Subduction contribution to the magma source of the Okinawa Trough-Evidence from boron isotopes
文献类型：期刊论文
| 作者 | Zhang, Xia1; Zhai, Shikui1; Yu, Zenghui1; Guo, Kun2,3; Wang, Shujie2 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2019 |
| 卷号 | 54期号:1页码:605-613 |
| 关键词 | boron isotope Okinawa Trough subduction components volcanic rocks |
| ISSN号 | 0072-1050 |
| DOI | 10.1002/gj.3209 |
| 通讯作者 | Zhai, Shikui(zhai2000@ouc.edu.cn) |
| 英文摘要 | Boron (B) has been an excellent geochemical tracer for the investigation of magmatism in arcs and back-arc basins, due to its high fluid mobility and distinct isotope compositions in the mantle wedge and subducting slabs. In this study, B isotope compositions of the volcanic rocks collected from the northern, middle, and southern Okinawa Trough were determined to discuss the sources of B in the magma and assess the contribution of subduction components to the magma source. The results show that B in the volcanic rocks from the Okinawa Trough are mainly from the underlying mantle wedge but influenced by the fluids derived from the subducted slab. Compared with volcanic rocks from the middle Okinawa Trough, samples from the southern Okinawa Trough are generated from the source with larger proportion of subduction components. For the volcanic rocks from the northern Okinawa Trough, the influence of the subduction components is the most significant and the proportion of slab-derived B in the magma reaches up to 30%. It is estimated that the subduction components are composed of altered oceanic crust/serpentinite fluid and sediment fluid with the proportion of 94:6. The B-rich fluid, loaded by cold and fast dipping slab, released into overlying mantle wedge resulting in partial melting of mantle is the genetic mechanism of B-rich volcanic rocks in the Okinawa Trough. |
| 资助项目 | National Key Basic Research Program of China[2013CB429702] ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM-KF201707] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000455038100039 |
| 出版者 | WILEY |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/160682]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Zhai, Shikui |
| 作者单位 | 1.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Tech, Minist Educ, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xia,Zhai, Shikui,Yu, Zenghui,et al. Subduction contribution to the magma source of the Okinawa Trough-Evidence from boron isotopes[J]. GEOLOGICAL JOURNAL,2019,54(1):605-613. |
| APA | Zhang, Xia,Zhai, Shikui,Yu, Zenghui,Guo, Kun,&Wang, Shujie.(2019).Subduction contribution to the magma source of the Okinawa Trough-Evidence from boron isotopes.GEOLOGICAL JOURNAL,54(1),605-613. |
| MLA | Zhang, Xia,et al."Subduction contribution to the magma source of the Okinawa Trough-Evidence from boron isotopes".GEOLOGICAL JOURNAL 54.1(2019):605-613. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。