| 鸭绿江口及邻近浅海碎屑矿物特征与物源辨识 |
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| 引用本文： | 程岩,刘月,李富祥,刘敬伟,张亮,高建华.鸭绿江口及邻近浅海碎屑矿物特征与物源辨识[J].地理研究,2010,29(11):1950-1960. |
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| 作者姓名： | 程岩 刘月 李富祥 刘敬伟 张亮 高建华 |
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| 作者单位： | 1. 辽东学院城市建设学院,丹东,118003
2. 南京大学海岸与海岛开发教育部重点实验室,南京,210093 |
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| 基金项目： | 国家自然科学基金项目(40871019、40976051);辽东学院青年科研基金项目(2006-Z07) |
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| 摘 要： | 通过分析鸭绿江口及邻近浅海表层沉积物的碎屑矿物特征,讨论了表层沉积物中主要碎屑矿物的沿程变化、指示性矿物、特征指数方面的差异及其示踪意义。研究结果表明:鸭绿江口与邻近浅海的沉积物可能来自于不同的物源区;西水道的沉积保留了较多的鸭绿江历史沉积的特点;中水道沉积与现代河流相近;辽东浅滩的沉积物质来源以河流为主,兼有来自浅海的物质。
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| 关 键 词： | 碎屑矿物 鸭绿江口 物源辨识 |
| 收稿时间： | 2010-03-03 |
| 修稿时间： | 2010-05-17 |
Detrital mineral characteristics and material source identification in surface sediments of Yalu River estuary and adjacent waters |
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| CHENG Yan,LIU Yue,LI Fu-xiang,LIU Jing-wei,ZHANG Liang,GAO Jian-hua.Detrital mineral characteristics and material source identification in surface sediments of Yalu River estuary and adjacent waters[J].Geographical Research,2010,29(11):1950-1960. |
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| Authors: | CHENG Yan LIU Yue LI Fu-xiang LIU Jing-wei ZHANG Liang GAO Jian-hua |
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| Institution: | 1. Urban Construction College, Eastern Liaoning University, Dandong 118003, Liaoning, China;
2. Key Laboratory of Coast and Island Development of Ministry of Education, Nanjing University, Nanjing 210093, China |
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| Abstract: | The Yalu River is the boundary river between China and Democratic People's Republic of Korea. The characteristics of detrital minerals in surface sediments in the Yalu River estuary and its adjacent shallow seas were analyzed in this paper. Through discussing on the compositions, distribution and longitudinal variation of detrital minerals in surface sediments, interpreting the sedimentary environment of detrital minerals and the difference of indicative mineral and characteristic index as well as their trace significance, the results indicated that the surface sediments in the Yalu River estuary and its adjacent shallow seas probably came from different material source zones. For the surface sediments in Middle-river-way and the lower reaches of the Yalu River, their longitudinal variation of main detrital minerals is successive. They are similar to the sediment characteristics in the Aihe River in the lower reaches of the Yalu River in material source zones index, stable coefficient and ATi, which indicates that the sediment process in Middle-river-way and modern rivers have a close relationship. Although West-river-way and Middle-river-way are adjacent, the sediments in West-river-way and Shuifeng Reservoir are similar more or less, which indicates that West-river-way is the key river course, remaining the sediment characteristics before the reservoir was built in 1941. That the sediments in West-river-way most came from the shallow seas offers the obvious evidence that the sediments in shallow seas moved to land areas. The characteristic minerals and other indexes in shallow ford of Liaodong are between those of Middle-river-way and West-river-way, which indicates that its material resource most came from the Yalu River, and less came from shallow seas. The degree of influence from shallow seas needs a further study. |
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| Keywords: | detrital mineral Yalu River estuary material source identification |
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