging Lake Chungará; numerous other lakes now forming the headwaters of the Rio Lauca sprang up within the deposit. Volcanic activity rebuilt the cone after the collapse, cancelling out the collapse scar. (Full article...) -
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Cerro Bayo is a complex volcano on the northern part border between Argentina and Chile. It consists of four overlapping stratovolcanoes along a north–south line. The main volcano face is located on the Argentine side, thought the summit of the complex is just west of the border, in Chile. The volcano is about 800,000 years old, but it is associated with ongoing ground uplift encompassing also the more northerly Lastarria and Cordón del Azufre volcanoes. The 5,401-metre (17,720 ft) high summit is the source of two viscous dacitic lava flows with prominent levees that traveled to the north.
Elemental sulfur can be found at Bayo, both in the form of high-grade massive deposits and as extinct fumarole chimneys. The volcano formed in three separate phases that produced lava flows. One is dated to 1.6±0.4 million years ago. The volcano can bear snow in winter. The youngest dated rocks are about 23,000 years old; in 2007 a steam eruption were observed by researchers investigating nearby salt pans such as Salar Ignorado. (Full article...) -
Image 21
Pico Bolívar is the highest mountain in Venezuela, at 4,978 metres (16,332 ft). Located in Mérida State. It can be reached only by walking; the Mérida cable car, which was the highest and longest cable car in the world when it was built, only reaches Pico Espejo. From there it is possible to climb to Pico Bolívar. The peak is named after the Venezuelan independence hero Simón Bolívar.
The Pico Bolívar is located on the mountain previously called La Columna, next to El León (4,743 m) and El Toro (4,695 m). The new name was suggested by Tulio Febres Cordero in 1925. It was officially renamed on December 30, 1934. (Full article...) -
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Pico Mucuñuque is a mountain in the Andes of Venezuela. It has a height of 4,609 metres. (Full article...) -
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The Andean flicker (Colaptes rupicola) is a species of bird in subfamily Picinae of the woodpecker family Picidae. It is found in Argentina, Bolivia, Chile, Ecuador, and Peru. (Full article...) -
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Cotopaxi (Spanish pronunciation: [kotoˈpaksi]) is an active stratovolcano in the Andes Mountains, located near Latacunga city of Cotopaxi Province, about 50 km (31 mi) south of Quito, and 31 km (19 mi) northeast of the city of Latacunga, Ecuador. It is the second highest summit in Ecuador, reaching a height of 5,897 m (19,347 ft). Cotopaxi is among the highest active volcanoes in the world.
Cotopaxi is known to have erupted 87 times, resulting in the creation of numerous valleys formed by lahars (mudflows) around the volcano. An ongoing eruption began on 21 October 2022. (Full article...) -
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Cerro del Nacimiento is an Andean volcano of the Cordillera de la Ramada range, in the Catamarca Province of Argentina. Its summit is 6,436 metres (21,115 ft) above sea level. (Full article...)
Did you know...
- ... that the 1930s Polish Andean expeditions have been credited with several first ascents and the tracing of a new route to the summit of Aconcagua, the Andes' highest peak?
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General images
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Image 1Irrigating land in the Peruvian Andes (from Andes)
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Image 4Topographic map of the Andes by the NASA. The southern and northern ends of the Andes are not shown. The Bolivian Orocline is visible as a bend in the coastline and the Andes lower half of the map. (from Andean orogeny)
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Image 6Paleogeography of the Late Cretaceous South America. Areas subject to the Andean orogeny are shown in light grey while the stable cratons are shown as grey squares. The sedimentary formations of Los Alamitos and La Colonia that formed in the Late Cretaceous are indicated. (from Andean orogeny)
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Image 7Syncline next to Nordenskjöld Lake in Torres del Paine National Park. The syncline formed during the Andean orogeny. (from Andean orogeny)
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Image 8Central Andes (from Andes)
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Image 9Map of a north-south sea-parallel pattern of rock ages in western Colombia. This pattern is a result of the Andean orogeny. (from Andean orogeny)
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Image 13A male Andean cock-of-the-rock, a species found in humid Andean forests and the national bird of Peru (from Andes)
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Image 14Pico Humboldt at sunset (from Andes)
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Image 15The seaward tilting of the sedimentary strata of Salto del Fraile Formation in Peru was caused by the Andean orogeny. (from Andean orogeny)
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Image 17Aerial view of Valle Carbajal in the Tierra del Fuego. The Andes range is about 200 km (124 mi) wide throughout its length, except in the Bolivian flexure where it is about 640 kilometres (398 mi) wide. (from Andes)
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Image 18Peruvian farmers sowing maize and beans (from Andes)
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Image 23Mashua tubers (from Andean agriculture)
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Image 26Simplified sketch of the present-situation along most of the Andes (from Andean orogeny)
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Image 27Pacha Mama Ceremony (from Andean agriculture)
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Image 32Bolivian Andes (from Andes)
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Image 33Ulluco: Common crop of the Andean region (from Andean agriculture)
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