Published via the yank Geophysical Union as a part of the Geophysical Monograph sequence, quantity 121.
The new worldwide tectonics that emerged 3 many years in the past profoundly replaced our view of the Earth and its evolution. even if the speculation of plate tectonics offers a kinematic description of a lot of Earth's floor motions, our dynamical figuring out continues to be incomplete and unsatisfactory in lots of methods. Key final concerns contain the mechanics of plate obstacles and intraplate deformation, the relation among plate-scale dynamics and hotspot volcanism, vertical floor motions (dynamic topography) linked to subduction, and the starting place of the plate-tectonic variety of convection itself. The earlier 20 years have obvious rather regular growth on a couple of those difficulties, spurred largely via the appearance of three-D seismic imaging of the Earth's inside. extra lately, advances in excessive functionality computing have supplied long-needed three-D geodynamic modeling instruments which are yielding new insights into the relation among mantle convection and plate tectonics, and the translation of seismic heterogeneity structure.
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