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A geologic process in which one edge of one crustal plate is forced below the edge of another.

[French, from Latin subductus, past participle of subdūcere, to draw away from below : sub-, sub- + dūcere, to lead; see deuk- in Indo-European roots.]

sub·duct′ v.
sub·duc′tal (-təl) adj.


1. (Physiology) the act of subducting, esp of turning the eye downwards
2. (Geological Science) 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


(səbˈdʌk ʃən)

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 (subduc′tion zone`) of two plates.
[1965–70; < French subduction (1951); see subduct, -ion]


The sinking of one lithospheric plate’s leading edge below another lithospheric plate. This occurs below deep ocean trenches.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.subduction - a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
geologic process, geological process - (geology) a natural process whereby geological features are modified
References in classic literature ?
Or Nature faild in mee, and left some part Not proof enough such Object to sustain, Or from my side subducting, took perhaps More then enough; at least on her bestow'd Too much of Ornament, in outward shew Elaborate, of inward less exact.
The valuable information obtained from this will help to paint a fuller picture of the life cycle of strategic metals from their origins inside a subducting tectonic plate to their arrival on the seafloor.
The entire archipelago is surrounded by subducting plates as manifested by the trenches that are related to volcano formation, the Phivolcs, an agency of the Department of Science and Technology, said in its official web site.
A moderate level of heat flux (20-120mW/m) has been observed from the subducting Pacific plate across the Japan Trench (between 142[degrees]E and 146[degrees]E) due to upward heat transfer from the plate.
At the earliest, Adakite refers to the intermediate-acidic igneous rock with unique geochemical characteristics, which is formed by young subducting oceanic crust melting under eclogite facies condition.
The Cascadia Subduction Zone (CSZ) is the primary regional fault system in the Pacific Northwest and was created by the oceanic "Juan de Fuca Plate" subducting beneath the continental "North American Plate.
Note that we live on extraordinarily unstable geological formations on which we are very highly likely to experience large abrupt movements - earthquakes - as the extreme stresses in the colliding/subducting Pacific Northwest geologic formations are released (for example, the Juan de Fuca plate is subducting under the North American plate).
They concluded that the majority of adjustments on the Java section of the subducting plate were being made aseismically, and by minor shocks within the plates, and that Java-Bali-Lombok should therefore 'be considered to have low seismic potential'.
The structure of the Costa Rican subduction zone is heavily influenced by the heterogeneity of the subducting Cocos plate.
But as we know that tectonically Pakistan lies in an active collision zone and Indo-Pakistan plate is subducting under Island Arc along Main Mantle Thrust which is further subducting under Eurasian plate.
Specifically, they reveal a link between seamounts and earthquakes, as seamounts are formerly active volcanoes and therefore generally are located near tectonically active plate boundaries, midocean ridges, and subducting zones.
Seismic waves travel slower in these fault zones than in the rest of the subducting plate because the sea water that percolated through the faults reacted with the oceanic rocks to form serpentinite -- a mineral that contains water.