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Hualca Hualca
Highest point
Elevation	6,025 m (19,767 ft)
Parent peak	Ampato
Coordinates	15°43′14.15″S 071°51′19.80″W / 15.7205972°S 71.8555000°W / -15.7205972; -71.8555000
Geography
Hualca HualcaLocation of Hualca Hualca in Peru.
Location	Arequipa, Peru
Parent range	Andes, Peruvian Andes
Geology
Mountain type	Stratovolcano
Volcanic arc/belt	Central Volcanic Zone
Last eruption	Unknown

Hualca Hualca is a 6,025-metre (19,767 ft) high extinct volcano in the Andes of southern Peru. It is part of the Peruvian segment of the Central Volcanic Zone, one of several volcanic belts in the Andes. It lies about 70 kilometres (43 mi) northwest of Arequipa and is part of a north–south chain that includes the volcanoes Ampato and Sabancaya, the last of which has been historically active. The mountain is important to the towns of Cabanaconde and Pinchollo, who viewed it as their source of water and used to carry out religious ceremonies to guarantee continuing water supply.

Hualca Hualca features a wide amphitheatre on the northern flank, which was created by a gigantic landslide during the Pleistocene. After the collapse, renewed volcanic activity built a new summit and several lava dome complexes within the collapse scar. After cessation of volcanic activity, glaciers eroded the volcano and formed multiple moraines. The present-day volcano is covered by an ice cap, and during the last glacial maximum glaciers advanced to low altitudes. There are hot springs and geysers north of the mountain, and the magma chambers of Sabancaya are located below Hualca Hualca.

Name and mythology

In Aymara and Quechua, wallqa means "collar". According to the founding mythology of Cabanaconde, humans walked out of the mountain. People in southern Peru believed that children were sacrificed to Hualca Hualca. The mountain is considered to be a female entity, which was reflected in the gender norms at Cabanaconde.

Geography and geomorphology

Hualca Hualca is in the Caylloma Province of southern Peru, 70 kilometres (43 mi) northwest from Arequipa. Directly north of the volcano is the Colca Valley, an important tourism destination and agricultural area which was settled since before Inca times. The towns of Cabanaconde and Pinchollo lie at the northern foot of Hualca Hualca; other settlements in the area are Madrigal, Lari, Maca, Achoma and Ichupampa. Several roads run around the volcano, one goes to the Hornillo viewpoint on the northeastern flank. Canals and dams collect water flowing from the mountain and convey it to fields at Cabanaconde and west of Sabancaya. Other infrastructure on the mountain consists of homesteads mainly on its western flank and monitoring equipment of Peru's volcano monitoring service. Hualca Hualca can be climbed in a few days from the village of Pinchollo by the north side, and is not considered challenging from a mountaineering perspective.

Hualca Hualca is a heavily eroded stratovolcano. A 14 kilometres (8.7 mi) wide ragged semicircular ridge surrounds a 1,600 metres (5,200 ft) deep amphitheatre with 700–1,000 metres (2,300–3,300 ft) high cliffs; the 6,025 metres (19,767 ft) high summit is on the southeastern part of the ridge. The amphitheatre opens north to the Colca Valley at about 3,500 metres (11,500 ft) elevation. The scar was formed by gigantic landslide that removed a volume of about 1.3 cubic kilometres (0.31 cu mi) from the edifice. Within the scar are several massifs consisting of lava domes and lava flows, including 5,310 metres (17,420 ft) high Nevado de Puye close to the summit, 5,190 metres (17,030 ft) high Cerro Ahuashune farther west, and a 4,400 metres (14,400 ft) high massif with the "Mirador Cruz del Condor" viewpoint to the north. Between Ahuashune and Mirador Cruz del Condor is a lake, and there are cold water springs. Valleys, such as the Huayuray valley due north of the summit and the Hualca-Hualca at the western margin of the amphitheatre, run through the amphitheatre heading north; they are used as irrigation water sources.

The mountain towers above the Colca Valley with irregular slopes. Elsewhere around the perimetre of Hualca Hualca, it and its neighbours rise about 2 kilometres (1.2 mi) above the Altiplano. Notable valleys on its outer slopes are the Mollebaya to the east, Pujro Huayjo to the southwest and Mucurca to the west. Moraines and glacial sediments cover the western slopes of Hualca Hualca, while lava flows of Sabancaya onlap the southern slopes. The edifice is 25 kilometres (16 mi) wide. Surfaces on the volcano are frequently covered by debris and moraine rocks, and Sabancaya has deposited volcanic fallout on the land south of Hualca Hualca. At the western foot of Hualca Hualca is Laguna Mucurca.

