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subduction

subduction

4 8.6
One part of Earth's outer shell is pushed under another part into the hot rock below
  • noun
  • /səbˈdʌkʃən/
  • Specialized
translation icon : subducción
  • (a) As the Juan de Fuca and North American plates converge, strains gradually accumulate along the Cascadia subduction zone.
  • subduction zone

Because cities are coastal, a lot of the world's urban people live near the coastline, and that's where the subduction zones are in California.

Examples

  • I guess that would make the eastern part of the Gulf of Mexico a sort of subduction zone.

    Blog text (14)
  • Great subduction-zone earthquakes seldom occur under such conditions, says Caltech seismologist Kanamori.

    Academic text (2006)
  • A process called subduction forces the North American plate down towards the earth's core.

  • The process of subduction that created the island and now threatens to destroy it - never stops.

  • Generally, tsunamis occur at large subduction zones, as in the Caribbean region.

    Academic text (1993)
  • Because cities are coastal, a lot of the world's urban people live near the coastline, and that's where the subduction zones are in California.

  • The epicenter is only 70 miles off the coast of Oregon in what's called the Cascadia Subduction Zone.

  • As the Indian plate gets dragged into the subduction zone, it pulls down Sumatra, which flexes.

    Academic text (2006)
  • A process called subduction forces the North American plate down towards the earth's core.

  • Over the next 200 million years, the subduction zones will suck in almost all the sea floor that exists today consuming everything on it.

Surface Forms

subduction singular
subductions plural

Morphology

subduction = subduct (semi-transparent) = sub + duct + ion

Formation from the verb 'subduct' to the noun with -ion is a standard and semantically direct nominalization.

Etymology

Subduction comes from the Latin parts sub- 'under' and ducere 'to lead', the same root you see in words like conduct and duct. So subduction literally means 'lead under', which explains the geological process where one crust plate is forced under another.