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 ...

Instead of convergence taking place as with the two earlier events, this was a tensional stress event. Rocks were being pulled apart as continents moved away from each other. Faults from ...

Fault troughs may be classed as superficial or profound. Superficial fault troughs result from (1) earthquakes, or (2) volcanic activity, or (3) tension. Tensional fault troughs are due to ...