Geology

Volcanism in South America occurs in four distinct zones along its western coast in the Andes: The Northern Volcanic Zone, the Central Volcanic Zone (CVZ), the Southern Volcanic Zone and the Austral Volcanic Zone. The volcanoes of Peru and the Central Andes belong to the CVZ, which includes more than 50 calderas, composite volcanoes and monogenetic volcanic fields that erupted during the Quaternary. In Peru they include (from north to south) Auquihuato, Sara Sara, Coropuna, Mismi, Hualca Hualca-Sabancaya-Ampato, Chachani, Misti, Ubinas, Huaynaputina, Ticsani, Tutupaca, Yucamane and Casiri. The volcanism of the Central Andes is caused by the northeastward subduction of the Nazca Plate under the South American Plate, at a rate of about 4.6 centimetres per year (1.8 in/year).

Hualca Hualca and its neighbours to the south Sabancaya and Ampato form the Ampato volcanic complex. With an area of about 630 square kilometres (240 sq mi) it is one of the largest volcanic complexes of the Central Andes. Hualca Hualca is the oldest volcano of the complex. Ampato began erupting 450,000 years ago and formed a summit dome 20,000-10,000 years ago. Sabancaya has been active during the Holocene and in historical time, and is the second-most active volcano in Peru.

The rock formations in the area are subdivided into five groups: The Paleozoic intrusive rocks that crop out in the Colca Valley; sedimentary rocks of the Yura Group in the Colca Valley; Oligocene-Miocene volcanic rocks of the Terraza Group, north of the Colca River; Pliocene ignimbrites of the Barroso Group around Hualca Hualca; and the Quaternary sediments of the Colca Group in the collapse scar of the volcano and the Colca Valley. Rocks in the Ampato volcanic complex form the Ampato Group, Some sources regard Hualca Hualca or the entire Ampato volcanic complex as members of the Barroso Group. The rocks underlying the Ampato volcanic complex consist of the Sencca Formation, which is between 4.9 and 1.4 million years old.

Most of the volcano is formed by lava flows, which are stacked more than 1 kilometre (0.62 mi) high. Numerous fault zones cross the northern sector of Hualca Hualca, from north to south these are the Chachas-Cabanaconde- Patapampa Fault System, Solarpampa-Puye Puye-Pillo Fault System and Pungo-Hornillo Fault System. Many show evidence of neotectonic activity, and some have produced earthquakes in recent times or undergo aseismic creep. There are three clusters of shallow seismic activity at Hualca Hualca driven by volcano-tectonic processes. Spontaneous potential analysis has found evidence of two buried structures in the northern part of Hualca Hualca, which might be buried calderas. Magnetotelluric analysis has identified various zones of high and low electrical conductivity under Hualca Hualca.

Composition

The composition of Hualca Hualca's rocks ranges from andesite-trachyandesite to dacite-trachydacite, and define a potassium-rich calc-alkaline rock suite similar to that of the other volcanoes in the Ampato volcanic complex. Phenocrysts include amphibole, biotite, plagioclase and pyroxene. The magmas that built Hualca Hualca formed when the mantle wedge, metasomatized during subduction, melted; the magmas underwent fractional crystallization before erupting at the surface. Minor geochemical differences between the rocks of the three Ampato complex volcanoes may reflect differences in magma generation processes. Hydrothermal manifestations are often accompanied by the deposition of minerals, e.g geysers at Pinchollo have emplaced various sulfate minerals.

Climate and life

Above 4,500 metres (14,800 ft) elevation, annual temperatures range from 1–6 °C (34–43 °F). There are no temperature data from Hualca Hualca, but data from Chachani imply stable temperatures year-round. Annual precipitation is about 0.8–1 metre (2 ft 7 in – 3 ft 3 in), decreasing at lower elevations. During December–March, the Intertropical Convergence Zone reaches the mountain and draws moisture from the Amazon, as part of the South American Summer Monsoon (Pacific Ocean-derived moisture is trapped beneath a temperature inversion at 800 metres (2,600 ft) elevation and cannot reach Hualca Hualca). This is the wet season, during which most of the annual precipitation falls. April to November is the dry season. The mountain is snow-covered year-round. Precipitation on Hualca Hualca may constitute a source of groundwater and recharge of the hydrothermal system. El Niño-Southern Oscillation events cause temperatures to increase and precipitation to decrease.

Below 4,500 metres (14,800 ft) elevation there is herbaceous vegetation, dominated by Festuca and Stipa but also featuring cacti, Peruvian feather grass and other pioneer plant species. Above that altitude, cushion plants such as Azorella compacta replace the herbs until 5,000 metres (16,000 ft) elevation, where most vegetation disappears save for lichens and mosses. Peat bogs grow in valleys on the southern side of Hualca Hualca in places where precipitation water and meltwater accumulate. They are classified as "bofedales". Between 3,800–4,500 metres (12,500–14,800 ft) elevation, the land is used for pasture. Animals include insects and birds like the Andean condor.

During the late Pleistocene, temperatures in the Peruvian Andes were up to 8–12 °C (14–22 °F) lower, and episodes of increased precipitation led to the formation of giant lakes in the Altiplano ("Lake Tauca") and (possibly) to the growth of glaciers. In recent decades, temperatures have been increasing at a rate of about 0.1 °C (0.18 °F) per decade. The warming has been blamed for the drying of springs and more irregular meltwater flows.

