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6 July, 06:58

Which best describes the formation of metamorphic rock?

A) They are formed through the cooling and hardening of magma or lava, both below Earth's surface or on Earth's surface as volcanic rocks.

B) They are formed by deposited sediment, usually at the bottom of lakes and oceans, that is compressed over time into solid layers of rock.

C) They are formed as extreme weather elements, like tornadoes and floods, break down mountains and other rock landforms into smaller pieces.

D) They can be formed from any of the three rock types, withstanding high temperatures and pressures, and forming new minerals without melting.

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  1. 6 July, 10:25
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    Metamorphic rocks formed from direct magma heating and intrusions are termed as thermal or contact metamorphic rocks. Those formed as a result of widely distributed pressure and temperature changes induced by tectonic movements are known as regional metamorphic rocks.
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