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 ...

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.

Deep within Earth’s mantle lie two enormous, continent-sized structures known as LLVPs. Scientists once believed these ...

The mantle can, rarely, be sampled directly, as in the study discussed in the News & Views article on page 215 of this issue. But its composition can also be inferred from basaltic rocks in the ...

Continent-size islands deep inside Earth's mantle could be more than a billion ... Another feature, such as a change in composition, must be responsible for the unexpected result, the team suspected.

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 ...

the interaction of the Earth's mantle with other major reservoirs (continental crust, core), and the estimation of the bulk composition of major Earth reservoirs, to more localized aspects of melt ...

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 ...