When a rock is altered by extreme heat and pressure what type of rock is the results?
Rock comes in three types: Igneous, Sedimentary, and Metamorphic. Igneous rock comes from solidified magma. Sedimentary rock is created from the pressure and hardening over time of sediment, which is formed from erosion of earth, sand, and even biological tissue. Metamorphic rock is altered from other types of rock, altered by extreme heat or pressure.