exposure to extreme heat and pressure changes / metamorphoses sedimentary / igneous rock into metamorphic rock
if_rock is very_hot_can_melt. metamorphic_rock is rock. volcanic_rock is igneous_rock. combusion_heating_element is heating_element. amphibolite is not metamorphic_rock. metamorphic_rock is not rock. metamorphic_rock is stone. andesite is igneous_rock. amphibolite is metamorphic_rock. andesite is not igneous_rock.