Paleomagnetic constraints on the tectonic history of the major blocks of China duing the Phanerozoic

	Paleomagnetic constraints on the tectonic history of the major blocks of China duing the Phanerozoic
	Zhu, RX ; Yang, ZY ; Wu, HN ; Ma, XH ; Huang, BC ; Meng, ZF ; Fang, DJ
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	1998-12-01
卷号	41 页码:1-19
关键词	China paleomagnetic tectonophysics
ISSN号	1006-9313
文献子类	Article
英文摘要	Paleomagnetic study of China and its constraints on Asia tectonics has been a hot spot. Some new paleomagnetic data from three major blocks of China, North China Block (NCB), Yangtze Block (YZB) and Tarim Block (TRM) are first reported, and then available published Phanerozoic paleomagnetic poles from these blocks with the goal of placing constraints on the drift history and paleocontinental reconstruction are critically reviewed. It was found that all three major blocks were located at the mid-low latitude in the Southern Hemisphere during the Early Paleozoic. The NCB was probably independent in terms of dynamics, its drift history was dominant by latitudinal placement accompanying rotation in the Early Paleozoic. The YZB was close to Gondwanaland in Cambrian, and separated from Gondwanaland during the Late-Middle Ordovician. The TRM was part of Gondwanaland, and might be close to the YZB and Australia in the Early Paleozoic. Paleomagnetic data show that the TRM was separated from Gondwanaland during the Late-Middle Ordovician, and then drifted northward. The TRIM was sutured to Siberia and Kazakstan blocks during the Permian, however, the composite Mongolia-NCB block did not collide with Siberia till Late Jurassic. During Late Permian to Late Triassic, the NCB and YZB were characterized by northern latitudinal placement and rotation on the pivot in the Dabie area. The NCB and YZB collided first in the eastern part where they were located at northern latitude of about 6 degrees-8 degrees, and a triangular oceanic basin remained in the Late Permian. The suturing zone was located at northern latitude of 25 degrees where the two blocks collided at the western part in the Late Triassic. The collision between the two blocks propagated westward after the YZB rotated about 70 degrees relative to the NCB during the Late Permian to Middle Jurassic. Then two blocks were northward drifting (about 5 degrees) together with relative rotating and crust shortening. II was such scissors-like collision procedure that produced intensive compression in the eastern parr of suturing zone between the NCB and YZB, in which continental crust subducted into the upper mantle in the Late Permian, and then the ultrahigh-pressure rocks extruded in the Late Triassic. Paleomagnetic data also indicate that three major blocks have been together clockwise rotating about 20 degrees relative to present-day rotation axis since the Late Jurassic. It was proposed that Lahsa Block and India subcontinent successively northward subducted and collided with Eurasia or collision between Pacific/Philippines plates and Eurasia might be responsible for this clockwise rotating of Chinese continent.
WOS关键词	SOUTH CHINA ; NORTH ; COLLISION ; METAMORPHISM ; TARIM
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000079306300001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75126]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhu, RX
作者单位	1.Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China 2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 3.NW Univ Xian, Dept Geol, Xian 710079, Peoples R China 4.Chinese Acad Sci, Inst Geol, Lanzhou 730000, Peoples R China 5.Zhejiang Univ, Dept Earth Sci, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Zhu, RX,Yang, ZY,Wu, HN,et al. Paleomagnetic constraints on the tectonic history of the major blocks of China duing the Phanerozoic[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,1998,41:1-19.
APA	Zhu, RX.,Yang, ZY.,Wu, HN.,Ma, XH.,Huang, BC.,...&Fang, DJ.(1998).Paleomagnetic constraints on the tectonic history of the major blocks of China duing the Phanerozoic.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,41,1-19.
MLA	Zhu, RX,et al."Paleomagnetic constraints on the tectonic history of the major blocks of China duing the Phanerozoic".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 41(1998):1-19.