ABSTRACT
In this paper, characteristic study of groundwater quality at seven fracture zone landslides in Shikoku Island of Japan was carried out. The landslide sites were selected with geologic structural consideration. Groundwater quality of each landslide site was characterized from geological point of view, and its behavior was also investigated. Test results showed that all the groundwater samples were of CaCO3 type, and it was also known that electrical conductivity of the groundwater was higher than that of its environment. These results indicate that chemical weathering of base rocks at the fracture zone landslide sites is actively in progress.
