Types faults make earth quake
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Normal faults occur when rocks pull apart, causing the rock on one side of the fault to move down relative to the other side. Reverse faults occur when rocks are pushed together, causing the rock on one side to move up. Transform faults cause horizontal movement between blocks of rock on either side. Oblique faults involve a combination of these movements. Faults represent zones of weakness where future earthquakes and surface rupturing are most likely to occur. Infrastructure like buildings and transportation corridors in fault zones faces damage during seismic activity.
Types faults make earth quake
- 1. Question1 A fault is a crack in the Earth's crust. Typically, faults are associated with, or form, the boundaries between Earth's tectonic plates. In an active fault, the pieces of the Earth's crust along a fault move over time. The moving rocks can cause earthquakes. Inactive faults had movement along them at one time, but no longer move. The type of motion along a fault depends on the type of fault. The main types of faults are described below. Normal dip-slip fault Normal faults happen in areas where the rocks are pulling apart (tensile forces) so that the rocky crust of an area is able to take up more space. The rock on one side of the fault is moved down relative to the rock on the other side of the fault. Normal faults will not make an overhanging rock ledge. In a normal fault it is likely that you could walk on an exposed area of the fault.
- 2. Reverse dip-slip fault Reverse faults happen in areas where the rocks are pushed together (compression forces) so that the rocky crust of an area must take up less space. The rock on one side of the fault is pushed up relative to rock on the other side. In a reverse fault the exposed area of the fault is often an overhang. Thus you could not walk on it. Thrust faults are a special type of reverse fault. They happen when the fault angle is very low. Transform (strike-slip) faults The movement along a strike slip fault is horizontal with the block of rock on one side of the fault moving in one direction and the block of rock along the other side of the fault moving in the other direction. Strike slip faults do not make cliffs or fault scarps because the blocks of rock are not moving up or down relative to each other.
- 3. Oblique- slip fault However, faults are usually more complex than these diagrams suggest. Often movement along a fault is not entirely of one variety. A fault may be some combination of strike slip and normal or reverse faulting.
- 4. Question 2 Faults are have had displacement of the rocks along them. Typically plane of dislocation movement occur during faulting. The pictured below shown the place where the fault will be happen. Because at that placed it’s a line of displacement or zone of deformation. Buildings in the zone of deformation would be damaged. Also anything crossing the fault, such as transportation corridors, utilities will be damage. Question 3 Fault movement they are most likely to generate future earthquakes or commonly create zones of broken ground-weaker and less stable than the adjacent rock. If the earthquake is large enough, surface fault rupture can occur. Surface rupture is big earthquake that above 6.5 magnitude. If dam structure build on the fault area the engineering problem that possible to be occurred is, as we know if the earth quake not big it will cause the dam crack in the future and in long term it will collapsed finally. Faults can be avoid by setting the dam back a safe distance or using special studies to recommended to assess the hazard.
- 5. CONCLUSION