the rapid crustal uplift in the pleistocene and physical weathering and erosion, especially the erosional process of the flood in the mountains, are the direct causes for the formation of the gorges.
physical weathering and rift structure are the important process to form the loose solid materials in mud-rock flow.
物理风化和断裂构造是形成泥石流松散固体物质的重要过程;
it is demonstrated that frost weathering is the dominant form of physical weathering processes and has significant effect on rock disintegration and regolith formation in the region.