Sentences with phrase «ancient pieces of crust»
Weaknesses in the field are believed to be created by «slab graveyards» — ancient pieces of crust and sediment that were pushed down into the Earth when plates collided and are now falling through the mantle.
https://www.newscientist.com/ Not exact matches
ANCIENT pieces of continental crust that are falling to the bottom of the Earth's mantle could explain mysterious dents in our planet's gravitational field.
New findings suggest the ancient Earth harbored a mantle that was much more efficient at drawing down pieces of the planet's crust.
This unified piece of ancient continental crust, called a craton, lies exposed at the surface in the Canadian Shield, and forms a solid foundation...