What Is the Difference Between a Hanging Wall and a Footwall

Multiple Choice

What is the difference between a hanging wall and a footwall?

A) A hanging wall is a term referring to folds, while a footwall is a term relating to faults.
B) A hanging wall is found on a normal fault, while a footwall is found on a reverse fault.
C) A hanging wall is always motionless, while a footwall is what moves .
D) A hanging wall is the overhanging rock unit on the slant that separates the two slabs, while the footwall below the slant.