Where does the pressure come from in a normal fault?

In a normal fault, the pressure comes from extensional forces that pull the Earth's crust apart. These forces create tension, causing one block of crust to move downward relative to another. This movement occurs along a fault plane, typically at an angle, allowing the crust to accommodate the stretching and thinning of the Earth's surface. The stress is primarily a result of tectonic plate movements associated with divergent boundaries.