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Earth's mantle

Diagram from the study
Posted inEditors' Highlights

Piecing Together the Roots of the Ancient Australian Continent

by Paul Asimow 25 October 202326 October 2023

Mineral compositions from numerous volcanic rocks that sample the mantle keel beneath Western Australia’s Kimberley Craton reveal the temperature and mineralogy that explain its long-lived stability.

A flaming asteroid entering a planet’s atmosphere
Posted inNews

Meteor Impact Site Holds 200-Million-Year-Old Atmospheric Snapshot

by Elise Cutts 19 October 202329 November 2023

Minerals formed in short-lived hydrothermal systems set off by a meteor impact in France preserved information about noble gases in the ancient atmosphere.

Photo of a snow covered mountain
Posted inEditors' Highlights

Illuminating the Complex Structural Fabric Beneath the European Alps

by Fiona Darbyshire 5 October 20233 October 2023

A new study investigates the dynamics of the complex continental collision that formed the European Alps and reveals how structural alignments change with depth.

An ocean wave prepares to break, while other waves close in behind it under a hazy sky.
Posted inResearch Spotlights

Exploring the Mantle Through Microseisms

by Rebecca Owen 21 September 202321 September 2023

A new method for examining the tiny vibrations of Earth caused by ocean swells could help reveal details of deep-Earth structure.

Diagrams showing lithospheric stretching with rifting.
Posted inEditors' Highlights

Uncovering Mantle Heterogeneities Beneath Drifting Continents

by Fabio A. Capitanio 11 September 20236 September 2023

Computational models of the composition and volumes of magmas during continental rifting evolution provide clues on the heterogeneities of the deep melting mantle.

Two graphs from the paper.
Posted inEditors' Highlights

Pliocene Conveyer Belt in the Pacific

by Vincent Salters 6 September 20237 September 2023

Ocean Drilling Program cores and helium isotopes put better constraints on the ocean circulation in the north Pacific.

Illustration of the Earth's internal structure.
Posted inEditors' Vox

Digging Deep into Interactions Between the Core and Mantle

by Takashi Nakagawa, Taku Tsuchiya, Madhusoodhan Satish-Kumar and George Helffrich 24 July 20234 August 2023

A new book presents major advances in our understanding of core-mantle interaction and co-evolution, and showcases technological developments improving our insights into deep Earth processes.

Three-dimensional wireframe representation of Earth with a red spotted sphere in the center. The continents are shown in turquoise, and yellow lines radiate from a point on the bottom left continent.
Posted inNews

Mounds of Ancient Ocean Floor May Be Hiding Deep in Earth

Tim Hornyak, Science Writer by Tim Hornyak 13 June 20234 August 2023

A mysterious seismic feature at the bottom of Earth’s mantle is more widespread than previously thought.

Graph from the paper
Posted inEditors' Highlights

The Depleted Mantle Merry-Go-Round 

by Vincent Salters 5 April 20234 August 2023

Abyssal peridotites show through their isotopic composition a complex history. From differences we can infer the existence of ultra depleted mantle and an uneven contribution to ridge magmatism.

Two maps showing locations of seismic arrays.
Posted inEditors' Highlights

Can Anelastic Attenuation of Oceanic Mantle be Reliably Measured?

by Fan-Chi Lin 26 October 20224 August 2023

A new study demonstrates that robust anelastic attenuation measurements can be made across ocean bottom seismic arrays at different locations using surface wave array analysis.

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