Tacora

Last updated

Tacora
Tacora.jpg
Tacora in 2004
Highest point
Elevation 5,980 m (19,620 ft) [1]
Prominence 1,721 m (5,646 ft) [2]
Parent peak Nevado Sajama
Listing Ultra
Coordinates 17°43′14″S69°46′22″W / 17.72056°S 69.77278°W / -17.72056; -69.77278
Geography
Relief Map of Chile.jpg
Red triangle with thick white border.svg
Tacora
Parent range Andes
Geology
Mountain type Stratovolcano
Volcanic arc/belt Central Volcanic Zone
Last eruption Unknown

Tacora is a stratovolcano located in the Andes of the Arica y Parinacota Region of Chile. Near the border with Peru, it is one of the northernmost volcanoes of Chile. It is part of the Central Volcanic Zone in Chile, one of the four volcanic belts of the Andes. The Central Volcanic Zone has several of the highest volcanoes in the world. Tacora itself is a stratovolcano with a caldera and a crater. The youngest radiometric age is 50,000 years ago and it is heavily eroded by glacial activity.

Contents

Volcanism in the Central Volcanic Zone results from the subduction of the Nazca Plate beneath the South America Plate. Tacora is constructed on the so-called "Arica Altiplano" and is part of a north–south alignment of volcanoes. Tacora itself has uncertain reports of historical eruptions and there are active fumaroles.

The fumarolic activity has resulted in the emplacement of substantial deposits of sulfur, which were already mentioned centuries ago. Towards the latter 19th century, systematic mining of the sulfur deposits of Tacora occurred and substantial mining infrastructure was constructed on the mountain.

Geography and geomorphology

Tacora lies in the Arica y Parinacota Region of Chile, about 100 kilometres (62 mi) northeast of Arica. It is among the northernmost volcanoes of Chile [3] and poorly known. [4]

Tacora is part of the Central Volcanic Zone, [4] one out of several volcanic belts of the Andes. [3] The Central Volcanic Zone is one of the world's major volcanic provinces and features both a high density of volcanoes and some of the tallest volcanic edifices in the world. [5] Volcanoes in the Central Volcanic Zone include Sabancaya, El Misti and Ubinas in Peru and Tacora, Isluga, Irruputuncu, Ollague, San Pedro, Putana, Alitar, Lascar and Lastarria in Chile, Bolivia and Argentina; [3] there are about 34 volcanoes in the Chilean portion of the Central Volcanic Zone alone. [6] Of these Lascar is considered to be the most active, with a large eruption in 1993. [7] Aside from volcanoes, the Central Volcanic Zone also features geothermal fields such as El Tatio. [4]

The volcano is a 5,980 metres (19,620 ft) high [8] [9] cone with a summit caldera that opens northwest and a 500-metre (1,600 ft) wide crater below the summit [3] within the caldera scarp. [10] Steep lava flows form the bulk of the edifice, [11] along with lava domes and pyroclastic material, [12] and rise about 1.7 kilometres (1.1 mi) above the surrounding terrain. [8] The edifice is heavily eroded [13] with about 32 metres (105 ft) of rocks gone [14] but still has a circular shape. [13] There are traces of a sector collapse scar and of the resulting debris avalanche on the southeastern flank. [12]

According to some reports glaciers occur within the caldera at elevations above 5,500 metres (18,000 ft), [3] while other reports indicate the absence of perennial snow on the mountain. [15] Glacial valleys and moraines have been recognized on the eastern, southeastern and southern slopes of the volcano, [3] and cirques have been found at 5,000 metres (16,000 ft) elevation. These landforms suggest that the mountain was formerly glaciated. [15] Three sets of moraines have been described, one at 4,400 metres (14,400 ft) elevation possibly linked to the last glacial maximum, an older one at 4,500 metres (14,800 ft) elevation and a third at 4,900 metres (16,100 ft) elevation which may have formed during the Little Ice Age; [13] moraines reach thicknesses of 200 metres (660 ft). [8] There is an additional set of moraines at 4,350–4,300 metres (14,270–14,110 ft) elevation that has been correlated to pre-last glacial maximum glaciations, [16] as well as traces of ice cored moraines and rock glaciers. [17] Some rock glaciers still exist; unlike other glacial bodies in Chile the fronts of rock glaciers on Tacora are not retreating. [18]