Glaciation

Past glaciations have left moraines down to altitudes of 3,650 metres (11,980 ft) around the entire volcano. Moraine tongues form complex and well-preserved structures; they are particularly well-developed on the eastern flank of the volcano and in the Huayuray valley, where they reach lengths of 7 kilometres (4.3 mi) and heights of 120 metres (390 ft). Other glacial landforms are striated/polished surfaces, glacial overdeepenings, glacial valleys, inactive cirques and outwash plains. During the Last Glacial Maximum, the Ampato volcanoes featured an ice cap with an area of about 347 square kilometres (134 sq mi).

The timing of glaciation in the Peruvian Andes is complex, with evidence of glacial advances at Hualca Hualca both during the Last Glacial Maximum and the "Tauca" and "Coipasa" periods. The advances produced several generations of moraines, and eroded older moraines. Cosmogenic isotope dating has yielded ages of 17,000-16,000 and 12,000 years ago for glacial advances at Hualca Hualca, implying that glacier retreat at Hualca Hualca occurred later than at other Central Andean volcanoes. Final glacier retreat occurred at the beginning of the Holocene; two advances in the Huayuray valley have been attributed to the Little Ice Age. The moraines at Hualca Hualca have been used to reconstruct equilibrium line altitude and temperature changes during the glaciation.

Glaciers persist around the summit in active cirques, and there is permanent snow cover on the subsidiary peaks. There are crevasses and seracs. Rock glaciers occur in numerous locations around the mountain. The glaciers are retreating; the Huayuray glacier lost half its surface area between 1955 and 2000 and a further near-halving occurred between 2000 and 2008; the Ampato volcanic complex might lose all of its glaciers by 2065, threatening water supplies in the region.

Eruption history

Hualca Hualca was active during the Pliocene and Pleistocene. It formed in several stages, with initial activity producing andesitic to dacitic-trachydacitic lava flows that build the main edifice and crop out in the collapse scar. Dates ranging from 1.07±0.3 million years ago to 610,000±10,000 have been obtained on this unit. Hydrothermal alteration and volcanic activity weakened the mountain until collapse, which did not occur during an eruption but may have been triggered by an earthquake. The first collapse removed the central sector of the volcano; subsequent activity rebuilt the summit and spilled lava flows over the northeastern flank without filling in the entire scar.

550,000 years ago, activity moved from the rebuilt summit into the collapse scar and produced Nevado de Puye, the Mirador Cruz del Condor and Cerro Ahuashune; dating has yielded ages of 416,000±34,000 years ago at Nevado de Puye and of 600,000±300,000 years ago at Ahuashune. A second, much smaller collapse during the last 600,000 years left a debris avalanche deposit inside the old collapse scar, which was originally incorrectly attributed to the first collapse. It dammed the Colca River, forming a now-vanished lake that reached until Chivay and left lake sediments until it overflowed and broke the dam. It is possible that both the first and second collapses formed lakes in the Colca Valley, and other lakes were formed by lava flows. The second collapse did not greatly alter the structure of Hualca Hualca. Lahars formed when volcanic activity impacted snowfields and flowed into the Colca Valley. Ignimbrites on the slopes testify to past explosive eruptions.

The younges date obtained on Hualca Hualca is 164,000 years ago. The volcano is considered extinct; gullying, glacial erosion and hydrothermal alteration have taken place. There may be Holocene vents with short lava flows southwest of the summit.

Fumarolic activity and interactions with Sabancaya

Hualca Hualca features fumarolic activity. A few kilometres north of the summit is a group of originally three geysers; one was buried by an earthquake in 2001 and another became a hot spring. The active geyser is known under the name "Pinchollo". Other geothermal manifestations are a solfatara, gas venting occurs at Paclla, hot springs occur in the amphitheatre, such as Puye Puye where there are mud pools. Some of these geothermal manifestations may reflect local tectonic features rather than being part of Hualca Hualca's volcanic system, however.

A hydrothermal system underlies the Ampato volcanic complex, including Hualca Hualca, where it feeds the hot springs and geysers, perhaps with water pooled in one of the buried calderas and heated by the magma under Hualca Hualca.

The magma chambers of Sabancaya are situated at about 13 kilometres (8.1 mi) depth under Hualca Hualca, where magma evolves and eventually ascends into the former volcano. There have been several episodes of surface uplift at Hualca Hualca linked to magma movements in the magmatic system:

• Between 1992 and 1996, totalling about 2 centimetres (0.79 in) per year and apparently followed by deflation lasting until 1999. This uplift is colocated with one of the buried calderas.
• Uplift between 2012 and 2019 caused numerous earthquakes north of Hualca Hualca when fault zones there failed under the pressure, and increased heat flow boosted activity in the fumaroles at Hualca Hualca.
• Between 2014 and 2020 the mountain rose at a rate of 4.5 centimetres (1.8 in) per year.

