The Hanging Wall Moves Downward Relative To The Footwall

When the hanging wall moves down in relative to the footwall it is called a fault. Alternatively such a fault can be called an extensional fault. Normal dip slip faults are produced by vertical compression as earth s crust lengthens.

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Low angle normal faults with regional tectonic significance may be designated detachment faults.

The hanging wall moves downward relative to the footwall.

Tension is stress that pulls rocks apart. An upthrown block between two normal faults dipping away from each other is a horst. Normal faults usually form where tectonic plate motions cause tension. When the hanging wall moves up in relative to the footwall it is called a fault.

Along a normal fault the hanging wall moves down relative to the footwall. They bound many of the mountain ranges of the world and many of the rift valleys found along spreading margins. Another type of fault is the thrust fault where ground on one side of the fault moves up and over adjacent ground. The hanging wall slides down relative to the footwall.

The hanging wall moves downward relative to the footwall. Normal fault s are common. A downthrown block between two normal faults dipping towards each other is a graben. A normal fault occurs when the crust is extended.

These usually occur when tectonic forces cause tension that pulls rocks apart. In a normal fault the hanging wall moves downward relative to the footwall.