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词汇 NVZ
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NVZ

英语百科

Andean Volcanic Belt

(重定向自NVZ)
Map of the volcanic arcs in the Andes, and subducted structures affecting volcanism
Map of the major Colombian (left) and Ecuadorian (right) volcanoes
Map showing the relief of Bolivia


 

Nevados de Chillán (2003)
 Copahue (2000)
 Lonquimay (1990)
 Llaima (2008-2009)
 Villarrica (1990-2010)
 Chaitén (2008-2010)
 Hudson (1991)


Map of the volcanoes of the Southern Volcanic Zone that erupted in the 1990-2010 period.

The Andean Volcanic Belt is a major volcanic belt along the Andean cordillera in Argentina, Bolivia, Chile, Colombia, Ecuador and Peru. It formed as a result of 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. While some differences can be explained by which volcanic zone a volcano belongs to, there are significant differences within volcanic zones and even between neighboring volcanoes. Despite being a type location for calc-alkalic and subduction volcanism, the Andean Volcanic Belt has a large range of volcano-tectonic settings, such as rift systems and extensional zones, transpressional faults, subduction of mid-ocean ridges and seamount chains apart from a large range on crustal thicknesses and magma ascent paths, and different amount of crustal assimilations.

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