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Accretionary orogenic belts are complicated collages composed of magmatic arcs,accretionary complexes,ophiolitic me′langes,fore-arc/back-arc basins and microcontinents formed at convergent plate margins,which are key sites of continental growth through earth history[1].Arcs are important orogenic components of accretionary orogenesis,but the types of active margin with old continental basement and intraoceanic arcs without continental basement and their roles in accretionary orogenesis are different.The Japan-type arc is a special kind of arc rifted
Accretionary orogenic belts are complicated collages composed of magmatic arcs, accretionary complexes, ophiolitic me’langes, fore-arc / back-arc basins and microcontinents formed at convergent plate margins, which are key sites of continental growth through earth history [1] .Arcs are important orogenic components of accretionary orogenesis, but the types of active margin with old continental basement and intraoceanic arcs without continental basement and their roles in accretionary orogenesis are different. The Japan-type arc is a special kind of arc rifted