The process by which the cover of rocks of the crust gets removed is called Denudation. This process of denudation completes the action of leveling by the medium of exogenetic forces. Denudation is regarded as the combined result of weathering, erosion and mass translocation. On this basis.
It is classified into the following parts:
Weathering: Weathering is a spatial process in which the rocks break down by disintegration and decomposition at their own place. The process of weathering completes mainly in the form of physical, chemical and biological weathering. This process of weathering is affected by the structure and organization of rocks, slope of land, diversity in climate and vegetation. In this, the amount and periodicity of insolation, nature of glacier, structure of rocks and the effect of water and gases on them are included.
Erosion: The word Erosion is made from the Latin word ‘Erodere’, the meaning of which is to rub or to nibble. Erosion is a dynamic process in which rocks keep on disintegrating by being rubbed, eroded, translocated or transported through glaciers, underground water, waves, air and rivers. The process of erosion takes place due to corrasion, attrition, hydraulic action, corrosion, deflation, cavitation and plucking.
Mass Translocation: Movement and transfer of rock debris in massive amount along a slope due to gravitational force is called Mass Translocation. Gravitational force is responsible in rolling down of unorganized rock debris. Creeping down the slopes, the rock particles accumulate in the foothills. This accumulation or pile of rocks – flour is called Talus. On the basis of the amount of rolling or creeping of unorganized loose materials, the mass translocation is classified in the form of gradual flow, rapid flow and extreme rapid flow.
