In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have voted against a proposal to declare a new geological epoch called the Anthropocene to reflect how profoundly human ...

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

Researchers have made a new discovery that changes our understanding of Earth's early geological history, challenging beliefs about how our continents formed and when plate tectonics began. A study ...

Earth's 4.5 billion year geological history is full of death and rebirth, mass extinctions and explosions of biodiversity, with different periods often marked by cataclysmic changes that radically ...

Helicopters will be flying low over northern Colorado during the next several months to conduct geological imaging, according to a news release from the U.S. Geological Survey. Beginning in August, ...

STARKVILLE, Miss.—Mississippi State Professor Renée M. Clary is the 2025 recipient of the Geological Society of America’s Mary C. Rabbitt Award, honoring her distinguished scholarship and ...

The Moon has a long, chaotic geological history almost as old as Earth itself. Every crater, rock and speck of dust on the Moon tells a story, but because it's not exactly close to our planet, this ...