Fire Earth

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Archive for September 28th, 2010

Nazca Plate Subduction Probably Accelerating

Posted by feww on September 28, 2010

More Megaquakes, More Volcanic Activity Along Atacama Trench, Chile Ridge

NAZCA Plate. Source: NOAA

The Nazca Plate, an oceanic tectonic plate, located in the eastern Pacific Ocean basin off the coast of South America (Peru and Chile), subducts the South American Plate along the Peru-Chile Trench.  Existing as an independent plate, the Nazca Plate interacts with the Pacific Plate to the west and the Antarctic Plate to the south via the East Pacific Ridge and the Chile Ridge.

Peru-Chile Trench.
Source: NOAA

Chile Ridge. Source: NOAA

Peteroa Volcano,  part of the Andean Planchón-Peteroa Volcanic complex on the border between Chile and Argentina, spewed  ash on September 26, 2010, following an eruption on September 6. The natural-color satellite image above was captured by ALI aboard EO-1. Source: NASA E/O. Click image to enlarge. Download large image (4 MB, JPEG)

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    Posted in Andean orogeny, earthquake, Nazca Plate, Peteroa Volcano, Planchón-Peteroa Volcanic complex, volcano | Tagged: , , | Leave a Comment »