Rock and minerals formations/Metamorphic rocks
Appearance
Metamorphic rock is any type of rock formation that has been subducted into the athenosphere, where heat and/or pressure change its crystal structure. See w:Metamorphic rock
Metamorphic rock is any type of rock formation that has been subducted into the athenosphere, where heat and/or pressure change its crystal structure. See w:Metamorphic rock