Question

it may happen when rock is buried deep below the surface or where pieces of the earth's crust collide . which is a metamorphic rock?

Answer 1

Answer:

Metamorphism can be instantaneous as in the shearing of rocks at plate boundaries or can take millions of years as in the slow cooling of magma buried deep under the surface of the Earth. ... Regional Metamorphism occurs over a much larger area. This metamorphism produces rocks such as gneiss and schist.

Answer 2

• As we know that increased in depth temperature, burial high pressure, and long time form a metamorphic rock.

• It can be melted and converted into magma when metamorphic rock continues to heat.

• Igneous rock is formed when molten rock cools.

• Due to changes in pressure and temperature  over a large region of the crust regional metamorphism occurs.

• It may happen when rock is  buried deep below the surface or where pieces of the Earth's crust collide.

• Marble is a metamorphic rock.