Add Yahoo as a preferred source to see more of our stories on Google. Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, ...

During mantle overturn, large-scale plumes rise toward the surface, contributing to the formation of the Archean continents. Simultaneously, the temperature at the core-mantle boundary rapidly ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...

Some geological formations reshape continents. Others reshape economies. In South Africa, the Witwatersrand Basin belongs to ...

In the absence of oxygen, methane may have been the most abundant greenhouse gas in Earth’s atmosphere, reaching a stable balance between a greenhouse and anti-greenhouse until oxygen producing single ...

Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — ...

A new analysis of rocks thought to be at least 2.5 billion years old helps clarify the chemical history of Earth's mantle -- the geologic layer beneath the planet's crust. The findings hone scientists ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Analyzing rocks in thin ...