Plate Tectonics, the Wilson Cycle, and Mantle Plumes: Geodynamics from the Top
نویسندگان
چکیده
منابع مشابه
The generation of plate tectonics from mantle convection
In the last decade, significant progress has been made toward understanding how plate tectonics is generated from mantle dynamics. A primary goal of plate-generation studies has been the development of models that allow the top cold thermal boundary layer of mantle convection, i.e. the lithosphere, to develop broad and strong plate-like segments separated by narrow, weak and rapidly deforming b...
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We present an overview of the relation between mantle dynamics and plate tectonics, adopting the perspective that the plates are the surface manifestation, i.e., the top thermal boundary layer, of mantle convection. We review how simple convection pertains to plate formation, regarding the aspect ratio of convection cells; the forces that drive convection; and how internal heating and temperatu...
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The gravitational pull of subducted slabs is thought to drive the motions of Earth's tectonic plates, but the coupling between slabs and plates is not well established. If a slab is mechanically attached to a subducting plate, it can exert a direct pull on the plate. Alternatively, a detached slab may drive a plate by exciting flow in the mantle that exerts a shear traction on the base of the p...
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A •nodel of mantle convection which generates plate tectonics requires strain rateor stress-dependent rheology in order to produce strong platelike flows with weak margins as well as strike-slip deformation and plate spin (i.e., toroidM motion). ttere, we exnploy a simple model of source-sink driven surface flow •o determine the form of such a theology that is appropriate for Earth's present-da...
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ژورنال
عنوان ژورنال: Annual Review of Earth and Planetary Sciences
سال: 2011
ISSN: 0084-6597,1545-4495
DOI: 10.1146/annurev-earth-040809-152521