Zircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China
文献类型：期刊论文
| 作者 | Zhao, Jun-Hong1; Zhou, Mei-Fu1; Yan, Dan-Ping2; Yang, Yue-Heng3; Sun, Min1 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2008-06-10 |
| 卷号 | 163期号:3-4页码:189-209 |
| 关键词 | zircon Hf isotope Neoproterozoic magmatism crustal growth active margins South China |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2007.11.003 |
| 文献子类 | Article |
| 英文摘要 | Voluminous Neoproterozoic igneous rocks along the western margin of the Yangtze Block, South China, provide an ideal opportunity for examining the nature of the mantle source, petrogenesis of the felsic plutons and processes and timing of crustal growth. The Dadukou, Tongde, Gaojiacun and Shaba mafic plutons, and Datian and Dajianshan adakitic plutons were selected for zircon Lu-Hf isotope analysis. Zircons from the mafic plutons have epsilon(Hf)(t) values ranging from 1.86 to 11.63, with average epsilon(Hf)(t) values of the different samples ranging from 4.78 +/- 0.42 to 7.60 +/- 1.1. Their single-stage model ages range from 0.86 to 1.28 Ga. The two adakitic plutons have epsilon(Hf)(t) values ranging from 2.26 to 11.68 and single-stage model ages from 0.86 to 1.24 Ga. Our data further confirm that the mafic plutons were extracted from depleted mantle sources, whereas the Datian and Dajianshan adakitic plutons were products of melting of a subducted oceanic slat). The arc-geochemical affinity, relatively high Nd-143/Nd-144 ratios and high zircon epsilon(Ht)(t) values, as well as the relatively young Hf single-stage model ages of these Neoproterozoic plutons suggest that the continental crustal growth in the region was related to oceanic subduction, rather than upwelling of a mantle plume in a rifting setting. The Neoproterozoic magmatism along the western margin of the Yangtze Block lasted more than 200 My, not show episodic emplacement and contrasting zircon Hf isotopes, suggesting that continental crustal growth in South China was continuously resulted from subduction. (C) 2007 Elsevier B.V. All rights reserved. |
| WOS关键词 | U-PB AGE ; CONTINENTAL-CRUST ; SICHUAN PROVINCE ; SW CHINA ; TECTONIC SIGNIFICANCE ; MAFIC INTRUSIONS ; NORTHERN MARGIN ; TRACE-ELEMENT ; OCEANIC-CRUST ; ND ISOTOPE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000256930500001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68822]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhao, Jun-Hong |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.China Univ Geosci, Fac Geol, Beijing, Peoples R China 3.Chinese Acad Sci, State Key Lab Lithosphere Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Jun-Hong,Zhou, Mei-Fu,Yan, Dan-Ping,et al. Zircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China[J]. PRECAMBRIAN RESEARCH,2008,163(3-4):189-209. |
| APA | Zhao, Jun-Hong,Zhou, Mei-Fu,Yan, Dan-Ping,Yang, Yue-Heng,&Sun, Min.(2008).Zircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China.PRECAMBRIAN RESEARCH,163(3-4),189-209. |
| MLA | Zhao, Jun-Hong,et al."Zircon Lu-Hf isotopic constraints on Neoproterozoic subduction-related crustal growth along the western margin of the Yangtze Block, South China".PRECAMBRIAN RESEARCH 163.3-4(2008):189-209. |
入库方式： OAI收割
来源：地质与地球物理研究所
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