In A Normal Fault The Hanging Wall Moves
In this picture of a normal fault the valley is the hanging wall and the mountain is the footwall.
In a normal fault the hanging wall moves. The hanging wall slides down relative to the footwall. They are common at convergent boundaries. An upthrown block between two normal faults dipping away from each other is a horst. The forces creating reverse faults are compressional pushing the sides together.
Together normal and reverse faults are called dip slip faults because the movement on them occurs along the dip direction either down or up respectively. The motion between the two is not always smooth and. A n fault forms when the hanging wall moves down relative to the footwall a. Low angle normal faults with regional tectonic significance may be designated detachment faults.
A downthrown block between two normal faults dipping towards each other is a graben. In fault normal dip slip faults are produced by vertical compression as earth s crust lengthens. The hanging wall slides down the footwall. In a normal fault the hanging wall moves downward relative to the footwall.
Normal fault s are common.