| LI Jun,GAO Jianhua,WANG Yaping,LI Yan,BAI Fenglong,CEES Laban. 2012. Distribution and dispersal pattern of clay minerals in surface sediments, eastern Beibu Gulf, South China Sea. Acta Oceanologica Sinica, (2):78－87 |
| Distribution and dispersal pattern of clay minerals in surface sediments, eastern Beibu Gulf, South China Sea |
| Distribution and dispersal pattern of clay minerals in surface sediments, eastern Beibu Gulf, South China Sea |
| Received:December 01, 2010 Revised:July 19, 2011 |
| DOI：10.1007/s13131-012-0194-z |
| Key words:clay minerals sediment source analysis sediment dispersal Beibu Gulf |
| 中文关键词: clay minerals sediment source analysis sediment dispersal Beibu Gulf |
| 基金项目:The National Natural Science Foundation of China under contract Nos 40976036, 40976051 and 40576023; Chinese Offshore Investigation and Assessment Project under contract No. 908-01-ST09; Asia Faculty for China EVD Project under contract No. AF06/CH/23. |
| Author Name | Affiliation | E-mail | | LI Jun | Qingdao Institute of Marine Geology, Qingdao 266071, China
MLR Key laboratory of marine resources and environments, Qingdao 266071, China | qdlijun@cgs.cn | | GAO Jianhua | Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China | | | WANG Yaping | Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China | | | LI Yan | Joint Key Laboratory of Coastal Study(XMU & FJIO), Xiamen University, Xiamen 361005, China | | | BAI Fenglong | Qingdao Institute of Marine Geology, Qingdao 266071, China
MLR Key laboratory of marine resources and environments, Qingdao 266071, China | | | CEES Laban | Deltares, AL Utrecht 3508, The Netherlands | |
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| Abstract: |
| Clay minerology of sediments are useful in determining distribution, sources and dispersal routes of fine-grained sediments. In the present paper, clay minerals of surface sediments throughout the eastern part of Beibu Gulf has been investigated to reveal sources and transport of detrital finegrained sediments. Four distinct clay mineral suites were observed from cluster analysis of clay mineral compositions of the samples. From the distribution pattern of clay minerals, we conclude that kaolinte in the eastern gulf is mainly derived from South China Landmass; Smectite could not be transported mainly by surface current from north-western Hainan Island, and maybe minor portion of it from Red River; Illite is mainly transported by the currents from South China Sea. Chlorite has two sources, namely South China Sea and South China Landmass. The Zhujiang River derived sediments could not be one of the sources for the clay mineral here, because of very different composition and ratios. The distribution pattern of clay minerals in the eastern Beibu Gulf is mainly controlled by fine-grained sediment source and local currents. The Silt/Clay, Smectite/Kaolinte, and Smetite/(Chlorite+Illite) ratios could be used as indicators of fine-grained sediment dispersal in the gulf. |
| 中文摘要: |
| Clay minerology of sediments are useful in determining distribution, sources and dispersal routes of fine-grained sediments. In the present paper, clay minerals of surface sediments throughout the eastern part of Beibu Gulf has been investigated to reveal sources and transport of detrital finegrained sediments. Four distinct clay mineral suites were observed from cluster analysis of clay mineral compositions of the samples. From the distribution pattern of clay minerals, we conclude that kaolinte in the eastern gulf is mainly derived from South China Landmass; Smectite could not be transported mainly by surface current from north-western Hainan Island, and maybe minor portion of it from Red River; Illite is mainly transported by the currents from South China Sea. Chlorite has two sources, namely South China Sea and South China Landmass. The Zhujiang River derived sediments could not be one of the sources for the clay mineral here, because of very different composition and ratios. The distribution pattern of clay minerals in the eastern Beibu Gulf is mainly controlled by fine-grained sediment source and local currents. The Silt/Clay, Smectite/Kaolinte, and Smetite/(Chlorite+Illite) ratios could be used as indicators of fine-grained sediment dispersal in the gulf. |
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