NORFOLK, Va. — Fault lines are fractures or breaks in the Earth's crust where tectonic plates move past each other, often resulting in earthquakes. These geological features are classified into ...

Part of the San Andreas Fault in southern California may be on shakier ground than previously thought.. The 800-mile-long San Andreas Fault is one of the more famous faults in the United States ...

The second is a reverse fault, where plates pushing against each other build compressional stress. This forces one plate to rise overtop of the other and the area is shortened.

The earthquake resulted from a geological phenomenon called a “reverse fault”. This occurs when tectonic plates collide, causing the Earth’s crust to thicken.