Relationships between Crumbing Hills and Rock-Soil Characteristics of Granite Weathering Crusts in South China

摘要

Based on field investigation and laboratory analysis including grain-size analysis, scanning electron microscopy (SEM), chemical composition and X-ray diffraction (XRD), relationships between crumbing hills and rock-soil characteristics of granite weathering crusts are discussed in this paper. The coarse grains are dominant in the crusts which have a loosen structure with lots of cranny, and its strength is influenced mightily by water. In general, there are 5 layers in typical granite weathering mantle with distinct differences in grain-size, chemical composition and structure. The rock-soil characteristics play an important role during forming and developing of crumbing hills.