Zircon Hf isotopic composition and source characteristics of the Wudang Group in the Qinling orogenic belt, western Henan province.
文献类型：期刊论文
| 作者 | Zhu XiYan1,2; Chen FuKun3,4; Yang Li1,2; Wang Wei1,2; Hieu, Pham Trung1,2; Miao LaiCheng1; Zhang FuQin1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2009-11-01 |
| 卷号 | 25期号:11页码:3017-3028 |
| 关键词 | Qinling orogenic belt Wudang Group zircon Hf isotopic composition |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The metamorphused volcanic-sedimentary sequences of the Wudang Group belong to an important rock unit of the basement in the South Qinling block. Formation ages and geochemical features of the Wudang Group can provide essential information for understanding of the tectonic evolution of the Qinling orogenic belt. In this study, we report whole-rock Sm-Nd and zircon Lu-Hf isotopic composition of sedimentary rocks in the upper part and volcanic rocks in the lower part of the Wudang Group, and provide discussion on petrogenesis of the volcanic rocks and source characteristics of the sedimentary rocks. Zircon grains from the Wudang sedimentary rocks give initial epsilon(Hf) values ranging from -30 to +10, corresponding to model age values (t(DM2)) between about 1.0Ga and 3.2Ga, initial epsilon(Nd) values of whole-rocks vary from -4.0 to -6.0. The sedimentary sources originated from basement rocks of a Yangtze-affinity and volcanic rocks of the lower part of the Wudang Group. Initial e, values of zircon grains from the volcanic rocks vary from -35 to +15, corresponding to t(DM2) values of about 0.8Ga to 3.5Ga, but clustering around 1.5 similar to 1.8Ga and 2.2 similar to 2.4Ga. Initial epsilon(Nd) values of two quartz-keratophyre samples of volcanic rock are -9.2 and -10.7, different from the reported values for the Wudang basaltic-andesitic rocks exposed in Hubei Province, where most of the volcanic rocks have positive epsilon(Nd) values. Therefore, different origins can be proposed for different volcanic rock types of the Wudang Group. Those volcanic rocks characterized by low initial epsilon(Nd) and epsilon(Hf) values originated mainly from re-melting crustal material, while others have a broad range of initial epsilon(Hf) values (-35 to +15) or positive initial epsilon(Nd) values, which indicate significant contribution of mantle material or juvenile crustal rocks together with old crustal rocks to the magma(s) of the Wudang volcanic rocks. Evidence of Nd-Hf isotopic compositions and detrital zircon age patterns of the Wudang Group suggests that the South Qinling terrane of Yangtze-affinity probably underwent multi-stage history of crustal accretion and reworking during the Proterozoic time. |
| WOS关键词 | ULTRAHIGH-PRESSURE ECLOGITE ; LU-HF ; SOUTH CHINA ; CRUSTAL EVOLUTION ; MASS-SPECTROMETRY ; CONTINENTAL-CRUST ; YANGTZE BLOCK ; MANTLE ; ND ; GEOCHRONOLOGY |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000273455000030 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70924]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhu XiYan |
| 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.Chinese Acad Sci, Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 4.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu XiYan,Chen FuKun,Yang Li,et al. Zircon Hf isotopic composition and source characteristics of the Wudang Group in the Qinling orogenic belt, western Henan province.[J]. ACTA PETROLOGICA SINICA,2009,25(11):3017-3028. |
| APA | Zhu XiYan.,Chen FuKun.,Yang Li.,Wang Wei.,Hieu, Pham Trung.,...&Zhang FuQin.(2009).Zircon Hf isotopic composition and source characteristics of the Wudang Group in the Qinling orogenic belt, western Henan province..ACTA PETROLOGICA SINICA,25(11),3017-3028. |
| MLA | Zhu XiYan,et al."Zircon Hf isotopic composition and source characteristics of the Wudang Group in the Qinling orogenic belt, western Henan province.".ACTA PETROLOGICA SINICA 25.11(2009):3017-3028. |
入库方式： OAI收割
来源：地质与地球物理研究所
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