Zircon ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area, northern margin of the North China block.

	Zircon ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area, northern margin of the North China block.
	Wang Fang 1,2; Chen FuKun 3; Hou ZhenHui 3; Peng Peng 1; Zhai MingGuo 1
刊名	ACTA PETROLOGICA SINICA
	2009-11-01
卷号	25 期号:11 页码:3057-3074
关键词	North China block Paleozoic Granite Zircon age Sr-Nd-Hf isotopic composition
ISSN号	1000-0569
文献子类	Article
英文摘要	This study presents zircon U-Pb ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area of northern Hebei Province. These granitoids intrude in the medium- to high-grade metamorphic basement rocks of the Hongqiyingzi Group exposed in the tectonic unit within the northern into margin of the North China block. Zircon LA-ICP-MS dating results show that the Hailiutu granitic pluton records two stages of magmatism forming in 299 +/- 3 Ma and 250 +/- 11 Ma. The Zhenningpu gneissic granite and the Baihuaguo gneissic diorite are also dated at 287 I Ma and 253 +/- 3 Ma, respectively. The late Paleozoic granitoid have low initial (87)Sr/(86)Sr values of 0.7062 to 0.7076, low epsilon(Nd) (t) values of -18.1 to -9.6, and old Nd depleted mantle model ages of 2.49Ga to 1.87Ga. epsilon(Hf)(t) values and Hf average crust model ages (T(DM)(C)) range from -13.2 to -7.4 and 2.15Ga to 1.79Ga. A combination of zircon Hf and whole-rock Nd isotopic compositions indicates old crustal rocks of the North China block as major source material for the granitic magmas. From the evidence of the formation ages and geochemical composition, late Paleozoic granitoids in the Chongli-Chicheng area are similar to those exposed in the Fenning-Chengde area with some differences, both likely represent magmatic products forming in different tectonic regimes along the northern margin of the North China block.
WOS关键词	ASIAN OROGENIC BELT ; TECTONIC IMPLICATIONS ; INNER-MONGOLIA ; CRATON ; EVOLUTION ; ROCKS ; MANTLE ; GEOCHRONOLOGY ; PETROGENESIS ; CONSTRAINTS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000273455000033
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70354]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang Fang
作者单位	1.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Sch Earth & Space Sci, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang Fang,Chen FuKun,Hou ZhenHui,et al. Zircon ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area, northern margin of the North China block.[J]. ACTA PETROLOGICA SINICA,2009,25(11):3057-3074.
APA	Wang Fang,Chen FuKun,Hou ZhenHui,Peng Peng,&Zhai MingGuo.(2009).Zircon ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area, northern margin of the North China block..ACTA PETROLOGICA SINICA,25(11),3057-3074.
MLA	Wang Fang,et al."Zircon ages and Sr-Nd-Hf isotopic composition of late Paleozoic granitoids in the Chongli-Chicheng area, northern margin of the North China block.".ACTA PETROLOGICA SINICA 25.11(2009):3057-3074.