Mantle Convection with Plates and Mobile, Faulted Plate Margins

Details Mantle Convection with Plates and Mobile, Faulted Plate Margins Mantle Convection with Plates and Mobile, Faulted Plate Margins

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sci...267..838z&link_type=abstract

Science, Volume 267, Issue 5199, pp. 838-843

Computer Science

120

Scientific paper

A finite-element formulation of faults has been incorporated into time-dependent models of mantle convection with realistic rheology, continents, and phase changes. Realistic tectonic plates naturally form with self-consistent coupling between plate and mantle dynamics. After the initiation of subduction, trenches rapidly roll back with subducted slabs temporarily laid out along the base of the transition zone. After the slabs have penetrated into the lower mantle, the velocity of trench migration decreases markedly. The inhibition of slab penetration into the lower mantle by the 670-kilometer phase change is greatly reduced in these models as compared to models without tectonic plates.

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