The mountain is an important source of water for the region. [19] The Lluta River originates on Tacora, [20] and its waters are highly salty owing to their origin on the volcano. [21] The Chislluma River flows past the northeastern flank of Tacora and the Rio Caracarani past the southeastern one; finally, the Mauri Canal and Uchusuma Canal run along the southeastern slopes. [22]

On the western and northwestern flanks, solfataras are present [4] both in the form of fumaroles and of steaming ground, and the Aguas Calientes de Tacora hot springs are located 2 kilometres (1.2 mi) southwest of the volcano. [3] Further, geyserite cones indicate that geysers were formerly active on the volcano. [23] Seismic tomography has been used to image both the hydrothermal systems and magma systems of the volcano, [24] and Tacora has been prospected for geothermal power generation. [25] In 2009, the Chilean Ministry of Mining recorded bids for geothermal development at Tacora, [26] and one bid was approved by the Ministry in early 2010. [27]

Fumaroles

Fumarole gases are dominated by water vapour with other components including carbon dioxide, hydrogen chloride, hydrogen fluoride, hydrogen sulfide, nitrogen and sulfur dioxide. Hydrogen, methane and other hydrocarbons are also common in the exhalations. The temperatures of the fumaroles reach 82–93 °C (180–199 °F) [10] and daily sulfur dioxide emissions have been estimated to be 0.01–0.02 tonnes per day (0.12–0.23 g/s) in the major fumaroles. [28]

The fumarolic gases are interpreted to originate by the evaporation of an aquifer that is saturated by solfataric components, resulting both in the exhalation of gases and the development of acid hot springs. This aquifer is mostly replenished by precipitation and to a lesser degree by magmatic water. [29] Further, there appears to be a hydrothermal system with temperatures of 270–310 °C (518–590 °F) under the volcano that fumarolic gases pass through, [30] and a magma system between sea level and 2 kilometres (1.2 mi) of depth. [31] Overall, fumarolic gases at Tacora undergo substantial interaction with rocks and hydrothermal systems before they reach the surface. [32] A cluster of seismic activity below the eastern flank may also be correlated to a fluid system at depth. [33]

Geology

Subduction of the Nazca Plate beneath the South America Plate is responsible for the volcanism of the Andes. This volcanism does not occur along the entire strike of the Andes, but in three selected volcanic belts, the Northern Volcanic Zone, the Central Volcanic Zone and the Southern Volcanic Zone. A fourth volcanic zone, the Austral Volcanic Zone, lies south of the Southern Volcanic Zone. [5] These volcanically active belts are separated by gaps where recent volcanism is absent and the subducting plate descends in a much shallower angle. [34]

Volcanoes of the Peruvian Central Volcanic Zone generally occur within a narrow belt and are usually associated with normal faults. [35] Most edifices are between 1,500–3,000 metres (4,900–9,800 ft) high above their basement and consist of lava flows and pyroclastics. Old edifices are far more common in Chile than in Peru, and are especially rare in the northwestern part of Peru's volcanic zone; this may be the consequence of climatic factors or a later start of volcano-building activity in Peru. [36] About 17 volcanoes are fumarolically active in northern Chile, with igneous activity limited to about 6. [37]

The earliest volcanic activity in northern Chile occurred between 41 and 66 million years ago, and is linked to an ancient volcanic arc. [37] Later during the Miocene two separate but partially overlapping volcanic episodes occurred, the first of which was dominated by the emplacement of ignimbrites and the second by the growth composite volcanoes, with vigorous activity during the Pliocene and Pleistocene. [38]

Local

The basement beneath Tacora is formed by the Arica Altiplano, a formation lying at about 4,200 metres (13,800 ft) altitude that consists of various sedimentary and volcanic rocks of Pliocene to Pleistocene age. Tacora together with Chupiquiña, Nevado El Fraile and Nevado La Monja forms a 10 kilometres (6.2 mi) long alignment of volcanoes that crosses into Peru and extends from south to north. [3] In addition, a fault system known as the Challaviento reverse fault passes underneath the volcano; it also extends into Peru where it belongs to the active Incapuquio–Challaviento fault system. [39]

