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Pressure Release,Sheeting and unloading as a process of mechanical weathering

Answer Text:
Pressure Release/Sheeting/Unloading as a process of mechanical weathering
- Disintegration of rocks due to expansion when weight is removed from over it.
- Soil and other materials lying on top of a rock are removed by erosion and mass wasting (denudation).
- The exposed rock expands when the weight that was pressing it is removed.
- The outer layer curves and eventually shells are pulled out from the rock.
- The result is formation of a high rocky hills called granitic tors e.g. Maragoli and parts of Machakos.