SUBDUCTION ZONES

@article{Stern2002SUBDUCTIONZ,
  title={SUBDUCTION ZONES},
  author={Robert J. Stern},
  journal={Reviews of Geophysics},
  year={2002},
  volume={40}
}
  • R. Stern
  • Published 1 December 2002
  • Geology
  • Reviews of Geophysics
Subduction zones are where sediments, oceanic crust, and mantle lithosphere return to and reequilibrate with Earth's mantle. Subduction zones are interior expressions of Earth's 55,000 km of convergent plate margins and are the geodynamic system that builds island arcs. Excess density of the mantle lithosphere in subduction zones provides most of the power needed to move the plates while inducing convection in the overriding mantle wedge. Asthenospheric mantle sucked toward the trench by the… 
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References

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TLDR
It is shown that geochemical, seismological and heat-flow data are all consistent with whole-mantle convection provided that the observed heterogeneities are remnants of recycled oceanic and continental crust that make up about 16 and 0.3 per cent, respectively, of mantle volume.
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