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Map showing the location of Nazca Ridge off the west coast of Peru. The Nazca Ridge is a submarine ridge, located on the Nazca plate off the west coast of South America.This plate and ridge are currently subducting under the South American plate at a convergent boundary known as the Peru-Chile Trench at approximately 7.7 cm (3.0 in) per year. [1]
The Carnegie Ridge is a 1,350-kilometre-long (840 mi) and up to 300-kilometre-wide (190 mi) feature on the ocean floor of the northern Nazca plate that includes the Galápagos archipelago at its western end. It is being subducted under South America with the rest of the Nazca plate.
South America, Atlantic Ocean 1 Relative to the African plate The South American plate is a major tectonic plate which includes the continent of South America as well as a sizable region of the Atlantic Ocean seabed extending eastward to the African plate , with which it forms the southern part of the Mid-Atlantic Ridge .
Map of the volcanic arcs in the Andes, and subducted structures affecting volcanism. The Andean Volcanic Belt is a major volcanic belt along the Andean cordillera in Argentina, Bolivia, Chile, Colombia, Ecuador, and Peru. It is formed as a result of subduction of the Nazca plate and Antarctic plate underneath the South American plate.
Brazil is the largest country in South America, covering a little less than half of the continent's land area and encompassing around half of the continent's population. [26] The remaining countries and territories are divided among four subregions: the Andean states, Caribbean South America, The Guianas, and the Southern Cone. [27]
A team of oceanographers led by Schmidt Ocean Institute have discovered and mapped a new seamount on the Nazca Ridge 900 miles off the coast of Chile.
The trench is also a part of the Chile triple junction, an unusual junction that consists of a mid-oceanic ridge and the Chile Rise being subducted under the South American plate at the Peru–Chile Trench. Two seamount ridges within the Nazca plate enter the subduction zone along this trench: the Nazca Ridge and the Juan Fernández Ridge.
A sovereign state is a political association with effective sovereignty over a population for whom it makes decisions in the national interest. [3] According to the Montevideo Convention, a state must have a permanent population, a defined territory, a government, and the capacity to enter into relations with other states. [4]