Composition

The volcano is composed of dacite and lesser amounts of andesite [12] in the form of pyroclastic material and lava flows; the latter are predominantly andesitic to basaltic andesite. Minerals contained in the lava flows are biotite, hornblende, olivine, [3] plagioclase and both orthopyroxene and clinopyroxene; [11] alteration has led to the formation of clays. The volcanic rocks are subdivided into two units, an andesitic-dacitic one that forms the bulk of the volcano dacitic lava dome. [8]

Eruptive history

Tacora was active during the Pleistocene and Holocene epochs [4] less than 700,000 years ago, [28] with one rock sample dated by potassium-argon dating giving an age of 490,000 years before present, [11] an age often given to the entire volcano, [16] as well as another of 50,000 years before present on the upper western flank. [12] Other dating efforts have yielded ages of 340,000 ± 60,000 and 363,000 ± 7,000 years ago. [8] The crater and lava flows on the southern flank are probably the most recent manifestations of volcanic activity. [3] Tacora is a possible source of the AD 400-720 Khonkho tephra. [40]

The volcano supposedly "collapsed" in the 1877 Iquique earthquake, according to secondhand information in a 1903 report on earthquakes in Chile. [41] Single reports of activity in 1830, 1930, 1937, 1939 and 1950 exist, [12] [42] but the volcano is considered to have no historic eruptions, with fumaroles [7] and seismicity the only ongoing activity. [12] Renewed activity is likely to mostly affect the southern, eastern and western slopes of the volcano. In particular the town of Tacora would be threatened, while pyroclastic fallout could impact more distant towns such as Visviri. [42]

Mining and sulfur

Sulfur is found between Tacora and Chupiquiña, and it has been quarried on the northwestern flank. [3] Sulfur deposits on Tacora are among the largest in Chile, with thick layers of sulfur covering surfaces of 0.2–0.3 square kilometres (0.077–0.116 sq mi) in the crater and on the northern and eastern slopes. [43] Fumarolic activity is to this day producing new sulfur deposits, [23] and some sulfur deposits may have been originally emplaced as liquid sulfur. [44]

Such sulfur deposits are relatively common on volcanoes of northern Chile, with less common occurrence in the other volcanically active parts of the Chilean Andes; [45] nearly all higher volcanoes in northern Chile are reported to host the mineral. [46] The sulfur develops chiefly from hydrogen sulfide in steam, which precipitates the mineral in rock cavities. Sulfur deposits are typically accompanied by discoloured rocks, since the formation of the sulfur is usually associated with hydrothermal alteration of rock formations. These colours can be spotted from large distances. Aside from sulfur, such deposits commonly contain antimony, arsenic, selenium and tellurium; [47] acid mine drainage occurs on the volcano and has resulted in pollution of the Azufre River within the Lluta River watershed. [48]

The earliest records of the sulfur bodies on Tacora date back to 1637. [49] Sulfur mining in Chile commenced in the late 19th century, driven by Peruvian, English and Chilean prospectors [50] and because the world demand of sulfur by the chemical industry and for other uses increased substantially at that time. [51] During the early 20th century, sulfur mining was widespread in northern Chile and of high global importance, [52] a number of highly pure deposits of sulfur can be found in northern Chile from the Peruvian border south to the Puna de Atacama region. [53]

A. Barrón, Filomeno Cerda, Luis Koch and Rosa Landaeta owned sulfur deposits on Tacora in 1897, and sulfur processing plants were installed in 1888 and 1900 close to Tacora. Several companies mined in the region, which later were sometimes taken over by foreign corporations. [54] A number of mines were active on Tacora volcano, [49] with much of the mining infrastructure being present on the upper northwestern slopes of the mountain; [55] this infrastructure includes cableways, offices, workers' camps and treatment plants both on the mountain and on its foot. [51] The deposits were named Aguas Calientes, Ancara, Chislluma, Santa Elena and Villa Industrial, [56] and the total sulfur ore deposits of Tacora in 1952 were estimated to be 2,000,000 tonnes (2,000,000 long tons; 2,200,000 short tons) at a minimum; [57] in 1922 Tacora was considered the most important sulfur deposit of the Andes. [58]

Transport of sulfur occurred through a dedicated railroad down to Villa Industrial on the Arica-La Paz railway, [59] which served the further transport of the sulfur [49] to Arica, from where it was shipped to all of South America; [60] only after the opening of this railway in 1913 was it possible to use the Tacora deposits to the fullest extent. [51] It is worth noting that the 1929 border treaty between Peru and Chile had explicitly placed Tacora's sulfur deposits entirely within Chilean territory. [60]

