Reverse faults are usually found at convergent plate margins. In a convergent plate margin, compressive forces which squeezes rocks together are at work here. In this margin, plates are in head on collision.
A reverse fault is a fault type in which the hanging wall moves up relative to the footwall moving downward.
Here shortening of the earth occurs as the two blocks moves.
This can only be possible when there is compression. Two forces are directed towards each other.
