GEOLOGY

Detailed explanation-1: -In a normal fault, the block above the fault moves down relative to the block below the fault. This fault motion is caused by extensional forces and results in extension. Other names: normal-slip fault, tensional fault or gravity fault.

Detailed explanation-2: -normal fault-a dip-slip fault in which the block above the fault has moved downward relative to the block below. This type of faulting occurs in response to extension and is often observed in the Western United States Basin and Range Province and along oceanic ridge systems.

Detailed explanation-3: -A normal fault is one in which the rocks above the fault plane, or hanging wall, move down relative to the rocks below the fault plane, or footwall. A reverse fault is one in which the hanging wall moves up relative to the footwall.

Detailed explanation-4: -When an earthquake occurs on one of these faults, the rock on one side of the fault slips with respect to the other. The fault surface can be vertical, horizontal, or at some angle to the surface of the earth. The slip direction can also be at any angle.

Detailed explanation-5: -A normal fault is one in which the footwall, or the side of rock above the inclined fault, moves upward. The other side of the rock is called the hanging wall and it moves downward in a normal fault. A reverse fault is one in which the footwall moves downward and the hanging wall moves upward.