Factors affecting erosion in geological formations include internal and external factors. Internal factors include the characteristics of the rocks themselves, such as their strength and discontinuities, and external factors include climate, vegetation, slope, and weathering processes. In addition, the type of lithology of the region plays an important role in erosion. Some rocks are easily eroded and others are more resistant. For example, in areas with limestone, chemical erosion is greater than mechanical erosion due to the high solubility of lime. While in areas with sedimentary rocks, mechanical erosion plays a more important role. The behavior of different rocks against erosion is different and some lithological units are sensitive to erosion and prone to produce sediment. The behavior of Quaternary rocks and deposits against weathering and erosion depends on several factors, some of which are related to the nature of the rock and other factors related to the external environment including the rock.