This gneiss rock has a beautiful striped pink and black pattern, with little flecks of white. Local Minnesotan monuments and buildings are sometimes made of this iconic stone, which is older than ...

One of the most enchanting features of Macedonia Brook State Park is, unsurprisingly, Macedonia Brook itself. This waterway ...

Scientists have identified what could be the oldest rocks on Earth from a rock formation in Canada. The Nuvvuagittuq ...

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

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

Scientists have identified what could be the oldest rocks on Earth from a rock formation in Canada. The Nuvvuagittuq Greenstone Belt has long been known for its ancient rocks — plains of ...

In a geologic nutshell: Two ancient types of rock - 1.4-billion-year-old Oracle granite and 50-million-year-old wilderness granite combined to form a type of rock called gneiss.

In 2008, Canadian researchers said they'd found the world's oldest rocks in northern Quebec. The find was controversial. But after more than a decade of hard work, they believe they've really ...