The Central Asian Orogenic Belt (CAOB) is the world largest accretionary orogen formed by multi-stage collisions of the Siberian,Kazakhstan,Tarim,and North China cratons.It is dominated by Pacific-type orogenic belts,which form over subduction zones,where oceanic lithosphere is submerged under active continental margins bringing together various fragments of oceanic (oceanic islands,plateaus and mid-oceanic ridges) and continental (island arcs and microcontinents) crust.The subduction forms accretionary complexes with fragments of Oceanic Plate Stratigraphy (OPS) and LP-HT blueschist belts and finally contributes to the growth of continental crust.