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Nature 451, 899-900 (21 February 2008) | doi:10.1038/451899a; Published online 20 February 2008
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Geophysics: Slab sliding away
Scott King1
Abstract
Does material that is subducted into Earth's interior at plate boundaries penetrate very far down? A model that links subsurface dynamics with the motion of the plates above provides a fresh approach to the question.
Much of the cold, brittle material at Earth's surface slides back down into the underlying mantle at subduction zones, where one tectonic plate dives beneath a second, overlying plate. By mapping the centres of energy of deep earthquakes1, one can trace this subducting material as it moves down from the surface to depths of around 700 kilometres.
- Scott King is in the Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061, USA.
Email: sdk@vt.edu
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