Exfoliation is not a part of chemical weathering. It is a form ofmechanical weathering in which curved plates of rock are stripped from the rock below. This results in exfoliation domes or dome-like hills and rounded boulders. Exfoliation domes occur along the planes of parting called joints, which are curved more or less parallel to the surface. Exfoliation domes are best developed in granitic rock. Rocks may break apart in layers and may also expand. Exfoliation is a result but not a process. It can occur due to expansion and contraction induced by temperature changes.Exfoliation domes and tors result due to unloading and thermalexpansion respectively.