| Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances | |
Xu Fangjian1,2,3; Li Anchun1; Li Tiegang1 ; Xu Kehui4; Chen Shiyue2; Qiu Longwei2; Cao Yingchang2; Li, AC (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
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| 2011-07-01 | |
| 发表期刊 | JOURNAL OF RARE EARTHS
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| ISSN | 1002-0721 |
| 卷号 | 29期号:7页码:702-709 |
| 文章类型 | Article |
| 摘要 | Gravity core EC2005, located in the mud wedge off the Zhejiang-Fujian coast in the inner shelf of the East China Sea (ECS), was analyzed for its lithology, grain size, rare earth elements (REE) and AMS(14)C dating. Results revealed high-resolution paleoenvironmental evolution and multiple switches of sediment provenances in the inner shelf of ECS. The lithology, grain size and REE concentrations of sediments varied significantly down the core. Mean grain size ranged from 8 to 121 mu m, and the values of Sigma REE were 152.8-227.9 mu g/g. The chondrite- and shale-normalized REE patterns indicated their similarity to the terrigenous sediments in the study area. Between 17.3-12.3 ka BP the sediments in the inner shelf of ECS were mainly originated from local drainage basins. The source then gradually switched to the Yangtze River between 12.3 and 9.8 ka BP. Since about 10-9.8 ka BP, the sediments in the study area were dominantly derived from the Yangtze River. The continuous rising of sea level and formation of coastal current along the inner shelf played a key role in the switches of sediment provenances.; Gravity core EC2005, located in the mud wedge off the Zhejiang-Fujian coast in the inner shelf of the East China Sea (ECS), was analyzed for its lithology, grain size, rare earth elements (REE) and AMS(14)C dating. Results revealed high-resolution paleoenvironmental evolution and multiple switches of sediment provenances in the inner shelf of ECS. The lithology, grain size and REE concentrations of sediments varied significantly down the core. Mean grain size ranged from 8 to 121 mu m, and the values of Sigma REE were 152.8-227.9 mu g/g. The chondrite- and shale-normalized REE patterns indicated their similarity to the terrigenous sediments in the study area. Between 17.3-12.3 ka BP the sediments in the inner shelf of ECS were mainly originated from local drainage basins. The source then gradually switched to the Yangtze River between 12.3 and 9.8 ka BP. Since about 10-9.8 ka BP, the sediments in the study area were dominantly derived from the Yangtze River. The continuous rising of sea level and formation of coastal current along the inner shelf played a key role in the switches of sediment provenances. |
| 关键词 | Last Deglaciation Inner Shelf Of The East China Sea Grain Size Sediment Provenance Rare Earth Elements |
| 学科领域 | Chemistry |
| DOI | 10.1016/S1002-0721(10)60526-1 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000293279800017 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11521 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Li, AC (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.China Univ Petr, Sch Geosci, Qingdao 266555, Peoples R China 3.China Univ Petr, Key Lab Shandong Prov Reservoir Geol, Dongying 257061, Peoples R China 4.Coastal Carolina Univ, Dept Marine Sci, Conway, SC USA |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xu Fangjian,Li Anchun,Li Tiegang,et al. Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances[J]. JOURNAL OF RARE EARTHS,2011,29(7):702-709. |
| APA | Xu Fangjian.,Li Anchun.,Li Tiegang.,Xu Kehui.,Chen Shiyue.,...&Li, AC .(2011).Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances.JOURNAL OF RARE EARTHS,29(7),702-709. |
| MLA | Xu Fangjian,et al."Rare earth element geochemistry in the inner shelf of the East China Sea and its implication to sediment provenances".JOURNAL OF RARE EARTHS 29.7(2011):702-709. |
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