The deformation implies magma movements on the order of 0.1 cubic kilometres (0.024 cu mi) and is not strongly correlated to activity at Sabancaya. Such offset magmatic systems are not unusual among volcanoes. The magmatic system experiences the entry of new mafic magmas, that in turn drives activity in the shallow magmatic system and eruptions at Sabancaya, while explaining the low correlation between deformation and activity at Sabancaya.

Hualca Hualca is also impacted on the surface by activity at Sabancaya, recent eruptions have deposited volcanic ash on Hualca Hualca. The volcano is within the hazard zone of Sabancaya; ash falls from the latter volcano can melt the ice on Hualca Hualca to form lahars, threatening agricultural land and infrastructure such as the regionally important Majes-Siguas canal. Volcanic fallout from Sabancaya is frequent.

Religious and cultural importance

During Inka times, Hualca Hualca was regarded as an apu, a mountain deity. During eruptions of Sabancaya, the Inka rulers offered sacrifices, such as the mummy Juanita at Ampato, to the apus of the region. The veneration is attested since the 16th century, but probably pre-dates Inka rule, and remains of the offerings have been found at 5,800 metres (19,000 ft) elevation. In October 2011, the inhabitants of Pinchollo organized a procession on the mountain (accompanied by Catholic ritual) and offered various sacrifices. The mountain is also the principal deity of Cabanaconde and important to their cultural identity; the inhabitants call it their mother and liken its water to a mother's milk. Womens' hats in Cabanaconde are white, they represent the snow cover of the mountain. People preparing to emigrate conducted a ritual invoking the mountains of the region, including Hualca Hualca, before departing. In Chivay, a church is built in a manner that visitors face the mountain.

People living in Cabanaconde and Pinchollo view the mountain as the source of their water, which flows down through streams and canals into their lands, and the offerings aim at preserving a stable water supply. Before the advent of the Majes canal, people in Cabanaconde used to perform a regular water ritual at Hualca Hualca to begin each irrigation cycle and went every year to the mountain as a community-wide ceremony to assure the continued supply of water. Despite initial resistance to the Majes canal project and disputes about its supply, the town eventually began to use it and the water rituals involving Hualca Hualca largely (but not entirely) stopped.

