why block disintegration occurs
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Explanation:
The breaking up and crumbling away of a rock, caused by the action of moisture, heat, frost, air, and the internal chemical reaction of the component parts of rocks when acted upon by these surface influences.
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Block disintegration occurs due to repeated expansion and contraction of rocks during day and night, causing stress on the joints of the rocks, which eventually splits the rocks into blocks. It occurs in the area where the diurnal range of temperature is very high.
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