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Geosystems

Schematic showing behavior of magma in the Main Ethiopian Rift
Posted inEditors' Highlights

Gas-Rich, Transcrustal Magma Storage in the Main Ethiopian Rift

by Claudio Faccenna 14 August 20208 October 2021

Increments of melt trapped in crystals reveal upper crustal magmas in the Main Ethiopian Rift are rich in water and other volatiles, leading to extensive diffuse degassing and hydrothermal systems.

Figuring showing thickness of the crust in the High Arctic and Circum-Arctic regions
Posted inEditors' Highlights

Revealing the Arctic Crust

by Claudio Faccenna 25 July 20191 October 2021

A new model, ArcCRUST, reveals with unprecedent resolution the geometry and the thermal state of the oceanic crust of the High Arctic and Circum-Arctic domain.

Researchers look to hydrothermal vents for clues into the movement of Earth’s lower crust
Posted inResearch Spotlights

Is the Lower Crust Convecting Beneath Mid-Ocean Ridges?

by Terri Cook 2 October 20171 October 2021

The first attempt to couple models of hydrothermal circulation and magmatic convection along fast-spreading ridges may explain the spacing of hydrothermal vent fields along the East Pacific Rise.

Posted inEditors' Vox

Competing Models of Mountain Formation Reconciled

by A. Parsons 8 May 201730 September 2021

The author of a prize-winning paper published in Geochemistry, Geophysics, Geosystems describes new insights into crustal mechanics and the formation of the Himalaya.

Researchers examine New Zealand’s Alpine Fault as it nears the end of its seismic cycle.
Posted inResearch Spotlights

Alteration Along the Alpine Fault Helps Build Seismic Strain

by Terri Cook 7 March 20176 October 2021

Detailed analysis of cores drilled through New Zealand's most dangerous on-land fault indicates that its permeability and strength are altered by mineral precipitation between seismic events.

aoraki-mount-cook-new-zealand-alpine-fault
Posted inResearch Spotlights

Revising the Displacement History of New Zealand's Alpine Fault

by Terri Cook 22 July 201629 September 2021

A reinterpretation of structural and paleomagnetic data suggests that New Zealand's Alpine Fault accommodates a far greater percentage of geologically recent plate motion than previously thought.

Posted inResearch Spotlights

Characterizing the Fault Beneath the Marmara Sea

by Kate Wheeling 29 February 201628 October 2021

Researchers mine seismic wave data to elucidate the stress relief system of the Main Marmara Fault beneath Turkey's inland sea.

Posted inResearch Spotlights

Dating Lava Domes in California's Salton Trough

by Terri Cook 10 November 20154 October 2021

Scientists use a trio of techniques to resolve the age and duration of rhyolite volcanism of the Salton Buttes.

Posted inResearch Spotlights

Probing for Earthquakes' Origins

by J. Calderone 22 September 20156 October 2021

To better understand how earthquakes nucleate, scientists spy on the Alpine Fault in New Zealand.

Posted inResearch Spotlights

A Modified Technique to Remotely Detect Subsurface Melt

by C. Schultz 5 March 201530 September 2021

Adapting a much-used analytical method to consider anisotropy opens up the approach to new uses.

Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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