GENERAL GEOLOGY

Detailed explanation-1: -Raindrops basically “bombard” the exposed and bare land, moving its particles and destroying the structure of the top layer. Eventually, it causes the formation of surface crusts, negatively affects soil infiltration ability, and eventually results in runoff formation.

Detailed explanation-2: -Sheet and rill erosion Sheet erosion occurs when a thin layer of topsoil is removed over a whole hillside paddock-and may not be readily noticed. Rill erosion occurs when runoff water forms small channels as it concentrates down a slope. These rills can be up to 0.3m deep.

Detailed explanation-3: -Sheet erosion is caused by the force of raindrops impacting on bare soil (Ellison 1944) and dislodging particles of earth. This force is dependent on the speed of fall (a function of the length of fall and the wind-speed) and the weight (a function of the diameter of drops).

Detailed explanation-4: -Sheet erosion or also commonly known as sheet wash can be defined as the washing off the soil surface in thin layers as a result of rainfall. Soil erosion occurs in a wide area mostly in the coastal and flood-prone areas.

Detailed explanation-5: -Splash Erosion It occurs when raindrops hit the bare soil and the force of the impact breaks the soil aggregate and disperses the individual soil particles causing them to ‘splash’ into the soils surface.