Jump to content

Andes

Edit links
Coordinates: 32°S 70°W / 32°S 70°W / -32; -70
From Wikipedia, the free encyclopedia
(Redirected from Andes mountain range)
This article is about the mountain range in South America. For other uses, see Andes (disambiguation).

Andes Mountains
Spanish: Cordillera de los Andes
An aerial view of the Andes between Santiago in Chile and Mendoza, Argentina with a large ice field on the southern slope of San José volcano (left), Marmolejo (right), and Tupungato (far right)
Highest point
PeakAconcagua, Mendoza, Argentina
Elevation6,961 m (22,838 ft)
Coordinates32°39′11.51″S 070°0′40.32″W / 32.6531972°S 70.0112000°W / -32.6531972; -70.0112000
Dimensions
Length8,900 km (5,500 mi)
Width330 km (210 mi)
Naming
Native nameAnti (Quechua)
Geography
Map of South America showing the Andes running along the entire western part (roughly parallel to the Pacific coast) of the continent
Countries
Range coordinates32°S 70°W / 32°S 70°W / -32; -70
"Cono de Arita" in the Puna de Atacama, Salta (Argentina)
Aconcagua

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 South to North through seven South American countries: Argentina, Chile, Bolivia, Peru, Ecuador, Colombia, and Venezuela.

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 are the highest mountain range which is outside of Asia. The range's highest peak, 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).

The Andes are also part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of the Americas and Antarctica.

Etymology

[edit]

The etymology of the word Andes has been debated. The majority consensus is that it derives from the Quechua word anti "east"[1] as in Antisuyu (Quechua for "east region"),[1] one of the four regions of the Inca Empire.

The term cordillera comes from the Spanish word cordel "rope"[2] and is used as a descriptive name for several contiguous sections of the Andes, as well as the entire Andean range, and the combined mountain chain along the western part of the North and South American continents.

Geography

[edit]
Aerial 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.

The Andes can be divided into three sections:

The Southern Andes in Argentina and Chile, south of Llullaillaco,
The Central Andes in Peru and Bolivia, and
The Northern Andes in Venezuela, Colombia, and Ecuador.

At the northern end of the Andes, the separate Sierra Nevada de Santa Marta range is often, but not always, treated as part of the Northern Andes.[3]

The Leeward Antilles islands Aruba, Bonaire, and Curaçao, which lie in the Caribbean Sea off the coast of Venezuela, were formerly thought to represent the submerged peaks of the extreme northern edge of the Andes range, but ongoing geological studies indicate that such a simplification does not do justice to the complex tectonic boundary between the South American and Caribbean plates.[4]

Geology

[edit]
Geology of the Andes
Orogenies
Fold-thrust belts
Batholiths
Subducted structures
Faults
Andean Volcanic Belt
Pampean flat-slab
Terranes

The Andes are an orogenic belt of mountains along the Pacific Ring of Fire, a zone of volcanic activity that encompasses the Pacific rim of the Americas as well as the Asia-Pacific region. The Andes are the result of tectonic plate processes extending during the Mesozoic and Tertiary eras, caused by the subduction of oceanic crust beneath the South American Plate as the Nazca Plate and South American Plate converge. These processes were accelerated by the effects of climate. As the uplift of the Andes created a rain shadow on the western fringes of Chile, ocean currents and prevailing winds carried moisture away from the Chilean coast. This caused some areas of the subduction zone to be sediment-starved, causing excess friction and an increased rate of compressed coastal uplift.[5] The main cause of the rise of the Andes is the compression of the western rim of the South American Plate due to the subduction of the Nazca Plate and the Antarctic Plate. To the east, the Andes range is bounded by several sedimentary basins, such as the Orinoco Basin, the Amazon Basin, the Madre de Dios Basin, and the Gran Chaco, that separate the Andes from the ancient cratons in eastern South America. In the south, the Andes share a long boundary with the former Patagonia Terrane. To the west, the Andes end at the Pacific Ocean, although the Peru-Chile trench can be considered their ultimate western limit. From a geographical approach, the Andes are considered to have their western boundaries marked by the appearance of coastal lowlands and less-rugged topography. The Andes also contain large quantities of iron ore located in many mountains within the range.

The Andean orogen has a series of bends or oroclines. The Bolivian Orocline is a seaward-concave bending in the coast of South America and the Andes Mountains at about 18° S.[6][7] At this point, the orientation of the Andes turns from northwest in Peru to south in Chile and Argentina.[7] The Andean segments north and south of the Orocline have been rotated 15° counter-clockwise to 20° clockwise respectively.[7][8] The Bolivian Orocline area overlaps with the area of the maximum width of the Altiplano Plateau, and according to Isacks (1988) the Orocline is related to crustal shortening.[6] The specific point at 18° S where the coastline bends is known as the Arica Elbow.[9] Further south lies the Maipo Orocline, a more subtle orocline between 30° S and 38°S with a seaward-concave break in the trend at 33° S.[10] Near the southern tip of the Andes lies the Patagonian Orocline.[11]

Orogeny

[edit]
Main article: Andean orogeny

The western rim of the South American Plate has been the place of several pre-Andean orogenies since at least the late Proterozoic and early Paleozoic, when several terranes and microcontinents collided and amalgamated with the ancient cratons of eastern South America, by then the South American part of Gondwana.

