A new geological study reshapes the timeline of a major tectonic collision that helped form the Andes, suggesting key events ...

When seen through the eyes of St. Helena's John Livingston, these unassuming geological formations become chapters in a story ...

Geologists have solved the mystery of the disappearance from the geological record, millions of years ago, of one of North ...

Arizona’s desert scenery gets wonderfully strange at this Phoenix rock landmark, where stone, sky, and silence create an ...

Identifying minerals blends careful observation with dependable tests that reveal each specimen’s unique signature. Geologists examine hardness, streak, luster, cleavage, and crystal habit to tell ...

Earth Day is April 22, but activities begin this weekend. They include a festival featuring Washington’s favorite geologist, ...

There are aluminium-rich outcrops elsewhere on the planet and there are impacts, but I thought it was very shocking to see ...

Learn more about the bizarre geological features found throughout our Solar System.

More than a million years in the making, this gigantic chasm in the Panhandle Plains—and its remarkable hoodoos, pinnacles, ...

What appeared to be a mini-volcano erupted with fire and smoke along Santa Barbara's coast Thursday. But experts say there ...

By Will Dunham April 17 (Reuters) - The Grand Canyon is a marvel on the landscape of North America, a breathtaking geological ...

National Geographic's Wonder Lessons will teach you how to navigate the stars, spot cloud types, recognize common trees, and ...