A COMPARATIVE VERIFICATION OF CHEMICAL COMPOSITION DUE TO MASS MOVEMENTS EXAMPLE IN GRANITEIC ZONE

Abstract

 In this study, Actual mass movements in the Granite Zone (Abukuma highland during Hagibis) were verified environmental conditions. In particular, we focused on the chemical composition that may induce the degree of geological weathering. The mass movement cases were databased from satellite imagery (Sentinel-2B). Spatial information based on numerical geographic information and chemical analysis of runoff were used for data on environmental conditions. The results show that the relationship between cumulative precipitation and slope gradient can indicate a large or small collapse rate. However, the chemical analysis of elemental runoff indicated that the amount of Ca from feldspar and Mg from biotite, which are leached from the granite during weathering, were also involved. The amount of these elements released from the granite varies depending on the geology and topographic position of the granite.