Question

Difference between block disintegration and granular disintegration?

Answer 1

Thank you for asking the question.
Block disintegration occurs in well-jointed rock just like granite. And, it is particular effective in areas with great diurnal range of temperature somewhere between 10-15 degree celsius and areas with barrel rocks without  a protective vegetative cover. In this rocks are split along the joints into larger rectangular shaped block.

While Granular disintegration process of physical or   mechanical weathering due to repeated heat  and cooling because of temperature change. As a result of alternative expansion and contraction of minerals in rocks causes the rock to break down into small pieces.

Answer 2

Block disintegration and granular disintegration primarily refer to two ways in which rocks are disintegrated.

In block disintegration, a rock disintegrates due to the change in temperature. This change causes the outer layers of the rock to expand and contract continually. This eventually disintegrates the rock.

In granular disintegration, a rock disintegrates due to frost action. The water in between the rock particles undergo freezing and thawing alternatively. The same process happens to the water in crevices or gaps between the rock particles.