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 ...

Evolution and geologic history reveal how life and Earth have changed over time. The National Academies explore fossil records, genetic evidence, and natural processes that shape our planet.

A new international study published in Earth and Planetary Science Letters reveals that the boundaries between geological epochs and periods, even though randomly distributed, follow a hidden, ...

3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our Fleeting Moment in Deep Time 6. Frequently Asked Questions What if we told you ...

Controversy and geologic theory / Daniel W. Müller ... [et al.] -- Development of a scientific controversy / Maria Bianca Cita -- Controversies about stromatolites : vices and virtues / R.N. Ginsburg ...

Dating key tectonic events in Japan's geological history has long been often challenging due to poor microfossil preservation from intense heat due to metamorphism. Researchers tackled this by using ...

Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise. By Pablo Fonseca Q. / Knowable Magazine ...

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 ...

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, ...