星星峡石英闪长质片麻岩的锆石年代_省略_山造山带构造演化及基底归属的意义_贺振宇.pdf

1000-0569 / 2012 /028 (06)-1857-74 Acta Petrologica Sinica 岩石学报 : 星星峡石英闪长质片麻岩的锆石年代学 对天山 * 造山带构造演化及基底归属的意义 1 1 2 3 3 贺振宇 张泽明 宗克清 王伟 于飞 HE ZhenYu1 ，ZHANG ZeMing1 ，ZONG KeQing2 ，WANG Wei3 and YU Fei3 1. ， ， 100037 中国地质科学院地质研究所 大陆构造与动力学国家重点实验室 北京 2. ， 430074 中国地质大学地质过程与矿产资源国家重点实验室 武汉 3. ， 430074 中国地质大学地球科学学院 武汉 1. State Key Laboratory f or Continental Tectonics and Dynamics ，Institute of Geology ，Chinese Academy of Geological Sciences ，Beij ing 100037 ，China 2. State Key Laboratory of Geological Processes and Mineral Resources ，China University of Geosciences ，Wuhan 430074 ，China 3. Faculty of Earth Sciences ，China University of Geosciences ，Wuhan 430074 ，China 20 12-02-0 1 收稿，20 12-04 -25 改回. He ZY ，Zhang ZM ，Zong KQ ，Wang W and Yu F. 2012. Zircon geochronology of Xingxingxia quartz dioritic gneisses : Implications for the tectonic evolution and Precambrian basement affinity of Chinese Tianshan orogenic belt. Acta Petrologica Sinica ，28 (6):1857 － 1874 Abstract The Tianshan orogen is the major component of the Central Asian Orogenic Belt (CAOB). There has been a continued debate on the derivation of the old Precambrian crustal basements and Paleozoic tectonic divisions and evolutions of the orogen. In this paper we present petrological characteristics ，zircon U-Pb ages and Hf isotope compositions as well as the whole rock geochemistry of the quartz dioritic gneisses from west of the Xingxingxia Town. Based on the mineral assemblies ，their protoliths are speculated to be quartz dioritic. Zircon g