This sample, which is more than six times longer than the previous core of mantle rock, has given us a glimpse into the composition of this mostly inaccessible layer of the Earth. You can read ...

G eoscientists have used earthquakes to study the composition of the lower portion of the Earth’s mantle under the Pacific ...

The source for the isotopically-enriched Hawaiian magmas contains peridotites that experienced near-surface melting prior ...

The isotopic composition of titanium is modified when crust is formed on Earth. This makes titanium isotopes useful to trace how surface material like the crust is recycled in Earth's mantle ...

Scientists have revealed that two continent-size regions in Earth's deep mantle have distinctive histories and resulting chemical composition, in contrast to the common assumption they are the same.