See also

• List of mountains in the Andes

References

1. GNS 2017.
2. Bertonio 2011, p. 118.
3. Laime Ajacopa 2007, p. 129.
4. Shippee 1932, p. 575.
5. Reinhard 1985, p. 309.
6. Reinhard 1985, p. 312.
7. Gelles 2000, p. 39.
8. Zavala et al. 2015, p. 57.
9. ^ Alcalá-Reygosa et al. 2024, p. 2.
10. ^ Gelles 1996, p. 90.
11. ^ Alcalá-Reygosa et al. 2024, p. 4.
12. ^ Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, p. 3.
13. Rivera Porras, Aguilar Contreras & Manrique Llerena 2017, p. 15.
14. Gelles 2000, p. 50.
15. Rivera Porras, Aguilar Contreras & Manrique Llerena 2017, p. 7.
16. Cruz et al. 2024, p. 11.
17. Biggar 2020, p. 182.
18. AAJ 1998.
19. Juvigné et al. 2008.
20. Pritchard & Simons 2004, p. 10.
21. ^ Alcalá-Reygosa et al. 2024, p. 6.
22. ^ Gałaś, Panajew & Cuber 2014, p. 63.
23. ^ Alcalá-Reygosa et al. 2024, p. 12.
24. ^ Alcalá-Reygosa, Palacios & Zamorano Orozco 2016, p. 1163.
25. ^ Zavala Carrión et al. 2012, p. 10.
26. Alcalá-Reygosa et al. 2024, pp. 4, 6.
27. Tyc et al. 2022, p. 3.
28. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 152.
29. Rivera Porras, Aguilar Contreras & Manrique Llerena 2017, p. 10.
30. Gelles 2000, p. 13.
31. ^ Alcalá-Reygosa, Palacios & Zamorano Orozco 2016, p. 1161.
32. Ramos Palomino & Antayhua Vera 2011, p. 7.
33. Alcalá-Reygosa, Palacios & Zamorano Orozco 2016, p. 1160.
34. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 155.
35. Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, p. 10.
36. ^ Alcalá-Reygosa et al. 2024, p. 3.
37. Alcalá-Reygosa 2017, p. 653.
38. Puma et al. 2018, p. 55.
39. Zavala Carrión et al. 2012, p. 35.
40. Gałaś et al. 2018, p. 711.
41. ^ Alcalá-Reygosa et al. 2024, p. 7.
42. Zavala Carrión et al. 2012, p. 19.
43. Tyc et al. 2022, p. 16.
44. Cruz et al. 2024, p. 20.
45. Ramos Palomino & Antayhua Vera 2011, p. 9.
46. ^ MacQueen et al. 2020, p. 17.
47. Cruz et al. 2024, p. 86.
48. ^ Puma et al. 2021, p. 686.
49. ^ Torres et al. 2024, p. 33.
50. Alcalá-Reygosa et al. 2024, p. 9.
51. Rivera et al. 2015, p. 42.
52. Tyc et al. 2022, p. 11.
53. Ciesielczuk et al. 2013, p. 192.
54. Tyc et al. 2022, p. 4.
55. Tyc et al. 2022, pp. 4, 5.
56. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 151.
57. Alcalá-Reygosa 2017, p. 654.
58. Rivera et al. 2015, p. 43.
59. Zavala Carrión et al. 2012, p. 59.
60. Tyc et al. 2022, p. 18.
61. ^ Alcalá et al. 2011, p. 122.
62. ^ Gałaś, Panajew & Cuber 2014, p. 67.
63. Alcalá et al. 2011, p. 125.
64. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 154.
65. Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, p. 7.
66. Gelles 1996, p. 92.
67. Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 150.
68. ^ Alcalá-Reygosa 2017, p. 661.
69. Stensrud 2016, pp. 76, 77.
70. Rivera et al. 2015, p. 28.
71. Alcalá et al. 2005, p. 27.
72. Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, p. 5.
73. Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 149.
74. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 157.
75. ^ Alcalá-Reygosa, Palacios & Vázquez-Selem 2017, p. 158.
76. Alcalá-Reygosa 2017, p. 662.
77. Alcalá et al. 2011, p. 126.
78. Campos 2015, p. 12.
79. Campos 2015, p. 13.
80. Alcalá-Reygosa, Palacios & Zamorano Orozco 2016, p. 1166.
81. AAJ 1980.
82. Alcalá et al. 2011, p. 127.
83. Ramos Palomino & Antayhua Vera 2011, p. 10.
84. ^ Stensrud 2016, p. 76.
85. ^ Alcalá-Reygosa et al. 2024, p. 10.
86. ^ Alcalá-Reygosa et al. 2024, p. 11.
87. Alcalá-Reygosa et al. 2024, pp. 6, 10.
88. Zavala Carrión et al. 2012, p. 11-12.
89. Zavala Carrión et al. 2012, p. 39.
90. Alcalá et al. 2005, p. 26.
91. Ciesielczuk et al. 2013, p. 187.
92. Pritchard & Simons 2004, p. 20.
93. Ciesielczuk et al. 2013, p. 188.
94. Tyc et al. 2022, p. 5.
95. ^ Torres et al. 2024, p. 10.
96. Torres et al. 2024, p. 6.
97. ^ Torres et al. 2024, p. 32.
98. Tyc et al. 2022, p. 2.
99. Puma et al. 2018, p. 56.
100. Cruz et al. 2024, p. 87.
101. ^ Cruz et al. 2024, p. 21.
102. Cruz et al. 2024, p. 12.
103. Pritchard & Simons 2004, p. 35.
104. MacQueen et al. 2020, p. 20.
105. Cruz et al. 2024, p. 89.
106. Pritchard & Simons 2004, p. 34.
107. MacQueen et al. 2020, p. 16.
108. MacQueen et al. 2020, p. 21.
109. ^ Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, p. 13.
110. Soncco Calsina, Manrique Llerena & Lazarte Zerpa 2018, pp. 18–20.
111. Rivera et al. 2015, p. 72.
112. Observatorio Vulcanológico del INGEMMET 2017, p. 28.
113. Cacya, Huayhua & Meza 2018, pp. 227, 228.
114. Observatorio Vulcanológico del INGEMMET 2017, p. 37.
115. Chávez & Antonio 2001.
116. Gelles 1995, p. 719.
117. Reinhard 1985, p. 308.
118. Stensrud 2016, p. 75.
119. ^ Gelles 1995, p. 720.
120. Paerregaard 2018, p. 5.
121. Gelles 2000, p. 21.
122. Gelles 1995, p. 718.
123. Ceruti 2013, p. 346.
124. Huanca 2018, p. 66.
125. Gangui, Guillen & Pereira 2016, p. 313.
126. Boelens & Gelles 2005, p. 321.
127. ^ Gelles 1996, p. 97.
128. Gelles 1996, p. 96.
129. Gelles 2000, p. 46.
130. Gelles 1996, p. 103.
131. Paerregaard 2023, p. 93.

