中文摘要：

崆岭杂岩除太古宙结晶基底外，还出露一套以含石墨和富铝矿物为特征的孔兹岩系。相对于结晶基底，目前对于该套表壳岩系的同位素年代学研究有限。对该套孔兹岩系中代表性岩石类型榴线英岩开展了变质锆石U-Pb同位素年龄测定。研究结果表明，榴线英岩变质年龄为1964±12Ma。结合前人在相近地层岩石组合中报道的锆石U-Pb年龄数据，推测崆岭杂岩孔兹岩系原岩可能沉积于2.1~2.0Ga。扬子陆核的古元古代变质-岩浆作用可能与全球广泛存在的同时期(2.1~1.8Ga)碰撞造山事件有关，暗示其很可能是Columbia超大陆的重要组成部分。

英文摘要：

Apart from the Archean metamorphic crystal basement,a series of khondalite-bearing graphites and Al-rich minerals areexposed in the Kongling Complex.However,relative to the study of metamorphic crystal basement,geochronological studies of thesupracrustal rocks are still very insufficient.In this study,the LA-ICP-MS zircon U-Pb study was carried out for the typical samplesof garnet-sillimanite quartzite in the khondalite series.The result shows that the garnet-sillimanite-quartzite was metamorphosed at1964±12Ma.Combined with the documented zircon U-Pb geochronologic data,the authors hold that the khondalite-series in theKongling Complex was deposited at2.1~2.0Ga.The Paleoproterozoic metamorphism and magmatism recognized in the interior ofthe Yangtze craton are consistent with the worldwide coeval collision-related orogenic event during2.1~1.8Ga,indicating that thisevent may have been an important component in the Columbia supercontinent.