Scientists have traced a 60-million-year volcanic trail from Iceland to Ireland to a deep mantle plume that shaped the North ...

An open question for solid-earth scientists is the amount of water in Earth’s interior. The uppermost mantle and lower mantle contain little water because their dominant minerals, olivine and ...

They used imagery techniques to map the lower crust and uppermost mantle of the Sierra Nevada,allowing them to see changes in how seismic waves as they moved beneath the surface.

A new study suggests that the mantle is home to much more water than was previously believed. Seismic activity around the Mariana Trench have revealed that subducting tectonic plates are dragging ...

Deformation in the crust and mantle — measured using seismic anisotropy — is poorly constrained in the western United States because of inconsistencies in the existing data. A three ...

Their results suggest that aluminous phase B could explain seismic velocity anomalies in the Earth's mantle transition region and uppermost lower mantle. Skip to main content.

The team imaged the lower crust and uppermost mantle beneath the Sierra Nevada with receiver function analysis, which uses seismic waves that change as they cross structures beneath the surface.

Earth’s solid outer layer, which includes the crust and the uppermost mantle, is called the lithosphere. It is between 36 and 87 miles (60 and 140 kilometers) thick , a 2023 study in the journal ...