Work from two decades ago suggested the rocks could be 4.3 billion years old, placing them in the earliest period of Earth’s history.

Regents Review 2.0: Earth ScienceAS A RESULT, IGNEOUS ROCKS HAVE A RANGE OF OBSERVABLE TEXTURES SUCH AS GLASSY OR NON-CRYSTALLINE, AS SEEN IN THIS OBSIDIAN SAMPLE THAT COOLED VERY QUICKLY, COARSE ...

This supports the idea that the surrounding rock formed well within the Hadean Aeon, which would make it the only known remnant of Earth’s early crust.

Chunks of Martian rocks have been slamming into Earth for years, but now scientists are baffled by their age.

Gray rocks uncovered in northern Nunavik, Quebec, Canada may be the ultimate primordial find. The stones date back 4.16 billion years to the Hadean era and are the oldest known rocks on the planet.

Or for a no-cost, simplified version, take along page 7 of New York State’s Earth Science Reference Table, available to print online.

Earth-size 'pi planet' rocks a 3.14-day orbit It's Pi Day every day on exoplanet K2-315b.

(Image credit: NASA, Apollo Lunar Surface Journal) The oldest evidence of Earth's ancient atmosphere may be lurking in rocks from the moon, a new study suggests.

Scientists have recovered the first long section of rocks that originated in the Earth's mantle, the layer below the crust and the planet's largest component.

Along the eastern shore of Hudson Bay in Canada's northeastern province of Quebec, near the Inuit municipality of Inukjuak, resides a belt of volcanic rock that displays a blend of dark and light ...

After 60 years of trying, geologists finally pried rocks from Earth's upper mantle. That's huge for so many reasons.