Provenance of Neoproterozoic Rocks in Quruqtagh Area, Xinjiang: Evidence from Detrital Zircon Geochronology
详细信息
- 责任者：Zhang Yingli (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Zongqi
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(1)
- 关键词：新元古代 ; Neoproterozoic Era ; 铀—铅计时 ; U-Pb dating ; 物源分析 ; provenance analysis
- 页码：p.121-132
- 图表：5 illus., 2 tables, 41 refs.
- 分类号：1300
- 出版序号：20120423
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Quruqtagh area is situated in the linkage of South Tianshan and Tarim Basin where well preserved sedimentary records. The Beiyixi Formation in the Quruqtagh area is a volcanic-sedimentary succession which consists of igneous rocks and sandstones. The Yukengou Formation is characterized by sandstones and siltstones formed by turbidity current. Based on CL images, there occurred a few magmatic events about 741 Ma, 768 Ma, 821 Ma and 861 Ma. Together with the literature data, it strongly suggests that the basement rocks in the Quruqtagh region were formed in the Meso- to Neo-Archean period. Detrital zircons indicate that the provenances of Beiyixi Formation are 761～847 Ma,851～972 Ma and 1 808～2 498 Ma rocks and main provenance ages of Yukengou Formation are 734～845 Ma, 858～963 Ma and 1 708～2 486 Ma.