The formation of the modern Andes began with the events of the Triassic, when Pangaea began the breakup that resulted in developing several rifts. The development continued through the Jurassic Period. It was during the Cretaceous Period that the Andes began to take their present form, by the uplifting, faulting, and folding of sedimentary and metamorphic rocks of the ancient cratons to the east. The rise of the Andes has not been constant, as different regions have had different degrees of tectonic stress, uplift, and erosion.

Across the 1,000-kilometer-wide (620 mi) Drake Passage lie the mountains of the Antarctic Peninsula south of the Scotia Plate, which appear to be a continuation of the Andes chain.

The far east regions of the Andes experience a series of changes resulting from the Andean orogeny. Parts of the Sunsás Orogen in Amazonian craton disappeared from the surface of the earth, being overridden by the Andes.[12] The Sierras de Córdoba, where the effects of the ancient Pampean orogeny can be observed, owe their modern uplift and relief to the Andean orogeny in the Tertiary.[13] Further south in southern Patagonia, the onset of the Andean orogeny caused the Magallanes Basin to evolve from being an extensional back-arc basin in the Mesozoic to being a compressional foreland basin in the Cenozoic.[14]

Seismic activity

[edit]

Tectonic forces above the subduction zone along the entire west coast of South America where the Nazca Plate and a part of the Antarctic Plate are sliding beneath the South American Plate continue to produce an ongoing orogenic event resulting in minor to major earthquakes and volcanic eruptions to this day. Many high-magnitude earthquakes have been recorded in the region, such as the 2010 Maule earthquake (M8.8), the 2015 Illapel earthquake (M8.2), and the 1960 Valdivia earthquake (M9.5), which as of 2024 was the strongest ever recorded on seismometers.

The amount, magnitude, and type of seismic activity varies greatly along the subduction zone. These differences are due to a wide range of factors, including friction between the plates, angle of subduction, buoyancy of the subducting plate, rate of subduction, and hydration value of the mantle material. The highest rate of seismic activity is observed in the central portion of the boundary, between 33°S and 35°S. In this area, the angle of subduction is very low, meaning the subducting plate is nearly horizontal. Studies of mantle hydration across the subduction zone have shown a correlation between increased material hydration and lower-magnitude, more-frequent seismic activity. Zones exhibiting dehydration instead are thought to have a higher potential for larger, high-magnitude earthquakes in the future.[15]

The mountain range is also a source of shallow intraplate earthquakes within the South American Plate. The largest such earthquake (as of 2024) struck Peru in 1947 and measured Ms  7.5. In the Peruvian Andes, these earthquakes display normal (1946), strike-slip (1976), and reverse (1969, 1983) mechanisms. The Amazonian Craton is actively underthrusted beneath the sub-Andes region of Peru, producing thrust faults.[16] In Colombia, Ecuador, and Peru, thrust faulting occurs along the sub-Andes due in response to compression brought on by subduction, while in the high Andes, normal faulting occurs in response to gravitational forces.[17]

In the extreme south, a major transform fault separates Tierra del Fuego from the small Scotia Plate.

Volcanism

[edit]
Main article: Andean Volcanic Belt
Rift Valley near Quilotoa, Ecuador
This photo from the ISS shows the high plains of the Andes Mountains in the foreground, with a line of young volcanoes facing the much lower Atacama Desert

The Andes range has many active volcanoes distributed in four volcanic zones separated by areas of inactivity. The Andean volcanism is a result of the subduction of the Nazca Plate and Antarctic Plate underneath the South American Plate. The belt is subdivided into four main volcanic zones that are separated from each other by volcanic gaps. The volcanoes of the belt are diverse in terms of activity style, products, and morphology.[18] While some differences can be explained by which volcanic zone a volcano belongs to, there are significant differences inside volcanic zones and even between neighboring volcanoes. Despite being a typical location for calc-alkalic and subduction volcanism, the Andean Volcanic Belt has a large range of volcano-tectonic settings, such as rift systems, extensional zones, transpressional faults, subduction of mid-ocean ridges, and seamount chains apart from a large range of crustal thicknesses and magma ascent paths, and different amount of crustal assimilations.

Ore deposits and evaporates

[edit]

The Andes Mountains host large ore and salt deposits, and some of their eastern fold and thrust belts act as traps for commercially exploitable amounts of hydrocarbons. In the forelands of the Atacama Desert, some of the largest porphyry copper mineralizations occur, making Chile and Peru the first- and second-largest exporters of copper in the world. Porphyry copper in the western slopes of the Andes has been generated by hydrothermal fluids (mostly water) during the cooling of plutons or volcanic systems. The porphyry mineralization further benefited from the dry climate that reduced the disturbing actions of meteoric water. The dry climate in the central western Andes has also led to the creation of extensive saltpeter deposits which were extensively mined until the invention of synthetic nitrates. Yet another result of the dry climate are the salars of Atacama and Uyuni, the former being the largest source of lithium and the latter the world's largest reserve of the element. Early Mesozoic and Neogene plutonism in Bolivia's Cordillera Central created the Bolivian tin belt as well as the famous, now-mostly-depleted, deposits of Cerro Rico de Potosí.

