EXHUMATION OF METAMORPHIC COMPLEXES: BASIC MECHANISMS
E.V. Sklyarov
Institute of the Earth's Crust, Siberian Branch of the RAS,
128 ul. Lermontova, Irkutsk, 664033, Russia
Keywords: Metamorphism, exhumation, tectonics
Pages: 68-72
Subsection: TECTONICS, GEODYNAMICS, AND PALEOCLIMATE
Abstract
Metamorphic complexes become exposed at the surface by three basic exhumation mechanisms (i) tectonic transport by return flow in accretionary wedges, overthrusting, and extrusion tectonics in convergent orogens, (ii) tectonic erosion (unroofing) under large-scale crustal extension, and (iii) diapirism (buoyant rise of low-density lower crust or subducted upper crust).
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