Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

Deep within Earth’s mantle lie two enormous, continent-sized structures known as LLVPs. Scientists once believed these ...

Massive mantle formations, called LLSVPs, have been found to be over a billion years old. These structures, sitting 3,000 km beneath the surface, slow seismic waves, indicating unique physical and ...

Deeply hidden in Earth's mantle there are two huge "islands" the ... This way, seismologists will be able to make images of the interior of our planet, just like a hospital doctor can "see ...

It was a shock for researchers to see new images that depicted large slabs ... Their existence suggests that the Earth's mantle is more complex than previously believed. "With the new high ...

(Kateryna Kon/Science Photo Library/Getty Images) Millions of years of natural crust cycling mixed what was once Earth's ...