How do rocks become metamorphic rocks?

Answer 1

by heat and very great pressure

Answer 2

A metamorphic rock is an igneous, sedimentary, or another metamorphic rock that has been: 1) squeezed by incredible pressures deep underground, 2) has been exposed to very hot fluids, 3) has been exposed to very high temperatures without melt occurring, 4) combinations of numbers 1-3. Rock exposed to these conditions can be metamorphosed, altering its structure, mineral alignment, and possibly its chemistry.

Answer 3

It can undergo more metamorphism, creating a different metamorphic rock, or undergo retrograde metamorphism, which also creates a different metamorphic rock. Metamorphic rocks can undergo these changes due to increases or decreases in temperature and pressure.

Answer 4

The parent rock is exposed to varying degrees of pressure and/or heat either from depth of burial, exposure to a plutonic body of intense heat, or from pressures resulting from the collision of tectonic plates. The heat and/or pressure can transform the minerals inside the parent rock to new minerals, cause recrystallization of existing minerals, or reorganize the existing minerals into bands and layers. Exchanges of elements can also occur from hot fluids associated with plutonic intrusions. All of these processes take place without any melting of the parent rock.

Answer 5

Rocks become metamorphic through heat and pressure deep within the Earth's crust. This causes the mineral composition and texture of the rock to change without completely melting it. Metamorphic rocks can form from any type of pre-existing rock, such as sedimentary or igneous rocks.

Answer 6

Nobody knows, unless they are smart so i am but I'm not gonna answer it because you need to read your science book to figure it out

Answer 7

broken down by weathering.