The workforce of the Tacora mines was largely indigenous in origin, seeing as only indigenous people were used to the extreme climate conditions on the upper slopes of Tacora. The mining operations also played an important political-cultural role, as they exemplified the imposition of a new, modern culture onto the region. [51]

Mythology

The religious worship of mountains is widespread in the Central Andes. In local belief, Tacora and Sajama were two mountains in competition for two women (the Nevados de Payachata). Depending on the specific myth either the two women drove Tacora off and removed the top of the mountain, or Sajama did and injured Tacora; Tacora subsequently fled, shedding blood and a piece of its heart. [61]

Botanics

The Astragalus species Astragalus tacorensis is named after the volcano, which is its type locality. [62] The flowering plant Pycnophyllum macropetalum likewise has its type locality at Tacora. [63]

See also

Related Research Articles

<span class="mw-page-title-main">Misti</span> Stratovolcano in Peru

Misti is a dormant volcano located in the Andes mountains in southern Peru, rising above Peru's second-largest city, Arequipa. It is a conical volcano with two nested summit craters, the inner one of which contains a volcanic plug or lava dome with active fumaroles. The summit of the volcano lies on the margin of the outer crater and is 5,822 metres (19,101 ft) above sea level. Snow falls on the summit during the wet season, but does not persist; there are no glaciers. The upper slopes of the volcano are barren, while the lower slopes are covered by bushland.

<span class="mw-page-title-main">Parinacota (volcano)</span> Volcano on the border of Chile and Bolivia

Parinacota, 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.

<span class="mw-page-title-main">Lascar (volcano)</span> A stratovolcano within the Central Volcanic Zone of the Andes

Lascar is a stratovolcano in Chile within the Central Volcanic Zone of the Andes, a volcanic arc that spans Peru, Bolivia, Argentina and Chile. It is the most active volcano in the region, with records of eruptions going back to 1848. It is composed of two separate cones with several summit craters. The westernmost crater of the eastern cone is presently active. Volcanic activity is characterized by constant release of volcanic gas and occasional vulcanian eruptions.

<span class="mw-page-title-main">Ampato</span> Dormant Stratovovlcano in Southern Peru

Ampato is a dormant 6,288-metre (20,630 ft) stratovolcano in the Andes of southern Peru. It lies about 70–75 kilometres (43–47 mi) northwest of Arequipa and is part of a north-south chain that includes the volcanoes Hualca Hualca and Sabancaya, the last of which has been historically active.

<span class="mw-page-title-main">Isluga</span> Mountain in Chile

Isluga is a stratovolcano located in Colchane, 7 kilometres (4.3 mi) west of the Chile-Bolivia border and at the west end of a group of volcanoes lined up in an east-west direction, which also includes the volcanoes Cabaray and Tata Sabaya. Isluga has an elongated summit area and lies within the borders of Volcán Isluga National Park in Chile's Tarapacá Region.

<span class="mw-page-title-main">Aucanquilcha</span> Stratovolcano in Antofagasta Region, Chile

Aucanquilcha is a massive stratovolcano located in the Antofagasta Region of northern Chile, just west of the border with Bolivia and within the Alto Loa National Reserve. Part of the Central Volcanic Zone of the Andes, the stratovolcano has the form of a ridge with a maximum height of 6,176 metres (20,262 ft). The volcano is embedded in a larger cluster of volcanoes known as the Aucanquilcha cluster. This cluster of volcanoes was formed in stages over eleven million years of activity with varying magma output, including lava domes and lava flows. Aucanquilcha volcano proper is formed from four units that erupted between 1.04–0.23 million years ago. During the ice ages, both the principal Aucanquilcha complex and the other volcanoes of the cluster were subject to glaciation, resulting in the formation of moraines and cirques.

<span class="mw-page-title-main">Ollagüe</span> Stratovolcano in Bolivia and Chile

Ollagüe or Ullawi is a massive andesite stratovolcano in the Andes on the border between Bolivia and Chile, within the Antofagasta Region of Chile and the Potosi Department of Bolivia. Part of the Central Volcanic Zone of the Andes, its highest summit is 5,868 metres (19,252 ft) above sea level and features a summit crater that opens to the south. The western rim of the summit crater is formed by a compound of lava domes, the youngest of which features a vigorous fumarole that is visible from afar.

