A protolith is the original, unmetamorphosed parent rock from which a metamorphic rock forms through heat, pressure, and chemically active fluids.
All about the Earth's natural environment, features, and processes, focusing on landforms, climate, soils, water, and ecosystems.
A protolith is the original, unmetamorphosed parent rock from which a metamorphic rock forms through heat, pressure, and chemically active fluids.