ABSTRACT
The Japan Associationof Landslide proposed that almost all landslides occurred throughout Japan can be classified into three types, the Tertiary Formation type, shearing zone type, and hot spring type of landslides. The Tertiary Formation Type of Landslide is normally distributing along the front of high mountains and lower hills and very dangerous to human beings life and properties because of their closed relation to human actions and widely distribution and repeatedly actions. The properties of sliding mud are important to the development and potential activity of a landslide so that studies on the sliding mud have always been attractive to scientists and engineers who are working on landslides. The chapter describes the implications of iron speciation to a better understanding of landslide development through the redox change on several recurrent Tertiary Formation Type of Landslide profiles, and furthermore for a better understanding of landslide progressing from a geochemical view point.
