Nazca Plate

Nazca Plate
The Nazca Plate
TypeMinor
Approximate area15,600,000 km2[1]
Movement1north-east
Speed140-53mm/year
FeaturesPacific Ocean
1Relative to the African Plate

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. The ongoing subduction, along the Peru–Chile Trench, of the Nazca Plate under the South American Plate is largely responsible for the Andean orogeny. The Nazca Plate is bounded on the west by the Pacific Plate and to the south by the Antarctic Plate through the East Pacific Rise and the Chile Rise respectively. The movement of the Nazca Plate over several hotspots has created some volcanic islands as well as east-west running seamount chains that subduct under South America. Nazca is a relatively young plate both in terms of the age of its rocks and its existence as an independent plate having been formed from the break-up of the Farallon Plate about 23 million years ago. The oldest rocks of the plate are about 50 million years old.[2]

Boundaries

East Pacific and Chile Rise

A triple junction, the Chile Triple Junction,[3] occurs on the seafloor of the Pacific Ocean off Taitao and Tres Montes Peninsula at the southern coast of Chile. Here three tectonic plates meet: the Nazca Plate, the South American Plate, and the Antarctic Plate.

Peru–Chile Trench

The eastern margin is a convergent boundary subduction zone under the South American Plate and the Andes Mountains, forming the Peru–Chile Trench. The southern side is a divergent boundary with the Antarctic Plate, the Chile Rise, where seafloor spreading permits magma to rise. The western side is a divergent boundary with the Pacific Plate, forming the East Pacific Rise. The northern side is a divergent boundary with the Cocos Plate, the Galapagos Rise.

The subduction of the Nazca plate under southern Chile has a history of producing massive earthquakes, including the largest ever recorded on earth, the moment magnitude 9.5 1960 Valdivia earthquake.

Other Languages
العربية: صفيحة نازكا
azərbaycanca: Naska plitəsi
беларуская: Пліта Наска
Boarisch: Nazca-Blattn
čeština: Deska Nazca
Deutsch: Nazca-Platte
eesti: Nazca laam
español: Placa de Nazca
Esperanto: Plato Nazca
euskara: Nazcako plaka
français: Plaque de Nazca
한국어: 나스카판
Bahasa Indonesia: Lempeng Nazca
italiano: Placca di Nazca
עברית: לוח נסקה
lietuvių: Naskos plokštė
magyar: Nazca-lemez
Nederlands: Nazcaplaat
polski: Płyta Nazca
português: Placa de Nazca
русский: Плита Наска
Simple English: Nazca Plate
slovenčina: Platňa Nazca
srpskohrvatski / српскохрватски: Naskanska ploča
svenska: Nazcaplattan
Türkçe: Nazca levhası
українська: Плита Наска
Tiếng Việt: Mảng Nazca