North America's deepest gorge, Hells Canyon, which slithers along the border of Idaho and Oregon, is a surprisingly new ...

Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust above it to "drip" and suck down rocks from across the continent.

North America’s geological core has persisted for billions of years—it’s what scientists call a craton, a massive block of continental rock that withstands the natural recycling system of ...