GEOLOGY

Detailed explanation-1: -reverse (thrust) fault-a dip-slip fault in which the upper block, above the fault plane, moves up and over the lower block. This type of faulting is common in areas of compression, such as regions where one plate is being subducted under another as in Japan.

Detailed explanation-2: -When rocks slip past each other in faulting, the upper or overlying block along the fault plane is called the hanging wall, or headwall; the block below is called the footwall.

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: -An earthquake is a shaking of the ground caused by the sudden movement of large blocks of rock along a fault.

Detailed explanation-5: -If the angle of the fault plane isn’t vertical, then the fault is called a dip-slip fault. In a normal dip-slip fault, the rock above the fault (called the hanging wall) drops down relative to the rock below the fault (called the footwall).