Crustal growth and intracrustal recycling in the middle segment of the Trans-North China Orogen, North China Craton: a case study of the Fuping Complex
文献类型：期刊论文
| 作者 | Han, Bao-Fu1; Xu, Zhao1; Ren, Rong1; Li, Lin-Lin1; Yang, Jin-Hui2; Yang, Yue-Heng2 |
| 刊名 | GEOLOGICAL MAGAZINE
 |
| 出版日期 | 2012-07-01 |
| 卷号 | 149期号:4页码:729-742 |
| 关键词 | North China Craton TTG gneiss crustal growth intracrustal recycling U-Pb zircon age Hf isotopes |
| ISSN号 | 0016-7568 |
| DOI | 10.1017/S0016756811001014 |
| 文献子类 | Article |
| 英文摘要 | The most important crustal growth on Earth occurred at similar to 2.7 Ga, but the North China Craton (NCC) is characterized by prevalent development of similar to 2.5 Ga juvenile crust, with relatively rare records of similar to 2.7 Ga crustal growth. The Fuping Complex in the middle segment of the Trans-North China Orogen (TNCO) between the Eastern and Western blocks of the NCC is composed mainly of similar to 2.5 Ga Fuping tonalitic-trondhjemitic-granodioritic (TTG) gneisses and Longquanguan augen gneisses, similar to 2.1 Ga Nanying granitic gneisses and the Wanzi supracrustal rocks. Previous studies have suggested one major phase of crustal growth at similar to 2.5 Ga, possible intracrustal recycling at similar to 2.1 Ga and the presence of older rocks in the Fuping Complex, but there has been no record of similar to 2.7 Ga crustal growth. The Fuping TTG gneisses are dominated by stromatic migmatite, and new U-Pb dating of magmatic zircons from two stromatic migmatite samples yielded three different ages: (1) 2.75 Ga, which is the oldest age obtained from the Fuping TTG gneisses, (2) 2.54 Ga, which just falls in the published zircon U-Pb age range of 2.53 to 2.47 Ga for the Fuping TTG gneisses, and (3) 2.11 Ga, which is almost the same as the age of the Nanying granitic gneisses. Therefore, there are two generations of TTG gneisses in the Fuping Complex. Importantly, both of the 2.75 and 2.54 Ga zircons have the highest epsilon(Hf)(t) values, almost equal to the contemporaneous depleted mantle. This indicates high contributions of juvenile material to the two generations of TTG gneisses. In contrast, the 2.11 Ga zircons have apparently low epsilon(Hf)(t) values of -0.47 to +2.04, just falling in between 2.55 and 2.75 Ga continental crust values. This strongly suggests the reworking of the two generations of TTG gneisses at 2.1 Ga. Zircon U-Pb and Hf isotopes convincingly reveal two major phases of crustal growth in the Fuping Complex at similar to 2.7 and similar to 2.5 Ga, the same as in the northern and southern segments of the TNCO, and also confirm one major phase of intracrustal recycling at similar to 2.1 Ga, which may be responsible for the Nanying granitic gneisses. |
| WOS关键词 | WUTAISHAN GREENSTONE-BELT ; PB ZIRCON GEOCHRONOLOGY ; U-PB ; HF-ISOTOPE ; TECTONIC EVOLUTION ; LU-HF ; DETRITAL ZIRCONS ; CONTINENTAL GROWTH ; HENGSHAN COMPLEX ; PALEOPROTEROZOIC EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000304828900011 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| 资助机构 | National Science Foundation of China(40772141 ; National Science Foundation of China(40772141 ; China Geological Survey(1212010611803) ; China Geological Survey(1212010611803) ; 90714006) ; 90714006) ; National Science Foundation of China(40772141 ; National Science Foundation of China(40772141 ; China Geological Survey(1212010611803) ; China Geological Survey(1212010611803) ; 90714006) ; 90714006) ; National Science Foundation of China(40772141 ; National Science Foundation of China(40772141 ; China Geological Survey(1212010611803) ; China Geological Survey(1212010611803) ; 90714006) ; 90714006) ; National Science Foundation of China(40772141 ; National Science Foundation of China(40772141 ; China Geological Survey(1212010611803) ; China Geological Survey(1212010611803) ; 90714006) ; 90714006) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84310]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Han, Bao-Fu |
| 作者单位 | 1.Peking Univ, Sch Earth & Space Sci, Minist Educ, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Bao-Fu,Xu, Zhao,Ren, Rong,et al. Crustal growth and intracrustal recycling in the middle segment of the Trans-North China Orogen, North China Craton: a case study of the Fuping Complex[J]. GEOLOGICAL MAGAZINE,2012,149(4):729-742. |
| APA | Han, Bao-Fu,Xu, Zhao,Ren, Rong,Li, Lin-Lin,Yang, Jin-Hui,&Yang, Yue-Heng.(2012).Crustal growth and intracrustal recycling in the middle segment of the Trans-North China Orogen, North China Craton: a case study of the Fuping Complex.GEOLOGICAL MAGAZINE,149(4),729-742. |
| MLA | Han, Bao-Fu,et al."Crustal growth and intracrustal recycling in the middle segment of the Trans-North China Orogen, North China Craton: a case study of the Fuping Complex".GEOLOGICAL MAGAZINE 149.4(2012):729-742. |
入库方式： OAI收割
来源：地质与地球物理研究所
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