The phenomenon of the "Great Dissonance", where about a billion years are missing from the Earth's rocks, may finally be ...

The classic technique for assessing the history of a rocky planet’s geology is to count craters. On average, areas with longer exposure to space have had more impacts, and therefore more craters. By ...

A group of scientists has chosen a small lake near the U.S.-Canada border as the site that best represents the Anthropocene Epoch—a proposed period of geologic time marked by humans’ drastic impact on ...

To interpret what we see today both on land and at the seabed, we need to understand how the landscape was different in the past. When we say "past," we mean on a geologic timeframe—specifically, ...

The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs were wiped ...

3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our ...

Earth’s history is divided up into different geological wedges of time, wedges we like to call things like epochs, periods, and eons. They’re defined by events that shaped the planet (think big ...

No work on any science has yet been published in our language more exhaustive of facts, more clear in statement, or more philosophical in general character and arrangement, than Dana’s “ Mineralogy,” ...