Zircon U-Pb age, geochemistry and Sr-Nd-Hf isotopic geochemistry of the;intermediate-acid rocks from the Heishan-Mulonggou area in the southern;margin of North China Block

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	Zircon U-Pb age, geochemistry and Sr-Nd-Hf isotopic geochemistry of the;intermediate-acid rocks from the Heishan-Mulonggou area in the southern;margin of North China Block
	Ke ChangHui 6; Wang XiaoXia ; Li JinBao 1; Yang Yang 2; Qi QiuJu 3; Zhou XiaoNing 4
刊名	ACTA PETROLOGICA SINICA
	2013
卷号	29 期号:3 页码:781-800
关键词	LA-ICPMS zircon U-Pb age Sr-Nd-Hf isotope Intermediate-acid rocks Southern margin of North China Block
ISSN号	1000-0569
英文摘要	Zircon U-Pb LA-ICPMS dating for the Xiaxie and Mulonggou granitoid plutons from the southern margin of the North China block yield 154 +/- 2Ma (2 sigma, N = 16) and 151 +/- 1Ma (2 sigma, N = 15), respectively. These granitoids are metaluminous or weakly peraluminous and high-K calc-alkaline or shoshonite series with A/CNK = 0.75 similar to 1.04, Na2O + K2O = 6.15% similar to 8.42%, K2O/Na2O = 0.77 similar to 2.29. They are riched in LILE, e. g. LREE, Rb, Ba, K, Pb, Sr and depleted in HFSE, e. g. HREE, Zr, Hf, Ta, Nb, P, Ti with weak negative abnormal of Eu (delta Eu = 0.85 similar to 0.99). Whole. rocks Sr-Nd compositions of the granitoids are characterized by I-Sr = 0.708676 similar to 0.711480 and epsilon(Nd) (t) = -22 similar to -16.1 with Nd model ages of 2.37Ga to 2.96Ga. The granitoids show a large variation in zircon Hf compositions with epsilon(Hf)(t) = -27.8 similar to -18.4 and two-stage model ages of 2.37Ga to 2.96Ga. Geochemistry and Sr-Nd-Hf isotopic compositions of the granitoids suggest that they are derived from an ancient continental crust such as the Archaean Taihua Group, but the zircon Hf compositions and the mafic magmatic enclaves in the granitoids may imply that juvenile component contribute to their formation. Acording to the petrography and regional geological features, the juvenile component are mainly mantle related material. Therefore, the formation of these granitoids could be interpreted as mixing/mingling of an underplated mantle-derived magma and its induced crustal-melted magma in a deep crust.
学科主题	火成岩岩石学
WOS关键词	LASER-ABLATION ; LU-HF ; DETRITAL ZIRCONS ; HENAN PROVINCE ; VOLCANIC-ROCKS ; TRACE-ELEMENT ; OROGENIC BELT ; CRATON ; SYSTEMATICS ; CONSTRAINTS
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000318829900004
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40021]
专题	中国地质科学院矿产资源研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China. 2.Chang An Univ, Fac Earth Sci & Resources, Xian 710054, Peoples R China. 3.China Univ Geosci, Beijing 100083, Peoples R China. 4.ECE, Inst Resource Survey & Assessment, Nanjing 210007, Jiangsu, Peoples R China. 5.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China. 6.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Ke ChangHui,Wang XiaoXia,Li JinBao,et al. Zircon U-Pb age, geochemistry and Sr-Nd-Hf isotopic geochemistry of the;intermediate-acid rocks from the Heishan-Mulonggou area in the southern;margin of North China Block[J]. ACTA PETROLOGICA SINICA,2013,29(3):781-800.
APA	Ke ChangHui,Wang XiaoXia,Li JinBao,Yang Yang,Qi QiuJu,&Zhou XiaoNing.(2013).Zircon U-Pb age, geochemistry and Sr-Nd-Hf isotopic geochemistry of the;intermediate-acid rocks from the Heishan-Mulonggou area in the southern;margin of North China Block.ACTA PETROLOGICA SINICA,29(3),781-800.
MLA	Ke ChangHui,et al."Zircon U-Pb age, geochemistry and Sr-Nd-Hf isotopic geochemistry of the;intermediate-acid rocks from the Heishan-Mulonggou area in the southern;margin of North China Block".ACTA PETROLOGICA SINICA 29.3(2013):781-800.