A ‘ghost plume’ identified deep in the mantle beneath Oman suggests there may be more heat flowing out of Earth’s core than previously thought ...

According to NASA, the underground mantle plume is thought to be driving some of the melting seen beneath the ice, giving rise to lakes and rivers. It formed 50-110 million years ago.

A mineral theorized to exist in the mantle was found hiding in a diamond. Dubbed davemaoite, it could explain where some of Earth’s heat comes from.

Olivine's radiative thermal conductivity accounts for about 40% of heat transfer in the upper mantle, significantly influencing the heating of subducting slabs.