Structure Features of Olistostrome Under Permian Extension Environment in Bogda Mountain
详细信息
- 责任者：Guo Wei (Department of Geology ; Northwest University ; Xi’an 710069 ; China) ; Zhou Dingwu
- 刊名：Journal of Northwest University
- 出版年：2011
- 卷期：41(4)
- 关键词：滑塌构造 ; slump structure ; 滑积层 ; olistostromes ; 新疆 ; Xinjiang
- 页码：p.658-662,675
- 图表：4 illus., 11 refs.
- 分类号：0803
- issnNo：ISSN1000-274X
- isbnNo：CN61-1072/N
摘要
To study the depositional environment and tectonic features at key turning point in Bogda region. The systematical study to structure of olistostromes distributed in areas of Qijiagou and Tianchi in the southern margin of Bagada Mountains and Baiyanghe area in the northern margin of Bogda Mountains, combined with the isotope dating and geochemical analysis on intrusive rocks and volcanic rocks distributed in basins at both sides of Bogda Mountains. Bogda region was the environment of regional extension and rift during Permian. Rift depression basin controlled not only rapid deposition of coarse detritus, but also intrusion, eruption and overflow of basic rocks under inter-plate rift environment. In early Permian, the tectonic environment of Bogda area changed significantly from the collision orogeny environment to the post-orogenic extensional environment.
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