Granular disintegration

Granular disintegration – refers to the breakdown of rocks into tiny rock pieces/grains due to differential heating and cooling. This process affects rocks composed of different minerals (heterogeneous rocks) with different heating capacity. When such rocks are subjected to alternate heating/ expansion and cooling/ contraction, internal stresses and strains build up within the rock and eventually cause rock disintegration into tiny /smaller pieces called granules

.Granular disintegration mainly affects coarse granites.