气候变化领域集成服务门户(CCPortal): Neogene rotations in the Jiuquan Basin, Hexi Corridor, China

CCPortal

DOI	10.1144/SP373.6
	Neogene rotations in the Jiuquan Basin, Hexi Corridor, China
	Yan, Maodu; Fang, Xiaomin; Van der Voo, Rob; Song, Chunhui; Li, Jijun
通讯作者	Yan, MD (通讯作者)
发表日期	2013
ISSN	0305-8719
起始页码	173
结束页码	189
卷号	373
英文摘要	Vertical-axis rotations of blocks in/around the Tibetan Plateau can be attributed to the India-Asia collision. Study of the vertical-axis rotations of these blocks will increase our understanding of the mechanisms and kinematics of continent-continent collisions. We report here a new palaeomagnetic study of rotations using data from four localities (five magnetostratigraphy sections) in the Jiuquan Basin. Our study indicates that the mean declinations of each section are different from each other, similar to what has been observed in the other localities in the NE Tibetan Plateau. However, using the mean directions of every 100 m of section, we observe that the four localities have similar sequential patterns of rotations during the last 13 Ma: significant continuous counterclockwise before c. 8.0 Ma, insignificant rotations between 8.0-4.0 Ma, and slight clockwise rotation after 4.0 Ma. This indicates that, rather than being a record of spatially varying declinations, it is a temporal variation in the occurrence of regional rotations. Combined with other geological evidence, the rotation patterns may suggest two major tectonic activity phases of the northeastern Tibetan Plateau during the last 13 Ma: an eastward extrusion and strike-slip dominant phase before 8.0 Ma, a significant shortening and a rapid uplift dominant phase after 8.0 Ma.
关键词	ALTYN-TAGH FAULT RESOLUTION MAGNETO STRATIGRAPHY NORTHEASTERN TIBETAN PLATEAU QAIDAM BASIN GUIDE BASIN PALEOMAGNETIC DATA TECTONIC ROTATION GEOMAGNETIC-FIELD QINGHAI PROVINCE NORTHERN TIBET
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Geology
WOS类目	Geochemistry & Geophysics ; Geology
WOS记录号	WOS:000342848300009
来源期刊	MAGNETIC METHODS AND THE TIMING OF GEOLOGICAL PROCESSES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258191
推荐引用方式 GB/T 7714	Yan, Maodu,Fang, Xiaomin,Van der Voo, Rob,et al. Neogene rotations in the Jiuquan Basin, Hexi Corridor, China[J]. 中国科学院青藏高原研究所,2013,373.
APA	Yan, Maodu,Fang, Xiaomin,Van der Voo, Rob,Song, Chunhui,&Li, Jijun.(2013).Neogene rotations in the Jiuquan Basin, Hexi Corridor, China.MAGNETIC METHODS AND THE TIMING OF GEOLOGICAL PROCESSES,373.
MLA	Yan, Maodu,et al."Neogene rotations in the Jiuquan Basin, Hexi Corridor, China".MAGNETIC METHODS AND THE TIMING OF GEOLOGICAL PROCESSES 373(2013).