Despite seeming like a relatively stable place, the Earth's surface has changed dramatically ... across large discontinuous areas. Some minerals in rocks and organic matter (e.g., wood, bones ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

Although the team obviously can’t tie zircon minerals to the Roman Empire’s collapse, their lengthy migration inside frozen chunks of glacier further underscore the 6th century ice age’s severity.

Earth has existed ... contain tiny traces of rock that are older than the hills themselves. The 50-mile-long (80 kilometers) ...

Rare earth minerals and the elements inside them have been the focus of many diplomatic skirmishes. But what do these special materials do and are they as rare as the name suggests? Video by ...

We've discovered that a meteorite struck northwest Scotland 1 billion years ago, 200 million years later than previously ...

The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.

In a study co-authored by a Texas A&M University scientist, researchers have revealed new insights into the geological ...