Towards a realistic simulation of plate margins in mantle convection

Details Towards a realistic simulation of plate margins in mantle convection Towards a realistic simulation of plate margins in mantle convection

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..981z&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 8, p. 981-984

Mathematics

Logic

30

Convection, Earth Mantle, Euler-Lagrange Equation, Finite Element Method, Geological Faults, Plates (Tectonics), Dynamic Models, Mathematical Models, Time Dependence

Scientific paper

We have incorporated faults as plate margins into time-dependent mantle convection models by using a mixed Eulerian and Lagrangian finite element formulation. Plate margins in our models can migrate dynamically in response to variations in mantle buoyancy, and this enables us to study the dynamics of mantle and plates including changes in plate size. Convection models in a cylindrical geometry with such a faulted converging margin, non-Newtonian rheology, and continents that the converging margin tends to migrate oceanward. The oceanward trench migration leads to an increase in the size of the overriding continental plate.

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