Sources

• "South America, Peru, Southern Peru, Hualca Hualca, Cordillera Volcánica". American Alpine Journal. 1980.
• "South America, Peru, Cordillera Occidental, High Altitude Archaeology and Various Ascents". American Alpine Journal. 1998.
• Alcalá, J.; Úbeda, J.; Thouret, J. C.; Palacios, D. (2005). Glacial Evolution in the Ampato–Sabancaya-Hualcahualca Volcanic Complex (Southern Peru) (PDF). 6th International Symposium on Andean Geodynamics (ISAG-2005). Barcelona. pp. 26–28.
• Alcalá-Reygosa, Jesús; Palacios, David; Zamorano Orozco, José Juan (19 October 2016). "Geomorphology of the Ampato volcanic complex (Southern Peru)". Journal of Maps. 12 (5): 1160–1169. Bibcode:2016JMaps..12.1160A. doi:10.1080/17445647.2016.1142479.
• Alcalá, J.; Palacios Estremera, David; Zamorano Orozco, José Juan; Vázquez-Selem, Lorenzo (2011). "Last glacial maximum and deglaciation of Ampato volcanic complex, Southern Peru". Cuaternario y geomorfología: Revista de la Sociedad Española de Geomorfología y Asociación Española para el Estudio del Cuaternario. 25 (1–2): 121–136. ISSN 0214-1744.
• Alcalá-Reygosa, J. (15 September 2017). "El Último Máximo Glaciar local y la deglaciación de la Zona Volcánica Central Andina: El caso del volcán HualcaHualca y del altiplano de Patapampa (Sur de Perú)". Cuadernos de Investigación Geográfica (in Spanish). 43 (2): 649–666. doi:10.18172/cig.3231. ISSN 1697-9540.
• Alcalá-Reygosa, Jesús; Palacios, David; Vázquez-Selem, Lorenzo (August 2017). "A preliminary investigation of the timing of the local last glacial maximum and deglaciation on HualcaHualca volcano - Patapampa Altiplano (arid Central Andes, Peru)". Quaternary International. 449: 149–160. Bibcode:2017QuInt.449..149A. doi:10.1016/j.quaint.2017.07.036.
• Alcalá-Reygosa, J.; Macías, J.L.; Arce, J.L.; Gómez, J.C.; Cisneros Máximo, G.; Layer, P.W.; Zamorano, J.J. (September 2024). "Reconstruction of Hualca Hualca volcano (southern Peru) based on geomorphological and geological evidence and 40Ar/39Ar dating". Geomorphology. 461: 109288. doi:10.1016/j.geomorph.2024.109288.
• Bertonio, P. Ludovico (October 2011). "Transcripción del vocabulario de la lengua Aymara" (PDF). www.illa-a.org. Retrieved 7 January 2025.
• Biggar, John (2020). The Andes - A Guide for Climbers and Skiers (5th ed.). Andes. p. 182. ISBN 978-0-9536087-6-8.
• Boelens, Rutgerd; Gelles, Paul H. (July 2005). "Cultural Politics, Communal Resistance and Identity in Andean Irrigation Development". Bulletin of Latin American Research. 24 (3): 311–327. doi:10.1111/j.0261-3050.2005.00137.x.
• Cacya, Lourdes; Huayhua, Cesar; Meza, Pablo (2018). "Susceptibilidad de la infraestructura Colca–Siguas a los peligros por actividad volcánica del Sabancaya" (PDF). Boletin de la Sociedad Geologica del Perú (in Spanish). ISSN 0079-1091.
• Campos, Néstor (30 December 2015). "Equilibrium Line Altitude Fluctuation on the South West Slope of Nevado Coropuna Since The Last Glacial Maximum (Cordillera Ampato, Perú)". Pirineos. 170: e015. doi:10.3989/Pirineos.2015.170008.
• Ceruti, María Constanza (2013). "Mismi y Huarancante: nevados sagrados del Valle de Colca". Anuario de Arqueología, Rosario (in Spanish). 5. Departamento de Arqueología, Escuela de Antropología, Facultad de Humanidades y Artes: 345–358. hdl:2133/5076. ISSN 1852-8554.
• Chávez, Chávez; Antonio, José (July 2001). "Investigaciones arqueológicas de alta montaña en el sur del Perú". Chungará (Arica). 33 (2): 283–288. doi:10.4067/S0717-73562001000200014. ISSN 0717-7356.
• Ciesielczuk, Justyna; Żaba, Jerzy; Bzowska, Grażyna; Gaidzik, Krzysztof; Głogowska, Magdalena (March 2013). "Sulphate efflorescences at the geyser near Pinchollo, southern Peru". Journal of South American Earth Sciences. 42: 186–193. Bibcode:2013JSAES..42..186C. doi:10.1016/j.jsames.2012.06.016.
• Cruz, L.; Ortega, M.; Anccasi, R.; Apaza, F.; Tapite, E.; Miranda, R.; Masías, P.; Japura, S. (2024). Estudio y monitoreo de la erupción del volcán Sabancaya (Arequipa), periodo 2013 – 2019 (Report). 11Boletín Serie C: Geodinámica e Ingeniería Geológica, 93. INGEMMET. p. 97.
