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

A record-breaking deep earthquake registered in May 2015 offshore of Japan likely was not a tectonic event but triggered by a ...

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

A re-examination of the 2015 Bonin Islands earthquake disproved earlier claims of a record-breaking deep aftershock in the ...

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.

Oceanic plates, being denser, plunge into the mantle at subduction zones, while hot material rises to the surface. This cycle has shaped our planet for billions of years. Thanks to a new model, ...

Scientists have solved the mystery of how earthquakes can occur 420 miles deep inside Earth, where extreme pressure and heat ...

The magnitude 7.9 Bonin Islands earthquake sequence, which ruptured deep within the earth near the base of the upper mantle, did not include an aftershock that extended to record depths into the lower ...

One previous study of the Bonin Islands earthquake reported a foreshock sequence for the event, while a second study detected a potentially record-breaking deep aftershock in the lower mantle.

A new computer model shows blobs of cooler rocks (in blue) in Earth's mantle where none should be. A team of geophysicists created a detailed model of Earth's lower mantle using earthquake waves.