PERMIAN-TRIASSIC MAGNETOSTRATIGRAPHY - NEW RESULTS FROM SOUTH CHINA

	PERMIAN-TRIASSIC MAGNETOSTRATIGRAPHY - NEW RESULTS FROM SOUTH CHINA
	HELLER, F ; HAIHONG, C ; DOBSON, J ; HAAG, M
刊名	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
	1995-06-01
卷号	89 期号:3-4 页码:281-295
ISSN号	0031-9201
文献子类	Article
英文摘要	Continuous marine sediments of Permian to Triassic age are widely distributed over large areas in Southern China. They offer the potential for developing magnetostratigraphic columns to investigate the polarity status of the palaeomagnetic field. Three carbonate sections on the Yangtze platform, which represent mainly the Upper Permian but also parts of the Lower Triassic and possibly parts of the uppermost Lower Permian, contain a long-term main R-N-R-N-R polarity succession throughout the Permian. This signal is hidden under-strong overprint magnetizations of variable origin and can be mostly obtained only from directional trends of the natural remanent magnetization during demagnetization rather than from clear stable end-point directions. The new Chinese polarity sequences are in accord with magnetostratigraphic records from the former USSR and Pakistan. Depending on stratigraphic assignment of the lithological formations studied, either they include the boundary between the Lower and Upper Permian and give evidence that the Kiaman reversed polarity superchron had ended before the Upper Permian, or the formations all belong stratigraphically to the Upper Permian, with the oldest reversed interval to be correlated with the reversed zone in the Midian stage of the palaeontologically well-dated Nammal section in Pakistan. This zone is preceded by at least one normal polarity zone at Nammal so that the end of the Kiaman superchron would not be observed in the new Chinese sections.
WOS关键词	MAGNETIC POLARITY STRATIGRAPHY ; SEDIMENTARY-ROCKS ; BOUNDARY ; REMAGNETIZATION ; SECTION ; PROVINCE ; IRIDIUM ; SHANGSI ; BLOCKS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1995RD53600008
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/81212]
专题	中国科学院地质与地球物理研究所
通讯作者	HELLER, F
作者单位	1.CHINESE ACAD SCI,INST GEOL,BEIJING 100029,PEOPLES R CHINA 2.CEA,CTR FAIBLES RADIOACT,MIXTE LAB,CNRS,F-91198 GIF SUR YVETTE,FRANCE
推荐引用方式 GB/T 7714	HELLER, F,HAIHONG, C,DOBSON, J,et al. PERMIAN-TRIASSIC MAGNETOSTRATIGRAPHY - NEW RESULTS FROM SOUTH CHINA[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,1995,89(3-4):281-295.
APA	HELLER, F,HAIHONG, C,DOBSON, J,&HAAG, M.(1995).PERMIAN-TRIASSIC MAGNETOSTRATIGRAPHY - NEW RESULTS FROM SOUTH CHINA.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,89(3-4),281-295.
MLA	HELLER, F,et al."PERMIAN-TRIASSIC MAGNETOSTRATIGRAPHY - NEW RESULTS FROM SOUTH CHINA".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 89.3-4(1995):281-295.