Geography
The Andes can be divided into three sections:
- The Southern Andes (south of Llullaillaco) in Argentina and Chile;
- The Central Andes in Ecuador, Peru and Bolivia
- The Northern Andes (north of the Nudo de Pasto) in Venezuela and Colombia which consist of three parallel ranges, the western, central, and eastern ranges. (The cordillera occidental, central, and oriental).
In the northern part of the Andes, the isolated Sierra Nevada de Santa Marta range is often considered to be part of the Andes. The term cordillera comes from the Spanish word "cuerda", meaning "rope". 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 Leeward Antilles islands Aruba, Bonaire, and Curaçao, which lie in the Caribbean Sea off the coast of Venezuela, were 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.
Read more about this topic: Geology Of The Andes
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