Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...

The oldest terrestrial materials ever dated by scientists are extremely rare zircon minerals that were discovered in western ...

The Hadean Eon, Earth's first geological period, remains shrouded in mystery due to scarce rock records. However, Québec's ...

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

The oldest zircons ever discovered came from this rock. Ackerson once found a zircon that's 4.32 billion years old. Zircons that old "are extremely, extremely, extremely rare, ...

Geologists have long debated whether a stony formation in Canada contains the world’s oldest rocks – new measurements make a ...

Remains of this key transitional species date to a mysterious "black hole" in the fossil record.

An obscure rock formation on the eastern shore of Canada's Hudson Bay may contain the oldest known rocks on Earth, a new ...

Researchers initially believed the unnamed meteorite hit Earth 1.17 billion years ago, creating the Stac Fada Member rock layer in northwestern Scotland.

The study authors probed the zircons embedded in a lunar rock sample collected during Apollo 17 in 1972, and they constructed a 3D map of the atoms.

We are part of a research team that has confirmed the oldest known rocks on Earth are located in northern Québec.__ ...