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 ...

Each year, National Earthquake Information Center locates approximately 20,000 earthquakes around the world. That is about 55 earthquakes per day. By some estimates, there may be even more. According ...

A new kind of earthquake has been detected in western Canada, one that shakes the ground slower and longer than typical seismic events. These earthquakes, recorded during hydraulic fracturing for oil ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. A devastating and violent type of earthquake ...

Gold nuggets have long fascinated treasure hunters and geologists alike, often found gleaming within quartz veins deep underground. Yet the exact process behind the formation of these ...

A new type of seismic threat is gaining attention among geologists—and it could have serious implications for California. Known as “supershear” earthquakes, these rare but devastating quakes travel ...

Gold has always been a hot commodity. But these days, finding a nugget isn’t too tricky: Much of the world’s gold is mined from natural veins of quartz, a glassy mineral that streaks through large ...

A rock formation in Puerto Rico that was a popular tourist destination was reduced to rubble after the first of two powerful earthquakes rocked the island Monday. The natural rock formation, known as ...

A 5.8 magnitude quake hit Puerto Rico before dawn Monday, unleashing small landslides, causing power outages and collapsing some homes, as well as a famed tourist attraction. The shake collapsed a ...