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Earth’s interior

A magnified view of white minerals embedded in a gray crustal rock
Posted inNews

The Goldilocks Zone May Be Just Right for Migrating Metals

Kate Wheeling, freelance science writer by Kate Wheeling 9 March 20225 May 2022

Researchers identified a gateway that allows metals critical for renewable energy technologies, like copper and gold, to make their way to the surface.

An image of a nodal seismometer
Posted inResearch Spotlights

Potential of Leaking Modes to Reveal Underground Structure

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 7 March 20227 March 2022

Instead of waiting for earthquake waves to tell scientists about the structure of Earth’s interior, scientists can now use ambient noise from humans to “see” underground.

Artist’s rendering of a planet covered in magma
Posted inNews

Layered Zone Beneath Coral Sea Suggests Ancient Magma Ocean

by Alka Tripathy-Lang 4 February 202225 May 2022

Scientists studying South Pacific earthquakes suggest that an ultralow-velocity zone at the core-mantle boundary may be a remnant of a molten early Earth.

Researchers installing the reference station in a glacier forefield at the foot of the Matterhorn
Posted inNews

Mountains Sway to the Seismic Song of Earth

Richard Sima, freelance science writer by Richard J. Sima 1 February 202227 March 2023

The Matterhorn in the Swiss Alps is in constant motion, gently swaying back and forth about once every 2 seconds.

Cataracts of the Nile River located between Khartoum, Sudan, and Aswan, Egypt
Posted inResearch Spotlights

Recovering Mantle Memories from River Profiles

Kate Wheeling, freelance science writer by Kate Wheeling 14 January 20224 August 2023

Researchers use a closed-loop modeling strategy to validate regional uplift patterns recorded in river profiles across the African continent.

Figure 2 from Wang and Tkalčić [2021]
Posted inEditors' Highlights

Observation of Shear Wave Anisotropy in the Earth’s Inner Core

by Daoyuan Sun 5 January 20228 July 2024

Coda-correlation wavefields reveal direction-dependent inner-core shear-wave speed, ~5 s faster in directions oblique to the Earth’s rotation axis than directions parallel to the equatorial plane.

Image of the diamond from Botswana containing davemaoite as an inclusion
Posted inNews

Diamond Discovery Unearths Secrets of the Deep

by Clarissa Wright 23 December 202130 September 2023

A diamond inclusion has revealed a new mineral, davemaoite, as well as hints about the workings of our planet’s interior.

Painting depicting the surface of Earth during the Hadean eon, with a liquid water ocean, volcanoes, and meteors streaking through the sky
Posted inScience Updates

A Simple Recipe for Making the First Continental Crust

by Anastassia Y. Borisova and Anne Nédélec 5 November 202116 May 2022

Laboratory experiments serendipitously revealed a rock-forming process that might explain how the first continental crust formed on Earth—and possibly on Mars.

Image of a synchrotron X-ray diffraction image collected in a high-pressure/-temperature diamond-anvil cell experiment to determine the deformation behavior of ferropericlase
Posted inEditors' Vox

Processes in Earth’s Mantle and Surface Connections

by H. Marquardt, M. Ballmer, S. Cottaar and J. Konter 24 September 20214 August 2023

A new AGU book presents a multidisciplinary perspective on the dynamic processes occurring in Earth’s mantle.

Two world maps with colored dots and stars denoting maximum mantle temperatures retrieved by the RevPET algorithm for the basaltic melts from the global submarine mid-ocean ridge system.
Posted inEditors' Highlights

A Novel Thermobarometer to Infer Mantle Melting Conditions

by Susanne Straub 16 September 20214 August 2023

The algorithm RevPET automatically reverses the complex multi-phase fractional crystallization path of oceanic basalts and offers new perspectives for advancing mantle thermobarometry.

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Revised Emissions Show Higher Cooling in 10th Century Eruption

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Decoding Crop Evapotranspiration

6 May 20256 May 2025
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