Normal Fault Hanging Wall And Footwall

Its strike and its dip.

Normal fault hanging wall and footwall.

Block position under the hanging wall. They bound many of the mountain ranges of the world and many of the rift valleys found along spreading margins. Normal faults occur in areas undergoing extension stretching. 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.

Normal faults are common. A downthrown block between two normal faults dipping towards each other is a graben. The hanging wall moves down relative to the foot wall. Generally speaking the hanging wall and footwall of a fault are in contact with each other.

Normal dip slip faults are produced by vertical compression as earth s crust lengthens. In some kinds of mineral deposits there is ore directly in the fault so. Where the fault plane is sloping as with normal and reverse faults the upper side is the hanging wall and the lower side is the footwall. When the fault plane is vertical there is no hanging wall or footwall.

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 groups of normal faults can produce horst and graben topography or a series of relatively high and low standing fault blocks as seen in areas where the crust is rifting or being pulled apart by plate tectonic activity. Low angle normal faults with regional tectonic significance may be designated detachment faults. Normal faults form in response to horizontal tensional stresses that stretch or elongate the rocks. True in a reverse fault the hanging wall block moves up relative to the footwall block.

If the hanging wall drops relative to the footwall you have a normal fault. An upthrown block between two normal faults dipping away from each other is a horst. Any fault plane can be completely described with two measurements. Formed by compressional stress rocks are pushed towards each other thrust fault.

Other articles where normal fault is discussed. In a normal fault the hanging wall moves downward relative to the footwall. Also miners will mine ore not hanging walls or footwalls. The hanging wall moves up relative to the foot wall.