Thermal structure due to solid-state flow in the mantle wedge beneath arcs

作者: Peter B. Kelemen , Jennifer L. Rilling , E. M. Parmentier , Luc Mehl , Bradley R. Hacker

DOI: 10.1029/138GM13

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摘要: We summarize petrological and seismic constraints on the temperature of arc lower crust shallow mantle, show that published thermal models are inconsistent with these constraints. then present incorporating temperature-dependent viscosity, using widely accepted values for activation energy asthenospheric viscosity. These produce thin boundary layers in wedge corner, an overall structure is consistent other Some predict partial melting subducted sediment and/or basalt, even though we did not incorporate effect shear heating obtain results subduction 50 Myr old oceanic at 60 km/Myr, 80 suggesting may be restricted to slow young crust.

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