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 three ...

Faults in the Earth are categorized into three general groups based on the sense of slip, or movement, that occur along them during earthquakes. When you purchase through links on our site, we may ...

California is home to hundreds of faults. This partly explains why the state sees so many earthquakes. They can range wildly in size and shape. A fault is a fracture zone between two large blocks of ...