Which type of scarp is created due to differential erosion along a fault line?

The correct answer is related to the specific characteristics of scarps formed by geological processes. A fault-line scarp is typically created at the intersection of a fault with the surface, where differential erosion occurs along the fault line due to the varying resistance of the rock materials involved. When a fault displaces different types of rock, the softer rock may erode more quickly than the harder rock, leading to the formation of a distinct scarp that delineates the fault's trace on the surface.

This phenomenon can be observed in various geological settings where faults lead to contrasting erosion rates, creating a pronounced topographical feature. The fault-line scarp provides insight into the geological history of an area, including the activity of the fault and the materials it has interacted with over time. Understanding these characteristics is crucial for geologists in assessing landscape evolution, seismic hazards, and land-use planning.