Zircon La-Icp-Ms U-Pb Age and Geochemistry of Two-Mica Granite in Kumishen Area in Eastern Part of the Southern Tianshan Mountains
详细信息
- 责任者：Huang Gang (Regional institute of Shaanxi Bureau of Geological Exploration ; Xianyang 712000 ; China) ; Wang Xinlu
- 刊名：Xinjiang Geology
- 出版年：2011
- 卷期：29(3)
- 关键词：二云母花岗岩 ; two-mica granite ; 铀—铅计时 ; U-Pb dating ; 新疆 ; Xinjiang
- 页码：p.263-269
- 图表：illus., 2 tables, 50 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
In Kumishen area the two-mica granite was emplaced in the Mesoproterozoic Xingxingxia Group in eastern part of South Tianshan Mountains. Based on geological setting and geochemical characteristics, it is showed that two-mica granite source rocks derive from Xingxingxia Group metapelites. It is produced in a transitional tectonic setting from continental collision tectonic environment of late orogenic epoch to post-collisonal, which probably represents completion of the collisional orogeny between Tarim Plate and Yili-Kazakstan plate in Early Permian, as well as entering into a post-collisional evolution stage in Kumishi area in eastern part of South Tianshan.