(一) 分析方法区内共分析83个站位的表层样和四个柱状样的28层次样,计111块样品。对全部样品进行了X射线衍射分析和绝大部分样品的差热分析,并对部分表层样和柱状样的底层样进行了电子显微镜研究。(二) 鉴定结果通过综合分析和研究,鉴定出区内的粘土矿物主要有伊利石、高岭石、绿泥石及蒙脱石,还有埃洛石、蛭石等(图5·6-1,2,3)。 (A) Analysis Methods A total of 83 samples of the surface area of ​​the station and four samples of 28 column-like samples were analyzed. X-ray diffraction analysis and differential thermal analysis of most of the samples were carried out on all the samples. Electron microscopy studies were also carried out on some sub-surface samples and columnar samples. (II) Identification Result Through comprehensive analysis and research, it is identified that the clay minerals in the area mainly include illite, kaolinite, chlorite and montmorillonite, and halloysite and vermiculite (Figure 5-6 1,2,3).