Zircon SHRIMP U-Pb Age of Targen Monzogranite in Western Junggar Basin, Xinjiang , China
详细信息
- 责任者：Song Biao (Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Li Jinyi
- 刊名：Geological Bulletin of China
- 出版年：2011
- 卷期：30(1)
- 关键词：二长花岗岩 ; monzogranite ; 铀—铅计时 ; U-Pb dating ; 准噶尔盆地 ; Junggar Basin
- 页码：p.19-25
- 图表：6 illus., 1 table, 13 refs.
- 分类号：0801
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
The Targen monzogranite was sheared by the Tuoli fault in the middle of western Junggar Basin and the maximum initial time of left-lateral slip of the Tuoli fault will be limited by the emplacement time of the monzogranite. According to the observation of the very similar CL images of the zircons, the weighted average value of 206Pb/238U age of（295.8±2.5） Ma was obtained by the calculation using 13 among the 31 data, which is interpreted as the emplacement time of the Targen monzogranite. Based on the fact of left-lateral slip sheared and the emplacement time of the Targen monzogranite, it is clearly indicated that the initiation of left-lateral slip of the Tuoli fault took place after 295 Ma.
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