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Crustal growth at similar to 2.5 Ga in the North China Craton: evidence from whole-rock Nd and zircon Hf isotopes in the Huai'an gneiss terrane

文献类型：期刊论文

作者Liu Fu1; Guo JingHui1; Lu XiaoPing2; Diwu ChunRong3
刊名CHINESE SCIENCE BULLETIN
出版日期2009-12-01
卷号54期号:24页码:4704-4713
关键词North China Craton Archean TTG gneisses zircon Nd-Hf isotope crustal growth
ISSN号1001-6538
DOI10.1007/s11434-009-0288-y
文献子类Article
英文摘要The Huai'an gneiss terrane mainly consists of TTG gneisses and dioritic gneisses. Laser in situ U-Pb dating of magmatic zircon cores indicates that protolith of these gneisses was formed at similar to 2.5 Ga. The TTG gneisses have positive epsilon(Nd)(t) values of 2.7 to 4.3, and most of the magmatic zircons have positive epsilon(Hf)(t) values of 2.0 to 8.3. These positive epsilon(Nd)(t) and epsilon(Hf)(t)values are both similar to those of the contemporaneous depleted mantle at 2.5 Ga. Moreover, the young Hf model ages of 2.44 to 2.73 Ga for the magmatic zircons are close to the timing of the zircons growth. The whole-rock epsilon(Nd)(t) values are lower in the dioritic gneisses (0.8 to 1.7) than in the TTG gneisses due to the involvement of ancient crust in its source. However, many magmatic zircons from the dioritic gneisses have similar epsilon(Hf)(t) values (2.0 to 7.9) to that of the coeval depleted mantle; their Hf model ages of 2.49 to 2.75 Ga are close to the U-Pb ages of zircons. The highest epsilon(Hf)(t) values are close to the value of the depleted mantle, and the relatively high epsilon(Hf)(t) values corresponds to the relatively young Hf model age. These Nd and Hf isotope features suggest that these two types of gneisses of the Huai'an gneiss terrane originated from the juvenile crust at ca. 2.5 Ga.
WOS关键词HIGH-PRESSURE GRANULITES ; U-PB AGES ; TRONDHJEMITE-GRANODIORITE TTG ; LU-HF ; CONTINENTAL-CRUST ; ANSHAN AREA ; SOUTH CHINA ; SUBDUCTED LITHOSPHERE ; LIAONING PROVINCE ; DETRITAL ZIRCONS
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000273155600025
出版者SCIENCE CHINA PRESS
资助机构National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; 40721062 ; 40721062 ; 40721062 ; 40721062 ; 40372089) ; 40372089) ; 40372089) ; 40372089) ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; 40721062 ; 40721062 ; 40721062 ; 40721062 ; 40372089) ; 40372089) ; 40372089) ; 40372089) ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; 40721062 ; 40721062 ; 40721062 ; 40721062 ; 40372089) ; 40372089) ; 40372089) ; 40372089) ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; National Natural Science Foundation of China(40730315 ; 40721062 ; 40721062 ; 40721062 ; 40721062 ; 40372089) ; 40372089) ; 40372089) ; 40372089)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70722]  
专题中国科学院地质与地球物理研究所
通讯作者Liu Fu
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Reg Geol & Mineral Resources Survey Jilin Prov, Changchun 130022, Peoples R China
3.NW Univ Xian, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714		 Liu Fu,Guo JingHui,Lu XiaoPing,et al. Crustal growth at similar to 2.5 Ga in the North China Craton: evidence from whole-rock Nd and zircon Hf isotopes in the Huai'an gneiss terrane[J]. CHINESE SCIENCE BULLETIN,2009,54(24):4704-4713.
APA Liu Fu,Guo JingHui,Lu XiaoPing,&Diwu ChunRong.(2009).Crustal growth at similar to 2.5 Ga in the North China Craton: evidence from whole-rock Nd and zircon Hf isotopes in the Huai'an gneiss terrane.CHINESE SCIENCE BULLETIN,54(24),4704-4713.
MLA Liu Fu,et al."Crustal growth at similar to 2.5 Ga in the North China Craton: evidence from whole-rock Nd and zircon Hf isotopes in the Huai'an gneiss terrane".CHINESE SCIENCE BULLETIN 54.24(2009):4704-4713.

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来源：地质与地球物理研究所

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