It's how mountains form, volcanoes erupt and continents drift apart. So, what causes the tectonic plates to move? Discover the origins of the continental drift theory and how scientists explain these ...

Scientists have identified a long-lost tectonic plate in the west Pacific Ocean. Called Pontus, the 'mega-plate' was once 15 million square miles, about a quarter the size of the Pacific Ocean today.

Activity in the mantle makes mountains, moves tectonic plates, and causes earthquakes and volcanic eruptions. Learn more about the thick, active layer that makes our Earth our Earth. In 1970, Russian ...

Tectonic plates, the giant slabs of rock that make up the Earth’s crust, are always moving. This movement can raise mountains ...