Age, geochemistry and petrogenesis of the cumulate gabbro in Tahe, northern Da Hinggan Mountain.
文献类型：期刊论文
| 作者 | Zhou, CY; Wu, FY; Ge, WC; Sun, DY; Rahman, AAA; Zhang, JH; Cheng, RY |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2005-05-01 |
| 卷号 | 21期号:3页码:763-775 |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | In this paper, geochemical data of the major and trace elements, and Hf isotope are reported for the Tahe cumulate gabbro exposed in the northern Da Hinggan Mountain. Basen on these data, its petrogenesis, protolith and tectonic implications are discussed in detail. The Tahe cumulate gabbro, characterized by low SiO2 (42.59 similar to 47.4wt. %), TiO2 ( < 0.5wt. %), P2O5 ( < 0.1 wt. %) and high Al2O3 (15.9 similar to 32.9 wt. %), CaO (11.7 similar to 17.1 wt. %), is enriched in large ion lithophile elements (LILE) and depleted in high field strength elements (HFSE), showing the similar geochemical characteristics to the gabbros formed in the active continental margin or island arc. Zircon laser ablation ( LA) -ICP-MS U-Pb analyses indicated that the Tahe gabbro was emplaced at 333 +/- 8 Ma with negative epsilon(Hf) (t) values of -2 similar to -5. Therefore, it is concluded that the Tahe gabbroic magma was derived from partial melting of the mantle pyroxenite in the enriched lithospheric mantle or lower crust which was metasomatized by fluid released from the subducted slab. Hence, the occurrence of the Tahe cumulate gabbro indicates that a subduction process was conducted beneath this area at similar to 330Ma, which was considered to be related to the assembly of the Songnen and Xing' an blocks. |
| WOS关键词 | TECTONIC IMPLICATIONS ; CHINA ; ORIGIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000231179000016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/65136]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhou, CY |
| 作者单位 | 1.Jilin Univ, Coll Earth Sci, Changchun 130026, Peoples R China 2.Univ Juba, Dept Geol & Min, Khartoum 3211, Sudan 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, CY,Wu, FY,Ge, WC,et al. Age, geochemistry and petrogenesis of the cumulate gabbro in Tahe, northern Da Hinggan Mountain.[J]. ACTA PETROLOGICA SINICA,2005,21(3):763-775. |
| APA | Zhou, CY.,Wu, FY.,Ge, WC.,Sun, DY.,Rahman, AAA.,...&Cheng, RY.(2005).Age, geochemistry and petrogenesis of the cumulate gabbro in Tahe, northern Da Hinggan Mountain..ACTA PETROLOGICA SINICA,21(3),763-775. |
| MLA | Zhou, CY,et al."Age, geochemistry and petrogenesis of the cumulate gabbro in Tahe, northern Da Hinggan Mountain.".ACTA PETROLOGICA SINICA 21.3(2005):763-775. |
入库方式： OAI收割
来源：地质与地球物理研究所
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