Detrital Zircon U-Pb Dating from Sandstone of the Upper Permian Linxi Formation, Linxi Area, Inner Mongolia, China and Its Tectonic Implications

详细信息   

• 责任者：Han Jie (College of Earth Sciences ; Jilin University ; Changchun 150061 ; China) ; Zhou Jianbo
• 刊名：Geological Bulletin of China
• 出版年：2011
• 卷期：30(2-3)
• 关键词：晚二叠世 ; Upper Permian ; 石英砂岩 ; quartz sandstone ; 铀—铅计时 ; U-Pb dating ; 内蒙古 ; Inner Mongolia
• 页码：p.258-269
• 图表：6 illus., 2 tables, 56 refs.
• 分类号：1200
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

摘要

Linxi Formation is mainly consist of clastic rocks. New research from Linxi detritial zircon by the LA-ICP-MS U-Pb dating showed that the 50 zircons analyses gave two age populations： 256±2～322±3 Ma with the peak age at 279Ma and 357±7～497±4 Ma with peak age at 441 Ma. In addition, three analyses yielded ages of 797±6 Ma, 1413±38 Ma, and 1661±24 Ma. New date from this study suggest that Linxi Formation belongs to NE China blocks. Therefore the suture zone between the Siberia and North China is situated in the southern of Linxi Formation, which locates along the Xar Moron suture, and the timing for the final collision should be later than Late Permian, probably at Early Triassic.