Earth’s mantle behaves like a slow-moving fluid, but that hasn’t stopped two vast regions at its base from maintaining a separation from the rest. These continent-sized areas are hotter than the rest ...

The Tibetan Plateau, often called the "roof of the world," continues to baffle geologists and others curious about Earth’s ...

Over millions of years, as rocky material descends through the boundary between the upper and lower mantle, mineral crystals are compressed and reformed into tinier grains that then regrow over time.

The mantle is about 1,800 miles (2,900 kilometers) thick and appears to be divided into two layers: the upper mantle and the lower mantle. The boundary between the two lies about 465 miles (750 ...

This contrasted with readings collected from the upper mantle that looked as expected—damped waves due to hotter temperatures. Talavera-Soza likened the difference to going for a run in hot or ...

To find out, the team used whole-Earth oscillation data from 104 past earthquakes to create a detailed 3D model of the upper ...

Nobody knew what they are, and whether they are only a temporary phenomenon, or if they have been sitting there for millions ...

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.

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?

Get Instant Summarized Text (Gist) Beneath California's Sierra Nevada, evidence suggests the lithosphere is undergoing foundering, where the denser lower lithosphere detaches and sinks into the mantle ...