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Geochemistry, Geophysics, Geosystems

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Researchers search for signals of an eruption of the Villarrica volcano in Chile
Posted inResearch Spotlights

Can Volcanic Gas Levels Predict an Eruption?

Alexandra Branscombe by A. Branscombe 12 June 201722 December 2021

Researchers test whether the changing composition of volcanic gas can signal a coming eruption in Chile’s Villarrica volcano.

Posted inEditors' Vox

Competing Models of Mountain Formation Reconciled

by A. Parsons 8 May 201724 March 2023

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 use zircon dating to unravel the processes behind the Toba supereruption.
Posted inResearch Spotlights

What Led to the Largest Volcanic Eruption in Human History?

by S. Witman 13 April 201716 March 2022

A mineral-dating project at the Toba caldera in Indonesia sheds light on the science of supereruptions.

Researchers use samples from Mt. St. Helens to test paleomagnetic methods.
Posted inResearch Spotlights

Explaining Why Some Paleomagnetic Results Fail

by Terri Cook 22 March 201727 January 2023

Reordering of mineral crystal lattice structures during laboratory heating may explain the frequent need to reject results of experiments that estimate the intensity of Earth's past magnetic fields.

Researchers work to track the fragmented magma bombs that fly through the air during an explosive eruption
Posted inResearch Spotlights

Tracking Volcanic Bombs in Three Dimensions

Leah Crane by L. Crane 13 March 20172 May 2022

A new method allows researchers to precisely track in three dimensions bits of fragmented magma as they are expelled in explosive volcanic eruptions.

New research links ocean acidification and its effect on extinction events to better understand Earth’s ancient seas.
Posted inResearch Spotlights

Exploring Ancient Ocean Acidification in the Rock Record

Alexandra Branscombe by A. Branscombe 10 March 201712 September 2022

Scientists studying Earth's ancient oceans use a new method to measure ocean acidification and its effect on extinction events.

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 201724 March 2023

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.

Researchers trace boron in fluids released by subducting slabs to assess how tectonic plates and ocean waters interact at subduction zones.
Posted inResearch Spotlights

Fingerprinting the Source of Fore-Arc Fluids

by Terri Cook 9 February 20178 February 2023

A new model tracks boron and other tracers in fluids expelled from subducting slabs to help identify the fluids' source regions and migration routes.

Drilling reveals the mechanics at play behind an ancient eruption.
Posted inResearch Spotlights

Deep Drilling Reveals Puzzling History of Campi Flegrei Caldera

Alexandra Branscombe by A. Branscombe 1 February 20172 May 2022

Results show that caldera collapse attributed to a super eruption almost 40,000 years ago was smaller than what scientists expected. So what might have really happened?

Studying volcanic eruptions in Iceland lends insight into the mantle temperature below.
Posted inResearch Spotlights

A Significantly Hotter Mantle Beneath Iceland

by Terri Cook 18 November 20164 August 2023

Estimates of crystallization temperatures from four eruptions in northern Iceland offer improved constraints on the mantle's temperature beneath this anomalous divergent plate boundary.

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