Researchers say they might have discovered the oldest rocks on Earth. The rocks in question are a belt of swirly, stripe-covered rocks found in the northeastern reaches of Canada. These rocks appear ...

The gold standard for determining the age of ancient rocks is measuring the radioactive decay of isotopes of uranium into lead in minerals known as zircons. But not all rocks contain zircons, so ...

In 2008 scientists reported that rocks in Canada were the world’s oldest. New data appear to confirm this contested claim ...

Researchers mapped a pulsing mantle plume under Afar that channels molten rock upward, stretching Africa’s crust until it cracks and an ocean basin begins.

The Worcester area has evidence of the Mesoproterozoic Era, going back to the earliest known days of the present-day Earth's ...

Two different testing methods have revealed that rocks from the Nuvvuagittuq Greenstone Belt in northeastern Canada date back to 4.16 billion years ago, reinforcing their status as the oldest reliably ...

If the new age of these Canadian rocks is solid, they would be the first and only ones known to have survived Earth’s earliest, tumultuous time.