Like any subculture's new guard, the modern telemark movement seems to have a quirky relationship with its history. Instead of prioritizing things past, the niche sport’s new school is naturally ...

Some rocks below the Great Unconformity are 1.2 billion years older than those above it. In some places, the rocks below the Great Unconformity are about 1.2 billion years older than those above it.

First noticed by John Wesley Powell in 1869 in the layers of the Grand Canyon, the Great Unconformity, as it's known, accounts for more than one billion years of missing rock in certain places.

There were thousands of feet of missing rock – it had just vanished. He named this feature The Great Unconformity, and asked himself, "how can this be?". Today geologists know that the youngest ...

“We may need to change our language if we want to think about the Great Unconformity as being more complicated, forming at different times in different locations and for different reasons.

Geologists call it the Great Unconformity, and it refers to more than one billion years’ worth of missing rock in various places around the globe, including the Grand Canyon. Huge chunks of geologic ...

But sometimes, the absence of geological records is just as telling as their presence. The Great Unconformity, a missing chunk of time that appears in rocks across the world, is the ultimate example ...

The research presents the latest findings in a debate over what caused the Earth’s “Great Unconformity”— a time gap in the geological record associated with the erosion of rock up to 3 ...

This strange phenomenon is called the Great Unconformity, and for over a century it’s been one of the biggest mysteries in geology. But new research published in the Proceedings of the National ...