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magma, molten or partially molten rock from which igneous rocks form. It usually consists of silicate liquid, although carbonate and sulfide melts occur as well. Magma migrates either at depth or to Earth’s surface and is ejected as lava. Magma is naturally occurring molten or semi-molten rock material, generated within the Earth from which igneous rocks are derived through solidification and related processes. Magma is found beneath the surface of the Earth. Learn what magma is, how it forms, and what types of magma exist. Find out how magma affects volcanoes and the Earth's structure. Grab our lasso tool and hop into a live art event! We hope our free features like brush packs and pen pressure sensitivity help you create inspiring creative works while drawing with new art friends online.