Zircon U-Pb ages and Hf isotopes and their geological significance of the Miyun rapakivi granites from Beijing, China.
文献类型：期刊论文
| 作者 | Yang, JH; Wu, FY; Liu, XM; Xie, LW |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2005-11-01 |
| 卷号 | 21期号:6页码:1633-1644 |
| 关键词 | Rapakivi Zircon U-pb Age Hf Isotope Paleoproterozoic North China Craton |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The Miyun pluton, a typical A-type rapakivi pluton, is located in the eastern North China Craton and is mainly composed of rapakivi granite and porphyric biotite granites. Zircon LA-ICPMS U-Pb dating gives that the emplacement ages of Miyun rapakivi granites are 1681 +/- 10Ma and 1679 +/- 10Ma, whereas, their host gneiss formed at 2521 +/- 14Ma. The mean epsilon(Hf)(t) value of zircons from Archean gneiss is about + 4.5, indicating the protolith of gneiss was derived from a depleted mantle source. It suggests that the 2.5 Ga is an important period of crustal growth of the North China Craton. The zircons in the rapakivi granites have epsilon(Hf)(t) value of -5.0, indicating that the rapakivi granites were derived from a crustal source. The two-stage model ages (T-DM2) of rapakivi granites are about 2.6 to 2.8 Ga, similar to those of host Archean gneisses, indicating that the rapakivi granites were derived from partial melting of the crust formed during Late Archean. The Miyun rapakivi granites were emplaced in all intra-plate extensional setting, which may be related to breakup of Paleoproterozoic Columbia supercontinent. |
| WOS关键词 | A-TYPE GRANITES ; SOUTHEASTERN AUSTRALIA ; CRUSTAL EVOLUTION ; LU-HF ; CONSTRAINTS ; MAGMATISM ; COMPLEX ; ORIGIN ; CRATON ; PETROGENESIS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000234692900011 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65400]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang, JH |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithspher Evolut, Beijing 100029, Peoples R China 2.NW Univ Xian, Dept Geol, Key Lab Continental Dynam, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, JH,Wu, FY,Liu, XM,et al. Zircon U-Pb ages and Hf isotopes and their geological significance of the Miyun rapakivi granites from Beijing, China.[J]. ACTA PETROLOGICA SINICA,2005,21(6):1633-1644. |
| APA | Yang, JH,Wu, FY,Liu, XM,&Xie, LW.(2005).Zircon U-Pb ages and Hf isotopes and their geological significance of the Miyun rapakivi granites from Beijing, China..ACTA PETROLOGICA SINICA,21(6),1633-1644. |
| MLA | Yang, JH,et al."Zircon U-Pb ages and Hf isotopes and their geological significance of the Miyun rapakivi granites from Beijing, China.".ACTA PETROLOGICA SINICA 21.6(2005):1633-1644. |
入库方式： OAI收割
来源：地质与地球物理研究所
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