In structural geology and mountain building processes, which of the following terms describes a severe tectonic fracture along which blocks of the Earth's crust have been displaced horizontally relative to each other, such as the San Andreas Fault?

💡 Solution & Explanation

A strike-slip fault is a steep tectonic fracture where relative displacement between adjacent crustal blocks occurs predominantly in a horizontal direction parallel to the fault trace, driven by shear stresses acting along transform boundaries. Plausible alternatives like normal faults involve vertical extension with the hanging wall moving down, whereas reverse and thrust faults involve crustal shortening under compression. The mechanics of stick-slip frictional behavior along these faults govern the magnitude and recurrence intervals of major earthquakes.