History

[edit]
Main article: History of Andean South America

The Andes Mountains, initially inhabited by hunter-gatherers, experienced the development of agriculture and the rise of politically centralized civilizations, which culminated in the establishment of the century-long Inca Empire. This all changed in the 16th century, when the Spanish conquistadors colonized the mountains in advance of the mining economy.

In the tide of anti-imperialist nationalism, the Andes became the scene of a series of independence wars in the 19th century, when rebel forces swept through the region to overthrow Spanish colonial rule. Since then, many former Spanish territories have become five independent Andean states.

Climate and hydrology

[edit]
See also: Tropical Andes, Dry Andes, and Wet Andes
Central Andes
Bolivian Andes

The climate in the Andes varies greatly depending on latitude, altitude, and proximity to the sea. Temperature, atmospheric pressure, and humidity decrease in higher elevations. The southern section is rainy and cool, while the central section is dry. The northern Andes are typically rainy and warm, with an average temperature of 18 °C (64 °F) in Colombia. The climate is known to change drastically in rather short distances. Rainforests exist just kilometers away from the snow-covered peak of Cotopaxi. The mountains have a large effect on the temperatures of nearby areas. The snow line depends on the location. It is between 4,500 and 4,800 m (14,764 and 15,748 ft) in the tropical Ecuadorian, Colombian, Venezuelan, and northern Peruvian Andes, rising to 4,800–5,200 m (15,748–17,060 ft) in the drier mountains of southern Peru and northern Chile south to about 30°S before descending to 4,500 m (14,760 ft) on Aconcagua at 32°S, 2,000 m (6,600 ft) at 40°S, 500 m (1,640 ft) at 50°S, and only 300 m (980 ft) in Tierra del Fuego at 55°S; from 50°S, several of the larger glaciers descend to sea level.[19]

The Andes of Chile and Argentina can be divided into two climatic and glaciological zones: the Dry Andes and the Wet Andes. Since the Dry Andes extend from the latitudes of the Atacama Desert to the area of the Maule River, precipitation is more sporadic, and there are strong temperature oscillations. The line of equilibrium may shift drastically over short periods of time, leaving a whole glacier in the ablation area or in the accumulation area.

In the high Andes of Central Chile and Mendoza Province, rock glaciers are larger and more common than glaciers; this is due to the high exposure to solar radiation.[20] In these regions, glaciers occur typically at higher altitudes than rock glaciers.[21] The lowest active rock glaciers occur at 900 m a.s.l. in Aconcagua.[21]

Though precipitation increases with height, there are semiarid conditions in the nearly-7,000-metre (22,966 ft) highest mountains of the Andes. This dry steppe climate is considered to be typical of the subtropical position at 32–34° S. The valley bottoms have no woods, just dwarf scrub. The largest glaciers, for example the Plomo Glacier and the Horcones Glaciers, do not even reach 10 km (6.2 mi) in length and have only insignificant ice thickness. At glacial times, however, c. 20,000 years ago, the glaciers were over ten times longer. On the east side of this section of the Mendozina Andes, they flowed down to 2,060 m (6,759 ft) and on the west side to about 1,220 m (4,003 ft) above sea level.[22][23] The massifs of Aconcagua (6,961 m (22,838 ft)), Tupungato (6,550 m (21,490 ft)), and Nevado Juncal (6,110 m (20,046 ft)) are tens of kilometres away from each other and were connected by a joint ice stream network. The Andes' dendritic glacier arms, components of valley glaciers, were up to 112.5 km (69.9 mi) long and over 1,250 m (4,101 ft) thick, and spanned a vertical distance of 5,150 m (16,896 ft). The climatic glacier snowline (ELA) was lowered from 4,600 m (15,092 ft) to 3,200 m (10,499 ft) at glacial times.[22][24][25][26][27][28][29][30][31]

Flora

[edit]
Laguna de Sonso tropical dry forest in Northern Andes

The Andean region cuts across several natural and floristic regions, due to its extension, from Caribbean Venezuela to cold, windy, and wet Cape Horn passing through the hyperarid Atacama Desert. Rainforests and tropical dry forests[32] used to[when?] encircle much of the northern Andes but are now greatly diminished, especially in the Chocó and inter-Andean valleys of Colombia. Opposite the humid Andean slopes are the relatively dry Andean slopes in most of western Peru, Chile, and Argentina. Along with several Interandean Valles, they are typically dominated by deciduous woodland, shrub and xeric vegetation, reaching the extreme in the slopes near the virtually-lifeless Atacama Desert.

