| Rare earth element geochemistry of sediments from the southern Okinawa Trough since 3 ka: Implications for river-sea processes and sediment source | |
Hu, Siyi1,3 ; Zeng, Zhigang1,2,3,4; Fang, Xue1,3; Zhu, Bowen1,3; Li, Xiaohui1; Chen, Zuxing1
| |
| 2019 | |
| 发表期刊 | OPEN GEOSCIENCES
 |
| ISSN | 2391-5447 |
| 卷号 | 11期号:1页码:929-947 |
| 通讯作者 | Zeng, Zhigang([email protected]) |
| 摘要 | The sediment sources in the southern Okinawa trough (SOT) are still controversial and few studies have focused on the effects of transport processes on the elemental composition of initial terrigenous materials. Here we present rare earth element (REE) and trace element data on siliciclastic sediments from C-14 age-dated Core S3, which was collected from the SOT, to provide reliable evidence for illustrating the modified effects of marine environments on terrigenous sediments deposited at different stages and exposing changes in sediment source over the past 3 ka. Compared with bulk sediments, the siliciclastic sediments in S3 have more variable REE fractionation parameters and lower middle REE (MREE) contents. Our REE data indicate that during river-sea processes, MREE-enriched fractions such as Fe-Mn oxides and carbonate were added to the original terrigenous sediments before deposition, weakening the degree of REE fractionation in the initial sediments; thus, care should be taken when using REE data from bulk samples to decipher source changes. The temporal changes in sediment source in S3 can be broadly identified based on the REE fractionation parameters of the residual fractions, and the results are largely consistent with the findings obtained by heavy mineral examinations. Units 1 and 3 are dominated by reworked shelf sediments of Changjiang origin, while the proportion of Taiwan-derived sediment is notably higher in Units 2 and 4. The sediment flux of Taiwan origin in the SOT was much smaller than previously thought. Huanghe-derived sediments and volcanic materials did not contribute significantly to the late Holocene sedimentation in the SOT. The large variations in sediment sources in S3 were possibly caused by changes in transport patterns driven by time-dependent changes in oceanic currents. |
| 关键词 | Rare earth element Sediment source Southern Okinawa Trough River-sea processes |
| DOI | 10.1515/geo-2019-0072 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Programme on Global Change and Air-Sea Interaction[GASI-GEOGE-02]###769; International Partnership Program of Chinese Academy of Sciences[133137KYSB20170003]###46; National Special Fund for the 13th Five Year Plan of COMRA[DYI35-G2-01-02]###3661; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061]###47; National Basic Research Program of China[2013CB429700]###86; National Natural Science Foundation of China[91958213]###3662; National Natural Science Foundation of China[41325021]###42; Aoshan Talents Program###288; Qingdao National Laboratory for Marine Science and Technology[2015ASTP-0S17]###49; Qingdao National Laboratory for Marine Science and Technology[2015ASKJ03]###50; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13]###51; Innovative Talent Promotion Program[2012RA2191]###52; Scientific and Technological Innovation Project###54; National Programme on Global Change and Air-Sea interaction[GASI-GEOGE-02]; International Partnership Program of Chinese Academy of Sciences[133137KYSB20170003]; National Special Fund for the 13th Five Year Plan of COMRA[DYI35-G2-01-02]; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061]; National Basic Research Program of China[2013CB429700]; National Natural Science Foundation of China[91958213]; National Natural Science Foundation of China[41325021]; AoShan Talents Program; Qingdao National Laboratory for Marine Science and Technology[2015ASTP-0S17]; Qingdao National Laboratory for Marine Science and Technology[2015ASKJ03]; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13]; Innovative Talent Promotion Program[2012RA2191]; Scientific and Technological Innovation Project |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000507245200001 |
| 出版者 | SCIENDO |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/164407 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Zeng, Zhigang |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 通讯作者单位 | 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 | Hu, Siyi,Zeng, Zhigang,Fang, Xue,et al. Rare earth element geochemistry of sediments from the southern Okinawa Trough since 3 ka: Implications for river-sea processes and sediment source[J]. OPEN GEOSCIENCES,2019,11(1):929-947. |
| APA | Hu, Siyi,Zeng, Zhigang,Fang, Xue,Zhu, Bowen,Li, Xiaohui,&Chen, Zuxing.(2019).Rare earth element geochemistry of sediments from the southern Okinawa Trough since 3 ka: Implications for river-sea processes and sediment source.OPEN GEOSCIENCES,11(1),929-947. |
| MLA | Hu, Siyi,et al."Rare earth element geochemistry of sediments from the southern Okinawa Trough since 3 ka: Implications for river-sea processes and sediment source".OPEN GEOSCIENCES 11.1(2019):929-947. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| [23915447 - Open Geo（13449KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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。
修改评论