Pressures in the lower mantle start at 237,000 times atmospheric pressure (24 gigapascals) and reach 1.3 million times atmospheric pressure (136 gigapascals) at the core-mantle boundary.

They reveal that the chemical composition of the deep mantle has remained almost intact since the Earth's formation 4.5 ...

A phase change in post-perovskite materials at the so-called D” discontinuity is also evidence for long-predicted slow, convective flows in the mantle itself ...

The deepest earthquake ever, which occurred off Japan in 2015, reached into Earth's lower mantle. (Image credit: Shutterstock) This makes the quake something of a head-scratcher.

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

Identification of lower-mantle slab penetration events by comparing Cenozoic plate motions at the Earth's main subduction zones with motions predicted by fully dynamic models of the upper-mantle ...

The lower mantle is oxidized in the presence of water." Generally, when all the oxygen atoms in a compound are bonded with metal atoms, they are called oxides. However, ...

Scientists have long suspected that the mantle's so-called transition zone, which sits between the upper and lower mantle layers 255 to 410 miles (410 to 660 kilometers) below Earth's surface ...

According to current scientific theories, the anomalous material in the lower mantle, about 600 miles (1,000km) beneath the water, 'should not be found' there.

Thirsty crystals The deep Earth holds about the same amount of water as our oceans. That’s the conclusion from experiments on rocks typical of those in the mantle transition zone, a global ...

A computer model visualization of material in the lower mantle. This material resembles a sunken plate but cannot come from subducted plates because of the lack of nearby subduction zones.

The deepest earthquake ever, which occurred off Japan in 2015, reached into Earth's lower mantle. (Image credit: Shutterstock) This makes the quake something of a head-scratcher.