Formation Age of Quartz Syenite Porphyry from
详细信息
- 责任者：Cheng Chunhua (Geological University of China ; Wuhan 430074 ; China) ; Zhang Fangrong
- 刊名：Resources Survey & Environment
- 出版年：2010
- 卷期：31(4)
- 关键词：石英正长岩 ; quartz syenite ; 新疆 ; Xinjiang
- 页码：p.257-263
- 图表：4 illus., 1 table, 12 refs.
- 分类号：0801
- issnNo：ISSN1671-4814
- isbnNo：CN32-1640/N
摘要
Kekusayi series of quartz syenite porphyries in Wusun mountain region, West Tianshan, Xinjiang, which produced as warty and dike type, is mainly intruded into the strata of Early Carboniferous, Dahalajunshan formation. U-Pb isotope dating zircons from Kekusayi quartz syenite porphyry are determined by LA-ICP-MS and yield a zircon U-Pb age of (314.4 ± 3.7) Ma (MSWD=0.51), which indicates that the formation age should be Late Carboniferous. This paper provides a geochronology evidence for discussing the magmatism and tectonic-environment of this region.