Metamorphism

Metamorphism is a geological process where rocks undergo profound changes in mineral composition, texture, or structure due to heat, pressure, or chemically active fluids. This transformation typically occurs deep within the Earth's crust or mantle. Metamorphic rocks, such as marble or schist, form from existing rocks (igneous, sedimentary, or other metamorphic types) through recrystallization without melting. Metamorphism occurs along plate boundaries, where tectonic forces subject rocks to immense pressure and temperature, altering their physical and chemical properties over millions of years. This process plays a crucial role in Earth's geological cycle, contributing to the formation of mountain ranges and the recycling of Earth's crustal materials. Metamorphic rocks often exhibit distinct textures like foliation or banding, offering valuable insights into past geological conditions and the Earth's dynamic history.