Advanced Search
    ZHOU Gang, ZHANG Zhao-chong, HE Bin, WANG Xiang, LI Jian-guo, HE Yong-kang, ZHENG Kai-ping, LUO Shi-bin. SHRIMP zircon U-Pb dating of gneisses in the Mayin Obo fault belt, northern Xinjiang, and its significance[J]. GEOLOGY IN CHINA, 2006, 33(6): 1209-1216.
    Citation: ZHOU Gang, ZHANG Zhao-chong, HE Bin, WANG Xiang, LI Jian-guo, HE Yong-kang, ZHENG Kai-ping, LUO Shi-bin. SHRIMP zircon U-Pb dating of gneisses in the Mayin Obo fault belt, northern Xinjiang, and its significance[J]. GEOLOGY IN CHINA, 2006, 33(6): 1209-1216.

    SHRIMP zircon U-Pb dating of gneisses in the Mayin Obo fault belt, northern Xinjiang, and its significance

    • Abstract:There is a long dispute over the age of medium- and high-grade metamorphic rocks in the Altay area, including gneiss in Qinghe. Li Tiande et al. assign medium- and high-grade metamorphic rocks in the Chonghuer-Altay-Qinghe area on the southern margin of the Altay Mountains, Kuwei-Wuqiagou area of Fuyun County and seat of Fuyun County to the Paleo- and Mesoproterozoic Kemuqi Group and Neoproterozoic Fuyun Group, which has attracted wide attention and debate, especially disputes over the age of gneiss in the Mayin Obo fault belt southwest of the seat of Qinghe County. The authors have performed zircon U-Pb SHRIMP dating of the gneiss. Although they failed to obtain concordia ages, the data of ages in different time intervals still have certain geological significance. The abundant age information of Precambrian zircons affirms the possibility of the occurrence of Precambrian strata in the Altay region and determines that the gneiss should form earlier than the Late Paleozoic.
    • loading

    Catalog

      Turn off MathJax
      Article Contents

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return