Question

Which processes form metamorphic rocks?

A.
melting and cooling

B.
melting and pressure

C.
pressure and cooling

D.
heat and pressure

Help please. <3

Answer 1

Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (1500 bars), causing profound physical and/or chemical change.

Answer 2

so its D

Answer 3

Thank you so much! <3