The geochemical characteristics of fore-arc ophiolite from Dingqing area, Tibet.
文献类型：期刊论文
| 作者 | Liu, WB; Qian, Q; Yue, GL; Li, QS; Zhang, Q; Zhou, MF |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2002-07-01 |
| 卷号 | 18期号:3页码:392-400 |
| 关键词 | ophiolite boninite geochemistry fore-arc setting Tibet Dingqing |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Dingqing ophiolite lies in the eastern part of Bagonghu-Dingqing-Nujiang ophiolite belt. Dingqing ophiolite is mainly composed of peridotite, accumulate, gabbro, diabase and plagioclase, and the peridotite in Dingqing ophiolite is the largest one in the scale in the whole belt. The radiolarian fossils in the silicalite overlying the ophiolite sequence is recognized as Norian of the early Jurassic and late Triassic age. The middle Jurassic sandstone and conglomerate unconformably cover above the ophiolite. The Dingqing ophiolite therefore formed in the late Triassic-early Jurassic age and emplaced before middle Jurassic age. The Dingqing ophiolite belongs to boninite series, which is characteristic of enrichment in Si, Mg and LILE and depletion of HFSE (Ti, P, Zr, Y, Yb and Nb). The REE patterns of the accumulate, gabbro and diabase are all U-shape, implying that the Dingqing boninite is derived from depleted mantle source with the mixture of slab-derived fluid. The geochemical characteristics of the Dingqing boninite are similar to those of Tertiary boninite in the western Pacific, but totally different from those of MORB, indicating that Dingqing boninite is formed in the fore-are setting, and belongs to fore-arc ophiolite. |
| WOS关键词 | LAVAS ; PETROGENESIS ; CONSTRAINTS ; PETROLOGY ; BASALTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000177516200015 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77351]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, WB |
| 作者单位 | 1.Bur Explorat & Exploitat Geol Resources, Reg Geol Surveying Party, Pingdingsan 467021, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, WB,Qian, Q,Yue, GL,et al. The geochemical characteristics of fore-arc ophiolite from Dingqing area, Tibet.[J]. ACTA PETROLOGICA SINICA,2002,18(3):392-400. |
| APA | Liu, WB,Qian, Q,Yue, GL,Li, QS,Zhang, Q,&Zhou, MF.(2002).The geochemical characteristics of fore-arc ophiolite from Dingqing area, Tibet..ACTA PETROLOGICA SINICA,18(3),392-400. |
| MLA | Liu, WB,et al."The geochemical characteristics of fore-arc ophiolite from Dingqing area, Tibet.".ACTA PETROLOGICA SINICA 18.3(2002):392-400. |
入库方式： OAI收割
来源：地质与地球物理研究所
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