A model for convection in the upper mantle of the Earth comprising two flows, one of percolating melt fluid (which need be no more than a small volume fraction in the intergranular channels of ...

On a time scale of tens to hundreds of millions of years, the geomagnetic field may be influenced by currents in the mantle. The frequent polarity reversals of Earth's magnetic field can also be ...

The boundary between Earth's core and mantle is home to isolated pockets of rock which scientists have been unable to explain up until now. A team led by geoscientists from Arizona State University ...

This schematic illustrates the most geophysically plausible explanation for the abundance of HSE metals present in the Earth’s mantle. During the long period of bombardment, impactors would strike the ...