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subduction
[suhb-duhk-shuhn]
noun
an act or instance of subducting; subtraction or withdrawal.
Geology.the process by which collision of the earth's crustal plates results in one plate's being drawn down or overridden by another, localized along the juncture subduction zone of two plates.
subduction
/ əˈʌʃə /
noun
the act of subducting, esp of turning the eye downwards
geology the process of one tectonic plate sliding under another, resulting in tensions and faulting in the earth's crust, with earthquakes and volcanic eruptions
subduction
A geologic process in which one edge of one lithospheric plate is forced below the edge of another. The denser of the two plates sinks beneath the other. As it descends, the plate often generates seismic and volcanic activity (from melting and upward migration of magma) in the overriding plate.
Compare obduction
51Թ History and Origins
Origin of subduction1
Example Sentences
Those are the findings of a new study that examined the repercussions of a massive earthquake on the Cascadia subduction zone, which stretches from Northern California up to Canada’s Vancouver Island.
A particularly chilling prospect for Northern California, as well as Oregon and Washington, would be a magnitude 9 earthquake along the Cascadia subduction zone off the coast.
A nightmare scenario for Northern California, as well as Oregon and Washington, would be a magnitude 9 earthquake along the Cascadia subduction zone off the coast.
Driven by the erupting lava, plates scrape past and collide with each other, and they can also dive beneath other plates and into the planet’s interior in a process called subduction.
The upgrade also would improve warnings for the Pacific Northwest and California’s North Coast, which are threatened by tsunamis from quakes along the Cascadia subduction zone.
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