U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, western block of the North China Craton

doi:10.1016/j.epsl.2005.11.024

	U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, western block of the North China Craton
	Xia, XP ; Sun, M ; Zhao, GC ; Wu, FY ; Xu, P ; Zhang, JH ; Luo, Y
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2006-01-31
卷号	241 期号:3-4 页码:581-593
关键词	detrital zircon LA-ICPMS U-Pb age Hf isotope khondalite North China Craton
ISSN号	0012-821X
DOI	10.1016/j.epsl.2005.11.024
文献子类	Article
英文摘要	Detrital zircons from the Wulashan khondalites in the Ordos Terrane, western block of the North China Craton, give U-Pb ages between 1.84 and 2.32 Ga, showing that their provenance was dominated by Paleoproterozoic rocks, much younger than those exposed in the Eastem Block. These zircons have oscillatory growth zoning and possess epsilon(Hf) values between -8 and +9, suggesting derivation of their precursor magmas from old crust and juvenile materials from the mantle. The lowest epsilon(Hf) values of zircons with different ages give a line that intersects the depleted mantle line at about 2.6 Ga in a epsilon(Hf) vs. time diagram. This may imply that the precursor magma source in the deep level of the crust was largely separated from the mantle similar to 2.6 Ga ago and therefore 2.6 Ga may be an important crustal formation period for the terrane. One khondalite sample has detrital zircons with a single age population at similar to 2.0 Ga and positive e(Hf) values from +1 to +9, clearly recording the significant addition of juvenile materials at similar to 2.0 Ga in the source region. This may inspire us to seek whether there was a connection between a mantle superevent and the formation of Columbia supercontinent. Data of this study exclusively demonstrate that the Ordos Terrane was developed independently from the Eastern Block until assembly of the Columbia supercontinent. Therefore, tectonic models involving that the whole North China Craton was cratonized. 2.5 Ga ago should be dismissed. (c) 2005 Elsevier B.V. All rights reserved.
WOS关键词	PALEOPROTEROZOIC TECTONIC EVOLUTION ; ARCHEAN CRUSTAL EVOLUTION ; HIGH-PRESSURE GRANULITES ; BASEMENT ROCKS ; MESOPROTEROZOIC SUPERCONTINENT ; RETROGRADED ECLOGITES ; EASTERN GOLDFIELDS ; CONTINENTAL-CRUST ; MASS-SPECTROMETRY ; DEPLETED MANTLE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000235289000019
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66854]
专题	中国科学院地质与地球物理研究所
通讯作者	Sun, M
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xia, XP,Sun, M,Zhao, GC,et al. U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, western block of the North China Craton[J]. EARTH AND PLANETARY SCIENCE LETTERS,2006,241(3-4):581-593.
APA	Xia, XP.,Sun, M.,Zhao, GC.,Wu, FY.,Xu, P.,...&Luo, Y.(2006).U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, western block of the North China Craton.EARTH AND PLANETARY SCIENCE LETTERS,241(3-4),581-593.
MLA	Xia, XP,et al."U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, western block of the North China Craton".EARTH AND PLANETARY SCIENCE LETTERS 241.3-4(2006):581-593.