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山东半岛沿岸泻湖粘土矿物及其来源
CLAY MINERALS IN LAGOONS ALONG THE COAST OF SHANDONG PENINSULA AND THEIR SOURCES
【摘要】 对山东半岛沿岸7个泻湖的表层沉积物中的细颗粒成分中的粘土矿物进行了定性和半定量分析 ,并描述了矿物特征 ,发现粘土矿物的百分含量差别很大 ,其中蒙皂石的含量在地域上由西向东规则递减。泻湖与海水的交换状况对粘土组分有相当的影响 ,不久前封闭的泻湖的粘土矿物成分与未封闭的泻湖不同 ,显示了物源、物源成分的搬运距离及水体交换等因素的明显影响 ,表明了泻湖沉积物与环境动力及物源有密切关系
【Abstract】 Clay minerals from the fine grained surface sediments in the seven lagoons along the coast of Shandong Peninsula were analyzed qualitatively and semi quantitatively. And their characteristics were described. The analysis shows that the percentage of different lay minerals in the surface sediments of the lagoons varies greatly. The percentage of the Smectite decreased regularly from west to east along the coast. The result also shows that the exchange rate capability of the waters between the lagoons and the sea has a great influence on the composition of the clay minerals. There is a quite difference between the clay minerals assemblege of the laycons closed lately and that of the open ones. The result indicates the main influential factors on the clay composition are source sediment, source sediment transport distance and capability of water exchange, and also shows that the lagoon sediments have intimate relationship with environmental dynamic forces and source sediment.
【Key words】 Shandong Peninsula; Lagoon; Clay mineral; Percentage composition; Source sediment; Environmental dynamic;
- 【文献出处】 海洋科学 ,Marine Sciences , 编辑部邮箱 ,2002年06期
- 【分类号】P578
- 【被引频次】2
- 【下载频次】151