| Yangtze- and Taiwan-derived sediments on the inner shelf of East China Sea | |
Xu, Kehui1; Milliman, John D.2; Li, Anchun3; Liu, J. Paul4; Kao, Shuh-Ji5; Wan, Shiming3
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| 2009-10-15 | |
| 发表期刊 | CONTINENTAL SHELF RESEARCH
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| ISSN | 0278-4343 |
| 卷号 | 29期号:18页码:2240-2256 |
| 文章类型 | Article |
| 摘要 | X-ray diffraction (XRD) mineralogical and grain-size analyses indicate that inner continental shelf sediments in the East China Sea (ECS) represent a unique mixing of clays derived from the Yangtze River and silts/sands from small western Taiwanese rivers. Taiwanese (e g., Choshui) clays (< 2 mu m) display no smectite but the best illite crystallinity and are only distributed along southeastern Taiwan Strait. Both Yangtze and Taiwanese river clays are illite-dominated, but the poor illite crystallinity and the presence of smectite and kaolinite indicate that Taiwan Strait clays are mainly Yangtze-dominated. In contrast, medium silts (20-35 mu m) and very fine sands (63-90 mu m) in the Taiwan Strait are characterized by low feldspar/quartz, low K-feldspar/plagioclase and high kaolinite/quartz, indicating their provenance from Taiwanese rivers. Taiwanese silts and sands are introduced primarily by the way of typhoon-derived floods and transported northward by the Taiwan Warm Current during summer-fall months. Yangtze clays, in contrast, are widely dispersed southward about 1000 km to the western Taiwan Strait, transported by the China Coastal Current during winter-spring months Since most Taiwan Strait samples were collected in May 2006, clay results in this paper might only represent the winter-spring pattern of the dispersal of Yangtze sediments. (C) 2009 Elsevier Ltd. All rights reserved.; X-ray diffraction (XRD) mineralogical and grain-size analyses indicate that inner continental shelf sediments in the East China Sea (ECS) represent a unique mixing of clays derived from the Yangtze River and silts/sands from small western Taiwanese rivers. Taiwanese (e g., Choshui) clays (< 2 mu m) display no smectite but the best illite crystallinity and are only distributed along southeastern Taiwan Strait. Both Yangtze and Taiwanese river clays are illite-dominated, but the poor illite crystallinity and the presence of smectite and kaolinite indicate that Taiwan Strait clays are mainly Yangtze-dominated. In contrast, medium silts (20-35 mu m) and very fine sands (63-90 mu m) in the Taiwan Strait are characterized by low feldspar/quartz, low K-feldspar/plagioclase and high kaolinite/quartz, indicating their provenance from Taiwanese rivers. Taiwanese silts and sands are introduced primarily by the way of typhoon-derived floods and transported northward by the Taiwan Warm Current during summer-fall months. Yangtze clays, in contrast, are widely dispersed southward about 1000 km to the western Taiwan Strait, transported by the China Coastal Current during winter-spring months Since most Taiwan Strait samples were collected in May 2006, clay results in this paper might only represent the winter-spring pattern of the dispersal of Yangtze sediments. (C) 2009 Elsevier Ltd. All rights reserved. |
| 关键词 | Sediment Clay Mineralogy Yangtze River East China Sea Taiwan |
| 学科领域 | Oceanography |
| DOI | 10.1016/j.csr.2009.08.017 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000271694100008 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/3722 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Coastal Carolina Univ, Dept Marine Sci, Conway, SC 29528 USA 2.Coll William & Mary, Sch Marine Sci, Gloucester Point, VA USA 3.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 4.N Carolina State Univ, Dept MEAS, Raleigh, NC 27695 USA 5.Acad Sinica, Res Ctr Environm Changes, Taipei, Taiwan |
| 推荐引用方式 GB/T 7714 | Xu, Kehui,Milliman, John D.,Li, Anchun,et al. Yangtze- and Taiwan-derived sediments on the inner shelf of East China Sea[J]. CONTINENTAL SHELF RESEARCH,2009,29(18):2240-2256. |
| APA | Xu, Kehui,Milliman, John D.,Li, Anchun,Liu, J. Paul,Kao, Shuh-Ji,&Wan, Shiming.(2009).Yangtze- and Taiwan-derived sediments on the inner shelf of East China Sea.CONTINENTAL SHELF RESEARCH,29(18),2240-2256. |
| MLA | Xu, Kehui,et al."Yangtze- and Taiwan-derived sediments on the inner shelf of East China Sea".CONTINENTAL SHELF RESEARCH 29.18(2009):2240-2256. |
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