SHRIMP Zircon U-Pb Ages and Their Geological Implications for the Metamorphic Rocks in the Qiangtang Basin
详细信息
- 责任者：Peng Zhimin (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Geng Quanru
- 刊名：Sedimentary Geology and Tethyan Geology
- 出版年：2011
- 卷期：31(4)
- 关键词：片麻岩 ; gneisses ; 铀—铅计时 ; U-Pb dating ; 羌塘盆地 ; Qiangtang Basin
- 页码：p.97-103
- 图表：3 illus., 2 tables, 17 refs.
- 分类号：0802
- issnNo：ISSN1009-3850
- isbnNo：CN51-1593/P
摘要
The parametamorphic rocks characteristic of regional metamorphism are observed in Margog Caka, northern Qiangtang Basin. Lithologically, the parametamorphic rocks are assembled by felsic gneiss containing kyanite and sillimanite and sericite quartz schist containing kyanite and sillimanite, and entitled to the name of the pre-Ordovician Qilongwuru Group Complexes based on the 1∶250 000 regional geological survey. These rocks occur as isolated small domes along the northern margin of the central uplift zone. The present paper deals with the tectonic thermal events of varying ages and their geological implications.