About 30,000 species of vascular plants live in the Andes, with roughly half being endemic to the region, surpassing the diversity of any other hotspot.[33] The small tree Cinchona pubescens, a source of quinine which is used to treat malaria, is found widely in the Andes as far south as Bolivia. Other important crops that originated from the Andes are tobacco and potatoes. The high-altitude Polylepis forests and woodlands are found in the Andean areas of Colombia, Ecuador, Peru, Bolivia, and Chile. These trees, by locals referred to as Queñua, Yagual, and other names, can be found at altitudes of 4,500 m (14,760 ft) above sea level. It remains unclear if the patchy distribution of these forests and woodlands is natural, or the result of clearing which began during the Incan period. Regardless, in modern times, the clearance has accelerated, and the trees are now considered highly endangered, with some believing that as little as 10% of the original woodland remains.[34]

Fauna

[edit]
A male Andean cock-of-the-rock, a species found in humid Andean forests and the national bird of Peru
Herds of alpacas near Ausangate mountain
Main article: Fauna of the Andes

The Andes are rich in fauna: With almost 1,000 species, of which roughly 2/3 are endemic to the region, the Andes are the most important region in the world for amphibians.[33] The diversity of animals in the Andes is high, with almost 600 species of mammals (13% endemic), more than 1,700 species of birds (about 1/3 endemic), more than 600 species of reptiles (about 45% endemic), and almost 400 species of fish (about 1/3 endemic).[33]

The vicuña and guanaco can be found living in the Altiplano, while the closely related domesticated llama and alpaca are widely kept by locals as pack animals and for their meat and wool. The crepuscular (active during dawn and dusk) chinchillas, two threatened members of the rodent order, inhabit the Andes' alpine regions.[35][36] The Andean condor, the largest bird of its kind in the Western Hemisphere, occurs throughout much of the Andes but generally in very low densities.[37] Other animals found in the relatively open habitats of the high Andes include the huemul, cougar, foxes in the genus Pseudalopex,[35][36] and, for birds, certain species of tinamous (notably members of the genus Nothoprocta), Andean goose, giant coot, flamingos (mainly associated with hypersaline lakes), lesser rhea, Andean flicker, diademed sandpiper-plover, miners, sierra-finches and diuca-finches.[37]

Lake Titicaca hosts several endemics, among them the highly endangered Titicaca flightless grebe[37] and Titicaca water frog.[38] A few species of hummingbirds, notably some hillstars, can be seen at altitudes above 4,000 m (13,100 ft), but far higher diversities can be found at lower altitudes, especially in the humid Andean forests ("cloud forests") growing on slopes in Colombia, Ecuador, Peru, Bolivia, and far northwestern Argentina.[37] These forest-types, which includes the Yungas and parts of the Chocó, are very rich in flora and fauna, although few large mammals exist, exceptions being the threatened mountain tapir, spectacled bear, and yellow-tailed woolly monkey.[35]

Birds of humid Andean forests include mountain toucans, quetzals, and the Andean cock-of-the-rock, while mixed-species flocks dominated by tanagers and furnariids are commonly seen—in contrast to several vocal but typically-cryptic species of wrens, tapaculos, and antpittas.[37]

A number of species such as the royal cinclodes and white-browed tit-spinetail are associated with Polylepis, and consequently also threatened.[37]

Human activity

[edit]
See also: Cultural periods of Peru, Inca Empire, and Viceroyalty of Peru

The Andes Mountains form a north–south axis of cultural influences. A long series of cultural development culminated in the expansion of the Inca civilization and Inca Empire in the central Andes during the 15th century. The Incas formed this civilization through imperialistic militarism as well as careful and meticulous governmental management.[39] The government sponsored the construction of aqueducts and roads in addition to pre-existing installations. Some of these constructions still exist today.

Frederic Edwin Church, Heart of the Andes, 1859.

Devastated by European diseases and by civil war, the Incas were defeated in 1532 by an alliance composed of tens of thousands of allies from nations they had subjugated (e.g. Huancas, Chachapoyas, Cañaris) and a small army of 180 Spaniards led by Francisco Pizarro. One of the few Inca sites the Spanish never found in their conquest was Machu Picchu, which lay hidden on a peak on the eastern edge of the Andes where they descend to the Amazon. The main surviving languages of the Andean peoples are those of the Quechua and Aymara language families. Woodbine Parish and Joseph Barclay Pentland surveyed a large part of the Bolivian Andes from 1826 to 1827.

Cities

[edit]

In modern times, the largest cities in the Andes are Bogotá, with a metropolitan population of over ten million, and Santiago, Medellín, Cali, and Quito. Lima is a coastal city adjacent to the Andes and is the largest city of all Andean countries. It is the seat of the Andean Community of Nations.

La Paz, Bolivia's seat of government, is the highest capital city in the world, at an elevation of approximately 3,650 m (11,975 ft). Parts of the La Paz conurbation, including the city of El Alto, extend up to 4,200 m (13,780 ft).

