Petrogenesis of Daxiong pluton in western Gangdese, Tibet: zircon U-Pb dating and Hf isotopic constraints
文献类型：期刊论文
| 作者 | Zhou ChangYong1; Zhu DiCheng2; Zhao ZhiDan2; Xu JiFeng3; Wang LiQuan1; Chen HaiHong4; Xie LieWen5; Dong GuoChen2; Zhou Su2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 24期号:2页码:348-358 |
| 关键词 | zircon U-Pb age zircon Hf isotope petrogenesis Daxiong pluton Western Gangdese Tibet |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | LA-ICP-MS zircon U-Pb age, whole-rock major and trace element, Sr-Nd and zircon Hf isotopic compositions from the Daxiong pluton, western Cangdese are used to constrain its origin. The predominant lithology observed in Daxiong pluton is granodiorite, in which dioritic enclaves are well developed. Zircon U-Pb dating for one granodiorite sample yields an emplacement age of 107 +/- 1 Ma. Zircon I-If isotopic: analysis yields epsilon(Hf) ( t) values of - 1. 0 to + 3. 0, with two-stage model age ranging from 974 to 1226Ma. Granodiorites are silica enriched in composition ( SiO2 = 70. 65% similar to 71. 10%), with high contents of CaO ( 3. 21 % similar to 3.26%) and low contents of K2O (2.81 similar to 2.99%) and P2O5 (0.09%). Both granodiorite and dioritic enclave are medium-K calcalkaline, and exhibit similar epsilon(Nd) (t) values ( - 4. 6, and - 3. 2, respectively). Their two-stage model ages are identical, consistent with the zircon Hf isotope model age. Geochemical characteristics combined with field and petrographic observations show that the dioritic enclave can be considered as the mafic microgranular enclave. Our data indicate that an important magmatic mixing event probably occurred in middle-western Gangdese belt during the late of Early Cretaceous time. |
| WOS关键词 | NORTHEAST CHINA ; MAFIC ENCLAVES ; ROCKS ; GRANITE ; DISCRIMINATION ; ORIGIN ; MANTLE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000259117600014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68760]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhou ChangYong |
| 作者单位 | 1.Chengdu Inst Geol & Mineral Resources, Chengdu 610082, Peoples R China 2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 3.Chinese Acad Sci, State Key Lab Isotope Geochronol & Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 40037, Peoples R China 5.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 | Zhou ChangYong,Zhu DiCheng,Zhao ZhiDan,et al. Petrogenesis of Daxiong pluton in western Gangdese, Tibet: zircon U-Pb dating and Hf isotopic constraints[J]. ACTA PETROLOGICA SINICA,2008,24(2):348-358. |
| APA | Zhou ChangYong.,Zhu DiCheng.,Zhao ZhiDan.,Xu JiFeng.,Wang LiQuan.,...&Zhou Su.(2008).Petrogenesis of Daxiong pluton in western Gangdese, Tibet: zircon U-Pb dating and Hf isotopic constraints.ACTA PETROLOGICA SINICA,24(2),348-358. |
| MLA | Zhou ChangYong,et al."Petrogenesis of Daxiong pluton in western Gangdese, Tibet: zircon U-Pb dating and Hf isotopic constraints".ACTA PETROLOGICA SINICA 24.2(2008):348-358. |
入库方式： OAI收割
来源：地质与地球物理研究所
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