subduction


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to subduction: Subduction zone

subduction

[səb′dək·shən]
(geology)
The process by which one crustal block descends beneath another, such as the descent of the Pacific plate beneath the Andean plate along the Andean Trench.
References in periodicals archive ?
As understood from the seismotectonic of Sumatera, the seismicity of Sumatera is controlled by the subduction zone.
Unraveling the origin of fresher-than-seawater fluids is of great importance to understanding subduction zone hydrogeochemistry.
Scientists are using GPS technology to track the movement of land above the subduction zone.
They suggest that the connection may be due to the physical properties of fracture zones, which result in the subduction fault areas becoming 'locked' and thus capable of accumulating stress over long periods of time, thereby increasing the risk of major earthquake activity.
Si l'histoire de la subduction se prolonge, le contexte d'un systeme d'iles en arc peut alterner episodiquement d'un regime en compression a un regime en extension.
The segment of the Andes, located west of Peru, is the result of a subduction process of the Nazca (NP) plate beneath the South American (SA) plate.
However, boninites contain the chemical imprint of a source region invaded by fluids derived from a subduction zone (for example, they contain 10 times more water than mid-ocean ridge lavas).
In a subduction zone, the location where two tectonic plates meet and one is forced underneath the other, large sections of the Earth's crust might get consumed.
A major quake in the Cascadia Subduction Zone off the Northwest coast would have an expected magnitude of 9.0, equal to the 2011 earthquake that triggered a deadly and destructive tsunami in Japan.
Scientists have long thought diamonds might form in subduction zones, where one tectonic plate plunges under another and sinks hundreds of kilometers into the mantle.
The Nicoya Peninsula in Costa Rica is one of the few places where land sits atop the portion of a subduction zone where Earth's greatest earthquakes take place.
The joint where the Pacific and North American plates meet forms what is known as a 'subduction' zone, with the North American plate riding over the edge of the Pacific plate.