Other cities in or near the Andes include Bariloche, Catamarca, Jujuy, Mendoza, Salta, San Juan, Tucumán, and Ushuaia in Argentina; Calama and Rancagua in Chile; Cochabamba, Oruro, Potosí, Sucre, Tarija, and Yacuiba in Bolivia; Arequipa, Cajamarca, Cusco, Huancayo, Huánuco, Huaraz, Juliaca, and Puno in Peru; Ambato, Cuenca, Ibarra, Latacunga, Loja, Riobamba, and Tulcán in Ecuador; Armenia, Cúcuta, Bucaramanga, Duitama, Ibagué, Ipiales, Manizales, Palmira, Pasto, Pereira, Popayán, Sogamoso, Tunja, and Villavicencio in Colombia; and Barquisimeto, La Grita, Mérida, San Cristóbal, Tovar, Trujillo, and Valera in Venezuela. The cities of Caracas, Valencia, and Maracay are in the Venezuelan Coastal Range, which is a debatable extension of the Andes at the northern extremity of South America.

Transportation

[edit]

Cities and large towns are connected with asphalt-paved roads, while smaller towns are often connected by dirt roads, which may require a four-wheel-drive vehicle.[40]

The rough terrain has historically put the costs of building highways and railroads that cross the Andes out of reach of most neighboring countries, even with modern civil engineering practices. For example, the main crossover of the Andes between Argentina and Chile is still accomplished through the Paso Internacional Los Libertadores. Only recently[when?] have the ends of some highways that came rather close to one another from the east and the west been connected.[41] Much of the transportation of passengers is done via aircraft.

However, there is one railroad that connects Chile with Peru via the Andes, and there are others that make the same connection via southern Bolivia.

There are multiple highways in Bolivia that cross the Andes. Some of these were built during a period of war between Bolivia and Paraguay, in order to transport Bolivian troops and their supplies to the war front in the lowlands of southeastern Bolivia and western Paraguay.

For decades, Chile claimed ownership of land on the eastern side of the Andes. However, these claims were given up in about 1870 during the War of the Pacific between Chile and the allied Bolivia and Peru, in a diplomatic deal to keep Peru out of the war. The Chilean Army and Chilean Navy defeated the combined forces of Bolivia and Peru, and Chile took over Bolivia's only province on the Pacific Coast, some land from Peru that was returned to Peru decades later. Bolivia has been completely landlocked ever since. It mostly uses seaports in eastern Argentina and Uruguay for international trade because its diplomatic relations with Chile have been suspended since 1978.

Because of the tortuous terrain in places, villages and towns in the mountains—to which travel via motorized vehicles is of little use—are still located in the high Andes of Chile, Bolivia, Peru, and Ecuador. Locally, the relatives of the camel, the llama, and the alpaca continue to carry out important uses as pack animals, but this use has generally diminished in modern times. Donkeys, mules, and horses are also useful.

Agriculture

[edit]
Peruvian farmers sowing maize and beans
See also: Andean agriculture, Incan agriculture, and Vertical archipelago

The ancient peoples of the Andes such as the Incas have practiced irrigation techniques for over 6,000 years. Because of the mountain slopes, terracing has been a common practice. Terracing, however, was only extensively employed after Incan imperial expansions to fuel their expanding realm. The potato holds a very important role as an internally-consumed staple crop. Maize was also an important crop for these people, and was used for the production of chicha, important to Andean native people. Currently,[when?] tobacco, cotton, and coffee are the main export crops. Coca, despite eradication programs in some countries, remains an important crop for legal local use in a mildly stimulating herbal tea, and illegally for the production of cocaine.

Irrigation

[edit]
Irrigating land in the Peruvian Andes

In unirrigated land, pasture is the most common type of land use. In the rainy season (summer), part of the rangeland is used for cropping (mainly potatoes, barley, broad beans, and wheat).

Irrigation is helpful in advancing the sowing data of the summer crops, which guarantees an early yield in periods of food shortage. Also, by early sowing, maize can be cultivated higher up in the mountains (up to 3,800 m (12,500 ft)). In addition, it makes cropping in the dry season (winter) possible and allows the cultivation of frost-resistant vegetable crops like onion and carrot.[42]

Mining

[edit]
Chilean huasos, 19th century

The Andes rose to fame for their mineral wealth during the Spanish conquest of South America. Although Andean Amerindian peoples crafted ceremonial jewelry of gold and other metals, the mineralizations of the Andes were first mined on a large scale after the Spanish arrival. Potosí in present-day Bolivia and Cerro de Pasco in Peru were among the principal mines of the Spanish Empire in the New World. Río de la Plata and Argentina[43] derive their names from the silver of Potosí.

Currently, mining in the Andes of Chile and Peru places these countries as the first and second major producers of copper in the world. Peru also contains the 4th-largest goldmine in the world: the Yanacocha. The Bolivian Andes principally produce tin, although historically silver mining had a huge impact on the economy of 17th-century Europe.

