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 ...

Old earthquake faults appear to be smoother than young ones, worn smooth over time by friction like the brake pads of an old car. That’s one of the most striking insights of a new study by geologists ...

Two of the biggest fault lines in the world are synched together in a way that could lead to disastrous consequences, according to recent scientific analysis. This synchronization raises alarms about ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Two opposite types of faults, normal and reverse, help explain our undersea mountain ...