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 ...

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

Since then, an international team has been analyzing the composition of the mantle, especially its minerals. Harzburgite — a variety of peridotite — is the main rock within the core.

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.

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 ...

Get Instant Summarized Text (Gist) Two continent-sized regions in Earth's deep mantle, known as Large-Low-Velocity-Provinces (LLVPs), have distinct evolutionary histories and chemical compositions ...