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

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Deeply hidden in Earth’s mantle there are two huge ‘islands’ with the size of a continent. New research from Utrecht ...

There are three types of seismic waves – P waves, S waves and surface waves. P waves are longitudinal waves, and their relative speed is faster than other waves. P waves can travel through ...

These ancient buried "super-continents"—known to scientists as large low-seismic-velocity provinces (LLSVPs)—were found ...

The study of seismic waves provides evidence for the internal structure of the Earth, which cannot be observed directly. P waves are detected on the opposite side of the Earth. Refractions between ...

Seismic waves from one of those earthquakes ... The presence of hydrous silicates could also tell seismologists something about the speed of slab subduction in the region. The hydrous magnesium ...

The heavier one sinks into the mantle. Traditionally, positive seismic wave speed anomalies in the mantle were attributed to “cold slabs” — remnants of subducted tectonic plates. Essentially ...