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There are two suites of magmatic arcs in western Kunlun orogenic belt.One is early Paleozoic magmatic arc distributed in northern Kunlun belt,which was represented by Datong pluton with the zircon U-Pb age of middle- to late-Ordovician (443-462 Ma);the other is early Mesozoic magmatic arc distributed along the southern flank of northern Kunlun belt and middle Kunlun terrane,which was represented by Muztaga-Kongur plutons with the zircon U-Pb age of late Triassic (213-222 Ma).