U-Pb Ages of Detrital zircon from meta-sedimentary rock from the Huwan shear zone, Western Dabie Terrain and their geological significance

	U-Pb Ages of Detrital zircon from meta-sedimentary rock from the Huwan shear zone, Western Dabie Terrain and their geological significance
	Jiao, Wen-Fang ; Peng, Min ; Wang, Jing ; Liu, Xiao-Chi ; Wu, Yuan-Bao ; Yang, Sai-Hong
	2009
发表期刊	Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences
卷号	34 期号:1 页码:178-188
摘要	The Huwan high-pressure (HP) metamorphic zone is a key region to investigate the evolution process and timing of the Qinling-Dabieshan-Sulu orogenic belt. However, the timing of eclogite-facies metamorphism in this zone has not been well constrained. In order to constrain the time of eclogite-facies metamorphism, zircons from a metasediment sample HXD98-9 near Xiongdian were selected for LA-ICPMS U-Pb dating and trace element analysis. Metamorphic zircons are characterized by weak or none zoning, low Th/U ratios, low and/or flat HREE patterns, and an insignificantly negative Eu anomaly. These reflect that the metamorphc zircons crystallized with the presence of garnet and the absence of plagioclase feldspar, which occurred in eclogite-facies conditions. The weighted mean 206Pb/238U age of 310±3 Ma for these metamorphic zircons is thus the best estimated age of the eclogite-facies metamorphism in this HP metamorphic zone. Three groups of U-Pb age were obtained from the inherited magmatic zircons, ranging of (400±5 Ma)-(419±5 Ma), (426±5 Ma)-(449±5 Ma), and (496±5 Ma)-(524±7 Ma), respectively. One inherited grain has a U-Pb age of 580.7±7.3 Ma. These indicate that the inherited zircons were mostly derived from southern part of the North China block, while some from the Yangtze block.
语种	英语
ISSN	1000-2383
收录类别	EI ; 中文核心期刊要目总览 ; 中国科技核心期刊
EI入藏号	20090811914346
出版者	China University of Geosciences, Yujishan, Wuhan, 430074, China
文献类型	期刊论文
条目标识符	http://ir.cug.edu.cn/handle/2XU834YA/278921
专题	教学院系_数学与物理学院
通讯作者	Yang, Sai-Hong
作者单位	1.State Key Laboratory of Geological Processes and Mineral Resources, Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China 2.MOE Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069, China
推荐引用方式 GB/T 7714	Jiao, Wen-Fang,Peng, Min,Wang, Jing,et al. U-Pb Ages of Detrital zircon from meta-sedimentary rock from the Huwan shear zone, Western Dabie Terrain and their geological significance[J]. Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences,2009,34(1):178-188.
APA	Jiao, Wen-Fang,Peng, Min,Wang, Jing,Liu, Xiao-Chi,Wu, Yuan-Bao,&Yang, Sai-Hong.(2009).U-Pb Ages of Detrital zircon from meta-sedimentary rock from the Huwan shear zone, Western Dabie Terrain and their geological significance.Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences,34(1),178-188.
MLA	Jiao, Wen-Fang,et al."U-Pb Ages of Detrital zircon from meta-sedimentary rock from the Huwan shear zone, Western Dabie Terrain and their geological significance".Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences 34.1(2009):178-188.