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lava & magma

View of steep hills with exposures of dark rock as well as patches of green vegetation
Posted inFeatures

Baked Contacts Focus a Lens on Ancient Lava Flows

by Anthony Pivarunas, Margaret Avery, Joseph Biasi and Leif Karlstrom 1 February 20231 February 2023

Two studies, conducted 40 years apart, show how combining field observations and thermal modeling can reconstruct the history of massive lava flows and how they altered the surrounding landscape.

A pebble-sized meteorite sits next to a dime for scale.
Posted inNews

Martian Meteorites Offer a Tantalizing Glimpse of the Red Planet

by Katherine Kornei 23 November 202223 November 2022

By studying these literal chunks of Mars, scientists are learning more about the Red Planet’s deep interior and impact history.

diagram of a subduction zone
Posted inEditors' Highlights

Tracing Oxidizing Slab Fluids in Cold Volcanic Arcs

by Susanne Straub 28 October 202215 November 2022

Elevated copper isotope ratios in arc magmas from fluid-rich cold subduction zones support the role of oxidizing fluids from the subducted lithospheric serpentinite in the oxidization of arc magmas.

A mass of steaming, orange-glowing lava consumes a street sign as it flows over a roadway.
Posted inResearch Spotlights

A Better Operational Lava Flow Model

by Morgan Rehnberg 26 October 202226 October 2022

By segmenting the vertical structure of a lava flow, the Lava2d model provides more realism to operational lava forecasts.

Two block diagrams that show how the George Sound shear zone (GSSZ) grew through the crust in space and time.
Posted inEditors' Highlights

Feedbacks Between Deformation and Magmatism as Shear Zones Grow

by Alexis Ault 29 September 202228 September 2022

New research reveals how the presence and absence of magmatism governs how shear zones initiate, grow, and reactivate to connect lower and upper crustal deformation.

A snow-capped volcano appears against a bright blue sky and is reflected in lake water of the same bright blue. In the foreground are green shrubs and a boulder.
Posted inNews

Supervolcanoes Linger a While, Then Rush to Erupt

by Damond Benningfield 12 September 202212 September 2022

Geologists examined crystals in rock from four massive eruptions in the Chilean Andes.

A circular hole drilled into Gale Crater on Mars.
Posted inNews

Unraveling the Mystery of a Rare Mineral on Mars

by Clarissa Wright 7 September 20223 January 2023

The discovery of tridymite in Mars’s Gale Crater triggered debate about the rare mineral’s origins. A research team recently suggested a scenario with explosive implications.

Satellite image of ancient lava flows on Mars
Posted inNews

This One Simple Trick Helps Us Understand How Much Water Is in Martian Lavas

by Erik Klemetti 24 August 202216 September 2022

Understanding how much water is in Martian magma is vital for understanding whether the Red Planet had seas in its early history.

A diagram and a graph showing how ocean island eruptions are much more likely to exhibit SO2 degassing and deformation.
Posted inEditors' Highlights

Why Do Arc Volcanoes Deform Less Than Ocean Island Volcanoes?

by Paul Asimow 15 August 202215 November 2022

Volcanic ground deformation is not simply correlated with erupted volume. Researchers propose that high concentrations of magmatic volatiles make systems more compressible and suppress deformation.

Two phase diagrams calculated by (a) Perple_X and (b) the new MAGEMin software.
Posted inEditors' Highlights

A New, Fast Computational Tool for Magmatic Phase Equilibria

by Paul Asimow 11 August 202222 December 2022

Thermodynamic calculations in multiphase, multicomponent magmatic systems can be slow and buggy. A new parallel architecture solves the free energy minimization problem much faster than alternatives.

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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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