Studies on the U-Pb ages and Hf isotopes of zircons in the Aoyitake plagioclase granite, west Tarim.
文献类型：期刊论文
| 作者 | Li GuangWei1,2; Fang AiMin3; Wu FuYuan4; Liu XiaoHan1; Pan YuSheng4; Wang ShiGang5 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2009 |
| 卷号 | 25期号:1页码:166-172 |
| 关键词 | Western Tarim Aoyitake plagioclase granite U-Pb dating and Hf isotope |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | In situ U-Pb ages and I-If isotopes of Aoyitake plagioclase granite in west Kunlun were analyzed on the basis of mircro-district studies upon zircons selected from two samples. Zircon U-Pb ages of the two samples are 337.5 +/- 6.5Ma and 339.2 +/- 6.5Ma, respectively with their Th/U ratio of 0.3 similar to 1.0, which is consistent with the SHRIMP ages tested by Zhang et al. ( 2006). The Aoyitake plagioclase granite zircons, with their (176)Hf/(177)Hf ratios varying in 0.2829 similar to 0.2831, have high positive epsilon(Hf) (12 similar to 17) and depleted mantle model ages (averaged at 359.1 Ma), which is almost equal to their U-Pb ages. In the (176)Hf/(177)Hf-epsilon(Hf) discrimation diagrams, these zircons were plotted on the depleted mantle evolution line, indicating that this granite was derived from the new basaltic lower crust which is originated from depleted mantle, through a series of crystallization differentiations. Compared with current data from studies on the layered complex mass in Bachu- Kashgar zone, Aoyitake granite bears similar characteristics of its primary magma with the former, which were supposed to be originated from partial melting of the young basaltic lower crust related to the mantle plume action during the carboniferous Tianshan rift period. |
| WOS关键词 | LU-HF ; KUNLUN RANGE ; CHINA ; GEOCHRONOLOGY ; SYSTEMATICS ; SUBDUCTION ; INSIGHTS ; PLATEAU ; GROWTH |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000264381800014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71416]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li GuangWei |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 5.China Univ Min & Technol, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li GuangWei,Fang AiMin,Wu FuYuan,et al. Studies on the U-Pb ages and Hf isotopes of zircons in the Aoyitake plagioclase granite, west Tarim.[J]. ACTA PETROLOGICA SINICA,2009,25(1):166-172. |
| APA | Li GuangWei,Fang AiMin,Wu FuYuan,Liu XiaoHan,Pan YuSheng,&Wang ShiGang.(2009).Studies on the U-Pb ages and Hf isotopes of zircons in the Aoyitake plagioclase granite, west Tarim..ACTA PETROLOGICA SINICA,25(1),166-172. |
| MLA | Li GuangWei,et al."Studies on the U-Pb ages and Hf isotopes of zircons in the Aoyitake plagioclase granite, west Tarim.".ACTA PETROLOGICA SINICA 25.1(2009):166-172. |
入库方式： OAI收割
来源：地质与地球物理研究所
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