A Discussion on Carboniferous Tectonic Settings in the Eastern Sector of Gangdise Belt , Tibet
详细信息
- 责任者：Ran Mingjia (Chengdu University of Technology ; Chengdu 610059 ; China) ; Zhong Kanghui
- 刊名：Geological Review
- 出版年：2012
- 卷期：58(2)
- 关键词：石炭纪 ; Carboniferous ; 构造环境 ; tectonic setting ; 冈底斯山 ; Gangdise Range
- 页码：p.250-258
- 图表：9 illus., 4 tables, 25 refs.
- 分类号：0300
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
There has been controversial in eastern sector of the Gangdise belt. Through the analysis on geochemistry of rock, this paper found out the Nuocuo Fm. and Laigu Fm. possess transitional characteristics from the alkalis series and own bimodal igneous tectonic features. The authors point out that the characteristics of Carboniferous tholeiite are similar to continental tholeiite. On the tectonic discrimination diagrams, the tholeiite samples of the basalt from the eastern sector of the Ganddise are focused on the intraplate continental stretching belt or beginning rift. So it is considered that the eastern sector of the Gangdise belt in Carboniferous belongs to an intracontinental rift or a rift on passive continental margin.