以贵州遵义和平坝红土剖面为例 ,利用野外观察和室内分析测试方法 ,对碳酸盐岩风化壳岩土界面粘土层进行了系统研究。研究发现界面土层是由紫、红、棕、黄、褐、黑、灰、白等纹层状杂色粘土组成 ,其矿物成分除了含有与上部土层相似的高岭石或伊利石之外 ,还存在着新生不稳定的蛭石、绿泥石、蒙脱石、埃洛石及其间层矿物。向地表它们将转化为较稳定的其它粘土矿物 Taking the Zunyi and Pingba red clay sections in Guizhou Province as an example, the clay layer of the interface of rock and soil in carbonate weathering crust was systematically studied by field observation and laboratory analysis. The study found that the interface soil layer is composed of purple, red, brown, yellow, brown, black, gray and white layered variegated clay. Its mineral composition except kaolinite or illite similar to the upper soil , There are also the new instability of vermiculite, chlorite, montmorillonite, halloysite and its interlayered minerals. To the surface they will be transformed into more stable other clay minerals