Zircon LA-ICP-MS U-Pb Dating of Amphibolite in the Southern Margin of Altyn Tagh , China
详细信息
- 责任者：Tang Zhuo (Xi’an Institute of Geology and Mineral Resources ; China Geological Survey ; Xi’an 710054 ; China) ; Ma Zhongping
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(1)
- 关键词：角闪岩 ; amphibolites ; 铀—铅计时 ; U-Pb dating ; 阿尔金断裂带 ; Altun Fracture Zone
- 页码：p.51-57
- 图表：5 illus., 1 table, 14 refs.
- 分类号：0802
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
This paper provides the zircon LA-ICP-MS U-Pb isotopic dating result of the amphibolite from Altyn Tagh Group in the southern margin of Altyn Tagh and discusses its geological significance. The new data of isotopic chronology indicated that there existed a tectothermal event which corresponds to Lüliang orogenic movement in China and maybe related to the converging or breakup event of global Columbia suppercontinent in Paleoproterozoic. The result also indicate that there are Neoarchean-Paleoproterozoic metamorphosed basement in the Altyn Tagh area and provide a new data for research Precambrian teotothermal events and the evolution of Altyn Tagh belt.