Geological Characteristics and Tectonic Significance of Paleozoic Intrusive Rocks in Western Tianshan Mountains, Xinjiang Province
详细信息
- 责任者：Zhu Zhixin (University of Xinjiang ; Urümqi 830000 ; China) ; Li Jinyi
- 刊名：Earth Science Frontiers
- 出版年：2011
- 卷期：18(2)
- 关键词：侵入体 ; intrusions ; 构造域 ; structural domains ; 构造环境 ; tectonic setting ; 天山 ; Tianshan Mountains
- 页码：p.170-179
- 图表：3 illus., 23 refs.
- 分类号：0801
- 出版序号：20120169
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
Western Tianshan orogenic belt of Xinjiang is in the central and southern part of ancient Asian tectonic region where magmatic activities were very intense in Paleozoic and intrusive rocks extensively developed. This paper sums up the space-time distribution, geological characteristics and geochemical features of Paleozoic intrusive rocks in Western Tianshan, and they are considered as the products of the South and North Tianshan oceanic basin evolution. In the Early Carboniferous and before, Paleozoic intrusive rocks are zonally distributed in the mountains and they are mainly a set of calc-alkaline intrusive rocks related to convergence and subduction of oceanic basins. In the Late Carboniferous and after, Paleozoic intrusive rocks presents planar distribution, and they are mainly a set of Al-rich granite related to collision and a set of post-orogenic K-rich granite.