A new study suggests there may be a layer of surprisingly fluid rock ringing the Earth, at the ... Avouac, JP., Zhan, Z. et al. Weak upper-mantle base revealed by postseismic deformation of ...

Through a combination of previous seismological and mineral physics studies, it is well known that the Earth's mantle is divided (mineralogically) into two major regimes: the upper and the lower ...

The mantle isn’t a complete unknown. Occasionally, volcanic eruptions spew out bits of it – chunks of greenish peridotite, the type of rock that dominates the upper mantle, embedded in basalt ...

These kinds of dynamics can explain quakes as far down as 249 miles (400 km), which is still in the upper mantle. But even before the 2015 Bonin aftershock, quakes have been observed in the lower ...

Water trap Our planet may be blue from the inside out. Earth’s huge store of water might have originated via chemical reactions in the mantle, rather than arriving from space through collisions ...

If you were to slice through it, you would see the Earth is divided into distinct layers. On top is the relatively thin crust where we live. Beneath that is the 2,900 km thick mantle layer. Then ...

The three upper tier videos (all equally rated) are considered Milton van Dyke Award winners, named for the fluid dynamicist whose 1982 book of visualizations inspired the contest. Each of those ...

A new study from a University of Chicago scientist suggests there may be a layer of surprisingly fluid rock ringing the Earth, at the very bottom of the upper mantle. The finding was made by measuring ...