They usually are found in cliffs, and the faulting is usually caused by water. Vertical cracks appear in the sediments, and large blocks of the sediments slide downward, or slump, along these cracks. The actual faults are vertical near the top of the structure and become asymptotic at the bottom. In most cases, there are multiple slump structures on the same cliff. The exposed vertical face is called the scarp.
Slump structures continue to slump after the rock has lithified.
Lecture notes from EES 208 instructed by Gautam Mitra, Fall 1999 University of Rochester.