subduction (redirected from subductal)

sub·duc·tion  (sb-dkshn)

n.

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

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

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sub·duct v.

sub·ductal (-tl) adj.

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subduction [səbˈdʌkʃən]

n

1. (Life Sciences & Allied Applications / Physiology) the act of subducting, esp of turning the eye downwards

2. (Earth Sciences / 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

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subduction  (sb-dkshn)

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.

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subduct verb

Thesaurus

Noun

1.

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