There is a long history of mining in the Andes, from the Spanish silver mines in Potosí in the 16th century to the vast current porphyry copper deposits of Chuquicamata and Escondida in Chile and Toquepala in Peru. Other metals, including iron, gold, and tin, in addition to non-metallic resources are important. The Andes have a vast supply of lithium; Argentina, Bolivia, and Chile have the three largest reserves in the world respectively.[44]

Accion Andina's reforestation plan

[edit]

Depending on the country, this species goes by different names. In Peru, it is known as queñual, queuña, or queñoa; in Bolivia, as kewiña; in Ecuador, as yagual; and in Argentina, tabaquillo. Regardless of the name, Polylepis is a high-Andean genus encompassing up to 45 species of trees and shrubs distributed across the South American Andes, from Venezuela to Patagonia, found up to 5,000 meters above sea level.[45]

In 2000, biologist Constantino Aucca founded Ecoan, an NGO promoting conservation of threatened species and endangered Andean ecosystems. Since then, the organization has reforested 4.5 million plants across 16 protected areas, involving 37 Andean communities in the process.[45]

Aucca's efforts caught the attention of Florent Kaiser, a Franco-German forest engineer. During a visit to Peru in 2018, Aucca invited Kaiser to the Queuña Raymi festival, where Cusco communities engage in queñual reforestation.[45]

Peaks

[edit]
Main article: List of mountains in the Andes

This list contains some of the major peaks in the Andes mountain range. The highest peak is Aconcagua of Argentina.

Argentina

[edit]
The Aconcagua, Argentina, the highest mountain in the Americas
See also: List of mountains in Argentina

The border between Argentina and Chile

[edit]
See also: Argentina–Chile border
Huayna Potosí, Bolivia

Bolivia

[edit]
Sajama, Bolivia

Border between Bolivia and Chile

[edit]
Parinacota, Bolivia/Chile

Chile

[edit]
View of Cuernos del Paine in Torres del Paine National Park, Chile
Main article: List of mountains in Chile

Colombia

[edit]
Nevado del Huila, Colombia

Ecuador

[edit]
Chimborazo near Riobamba, Ecuador

Peru

[edit]
Huandoy, Peru
Alpamayo, Peru

Venezuela

[edit]
Pico Humboldt at sunset

See also

[edit]

