Normal Fault Hanging Wall And Footwall
Normal faults form in response to horizontal tensional stresses that stretch or elongate the rocks.
Normal fault hanging wall and footwall. 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. In some kinds of mineral deposits there is ore directly in the fault so. If the hanging wall drops relative to the footwall you have a normal fault. Also miners will mine ore not hanging walls or footwalls.
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. Normal dip slip faults are produced by vertical compression as earth s crust lengthens. Block position under the hanging wall. True in a reverse fault the hanging wall block moves up relative to the footwall block.
Normal faults occur in areas undergoing extension stretching. An upthrown block between two normal faults dipping away from each other is a horst. Generally speaking the hanging wall and footwall of a fault are in contact with each other. Formed by tensional stress rocks are stretched away from each other reverse fault.
Its strike and its dip. They bound many of the mountain ranges of the world and many of the rift valleys found along spreading margins. 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. Low angle normal faults with regional tectonic significance may be designated detachment faults. Other articles where normal fault is discussed. The hanging wall moves up relative to the foot wall.
When the fault plane is vertical there is no hanging wall or footwall. Formed by compressional stress rocks are pushed towards each other thrust fault. The hanging wall slides down relative to the footwall. The hanging wall moves down relative to the foot wall.