A line on a rock surface or the ground that traces a geological fault is called fault trace/ fault line.
THREE TYPES OF FAULTS
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. “Occurs when the “hanging wall” moves down relative to the “foot wall””
Reverse 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, When the dip angle is shallow, a reverse fault is often described as a thrust fault. “Occurs where the “hanging wall” moves up or is thrust over the “foot wall””
Strike-slip Fault
- A fault on which the two blocks slide past one another. The San Andreas Fault is an example of a right lateral fault.
Types of Strike-slip fault movement
A left-lateral strike-slip fault
- If you were to stand on the fault and look along its length, this is a type of strike-slip fault where the left block moves toward you and the right block moves away
A right-lateral strike-slip fault
- If you were to stand on the fault and look along its length, this is a type of strike-slip fault where the right block moves toward you and the left block moves away.