<span class="mw-page-title-main">Purico complex</span> Pleistocene volcanic complex in Chile

The Purico complex is a Pleistocene volcanic complex in Chile close to Bolivia, formed by an ignimbrite, several lava domes and stratovolcanoes and one maar. It is in the Chilean segment of the Central Volcanic Zone, one of the four volcanic belts which make up the Andean Volcanic Belt. The Central Volcanic Zone spans Peru, Bolivia, Chile and Argentina and includes 44 active volcanoes as well as the Altiplano–Puna volcanic complex, a system of large calderas and ignimbrites of which Purico is a member. Licancabur to the north, La Pacana southeast and Guayaques to the east are separate volcanic systems.

<span class="mw-page-title-main">Copiapó (volcano)</span> Mountain in Chile

Copiapó, also known as Azufre, is a stratovolcano located in the Atacama Region of Chile. The volcano separates the two portions in which Nevado Tres Cruces National Park is divided. In its vicinity lies Ojos del Salado. At its summit an Inca platform can be found.

<span class="mw-page-title-main">Taapaca</span> Volcano in Chile

Taapaca is a Holocene volcanic complex in northern Chile's Arica y Parinacota Region. Located in the Chilean Andes, it is part of the Central Volcanic Zone of the Andean Volcanic Belt, one of four distinct volcanic chains in South America. The town of Putre lies at the southwestern foot of the volcano.

<span class="mw-page-title-main">Volcán Putana</span> Mountain in Chile

Volcán Putana, sometimes referred to as Jorqencal or Machuca, is a stratovolcano located In the Central Volcanic Zone (CVZ) of the Andes on the border between Bolivia and Chile and close to the Sairecabur volcanic complex. Its summit is 5,884 metres (19,304 ft) above sea level and contains a summit crater with two smaller craters nested within it. Beneath the summit, the volcano features a number of lava domes and lava flows, some of which originated in flank vents.

<span class="mw-page-title-main">Cerro Capurata</span> Mountain in Bolivia

Cerro Capurata, also known as Elena Capurata or Quimsachatas is a stratovolcano in the Andes of Bolivia and Chile. To the south of Capurata lies Cerro Casparata and straight west Guallatiri, which shares a near-identical elevation with Capurata.

<span class="mw-page-title-main">Kunturiri (Bolivia and Chile)</span>

Kunturiri is a volcano in the Andes on the border of Bolivia and Chile which rises up to 5,762 metres (18,904 ft). On the Chilean side it is located in the Arica and Parinacota Region and on the Bolivian side in the Oruro Department, Sajama Province, Curahuara de Carangas Municipality, Sajama Canton as well as in the La Paz Department, Pacajes Province, Calacoto Municipality, Ulloma Canton.

Choquelimpie is a 5,327 metres (17,477 ft) high volcano in Chile. It is constructed from several separate layers of andesite and dacite on top of Tertiary and Precambrian layers. The volcano was active over six million years ago, with the neighbouring volcano Ajoya active over seven million years ago. Since then, erosion and glacial activity have dramatically reduced the height of the volcano and excavated a central depression.

Irruputuncu is a volcano in the commune of Pica, Tamarugal Province, Tarapacá Region, Chile, as well as San Pedro de Quemes Municipality, Nor Lípez Province, Potosí Department, Bolivia. The mountain's summit is 5,163 m (16,939 ft) high and has two summit craters—the southernmost 200 m (660 ft)-wide one has active fumaroles. The volcano also features lava flows, block and ash flows and several lava domes. The volcano is part of the Andean Central Volcanic Zone (CVZ).

<span class="mw-page-title-main">Sairecabur</span> Volcano between Bolivia and Chile

Sairecabur is a volcano located on the frontier between Bolivia and Chile. It is part of the Andean Central Volcanic Zone. Sairecabur proper is 5,971 m (19,590 ft) high; other mountains in the range are 5,722 m (18,773 ft) high Curiquinca, 5,819 m (19,091 ft) high Escalante and 5,748 m (18,858 ft) high Cerro Colorado, all of which have erupted a number of lava flows. Also in close proximity to Sairecabur lie the volcanic centres Licancabur, Putana and Juriques.