Notes

[edit]
  1. ^ a b Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua–Spanish dictionary)
  2. ^ "Cordillera". etimologias.dechile.net. Retrieved 27 December 2015.
  3. ^ "Mountains, biodiversity and conservation". Food and Agriculture Organization. Retrieved 28 January 2019.
  4. ^ Miller, Meghan S.; Levander, Alan; Niu, Fenglin; Li, Aibing (23 June 2008). "Upper mantle structure beneath the Caribbean-South American plate boundary from surface wave tomography" (PDF). Journal of Geophysical Research. 114 (B1): B01312. Bibcode:2009JGRB..114.1312M. doi:10.1029/2007JB005507. Archived from the original (PDF) on 5 June 2010. Retrieved 21 November 2010.
  5. ^ Lamb, Simon; Davis, Paul (2003). "Cenozoic climate change as a possible cause for the rise of the Andes". Nature. 425 (6960): 792–797. Bibcode:2003Natur.425..792L. doi:10.1038/nature02049. PMID 14574402. S2CID 4354886.
  6. ^ a b Isacks, Bryan L. (1988), "Uplift of the Central Andean Plateau and Bending of the Bolivian Orocline" (PDF), Journal of Geophysical Research, 93 (B4): 3211–3231, Bibcode:1988JGR....93.3211I, doi:10.1029/jb093ib04p03211
  7. ^ a b c Kley, J. (1999), "Geologic and geometric constraints on a kinematic model of the Bolivian orocline", Journal of South American Earth Sciences, 12 (2): 221–235, Bibcode:1999JSAES..12..221K, doi:10.1016/s0895-9811(99)00015-2
  8. ^ Beck, Myrl E. (1987), "Tectonic rotations on the leading edge of South America: The Bolivian orocline revisited", Geology, 15 (9): 806–808, Bibcode:1987Geo....15..806B, doi:10.1130/0091-7613(1987)15<806:trotle>2.0.co;2
  9. ^ Prezzi, Claudia B.; Vilas, Juan F. (1998). "New evidence of clockwise vertical axis rotations south of the Arica elbow (Argentine Puna)". Tectonophysics. 292 (1): 85–100. Bibcode:1998Tectp.292...85P. doi:10.1016/s0040-1951(98)00058-4.
  10. ^ Arriagada, César; Ferrando, Rodolfo; Córdova, Loreto; Morata, Diego; Roperch, Pierrick (2013), "The Maipo Orocline: A first scale structural feature in the Miocene to Recent geodynamic evolution in the central Chilean Andes" (PDF), Andean Geology, 40 (3): 419–437
  11. ^ Charrier, Reynaldo; Pinto, Luisa; Rodríguez, María Pía (2006). "3. Tectonostratigraphic evolution of the Andean Orogen in Chile". In Moreno, Teresa; Gibbons, Wes (eds.). Geology of Chile. Geological Society of London. pp. 5–19. ISBN 978-1-86239-219-9.
  12. ^ Santos, J.O.S.; Rizzotto, G.J.; Potter, P.E.; McNaughton, N.J.; Matos, R.S.; Hartmann, L.A.; Chemale Jr., F.; Quadros, M.E.S. (2008). "Age and autochthonous evolution of the Sunsás Orogen in West Amazon Craton based on mapping and U–Pb geochronology". Precambrian Research. 165 (3–4): 120–152. Bibcode:2008PreR..165..120S. doi:10.1016/j.precamres.2008.06.009.
  13. ^ Rapela, C.W.; Pankhurst, R.J; Casquet, C.; Baldo, E.; Saavedra, J.; Galindo, C.; Fanning, C.M. (1998). "The Pampean Orogeny of the southern proto-Andes: Cambrian continental collision in the Sierras de Córdoba" (PDF). In Pankhurst, R.J; Rapela, C.W. (eds.). The Proto-Andean Margin of Gondwana. Vol. 142. pp. 181–217. doi:10.1144/GSL.SP.1998.142.01.10. S2CID 128814617. Archived (PDF) from the original on 9 October 2022. Retrieved 7 December 2015. {{cite book}}: |journal= ignored (help)
  14. ^ Wilson, T.J. (1991). "Transition from back-arc to foreland basin development in the southernmost Andes: Stratigraphic record from the Ultima Esperanza District, Chile". Geological Society of America Bulletin. 103 (1): 98–111. Bibcode:1991GSAB..103...98W. doi:10.1130/0016-7606(1991)103<0098:tfbatf>2.3.co;2.
  15. ^ Rodriguez Piceda, Constanza; Gao, Ya-Jian; Cacace, Mauro; Scheck-Wenderoth, Magdalena; Bott, Judith; Strecker, Manfred; Tilmann, Frederik (17 March 2023). "The influence of mantle hydration and flexure on slab seismicity in the southern Central Andes". Communications Earth & Environment. 4 (1): 79. Bibcode:2023ComEE...4...79R. doi:10.1038/s43247-023-00729-1. ISSN 2662-4435.
  16. ^ Dorbath, L.; Dorbath, C.; Jimenez, E.; Rivera, L. (1991). "Seismicity and tectonic deformation in the Eastern Cordillera and the sub-Andean zone of central Peru" (PDF). Journal of South American Earth Sciences. 4 (1–2): 13–24. Bibcode:1991JSAES...4...13D. doi:10.1016/0895-9811(91)90015-D.
  17. ^ Suárez, Gerardo; Molnar, Peter; Burchfiel, B. Clark (1983). "Seismicity, fault plane solutions, depth of faulting, and active tectonics of the Andes of Peru, Ecuador, and southern Colombia". Journal of Geophysical Research: Solid Earth. 88 (B12): 10403–10428. Bibcode:1983JGR....8810403S. doi:10.1029/JB088iB12p10403.
  18. ^ González-Maurel, Osvaldo; le Roux, Petrus; Godoy, Benigno; Troll, Valentin R.; Deegan, Frances M.; Menzies, Andrew (15 November 2019). "The great escape: Petrogenesis of low-silica volcanism of Pliocene to Quaternary age associated with the Altiplano-Puna Volcanic Complex of northern Chile (21°10′-22°50′S)". Lithos. 346–347: 105162. Bibcode:2019Litho.34605162G. doi:10.1016/j.lithos.2019.105162. ISSN 0024-4937. S2CID 201291787.
  19. ^ "Climate of the Andes". Archived from the original on 14 December 2007. Retrieved 9 December 2007.
  20. ^ Jan-Christoph Otto, Joachim Götz, Markus Keuschnig, Ingo Hartmeyer, Dario Trombotto, and Lothar Schrott (2010). Geomorphological and geophysical investigation of a complex rock glacier system—Morenas Coloradas valley (Cordon del Plata, Mendoza, Argentina)
  21. ^ a b Corte, Arturo E. (1976). "Rock glaciers". Biuletyn Peryglacjalny. 26: 175–197.
