Rocks from the Hadean Eon, the first period in the geological timescale, have been dated in Québec. These are some of the oldest terrestrial materials dated by scientists.

Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the Greek god of the underworld, reflecting the extreme heat that likely ...

We are part of a research team that has confirmed the oldest known rocks on Earth are located in northern Québec. Dating back 4.3 billion years, these rocks provide a rare and invaluable glimpse ...

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

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

The BIC, which covers nearly 66,000 square kilometers—about the size of Ireland—is one of the oldest and largest igneous rock formations on Earth. Created by underground magma that cooled and ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn in this story: What are now thought to be the oldest rocks on Earth have ...

Since their formation billions of years ago, the oldest parts of the Earth’s continental rocks have generated natural ...

At 54 pounds, this Mars rock is largest on Earth. It could sell at auction for $4 million Sotheby's in New York City will auction off a cosmic item billed as the largest Martian meteorite ever ...