One of the differences between volcanic rocks and plutonic rocks is that volcanic rocks form at the surface of the planet, while Plutonic rocks are formed from beneath the surface. Plutonic rocks are roughly ground. They are created from large intertwined crystals. Volcanic rocks are igneous rocks which are produced from lava, molten rock, which have been propelled out from a volcano onto the surface of the rocky body, such as an asteroid, planet or dwarf planet.
Volcanic rocks are finely grained and are found on stable planetary bodies in our solar system. Plutonic are igneous rocks that form chambers of molten rock or magma. They are made up of the bottom of the continental crust, as well as oceanic crust. Their slow rate of the formation allows for better texture and coarseness since it permits time for large crystals to take shape before magma solidifies into rock.
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