<span class="mw-page-title-main">Lastarria</span> Stratovolcano on the border between Chile and Argentina

Lastarria is a 5,697 metres (18,691 ft) high stratovolcano that lies on the border between Chile and Argentina. It is remote, and the surroundings are uninhabited but can be reached through an unpaved road. The volcano is part of the Central Volcanic Zone, one of the four segments of the volcanic arc of the Andes. Over a thousand volcanoes—of which about 50 are active—lie in this over 1,500 kilometres (930 mi) long chain of volcanoes, which is generated by subduction of the Nazca Plate beneath the South American Plate.

<span class="mw-page-title-main">Olca-Paruma</span> Volcanic complex in Chile

Olca-Paruma is a volcanic complex in Chile. Lying on the border between Chile and Bolivia, it is formed by an east–west alignment of volcanoes. From west to east, these are Cerro Paruma, Volcan Paruma, Olca, and Mencheca or Michincha. Aside from the mines of Ujina, Rosario, and Quebrada Blanca, the area is sparsely populated.

<span class="mw-page-title-main">Ubinas</span> Volcano in southern Peru

Ubinas is an active stratovolcano in the Moquegua Region of southern Peru, approximately 60 kilometres (37 mi) east of the city of Arequipa. Part of the Central Volcanic Zone of the Andes, it rises 5,672 metres (18,609 ft) above sea level. The volcano's summit is cut by a 1.4-kilometre-wide (0.87 mi) and 150-metre-deep (490 ft) caldera, which itself contains a smaller crater. Below the summit, Ubinas has the shape of an upwards-steepening cone with a prominent notch on the southern side. The gently sloping lower part of the volcano is also known as Ubinas I and the steeper upper part as Ubinas II; they represent different stages in the volcano's geological history.

<span class="mw-page-title-main">Guallatiri</span> Volcano in Parinacota Province, Chile

Guallatiri is a volcano in Chile with an elevation of 6,060 to 6,071 m. It is located southwest of the Nevados de Quimsachata volcanic group; some sources classify Guallatiri as a member. Guallatiri is a stratovolcano with numerous fumaroles around the summit. The summit may be a lava dome or volcanic plug, while the lower flanks of the volcano are covered by lava flows and lava domes. The volcano's eruptions have produced mostly dacite along with andesite and rhyolite. Past glaciation has left moraines on Guallatiri.

