地质通报2016，Vol.35Issue(4)：553-558,6.
蒙古国Oyu Tolgoi外围碱长花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义
LA-ICP-MS zir-con U-Pb dating of alkali-feldspar granite on the periphery of the Oyu Tolgoi deposit, Mongolia, and its geological signifi-cance
摘要
Abstract
The alkali-feldspar granite of the study area located 20km south of the superlarge Oyu Tolgoi Cu-Au deposit. The tecton⁃ic setting of the study area belongs to Paleozoic island arc zone of Gobi-Tianshan controlled by intersection of the near-latitudinal fault and an oblique transverse fault on the south margin of Siberian plate. A sample was collected from Onealkali-feldspar granite, and CL characteristics of zircons suggest magmatic origin. LA-ICP-MS U-Pb dating of zircon from the sample shows that the em⁃placing age is 286.0±0.91Ma (MSWD=1.4), belonging to Permian period. The study area is characterized by multiperiodic diagenesis and mineralization. The isotope age provides not only the direct evidence for the multiperiodic magmatic activities but also the pros⁃pecting direction for the study area.关键词
锆石/花岗岩/Oyu Tolgoi/蒙古Key words
zircon/alkali-feldspar granite/Oyu Tolgoi/Mongolia分类
天文与地球科学引用本文复制引用
唐文龙,李俊建,付超,党智财,赵泽霖,Orolmaa Demberel,Tomurtogoo Onongyn,Delgersaikhan Adiya,Enkhbat Tserendash..蒙古国Oyu Tolgoi外围碱长花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义[J].地质通报,2016,35(4):553-558,6.基金项目
中国地质调查局项目（编号1212010561510、1212010811061、1212011120330、12120114001201、1212010781028、212011085488）、国土资源公益性行业科研专项（编号200811010）和国家国际科技合作项目 （）
