Under the Pacific Ocean, hidden material was discovered in Earth’s mantle. So we have sunken, ancient worlds down there, and ...

Mars has northern and southern hemispheres like Earth, but their defining characteristics are markedly different, a ...

The emerging model of mantle convection suggests that some relatively cool subducting slabs of oceanic plate (blue) are deflected at the 660 km discontinuity (dashed black line) whereas others ...

are where tectonic plates pull apart due to convection currents in the mantle. Most constructive plate boundaries are found on ocean floors. Some of these undersea volcanoes become so large that ...

The idea that the Earth's crust and mantle might move together like a "conveyor belt" as a result of convection currents in the latter was first proposed in 1919 by the British geologist Sir ...