References

  1. ↑ "Tacora". Global Volcanism Program . Smithsonian Institution.
  2. ↑ "Tacora". Andes Specialists. Retrieved 2020-04-12.
  3. 1 2 3 4 5 6 7 8 9 10 11 Capaccioni et al. 2011, p. 78.
  4. 1 2 3 4 5 Capaccioni et al. 2011, p. 77.
  5. 1 2 Silva & Francis 1990, p. 287.
  6. ↑ Tamburello et al. 2014, p. 4961.
  7. 1 2 Tassi, Franco; Aguilera, Felipe; Vaselli, Orlando; Darrah, Thomas; Medina, Eduardo (30 June 2011). "Gas discharges from four remote volcanoes in northern Chile (Putana, Olca, Irruputuncu and Alitar): a geochemical survey". Annals of Geophysics. 54 (2): 121. doi: 10.4401/ag-5173 . ISSN   1593-5213.
  8. 1 2 3 4 5 Pavez et al. 2019, p. 2.
  9. ↑ "IGM Chile". IGM Chile. Page "Aguas Calientes" 50000:1. 14 April 2020. Retrieved 14 April 2020.{{cite web}}: CS1 maint: others (link)
  10. 1 2 Capaccioni et al. 2011, p. 79.
  11. 1 2 3 Wörner et al. 1994, p. 81.
  12. 1 2 3 4 5 6 Lara, Luis E. "La Red Nacional de Vigilancia Volcánica y el volcanismo activo en el Altiplano -Puna, Región de Arica -Parinacota" (PDF). sernageomin.cl (in Spanish). SERNAGEOMIN. p. 28. Archived from the original (PDF) on May 13, 2018. Retrieved 23 November 2017.
  13. 1 2 3 Oregon State University. "Tacora". Volcano World. Archived from the original on 2018-04-12. Retrieved 2014-01-27.
  14. ↑ Heine 2019, p. 274.
  15. 1 2 Hastenrath, Stefan L. (1967). "Observations on the Snow Line in the Peruvian Andes". Journal of Glaciology. 6 (46): 542–543. Bibcode:1967JGlac...6..541H. doi: 10.3189/S0022143000019754 . ISSN   0022-1430.
  16. 1 2 Heine 2019, p. 271.
  17. ↑ Heine 2019, p. 277.
  18. ↑ Barcaza, Gonzalo; Nussbaumer, Samuel U.; Tapia, Guillermo; Valdés, Javier; García, Juan-Luis; Videla, Yohan; Albornoz, Amapola; Arias, Víctor (2017). "Glacier inventory and recent glacier variations in the Andes of Chile, South America". Annals of Glaciology. 58 (75pt2): 12. Bibcode:2017AnGla..58..166B. doi: 10.1017/aog.2017.28 . ISSN   0260-3055.
  19. ↑ Yáñez, Nancy; Molina, Raúl (2011). Las aguas indígenas en Chile (in Spanish). LOM Ediciones. ISBN   9789560002655.
  20. ↑ Casanova, Manuel; Salazar, Osvaldo; Seguel, Oscar; Luzio, Walter (2013). "General Chile Overview". The Soils of Chile. World Soils Book Series. Springer, Dordrecht. p. 7. doi:10.1007/978-94-007-5949-7_1. ISBN   978-94-007-5948-0.
  21. ↑ Álvarez Miranda, Luis (2014). "Etnopercepcíon Andina: Valles Dulces y Valles Salados en la vertiente occidental de los Andes". Diálogo Andino (in Spanish) (44): 5–14. doi: 10.4067/S0719-26812014000200002 . ISSN   0719-2681.
  22. ↑ Naranjo, José A.; Clavero, Jorge E. (1 September 2005). "A rare case of grass flow induced by the M8.4 Arequipa earthquake, June 2001, in the Altiplano of Northern Chile". Quaternary Research. 64 (2): 243. Bibcode:2005QuRes..64..242N. doi:10.1016/j.yqres.2005.06.004. S2CID   140158137.
  23. 1 2 Ferraris & Vila 1990, p. 698.
  24. ↑ Pavez Orrego, Claudia; Comte, Diana; Gutierrez, Francisco; Gaytan, Diego (1 April 2016). "Analysis of the Magmatic – Hydrothermal volcanic field of Tacora Volcano, northern Chile, using passive seismic tomography". EGU General Assembly Conference Abstracts. 18: EPSC2016–10718. Bibcode:2016EGUGA..1810718P.
  25. ↑ Aravena, Diego; Muñoz, Mauricio; Morata, Diego; Lahsen, Alfredo; Parada, Miguel Ángel; Dobson, Patrick (1 January 2016). "Assessment of high enthalpy geothermal resources and promising areas of Chile". Geothermics. 59 (Part A): 8. Bibcode:2016Geoth..59....1A. doi: 10.1016/j.geothermics.2015.09.001 .
  26. ↑ "Exitoso proceso de licitación de 20 concesiones de exploración geotérmica en Chile". Electricidad (in Spanish). 27 August 2009.
  27. ↑ "Entregan siete nuevas concesiones geotérmicas en la Segunda Región". El Mercurio de Antofagasta (in Spanish). 20 January 2010. Retrieved 8 June 2018.
