| Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific | |
| Liu Yuhao1,2,4; Zhang Guoliang1,2,3,5; Zhang Ji1,2,4; Wang Shuai1,2,4 | |
| 2020-07-01 | |
| 发表期刊 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| ISSN | 2096-5508 |
| 卷号 | 38期号:4页码:1201-1214 |
| 通讯作者 | Zhang Guoliang(zhangguoliang@qdio.ac.cn) |
| 摘要 | The alkaline oceanic island basalts (OIBs) with under-saturated SiO(2)and high contents of CaO and alkaline are usually attributed to mantle sources different from typical tholeiitic OIBs. Based on the results of high pressure and temperature experiment study, the genesis of silica under-saturated alkaline basaltic melts could be explained by the role of CO2, thus, the genetic relationship of alkaline basalts with CO(2)has become a topic of relevance because it is closely related to the deep carbon cycle. The Magellan Seamount chain in the West Pacific Seamount Province has wide distribution of alkali basalts. For the first time, we collected alkaline basalt samples from the Kocebu Seamount of the Magellan Seamount chain and found that magmatic apatites widely occur in the less evolved volcanic rock samples, and the high contents of phosphorus should be a feature of the alkaline OIBs of the Magellan Seamounts. Compared with typical OIBs, these alkaline volcanic rocks have higher CaO and P2O5, lower SiO(2)content, negative anomaly of high field strength elements (HFSEs), more distinctly negative anomaly of potassium (K) and the ubiquity of titanaugite, indicating a CO2-rich mantle source. Based on the relatively high K2O and TiO(2)contents and La/Yb ratio and low MgO content of these alkaline rocks, we suggest that the volcanic rocks of the Magellan Seamounts are originated from carbonated eclogites derived possibly from ancient subducted altered oceanic crust. |
| 关键词 | alkaline oceanic island basalts (OIBs) carbonatite geochemistry mantle source Magellan Seamounts |
| DOI | 10.1007/s00343-020-0013-x |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| WOS类目 | Limnology ; Oceanography |
| WOS记录号 | WOS:000551529700018 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/168051 |
| 专题 | 海洋地质与环境重点实验室 深海极端环境与生命过程研究中心 |
| 通讯作者 | Zhang Guoliang |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266000, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China |
| 第一作者单位 | 深海极端环境与生命过程研究中心; 中国科学院海洋研究所 |
| 通讯作者单位 | 深海极端环境与生命过程研究中心; 中国科学院海洋研究所; 中国科学院海洋大科学研究中心 |
| 推荐引用方式 GB/T 7714 | Liu Yuhao,Zhang Guoliang,Zhang Ji,et al. Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020,38(4):1201-1214. |
| APA | Liu Yuhao,Zhang Guoliang,Zhang Ji,&Wang Shuai.(2020).Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,38(4),1201-1214. |
| MLA | Liu Yuhao,et al."Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount, Magellan Seamount chain in the western Pacific".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 38.4(2020):1201-1214. |
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| Geochemical constrai（1954KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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