• Gałaś, Andrzej; Paulo, Andrzej; Gaidzik, Krzysztof; Zavala, Bilberto; Kalicki, Tomasz; Churata, Danitza; Gałaś, Slávka; Mariño, Jersey (December 2018). "Geosites and Geotouristic Attractions Proposed for the Project Geopark Colca and Volcanoes of Andagua, Peru". Geoheritage. 10 (4): 707–729. Bibcode:2018Geohe..10..707G. doi:10.1007/s12371-018-0307-y.
• Gałaś, Andrzej; Panajew, Paweł; Cuber, Piotr (2014). "Stratovolcanoes in the Western Cordillera – Polish Scientific Expedition to Peru 2003–2012 reconnaissance research". Geotourism/Geoturystyka. 37 (2): 61. doi:10.7494/geotour.2014.37.61. ISSN 2353-3641.
• Gangui, Alejandro; Guillen, Angel; Pereira, Magdalena (December 2016). "La orientación de las iglesias andinas de la región de Arica y Parinacota, Chile: una aproximación arqueoastronómica". Arqueologia y Sociedad. ISSN 0254-8062.
• Gelles, Paul H. (November 1995). "equilibrium and extraction: dual organization in the Andes". American Ethnologist. 22 (4): 710–742. doi:10.1525/ae.1995.22.4.02a00040.
• Gelles, Paul H. (1996). "The Political Ecology of Irrigation in an Andean Peasant Community". Canals and Communities. University of Arizona Press. pp. 88–116. doi:10.1353/book.101225. ISBN 978-0-8165-4892-7. JSTOR j.ctv2ngx5k7.8.
• Gelles, Paul H. (2000). Water and Power in Highland Peru: The Cultural Politics of Irrigation and Development. Rutgers University Press. ISBN 978-0-8135-2807-6 – via Internet Archive.
• "Nevado Hualca Hualca". GEOnet Names Server. Retrieved 11 August 2017.
• Huanca, Miguel Monroy (1 September 2018). "Migración e inserción de los collaguas y cabanas en el contexto urbano". Revista Puquina (in Spanish). 1 (1): 63–85. ISSN 2710-1649.
• Laime Ajacopa, Teofilo (2007). "Diccionario Bilingüe: Iskay simipi yuyayk'anch: Quechua – Castellano / Castellano – Quechua" (PDF). futatraw.ourproject.org (in Spanish). La Paz, Bolivia.
• Juvigné, Etienne; Thouret, Jean-Claude; Loutsch, Isabelle; Lamadon, Sébastien; Frechen, Manfred; Fontugne, Michel; Rivera, Marco; Dávila, Jasmine; Mariño, Jersy (1 June 2008). "Retombées volcaniques dans des tourbières et lacs autour du massif des Nevados Ampato et Sabancaya (Pérou méridional, Andes Centrales)". Quaternaire. Revue de l'Association française pour l'étude du Quaternaire (in French). 19 (2): 157–173. doi:10.4000/quaternaire.3362. hdl:20.500.12544/669. ISSN 1142-2904.
• MacQueen, Patricia; Delgado, Francisco; Reath, Kevin; Pritchard, Matthew E.; Bagnardi, Marco; Milillo, Pietro; Lundgren, Paul; Macedo, Orlando; Aguilar, Victor; Ortega, Mayra; Anccasi, Rosa; Lazarte Zerpa, Ivonne Alejandra; Miranda, Rafael (May 2020). "Volcano-Tectonic Interactions at Sabancaya Volcano, Peru: Eruptions, Magmatic Inflation, Moderate Earthquakes, and Fault Creep" (PDF). Journal of Geophysical Research: Solid Earth. 125 (5). Bibcode:2020JGRB..12519281M. doi:10.1029/2019JB019281.
• Observatorio Vulcanológico del INGEMMET (August 2017). Evaluación del proceso eruptivo del volcán Sabancaya, región Arequipa (Report) (in Spanish). p. 45. hdl:20.500.12544/811.
• Paerregaard, Karsten (March 2018). "Power in/of/as water: Revisiting the hydrologic cycle in the Peruvian Andes". WIREs Water. 5 (2). Bibcode:2018WIRWa...5E1270P. doi:10.1002/wat2.1270.
• Paerregaard, Karsten (2023). Andean Meltdown: A Climate Ethnography of Water, Power, and Culture in Peru (1st ed.). Berkeley: University of California Press. ISBN 9780520393936.
• Pritchard, M. E.; Simons, M. (February 2004). "An InSAR-based survey of volcanic deformation in the central Andes". Geochemistry, Geophysics, Geosystems. 5 (2). Bibcode:2004GGG.....5.2002P. doi:10.1029/2003GC000610.
• Puma, N.; Macedo, O.; Álvarez, Y.; Finizola, A.; Ramos, D. (26 April 2018). Estudio estructural y del sistema hidrotermal de los volcanes Sabancaya y Hualca-Hualca mediante el método de Potencial Espontáneo (Report) (in Spanish). Arequipa, Perú: VIII Foro Internacional: "Los volcanes y su impacto".
