Paleomagnetism of middle Triassic redbeds from Hubei and northwestern Hunan provinces, south China

	Paleomagnetism of middle Triassic redbeds from Hubei and northwestern Hunan provinces, south China
	Huang, KN ; Opdyke, ND
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	1996-09-01
卷号	143 期号:1-4 页码:63-79
关键词	Paleomagnetism Middle Triassic Hunan China Hubei China Yangtze Platform Oroclines
ISSN号	0012-821X
文献子类	Article
英文摘要	Paleomagnetic investigations have been conducted on redbeds from the Middle Triassic Badong Formation at Badong, Hubei and Sangzhi, Hunan as well as from the coeval Puxi Formation from Puxi, southeastern Hubei province, South China. The characteristic remanent magnetization (ChRM) determined from Badong and Sangzhi passes the fold test with dual polarity. The tilt-corrected ChRM direction from Puxi is congruent with those from Badong and Sangzhi but is based on a smaller number of samples collected from a monocline. These ChRM directions are believed to be primary. The data indicates that Badong has been rotated clockwise by 13.5 +/- 8.5 degrees relative to Sangzhi, which, in turn, has possibly been rotated in the same sense with respect to other parts of the Yangtze Block (YB) except eastern Sichuan based on the bend of the sampled fold axis and the Lower Triassic paleomagnetic data published for the YB. The Lower and Middle Triassic paleomagnetic data together appear to indicate that eastern Sichuan and the border area between Sichuan, Guizhou, Hubei and Hunan provinces have been affected by differential rotations, probably due to oroclinal bending. The paleomagnetic data obtained from this study further constrain the timing of the final suturing of the YB with the North China Block (NCB) to be post-Middle Triassic.
WOS关键词	MESOZOIC OVERTHRUST TECTONICS ; ROCKS ; BLOCK ; REMAGNETIZATION ; BEARING ; REGION ; NORTH ; TIME
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1996VN03000006
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/81876]
专题	中国科学院地质与地球物理研究所
作者单位	1.UNIV FLORIDA,DEPT GEOL,GAINESVILLE,FL 32611 2.CHINESE ACAD SCI,INST GEOPHYS,BEIJING 100101,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Huang, KN,Opdyke, ND. Paleomagnetism of middle Triassic redbeds from Hubei and northwestern Hunan provinces, south China[J]. EARTH AND PLANETARY SCIENCE LETTERS,1996,143(1-4):63-79.
APA	Huang, KN,&Opdyke, ND.(1996).Paleomagnetism of middle Triassic redbeds from Hubei and northwestern Hunan provinces, south China.EARTH AND PLANETARY SCIENCE LETTERS,143(1-4),63-79.
MLA	Huang, KN,et al."Paleomagnetism of middle Triassic redbeds from Hubei and northwestern Hunan provinces, south China".EARTH AND PLANETARY SCIENCE LETTERS 143.1-4(1996):63-79.