* Metamorphism: This process involves changes in the mineralogy and texture of a rock due to heat and pressure, but without complete melting. The rock remains in a solid state.
* Melting: When a rock melts, it transitions into a liquid state called magma (underground) or lava (above ground). This signifies the beginning of the igneous rock cycle.
What happens when a metamorphic rock melts?
* Magma formation: The melted metamorphic rock becomes magma.
* Cooling and crystallization: If the magma cools and solidifies, it forms an igneous rock.
So, if a rock melts during metamorphism, it transforms into an igneous rock, not a metamorphic rock.
