Footwall And Hanging Wall Normal Fault

An upthrown block between two normal faults dipping away from each other is a horst. They bound many of the mountain ranges of the world and many of the rift valleys found along spreading margins. This sliding downward of normal faults creates rifts valleys and mountains.

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A downthrown block between two normal faults dipping towards each other is a graben.

Footwall and hanging wall normal fault.

The hanging wall is to the left of the fault and the footwall to the right. The rift basin at the bottom of the north. Normal fault a type of fault in which the hanging wall moves down relative to the footwall and the fault surface dips steeply commonly from 50 o to 90 o. Normal fault geology.

Low angle normal faults with regional tectonic significance may be designated detachment faults. A type of fault in which the hanging wall moves down relative to the footwall and the fault surface dips steeply commonly from 50o to 90o. In a normal fault the hanging wall moves downward relative to the footwall. Normal dip slip faults are produced by vertical compression as earth s crust lengthens.

If the hanging wall drops relative to the footwall you have a normal fault. Normal fault s are common. Normal faults occur in areas undergoing extension stretching. The hanging wall slides down relative to the footwall.

If you imagine undoing the motion of a normal fault you will undo the stretching and thus shorten the horizontal distance between two points on either side of the fault.

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