While the mantle is mostly solid, a layer about 93 miles (150 kilometers) down is melty, new research finds. When you purchase through links on our site, we may earn an affiliate commission. Here ...

The lower mantle refers to the layer between the outer core and asthenosphere. It makes up 55% of Earth by volume and experiences pressure from 237,000 atm to 1.3 million atm towards the outer core.

A previously unknown layer of partially molten rock has been detected beneath Earth’s crust. The discovery could help scientists learn more about the motions of Earth’s tectonic plates.

The mantle, by contrast, was seen as little more than a thick layer of hot rock, with the occasional plume pushing its way through. Now, the team on this new effort reports that a lot more is ...

Drilling a record-breaking 1,268 meters down, an international expedition team was able to recover a nearly continuous section of mantle rock from a “tectonic window,” a section of the seabed ...

This layer, known as the D" layer, is about 1,900 miles underneath the Earth's surface, resting between the liquid outer core and the solid mantle, and varies massively in thickness across the globe.

Earth’s inner layers are home to a water-saturated environment, according to a new study that assessed minerals trapped inside a rare gem diamond originating from a depth of about 660km ...

Scientists have determined that Mercury, the closest planet to the sun, may contain a 10-mile thick mantle layer of diamonds based on data from NASA’s MESSENGER space probe, Space.com reported.