Paleomagnetic study on orogenic belt: An example from Early Cretaceous volcanic rocks, Inner Mongolia, China

doi:10.1360/02yd0138

	Paleomagnetic study on orogenic belt: An example from Early Cretaceous volcanic rocks, Inner Mongolia, China
	Ren, SM ; Zhu, RX ; Huang, BC ; Zhang, FQ ; Wang, HQ
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2004-12-01
卷号	47 期号:12 页码:1127-1133
关键词	orogenic belt paleomagnetism Suhongtu of Inner Mongolia Eurasia
ISSN号	1006-9313
DOI	10.1360/02yd0138
文献子类	Article
英文摘要	We report paleomagnetic results for Early Cretaceous lava flows collected from the Suhongtu area of Inner Mongolia, the middle part of the Tianshan-Mongolia Fold Belt (TMFB). Rock-magnetic experiments for different lava flows indicate that the main magnetic mineral is pseudo-single-domain (PSD) magnetite. The characteristic high-temperature remanence component is isolated by thermal demagnetization temperature steps between 300degreesC and 585degreesC, which yields a mean direction of D = 23.6degrees, I = 56.0degrees with alpha(95) = 2.3degrees. We interpret this high-temperature remanence component as primary magnetization based mainly upon the petrographic analysis, which shows that the shape of magnetite crystal is relatively rounded square or polygon without internal reflection and deuterogenous phenomenon. The corresponding pole of the high-temperature remanence component is at 71.1degreesN, 200.5degreesE with A(95) = 2.7degrees. This; Early Cretaceous pole is in good agreement with those for Siberia, North China, and Inner Mongolia, suggesting that these continental blocks had already sutured together in the Early Cretaceous, which would further provide constraints on better understanding of the formation and evolution of the TMFB.
WOS关键词	MAJOR BLOCKS ; TARIM BLOCK ; NORTH ; CONSTRAINTS ; COLLISION ; HISTORY ; PATH
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000226822400008
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79801]
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 Geol & Geophys, Beijing 100029, Peoples R China 2.Minist Land & Resources China, Strateg Res Ctr Oil & Nat Gas, Beijing 100034, Peoples R China
推荐引用方式 GB/T 7714	Ren, SM,Zhu, RX,Huang, BC,et al. Paleomagnetic study on orogenic belt: An example from Early Cretaceous volcanic rocks, Inner Mongolia, China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2004,47(12):1127-1133.
APA	Ren, SM,Zhu, RX,Huang, BC,Zhang, FQ,&Wang, HQ.(2004).Paleomagnetic study on orogenic belt: An example from Early Cretaceous volcanic rocks, Inner Mongolia, China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,47(12),1127-1133.
MLA	Ren, SM,et al."Paleomagnetic study on orogenic belt: An example from Early Cretaceous volcanic rocks, Inner Mongolia, China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 47.12(2004):1127-1133.