1. Introduction The convergence plate margins, where lithospheric plates move each other and collide, are the most intense areas of magmatism, tectonism and metamorphism. The development of slab windows beneath conver...1. Introduction The convergence plate margins, where lithospheric plates move each other and collide, are the most intense areas of magmatism, tectonism and metamorphism. The development of slab windows beneath convergent margins, originally defined by Dickinson and Snyder （1979）, is one of the essential mechanisms of subduction- related tectonics. A slab window is a gap that forms in a subducting plate when a mid-oceanic ridge reaches a trench and is subducted. The opening of a slab window causes various geological processes including magmatism （e.g. Thorkelson, 1996; Kinoshita, 2002; Bradley et al., 2003; Thorkelson and Breitsprecher, 2005; Zhang et al., 2010; Eyuboglu et al., 2011a）, changes in plate kinematics and deformation （Hibhard and Karig, 1990）, mineralization （Haeussler et al., 1995; Eyuboglu et al., 2011b）, high temperature metamorphism （Sisson et al., 1989; Santosh and Kusky, 2010）, and changes in sedimentary basin evolution （Dostal et al., 2001; Wilson et al., 2005）. In this special issue of Geoscience Frontiers （GSF）, I assemble a set of contributions on the current understanding of petrogenesis of slab window-related arc magmas and also convergent margin tectonics.展开更多
文摘1. Introduction The convergence plate margins, where lithospheric plates move each other and collide, are the most intense areas of magmatism, tectonism and metamorphism. The development of slab windows beneath convergent margins, originally defined by Dickinson and Snyder （1979）, is one of the essential mechanisms of subduction- related tectonics. A slab window is a gap that forms in a subducting plate when a mid-oceanic ridge reaches a trench and is subducted. The opening of a slab window causes various geological processes including magmatism （e.g. Thorkelson, 1996; Kinoshita, 2002; Bradley et al., 2003; Thorkelson and Breitsprecher, 2005; Zhang et al., 2010; Eyuboglu et al., 2011a）, changes in plate kinematics and deformation （Hibhard and Karig, 1990）, mineralization （Haeussler et al., 1995; Eyuboglu et al., 2011b）, high temperature metamorphism （Sisson et al., 1989; Santosh and Kusky, 2010）, and changes in sedimentary basin evolution （Dostal et al., 2001; Wilson et al., 2005）. In this special issue of Geoscience Frontiers （GSF）, I assemble a set of contributions on the current understanding of petrogenesis of slab window-related arc magmas and also convergent margin tectonics.
