In the formation of metamorphic rocks, temperature and pressure primarily change existing minerals. Metamorphism involves the alteration of the mineral composition and structure of pre-existing rocks (either igneous, sedimentary, or earlier metamorphic rocks) due to increased temperature, pressure, and/or the presence of chemically active fluids. This process can lead to the formation of new minerals and the recrystallization of existing ones.
In the formation of metamorphic rocks, what effect do temperature and pressure primarily have?
They erode rocks.
They create layers.
They make rocks smaller.
They change existing minerals.
1 answer
1 answer