Which metamorphic rock is formed from the cooling and solidification of molten magma and sedimentary rocks form by cooling and solidification of molten rock?
Igneous Rock ⇒ Rocks formed due to cooling or solidification of magma or lava is known as igneous rocks. Igneous rock, any of various crystalline or glassy rocks formed by the cooling and solidification of molten earth material. Igneous rocks constitute one of the three principal classes of rocks, the others being metamorphic and sedimentary.