【摘要】 <正> 粘土矿物是海洋沉积物的重要组成部分,对它的研究有一定的实际意义。因此,近年来对于海洋沉积物中粘土矿物的研究愈来愈为人们所重视。我们曾对黄海表层样品进行过初步分析。本文在对粘土矿物进行重新分析鉴定的基础上再作进一步的探讨。更多还原

【Abstract】 We have made a preliminary study of the clay minerals from the Huang-hai Sea sediment.In this paper,with an increased number of analysis stations,further research is conducted on the clay minerals.And the results of the X diffraction analysis,the differential thermal analysis,the infra-red absorption spectrum analysis and the electronic microscopic examination show that illte,chlorite,kaolinite and montmorillonite are the main minerals in the Huanghai Sea sediment.The distribution of clay minerals in this area follows no distinct patterns.After a comprehensive analysis of the triangular diagram,the orthogonal diagram and the X spectral line characteristics,we find that there exist in this area three types of clay mineral association: Type I being distributed around Chenshantou,with a high illite content and a low chlorite and kaolinte content;Type ********II being distributed to the south of Type *********I area and in the middle part of the North Huanghai Sea,with a lower montmorillonite content than that in Type ********I,which tallies with the results of the analysis of Huanghe River samples;Type*******III being distributed to the north of Type *******I area (except for Type *******II),with a low illite content and a high chlorite content.The distribution characteristics of the clay mineral association basically indicate the feature and source of the sediment.Type *******II,with its wide distribution,fine grain and high CaCO3content maintains a closer relationship with the Huanghe River sediment.Type I is of a coaser grain,and is influenced by the relic sediment,whereas Type *******II is influenced by the sediment of the Huanghe River and the northeastern coast of China.更多还原