Further paleomagnetic results from the Silurian of the Yangtze Block and their implications

	Further paleomagnetic results from the Silurian of the Yangtze Block and their implications
	Huang, KN ; Opdyke, ND ; Zhu, RX
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2000-02-15
卷号	175 期号:3-4 页码:191-202
关键词	paleomagnetism Silurian Yangtze Platform
ISSN号	0012-821X
文献子类	Article
英文摘要	Silurian redbeds were sampled at two localities in northeastern Guizhou and Yunnan provinces of China for paleomagnetic study. Progressive thermal demagnetization revealed multiple magnetic components from these samples: a low unblocking temperature component (A) of recent origin, a post-folding middle to high unblocking temperature component (B) probably acquired during late Mesozoic time, and a pre-folding high unblocking temperature component (C). Two statistically distinguishable groups of directions were further recognized from the C component with one (C1) having more easterly declination than the other (C2) and both having a of shallow inclination. The paleomagnetic pole from the C1 magnetization coincides with a pre-folding pole reported from the coeval rocks in neighboring southern Sichuan Province; its relation to the apparent polar wander path (APWP) for the Yangtze Block (YB) suggests that the C1 magnetization was probably acquired during the Silurian. By the same argument, the C2 magnetization was probably acquired sometime between the Silurian and Carboniferous. These results reconfirm the equatorial position for the YB during mid-Paleozoic time and clockwise rotation of the YB since at least the mid-Cambrian. (C) 2000 Elsevier Science B.V. All rights reserved.
WOS关键词	SOUTH CHINA BLOCK ; FOLD TEST ; NORTH ; REMAGNETIZATION ; CONSTRAINTS ; HISTORY ; ROCKS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000085407100004
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75758]
专题	中国科学院地质与地球物理研究所
通讯作者	Huang, KN
作者单位	1.Univ Florida, Dept Geol, Gainesville, FL 32611 USA 2.Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Huang, KN,Opdyke, ND,Zhu, RX. Further paleomagnetic results from the Silurian of the Yangtze Block and their implications[J]. EARTH AND PLANETARY SCIENCE LETTERS,2000,175(3-4):191-202.
APA	Huang, KN,Opdyke, ND,&Zhu, RX.(2000).Further paleomagnetic results from the Silurian of the Yangtze Block and their implications.EARTH AND PLANETARY SCIENCE LETTERS,175(3-4),191-202.
MLA	Huang, KN,et al."Further paleomagnetic results from the Silurian of the Yangtze Block and their implications".EARTH AND PLANETARY SCIENCE LETTERS 175.3-4(2000):191-202.