Igneous rocks are those that solidify from magma, a molten combination of rock-forming minerals and usually volatiles including gases and steam. Considering the fact that their constituent minerals are crystallized from molten substance, igneous rocks are fashioned at superior temperatures. They originate from processes deep inside the Earth—commonly at depths https://bookmarkbooth.com/story13254152/the-fact-about-the-rock-cycle-video-that-no-one-is-suggesting