Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys
文献类型：期刊论文
| 作者 | Liu, WL ; Xia, B ; Zhong, Y ; Cai, JX ; Li, JF ; Liu, HF ; Cai, ZR ; Sun, ZL |
| 刊名 | INTERNATIONAL GEOLOGY REVIEW
 |
| 出版日期 | 2014 |
| 卷号 | 56期号:4页码:430-447 |
| 关键词 | Tibet Bangong Meso-Tethys ophiolites intra-oceanic subduction geochemistry geochronology |
| ISSN号 | 0020-6814 |
| 通讯作者 | liuweil@mail.sysu.edu.cn ; xiabin08@outlook.com |
| 中文摘要 | Subduction of the Bangong Meso-Tethys and collision between the Lhasa and Qiangtang blocks were important for the growth of Tibetan crust, as well as the development of super-large porphyry copper deposits in central Tibet. However, the initiation and closure timing, and nature and structure of the Bangong Meso-Tethys are still poorly constrained. Petrology, geochronology, and geochemistry of the Rebang Co and Julu ophiolites in the western part of the suture zone are used to constrain the tectonic history and structure of the Bangong Meso-Tethys. These two suites consist of ultramafic rocks, gabbro and diabase dikes, pillow basalts, and radiolarian cherts. Zircon U-Pb dating of zircon grains of gabbros yields well-defined weighted mean ages of 161.5 +/- 1.5 Ma and 103.8 +/- 3.9 Ma for the Rebang Co and Julu suites, respectively. Both of ophiolitic suites have mid-oceanic ridge basalt and island-arc tholeiite affinities, similar to back-arc basin crust. We suggest these suites formed above an intra-oceanic subduction zone at least during Middle Jurassic through mid-Cretaceous times. Along with coeval subduction beneath the southern Qiangtang margin, as well as fore-arc basin development, the Bangong Meso-Tethys has a complicated structure and history. Clearly, subduction in the Bangong Meso-Tethys was still active during mid-Cretaceous time and the Meso-Tethys did not close until Late Cretaceous time. |
| 学科主题 | Geology |
| 收录类别 | SCI |
| 资助信息 | National Nature Science Foundation of China [41372208]; China Geological Survey [1212011221105, 1212011121259]; National Key Basic Research Programme of China [2013CB429701] |
| 原文出处 | TAYLOR & FRANCIS INC |
| WOS记录号 | WOS:000330931500003 |
| 公开日期 | 2014-12-11 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10635]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, WL,Xia, B,Zhong, Y,et al. Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys[J]. INTERNATIONAL GEOLOGY REVIEW,2014,56(4):430-447. |
| APA | Liu, WL.,Xia, B.,Zhong, Y.,Cai, JX.,Li, JF.,...&Sun, ZL.(2014).Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys.INTERNATIONAL GEOLOGY REVIEW,56(4),430-447. |
| MLA | Liu, WL,et al."Age and composition of the Rebang Co and Julu ophiolites, central Tibet: implications for the evolution of the Bangong Meso-Tethys".INTERNATIONAL GEOLOGY REVIEW 56.4(2014):430-447. |
入库方式： OAI收割
来源：南海海洋研究所
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