Precambrian evolution of the Quanji Block, northeastern margin of Tibet: Insights from zircon U-Pb and Lu-Hf isotope compositions
文献类型：期刊论文
| 作者 | Chen, Nengsong1,2; Gong, Songlin1; Sun, Min2; Li, Xiaoyan1; Xia, Xiaoping2; Wang, Qinyan1; Wu, Fuyuan3; Xu, Ping3 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2009-07-01 |
| 卷号 | 35期号:3-4页码:367-376 |
| 关键词 | Zircon U-Pb and Lu-Hf isotopes Migmatite Protolith Crustal evolution Quanji block Northeastern Tibetan Plateau |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2008.10.004 |
| 文献子类 | Article |
| 英文摘要 | The Quanji Block, a cratonic fragment, has been discovered between the north Qaidam HP-UHP metamorphic belt and the Qilian orogenic belt in northwestern China. This fragment has a pre-Neoproterozoic crystalline basement overlain unconformably by Neoproterozoic, Paleozoic and Mesozoic sedimentary strata. Pervasive anatexis of the basement produced extensive leucosomes in mafic and felsic migmatites. Zircons from the leucosomes yielded upper intercept and weighted mean(207)Pb/Pb-206 ages of similar to 1950 Ma, indicating that anatexis occurred in the late Paleoproterozoic, during regional high-grade metamorphism. Hf model ages (T-DM2) for these zircons suggest that protoliths of the felsic and mafic migmatites had crustal residence time of similar to 2.80 and similar to 2.65 Ga, respectively. The basement rocks of the Quanji Block are compositionally similar to those of the Yangtze Craton, and may have been involved in assembly of the late Paleoproterozoic global supercontinent, Columbia. (C) 2008 Elsevier Ltd. All rights reserved. |
| WOS关键词 | NORTH CHINA CRATON ; EPISODIC CONTINENTAL GROWTH ; ULTRAHIGH-PRESSURE ECLOGITE ; ARCHEAN CRUSTAL EVOLUTION ; SOUTH CHINA ; DEPLETED MANTLE ; YANGTZE CRATON ; NW CHINA ; MESOPROTEROZOIC SUPERCONTINENT ; GEOLOGICAL SIGNIFICANCE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000266895800013 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71124]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chen, Nengsong |
| 作者单位 | 1.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Hubei Province, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Nengsong,Gong, Songlin,Sun, Min,et al. Precambrian evolution of the Quanji Block, northeastern margin of Tibet: Insights from zircon U-Pb and Lu-Hf isotope compositions[J]. JOURNAL OF ASIAN EARTH SCIENCES,2009,35(3-4):367-376. |
| APA | Chen, Nengsong.,Gong, Songlin.,Sun, Min.,Li, Xiaoyan.,Xia, Xiaoping.,...&Xu, Ping.(2009).Precambrian evolution of the Quanji Block, northeastern margin of Tibet: Insights from zircon U-Pb and Lu-Hf isotope compositions.JOURNAL OF ASIAN EARTH SCIENCES,35(3-4),367-376. |
| MLA | Chen, Nengsong,et al."Precambrian evolution of the Quanji Block, northeastern margin of Tibet: Insights from zircon U-Pb and Lu-Hf isotope compositions".JOURNAL OF ASIAN EARTH SCIENCES 35.3-4(2009):367-376. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。