Assertion The metamorphic rocks are recognized by their great hardness closely banded structures and...........

World Geography (Easy) World Physical Aspects

Assertion: The metamorphic rocks are recognized by their great hardness, closely banded structures and interlocking of crystals

Reason: Deep burial and strong compression during a mountain building activity may also change the sedimentary into metamorphic

Both A and R are correct and R explains A

Both A and R are correct but R does not explain A

A is correct but R is false.

R is correct but A is false.

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Explanation:

Both A and R are correct but R does not explain A
Metamorphism is a process by which recrystallisation and reorganisation of minerals occur within a rock. This occurs due to pressure, volume and temperature changes. When rocks are forced down to lower levels by tectonic processes or when molten magma rising through the crust comes in contact with the crustal rocks, metamorphosis occurs. In the process of metamorphism in some rocks grains or minerals get arranged in layers or lines. Such an arrangement is called foliation or lineation.