To turn an igneous rock or sedimentary rock into a metamorphic rock, heat and pressure are needed. Metamorphism occurs when existing rocks are subjected to high temperatures and pressures, causing them to change in structure, texture, and mineral composition without melting.
Which is needed to turn an
igneous rock or sedimentary
rock into a metamorphic rock?
melting and cooling
heat and pressure
erosion and deposition
freezing and
cementation
1 answer