  22. ^ a b Kuhle, M. (2011): The High-Glacial (Last Glacial Maximum) Glacier Cover of the Aconcagua Group and Adjacent Massifs in the Mendoza Andes (South America) with a Closer Look at Further Empirical Evidence. Development in Quaternary Science, Vol. 15 (Quaternary Glaciation – Extent and Chronology, A Closer Look, Eds: Ehlers, J.; Gibbard, P.L.; Hughes, P.D.), 735–738. (Elsevier B.V., Amsterdam).
  23. ^ Brüggen, J. (1929): Zur Glazialgeologie der chilenischen Anden. Geol. Rundsch. 20, 1–35, Berlin.
  24. ^ Kuhle, M. (1984): Spuren hocheiszeitlicher Gletscherbedeckung in der Aconcagua-Gruppe (32–33° S). In: Zentralblatt für Geologie und Paläontologie Teil 1 11/12, Verhandlungsblatt des Südamerika-Symposiums 1984 in Bamberg: 1635–1646.
  25. ^ Kuhle, M. (1986): Die Vergletscherung Tibets und die Entstehung von Eiszeiten. In: Spektrum der Wissenschaft 9/86: 42–54.
  26. ^ Kuhle, M. (1987): Subtropical Mountain- and Highland-Glaciation as Ice Age Triggers and the Waning of the Glacial Periods in the Pleistocene. In: GeoJournal 14 (4); Kluwer, Dordrecht/ Boston/ London: 393–421.
  27. ^ Kuhle, M. (1988): Subtropical Mountain- and Highland-Glaciation as Ice Age Triggers and the Waning of the Glacial Periods in the Pleistocene. In: Chinese Translation Bulletin of Glaciology and Geocryology 5 (4): 1–17 (in Chinese language).
  28. ^ Kuhle, M. (1989): Ice-Marginal Ramps: An Indicator of Semiarid Piedmont Glaciations. In: GeoJournal 18; Kluwer, Dordrecht/ Boston/ London: 223–238.
  29. ^ Kuhle, M. (1990): Ice Marginal Ramps and Alluvial Fans in Semi-Arid Mountains: Convergence and Difference. In: Rachocki, A.H., Church, M. (eds.): Alluvial fans: A field approach. John Wiley & Sons Ltd, Chester-New York-Brisbane-Toronto-Singapore: 55–68.
  30. ^ Kuhle, M. (1990): The Probability of Proof in Geomorphology—an Example of the Application of Information Theory to a New Kind of Glacigenic Morphological Type, the Ice-marginal Ramp (Bortensander). In: GeoJournal 21 (3); Kluwer, Dordrecht/ Boston/ London: 195–222.
  31. ^ Kuhle, M. (2004): The Last Glacial Maximum (LGM) glacier cover of the Aconcagua group and adjacent massifs in the Mendoza Andes (South America). In: Ehlers, J., Gibbard, P.L. (Eds.), Quaternary Glaciation— Extent and Chronology. Part III: South America, Asia, Africa, Australia, Antarctica. Development in Quaternary Science, vol. 2c. Elsevier B.V., Amsterdam, pp. 75–81.
  32. ^ "Tropical and Subtropical Dry Broadleaf Forest Ecoregions". wwf.panda.org. Archived from the original on 25 April 2012. Retrieved 27 December 2015.
  33. ^ a b c Tropical Andes Archived 21 August 2010 at the Wayback Machine – biodiversityhotspots.org
  34. ^ "Pants of the Andies". Archived from the original on 15 December 2007. Retrieved 9 December 2007.
  35. ^ a b c Eisenberg, J.F.; & Redford, K.H. (2000). Mammals of the Neotropics, Volume 3: The Central Neotropics: Ecuador, Peru, Bolivia, Brazil. ISBN 978-0-226-19542-1
  36. ^ a b Eisenberg, J.F.; & Redford, K.H. (1992). Mammals of the Neotropics, Volume 2: The Southern Cone: Chile, Argentina, Uruguay, Paraguay. ISBN 978-0-226-70682-5
  37. ^ a b c d e f Fjeldsaa, J.; & Krabbe, N. (1990). Birds of the High Andes: A Manual to the Birds of the Temperate Zone of the Andes and Patagonia, South America. ISBN 978-87-88757-16-3
  38. ^ Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani and Young, editors (2008). Threatened Amphibians of the World. ISBN 978-84-96553-41-5
  39. ^ D'Altroy, Terence N. The Incas. Blackwell Publishing, 2003
  40. ^ "Andes travel map". Archived from the original on 24 September 2010. Retrieved 20 June 2010.
  41. ^ "Jujuy apuesta a captar las cargas de Brasil en tránsito hacia Chile by Emiliano Galli". La Nación. La Nación newspaper. 7 August 2009. Retrieved 22 July 2011.
  42. ^ W. van Immerzeel, 1989. Irrigation and erosion/flood control at high altitudes in the Andes. Published in Annual Report 1989, pp. 8–24, International Institute for Land Reclamation and Improvement, Wageningen, The Netherlands. On line: [1]
  43. ^ "Information on Argentina". Argentine Embassy London.
  44. ^ "Lithium: What Role Does Tesla Play In The Demand For This Precious Metal? - Commodity.com". commodity.com. Retrieved 9 March 2023.
  45. ^ a b c Ruiz, Iván Antezana Q. , Flor (11 January 2024). "Más de 10 millones de árboles nuevos: el premiado plan que reforesta los Andes". El País América (in Spanish). Retrieved 12 February 2024.{{cite web}}: CS1 maint: multiple names: authors list (link)

References

[edit]
  • Oncken, Onno; et al. (2006). The Andes. Frontiers in Earth Sciences. doi:10.1007/978-3-540-48684-8. ISBN 978-3-540-24329-8.
  • Biggar, J. (2005). The Andes: A Guide For Climbers. 3rd. edition. Andes: Kirkcudbrightshire. ISBN 0-9536087-2-7
  • de Roy, T. (2005). The Andes: As the Condor Flies. Firefly books: Richmond Hill. ISBN 1-55407-070-8
  • Fjeldså, J. & N. Krabbe (1990). The Birds of the High Andes. Zoological Museum, University of Copenhagen: ISBN 87-88757-16-1
  • Fjeldså, J. & M. Kessler (1996). Conserving the biological diversity of Polylepis woodlands of the highlands on Peru and Bolivia, a contribution to sustainable natural resource management in the Andes. NORDECO: Copenhagen. ISBN 978-87-986168-0-1

Bibliography

[edit]
[edit]
Retrieved from "https://wiki.riteme.site/w/index.php?title=Andes&oldid=1264624040"