  28. 1 2 Clavero, J.; Soler, V.; Amigo, A. (August 2006). "Caracterización preliminar de la actividad sísmica y de desgasificación pasiva de volcanes activos de los Andes Centrales del norte de Chile" (PDF). 11th Chilean Geological Congress (in Spanish). Archived from the original (PDF) on June 5, 2016. Retrieved 23 November 2017.
  29. ↑ Capaccioni et al. 2011, p. 80.
  30. ↑ Capaccioni et al. 2011, p. 84.
  31. ↑ Pavez et al. 2019, p. 10.
  32. ↑ Tamburello et al. 2014, p. 4964.
  33. ↑ Pavez et al. 2019, p. 9.
  34. ↑ Wörner et al. 1994, p. 79.
  35. ↑ Silva & Francis 1990, p. 299.
  36. ↑ Silva & Francis 1990, p. 300.
  37. 1 2 Ferraris & Vila 1990, p. 692.
  38. ↑ Ferraris & Vila 1990, p. 691,692.
  39. ↑ Pavez et al. 2019, p. 4.
  40. ↑ Marsh, Erik J; Harpel, Christopher J; Damby, David E (December 2024). "The Khonkho tephra: A large-magnitude volcanic eruption coincided with the rise of Tiwanaku in the Andes". The Holocene. 34 (12): 1865, 1870. doi:10.1177/09596836241275000.
  41. ↑ Goll, Friedrich; Dessauer, Heinrich von (1903). Die Erdbeben Chiles : ein Verzeichnis der Erdbeben und Vulkanausbruche in Chile, bis zum Jahre 1879 (Inkl.) nebst einigen Allgemeinen Bemerkungen zu diesen Erdbeben (in German). Muenchen : Theodore Ackermann. p.  57.
  42. 1 2 Amigo, Álvaro R.; Bertin, Daniel U.; Orozco, Gabriel L. (2012). Peligros volcánicos de la Zona Norte de Chile (PDF) (Report). Carta geológica de Chile: Serie Geología Ambiental (in Spanish). Vol. 17. SERVICIO NACIONAL DE GEOLOGÍA Y MINERÍA. p. 11. ISSN   0717-7305. Archived from the original (PDF) on June 29, 2021. Retrieved 20 August 2021.
  43. ↑ Ferraris & Vila 1990, p. 697.
  44. ↑ Naranjo, Jose A. (22 March 2011). "Coladas de azufre de los volcanes Lastarria y Bayo en el Norte de Chile: Reologia, genesis e importancia en geologia planetaria". Andean Geology (in Spanish). 15 (1): 4. ISSN   0718-7106.
  45. ↑ Ferraris & Vila 1990, p. 691.
  46. ↑ Rudolph 1952, p. 568.
  47. ↑ Ferraris & Vila 1990, p. 696.
  48. ↑ Lizama-Allende, K.; Henry-Pinilla, D.; Diaz-Droguett, D. E. (1 August 2017). "Removal of Arsenic and Iron from Acidic Water Using Zeolite and Limestone: Batch and Column Studies". Water, Air, & Soil Pollution. 228 (8): 275. Bibcode:2017WASP..228..275L. doi:10.1007/s11270-017-3466-6. ISSN   0049-6979. S2CID   103728364.
  49. 1 2 3 Rudolph 1952, p. 567.
  50. ↑ Araya, Salazar & Soto 2016, p. 69.
  51. 1 2 3 4 Angelo, Dante (2017). "Monumentalidad y paisaje en la producción de fronteras: Explorando paisajes nacionales/istas del extremo norte de Chile". Chungará (Arica) (in Spanish). 50 (AHEAD): 289–306. doi: 10.4067/S0717-73562017005000108 . ISSN   0717-7356.
  52. ↑ Rudolph 1952, p. 562.
  53. ↑ Rudolph 1952, p. 565.
  54. ↑ Araya, Salazar & Soto 2016, p. 70.
  55. ↑ Araya, Salazar & Soto 2016, p. 75.
  56. ↑ Araya, Salazar & Soto 2016, p. 72.
  57. ↑ Rudolph 1952, p. 569.
  58. ↑ York, American Geographical Society of New (1922). Map of Hispanic America Publication. American Geographical Society of New York. p.  57. tacora.
  59. ↑ Rudolph 1952, p. 579.
  60. 1 2 Araya, Salazar & Soto 2016, p. 71.
  61. ↑ Reinhard, Johan (2002). "A high altitude archaeological survey in northern Chile". Chungará (Arica). 34 (1): 85–99. doi: 10.4067/S0717-73562002000100005 . ISSN   0717-7356.
  62. ↑ Gómez-Sosa, Edith (9 June 2010). "The Astragalus minimus (Leguminosae, Galegeae) Complex and One New Species for Chile and Argentina". Novon: A Journal for Botanical Nomenclature. 20 (2): 160. doi:10.3417/2008133. hdl: 11336/68605 . S2CID   84811213.
  63. ↑ Timaná, Martín E. (December 2017). "Nomenclatural Notes on the Andean Genera Pycnophyllopsis and Pycnophyllum (Caryophyllaceae)". Lundellia. 20 (1): 17. doi: 10.25224/1097-993x-20.1.4 . ISSN   1097-993X. S2CID   19078812.

Sources

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.