Abstract: The metamorphic rocks in Xilingele complex mainly consist of biotite gneisses with plagioclase amphibolite lenses.The gneisses show medium fractionated LREE-enriched pattern with obvious negative Eu anomalies.Their incompatible trace element concentrations are similar to the average continental crust but with depletions of Ba and Sr.One Sm-Nd isochron for amphibolites yields an age of 1 202±64 Ma with εNd(t)value of+6.8.The Rb-Sr isochron for amphibolites yields an isochron age of 393±14 Ma with an initial 87Sr／86Sr ratio of 0.703 79.This Rb-Sr isochron age is consistent with the Ar-Ar age(～383 Ma)of the blueschists in this region,and is～40 Ma younger than the Rb-Sr isochron age of Hegenshan ophiolite.It probably recorded the metamorphism caused by the continental collision after the closure of the Paleo-Asian Ocean ,which finally led to the continental collision of the north China craton with the Siberian craton.The Rb-Sr isoehmn for the gneisses yields an age of 279±6.4 Ma with an initial 87Sr／S86Sr ratio of 0.708 51.which is consistent with the age of volcanic rocks(～277 Ma)most-widely distributed in this region.Such coincidence probably implies that the metamorphism recorded in the studied gneisses was caused by magmatic processes during Early Permian.The geochemistry of the Xilingele complex thus recorded not only the Rodinia accretion processes,but also the closure event of the Paleo-Asian Ocean (～430 Ma),continental collision(～390 Ma)and post-collisional magmatism(～280 Ma)by comparing the ophiolites and magmatic rocks in this region.