Elenathewise/Getty The discovery links ancient mantle activity to the present-day geography of the Great Lakes. It underscores how Earth's internal processes—occurring over millions of years ...

A hotspot that now lies in the middle of the Atlantic Ocean was once under the Great Lakes, and may explain ... hot material that rise from the mantle, Earth's middle layer. When hotspots interact ...

The Great Lakes owe their origin to an ancient hotspot that existed beneath Pangaea 300 million years ago, researchers have revealed. This discovery sheds light on how Earth's geological history ...