Rocks formed by solidification of molten magma at the surface of the earth are called

Rocks formed by the solidification of molten magma at the surface of the earth are called Igneous Rock. The magma can be derived from partial melts of existing rocks in either a planet’s mantle or crust. Solidification into rock occurs as intrusive rocks or as Extrusive rocks. Igneous rocks form about 15% of the Earth's current land surface.