How does plate tectonics impact igneous rocks?
Plate Tectonics is the theory that the entire crust and outer shell of the Earth is floating on Tectonic Plates in the lithosphere. These plates are always moving at aver slow pace, but when one crashes into another, the force can be fonamonal. The plates can move apart, too. When this happens, hot molten rock spews up from the Earth and creates a volcano. The magma or lava then cools, forming more igneous rocks. This, if you count making more rocks, is a very positive impact.