Citizendia
Your Ad Here

     The Nacza plate, shown in light blue
     The Nacza plate, shown in light blue

The Nazca Plate, named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. For the archaeological site see Nazca Lines. For the culture it belonged to see Nazca culture. Peru (Perú Piruw Piruw officially the Republic of Peru ( reˈpuβlika del peˈɾu is a country in western South America. Plate tectonics (from Greek τέκτων tektōn "builder" or "mason" describes the large scale motions of Earth 's Lithosphere The Pacific Ocean is the largest of the Earth 's Oceanic divisions South America is a Continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a

The eastern margin is a convergent boundary subduction zone under the South American Plate and the Andes Mountains, forming the Peru-Chile Trench. In Plate tectonics, a convergent boundary – also known as a convergent plate boundary or a destructive plate boundary – is an actively deforming region In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The South American Plate is a Tectonic plate covering the Continent of South America and extending eastward to the Mid-Atlantic Ridge. The Andes form the world's longest exposed Mountain range. They lie as a continuous chain of highland along the western coast of South America. The Peru-Chile Trench, also known as the Atacama Trench, is an Oceanic trench in the eastern Pacific Ocean, about 160 kilometers (100 mi off the coast The southern side is a divergent boundary with the Antarctic Plate, the Chile Rise, where seafloor spreading permits magma to rise. In Plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a The Antarctic Plate is a Tectonic plate covering the Continent of Antarctica and extending outward under the surrounding Oceans The Antarctic The Chile Rise is an Oceanic ridge, a Tectonic divergent plate boundary between the Nazca and Antarctic Plates Its eastern end is the Seafloor spreading occurs at Mid-ocean ridges where new Oceanic crust is formed through volcanic activity and then gradually moves away from the ridge Magma (Plurals magmas and magmata) is molten rock that sometimes forms beneath the surface of the Earth (or any other Terrestrial planet The western side is a divergent boundary with the Pacific Plate, forming the East Pacific Rise. The Pacific Plate is an oceanic Tectonic plate beneath the Pacific Ocean. The East Pacific Rise is a Mid-oceanic ridge, a divergent tectonic plate boundary located along the floor of the Pacific Ocean. The northern side is a divergent boundary with the Cocos Plate, the Galapagos Rise. The Cocos Plate is an oceanic Tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides The Galapagos Rise is a Divergent boundary located between the South American coast and the Triple junction of the Nazca Plate, the A triple junction occurs at the northwest corner of the plate where the Nazca, the Cocos, and the Pacific plates all join off the coast of Colombia. A triple junction is the point where the boundaries of three Tectonic plates meet Colombia (kəˈlʌmbɪə officially the Republic of Colombia () is a country in northwestern South America.

A second junction, the Chile Triple Junction, occurs at the southwest corner at the intersection with the Nazca, the Pacific, and the Antarctic plates off the coast of southern Chile. The Chile Triple Junction (or Chile Margin Triple Junction) is a geologic Triple junction located on the seafloor of the Pacific Ocean off Taitao Chile, officially the Republic of Chile ( Spanish:) is a country in South America occupying a long and narrow Coastal strip wedged between the At each of these triple junctions an anomalous microplate exists, the Galapagos Microplate at the northern junction and the Juan Fernandez Microplate at the southern junction. The Easter Island Microplate is a third microplate that is located just north of the Juan Fernandez Microplate and lies just west of Easter Island.

Yet another triple junction, the Chile Triple Junction,[1] occurs on the seafloor of the Pacific Ocean off Taitao and Tres Montes Peninsula at the southern coast of Chile. The Chile Triple Junction (or Chile Margin Triple Junction) is a geologic Triple junction located on the seafloor of the Pacific Ocean off Taitao The Pacific Ocean is the largest of the Earth 's Oceanic divisions The Taitao Peninsula ( Spanish: "Península de Taitao" is a westward projection of the mainland of Chile, with which it is connected by the narrow Isthmus The Tres Montes Peninsula ( Spanish: "Península Tres Montes" is a south-westward projection of Taitao Peninsula which in turn connects to the mainland of Chile, officially the Republic of Chile ( Spanish:) is a country in South America occupying a long and narrow Coastal strip wedged between the Here three tectonic plates meet: the Nazca Plate, the South American Plate, and the Antarctic Plate. This article discusses the geologic usage for the philosophical or architectural usage see Architectonics ' Or see Plate tectonics. The South American Plate is a Tectonic plate covering the Continent of South America and extending eastward to the Mid-Atlantic Ridge. The Antarctic Plate is a Tectonic plate covering the Continent of Antarctica and extending outward under the surrounding Oceans The Antarctic This triple junction is unusual in that it consists of a mid-oceanic ridge, the Chile Rise, being subducted under the South American Plate at the Peru-Chile Trench. A mid-ocean ridge or mid-oceanic ridge is an underwater Mountain range typically having a valley known as a Rift running along its axis formed by The Chile Rise is an Oceanic ridge, a Tectonic divergent plate boundary between the Nazca and Antarctic Plates Its eastern end is the In Geology, a subduction zone is an area on Earth where two tectonic plates meet and move towards one another with one sliding underneath the other The Peru-Chile Trench, also known as the Atacama Trench, is an Oceanic trench in the eastern Pacific Ocean, about 160 kilometers (100 mi off the coast This triple junction has been considered to be related to the moment magnitude 9. TalkMoment magnitude scale#Real world examples please.--> The moment magnitude scale 5, 1960 megathrust earthquake known as the Great Chilean Earthquake. A megathrust earthquake occurs at Subduction zones (destructive plate boundaries where one Tectonic plate is forced under (subducts another The 1960 Valdivia earthquake or Great Chilean Earthquake (Gran terremoto de Valdivia of 22 May, 1960 is the most powerful Earthquake ever

Luckily, very few islands are there to suffer the earthquakes that are a result of complicated movements at these junctions. Juan Fernández Islands is an exception. The Juan Fernández Islands is a sparsely inhabited island group reliant on tourism and fishing in the South Pacific Ocean, situated about 667 km off the coast of Chile

The Carnegie Ridge is a 1350-km-long and up to 300-km-wide 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 American with the rest of the Nazca Plate.

The absolute motion of the Nazca Plate has been calibrated at 3. 7 cm/yr east motion (88°), some of the fastest absolute motion of any tectonic plate. The subducting Nazca Plate, which exhibits unusual flat-slab subduction, is tearing as well as deforming as it is subducted (Barzangi and Isacks) has formed, and continues to form the volcanic Andes Mountain Range. Plate tectonics and hotspots Divergent plate boundaries At the The Andes form the world's longest exposed Mountain range. They lie as a continuous chain of highland along the western coast of South America. Deformation of the Nazca Plate even affects the geography of Bolivia, far to the east (Tinker et al. The Republic of Bolivia (República de Bolivia) named after Simón Bolívar, is a Landlocked country in central South America. ).

The precursor of the Nazca Plate and the Cocos Plate to its north was the Farallon Plate, which split in late Oligocene times, about 22. The Farallon Plate was an ancient Oceanic plate, which began Subducting under the west coast of the North American Plate &mdash then located in modern The Oligocene is a geologic epoch of the Paleogene period and extends from about 33 8 My, a date arrived at by interpreting magnetic anomalies. Earth 's magnetic field (and the surface magnetic field) is approximately a Magnetic dipole, with one pole near the North pole (see

Notes

  1. ^ http://www.nsm.buffalo.edu/courses/gly481-581/McGuire05_2.pdf Tectonics of South America: Chile Triple Junction

References

© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic