Compression is a type of stress that causes the rocks to push or squeeze against one another. It targets the center of the rock and can cause either horizontal or vertical orientation.
● In horizontal compression stress, the crust can thicken or shorten.
● In vertical compression stress, the crust can thin out or break off.
The force of compression can push rocks together or cause the edges of each plate colliding to rise. Mountains are a result of high-impact compression stress caused when two plates collided.
