GENERAL GEOLOGY

Detailed explanation-1: -Contact metamorphism is a type of metamorphism where rock minerals and texture are changed, mainly by heat, due to contact with magma. Regional metamorphism is a type of metamorphism where rock minerals and texture are changed by heat and pressure over a wide area or region.

Detailed explanation-2: -Contact metamorphism occurs when rocks are heated by magma or lava. this usually seen along the edges of igneous rocks. Regional metamorphism is when rocks buried deep beneath the earth’s surface are changed by high temperature and pressure. this usually occurs in large areas.

Detailed explanation-3: -These two types of metamorphism mainly differ from each other according to the area in which metamorphism takes place. Moreover, contact metamorphism involves the contact of the rock with magma, while regional metamorphism involves collisions between continent-continent or oceanic and continental plates.

Detailed explanation-4: -Contact metamorphism happens on a small scale when the edge of a hot, intruding magma body heats and transforms the cooler surrounding rock. Regional metamorphism occurs on a large scale when colliding tectonic plates fold and deform rocks in mountain ranges.

Detailed explanation-5: -Contact metamorphism occurs due to heating, with or without burial, of rocks that lie close to a magma intrusion. It is characterized by low P/T gradients, as strong thermal gradients between an intruding magma and adjacent country rock are best established at shallow crustal levels.