I think the answer is periphery, but it could be wrong.
Answer:
Explained
Explanation:
The melted magma or partially melted rock rise or intrude the surrounding rocks because of the buoyancy. The partially melted rocks or magma due their high temperature become less dense than the surrounding rocks and rise up. And then these heated rock or magma react with surrounding rocks which in turn increases the pressure in the magma chamber. This intermixing of magma with surrounding rocks forms another type of rocks called igneous rocks.
Mostly its the tectonic plates that shift under us that causes earthquakes, how they shift changes the damage the earthquake can cause so tectonic plates unless u want the mythological one which is some earth god scratching his back
