magma
Molten rock deep beneath the Earth's crust is called magma.
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metamorphic rock
Volcano or shield volcano.
The mid-Atlantic ridge.
The rock that churns deep beneath the Earth's surface is called "magma." It is a molten rock material that is located beneath the Earth's crust and can eventually rise to the surface as lava through volcanic eruptions.
If it finds its way dowm into the earths crust through rock cycle and then is melted and mixes together to form molten magma, it could re-erupt to the earths surface and form an extrusive igneous rock or cool and solidify within the earths crust as an intrusive igneous rock.
Tectonic Plates are part of the crust, and floats on the semi-molten rock magma layer.
Lava
Physical samples of rock extracted (taken) from deep within Earths crust.
Sedimentary rocks get transformed into metamorphic and eventually igneous rocks in deep earth's crust.
Lava is molten rock. The rock deep inside the earths mantle is always molten, and when it occasionally breaks through to the surface, the opening is called a volcano, and the liquid rock spilling out of the top is lava.