Huambo volcanic field

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Coordinates: 15°50′S72°08′W / 15.83°S 72.13°W / -15.83; -72.13 [1]

Geographic coordinate system Coordinate system

A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.


Huambo volcanic field is a volcanic field in Peru. Andahua-Orcopampa lies north-northeast and Sabancaya east of Huambo, [1] east of the Rio Colca. [2] The town of Huambo lies between the two fields. [3]

Volcanic field Area of the Earths crust prone to localized volcanic activity

A volcanic field is an area of the Earth's crust that is prone to localized volcanic activity. They usually contain 10 to 100 volcanoes such as cinder cones and are usually in clusters. Lava flows may also occur. They may occur as a monogenetic volcanic field or a polygenetic volcanic field.

Peru republic in South America

Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the west by the Pacific Ocean. Peru is a megadiverse country with habitats ranging from the arid plains of the Pacific coastal region in the west to the peaks of the Andes mountains vertically extending from the north to the southeast of the country to the tropical Amazon Basin rainforest in the east with the Amazon river.

Andagua volcanic field mountain

The Andagua volcanic field is a volcanic field in southern Peru. Located between the Coropuna and Sabancaya volcanoes, it is formed from a number of lava domes and scoria cones that have generated lava flows. Activity ranges from the early Pleistocene until historical times.

The northern part of the field was active 700 BCE ± 50 years, forming a large lava flow field and a cinder cone Cerro Keyocc. The southern part of the field contains other cinder cones and lava flows. Some may be of Holocene age. [1] Lava flows are a few 10 metres (33 ft) thick. Four among the volcanoes of the southern field are Marbas Grande, Marbas, Marbas Chico I and Marbas Chico II. [2] The formation of these fields may have been influenced by magma ascent along deep fault systems. [4]

In geology, a fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock-mass movement. Large faults within the Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes.

Trachyandesite is the major eruption product of Huambo. [1] The magmas forming this field formed in deep magma chambers with little modification in shallower magma chambers. [2] Basement lava flows have been dated at 1.05±0.04 mya. [3] The Huambo field is located within the Arequipa crustal domain. [4]

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Cima volcanic field volcanic field in San Bernardino County, California

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Ubinas is a stratovolcano in the Moquegua Region of southern Peru, 60 kilometres (37 mi) east of the city of Arequipa. Part of the Central Volcanic Zone of the Andes, it is 5,672 metres (18,609 ft) above sea level. The volcano's summit is cut by a 1.4-kilometre (0.87 mi) wide and 150-metre (490 ft) deep 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 geologic history of Ubinas.


  1. 1 2 3 4 "Huambo". Global Volcanism Program . Smithsonian Institution.
  2. 1 2 3 Delacour, Adélie; Gerbe, Marie-Christine; Thouret, Jean-Claude; Wörner, Gerhard; Paquereau-Lebti, Perrine (17 November 2006). "Magma evolution of Quaternary minor volcanic centres in southern Peru, Central Andes". Bulletin of Volcanology. 69 (6): 581–608. doi:10.1007/s00445-006-0096-z.
  3. 1 2 Andean Volcanism: Nevado Hualca Hualca Volcano, Southern Peru, and El Reventador Volcano, Ecuador. ProQuest. 2008. pp. 34–35. ISBN   978-0-549-36997-4.
  4. 1 2 Mamani, M.; Worner, G.; Sempere, T. (25 September 2009). "Geochemical variations in igneous rocks of the Central Andean orocline (13 S to 18 S): Tracing crustal thickening and magma generation through time and space". Geological Society of America Bulletin. 122 (1–2): 162–182. doi:10.1130/B26538.1.