• Puma, N.; Torres, J.; Lazarte, I.; Finizola, A. (2021). "Estudio de la circulación de fluidos y estructura interna del complejo volcánico Ampato-Sabancaya-Hualca Hualca, inferida a partir de datos de potencial espontaneo" (PDF). Boletin de la Sociedad Geologica del Perú (in Spanish). 685. ISSN 0079-1091.
• Ramos Palomino, Domingo A.; Antayhua Vera, Yanet (May 2011). Sismicidad de la región del volcán Sabancaya Arequipa (período 2009-2010) (Report). pp. 49hdl=20.500.12544/1724.
• Reinhard, Johan (1985). "Sacred Mountains: An Ethno-Archaeological Study of High Andean Ruins". Mountain Research and Development. 5 (4): 299–317. doi:10.2307/3673292. ISSN 0276-4741. JSTOR 3673292.
• Rivera Porras, Marco Antonio; Aguilar Contreras, Rigoberto; Manrique Llerena, Nélida (December 2017). Propuesta técnica para la implementación de miradores geoturísticos del volcán Sabancaya, región Arequipa (Report). Instituto Geológico, Minero y Metalúrgico - INGEMMET. p. 29. hdl:20.500.12544/996.
• Rivera, M.; Mariño, J.; Samaniego, P.; Delgado, R.; Manrique, N. (2015). Geología y evaluación de peligros del complejo volcánico Ampato - Sabancaya (Arequipa) (Report). Boletín, Serie C: Geodinámica e Ingeniería Geológica, 61 (in Spanish). INGEMMET. p. 122.
• Shippee, Robert (1932). "Lost Valleys of Peru: Results of the Shippee-Johnson Peruvian Expedition". Geographical Review. 22 (4): 562–581. Bibcode:1932GeoRv..22..562S. doi:10.2307/208814. ISSN 0016-7428. JSTOR 208814.
• Soncco Calsina, Yhon Hidelver; Manrique Llerena, Nélida; Lazarte Zerpa, Ivonne Alejandra (2018). Evaluación de peligros volcánicos de la concesión minera Hualca Hualca I, Caylloma – Arequipa. Informe Técnico; N° A6832. Instituto Geológico, Minero y Metalúrgico - INGEMMET. p. 25. hdl:20.500.12544/1762. {{cite book}}: |work= ignored (help)
• Stensrud, Astrid B. (January 2016). "Climate Change, Water Practices and Relational Worlds in the Andes". Ethnos. 81 (1): 75–98. doi:10.1080/00141844.2014.929597.
• Torres, José Luis; Antayhua Vera, Yanet Teresa; Romero, Gonzalo; Tavera, Hernando; Byrdina, Svetlana (December 2024). Estructura interna del volcán Sabancaya mediante el método de magnetotelúrica (pdf) (Report) (in Spanish). Instituto Geofísico del Perú. hdl:20.500.12816/5655.
• Tyc, Andrzej; Gaidzik, Krzysztof; Ciesielczuk, Justyna; Masías, Pablo; Paulo, Andrzej; Postawa, Adam; Żaba, Jerzy (April 2022). "Thermal springs and active fault network of the central Colca River basin, Western Cordillera, Peru". Journal of Volcanology and Geothermal Research. 424: 107513. Bibcode:2022JVGR..42407513T. doi:10.1016/j.jvolgeores.2022.107513.
• Zavala Carrión, Bilberto Luis; Mariño Salazar, Jersy; Lacroix, Pascal; Taipe Maquerhua, Edu Luis; Tatard, Lucile; Benavente Escobar, Carlos Lenin; Pari Pinto, Walter; Macedo Franco, Luisa Diomira; Peña Laureano, Fluquer; Paxi Zamalloa, Rosario; Delgado Madera, Gabino Fabrizio; Fidel Smoll, Lionel; Vílchez Mata, Manuel Salomón; Villacorta Chambi, Sandra Paula; Ochoa Zubiate, Magdie Beltzadit; Luque Poma, Griselda; Rosado Seminario, Malena; Antayhua Vera, Yanet; Núñez Juárez, Segundo; Vásquez Cardeña, Shianny; Wathelet, Marc; Guillier, Bertrand; Bondoux, Francis; Norabuena, Edmundo; Gómez Avalos, Juan Carlos (April 2012). Evaluación de la seguridad física del distrito de Maca: Estudios geológicos, geofísicos y monitoreo de movimientos en masa. Provincia de Caylloma, región Arequipa (Report). Informe Técnico; N° A6628. Instituto Geológico Minero y Metalúrgico - INGEMMET & L'Institut de recherche pour le développement - IRD. hdl:20.500.12544/1494.
• Zavala, B.; Churata, D.; Varela, F.; Benavente, C.; Mariño, J. (July 2015). Propuesta de geoparque Cañón del Colca y Valle de los Volcanes de Andagua. 1 Simposio de Geoparques, Arequipa. Lima: INGEMMET. pp. 56–61.

• Stratovolcanoes of Peru
• Mountains of Arequipa Region
• Andean Volcanic Belt
• Six-thousanders of the Andes