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olivine

The Tajogaite volcano erupts with lava and gases in 2021.
Posted inScience Updates

Volcanic Anatomy, Mapped as It Erupts

by Vittorio Zanon and Luca D’Auria 27 September 202427 September 2024

Testing during the 2021 Tajogaite eruption on La Palma demonstrated the value of near-real-time petrological analyses as a supplement to seismic and geochemical data for eruption monitoring.

A brilliant green mineral juts out from a chunk of blackish rock dotted with other patches of green crystals.
Posted inNews

Olivine May Have Given Life a Jump Start

by Elise Cutts 1 February 20241 February 2024

A mineral common throughout the solar system nudges a reaction that produces sugar molecules from formaldehyde.

Graphs and diagrams from the paper.
Posted inEditors' Highlights

Deciphering the History of a Rock’s Crystallization

by Nikolai Bagdassarov 26 June 202322 June 2023

By combining a phase field function approach with bulk thermodynamics of mineral phases, the thermal history of a rock can now be deciphered from its distribution of mineral phases.

Close-up of green olivine sand grains
Posted inNews

Can These Rocks Help Rein in Climate Change?

Tim Hornyak, Science Writer by Tim Hornyak 27 September 20221 June 2023

Spreading olivine on beaches could accelerate ocean uptake of carbon dioxide and potentially limit climate change. The concept and execution still face some scrutiny from scientists.

A wide and flat rock sample with a gray exterior sits on a lighter gray background. Green crystals inside the rock are exposed on the side of the rock facing forward. The crystals are small and uniform in size and light green to dark green in shade.
Posted inNews

Good News: Rocks Crack Under Pressure from Mineral CO2 Storage

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 3 February 20221 June 2023

When carbon mineralizes in stone, each new fracture exposes more surfaces that can react with and trap CO2, enhancing a rock’s storage capacity.

Image of orange and red smoke rising from behind the black banks of a lava channel at night
Posted inNews

Insights from the Depths of Hawaii’s Kīlauea Volcano

Kate Wheeling, freelance science writer by Kate Wheeling 11 March 202122 September 2022

One of the world’s best monitored and most active volcanos still has secrets to yield, and researchers are turning to vapor bubbles trapped in melt inclusions to find them.

Scanning Electron Microscope images of deformed olivine micropillars
Posted inEditors' Highlights

Olivine Micropillars Reveal Shallow Lithosphere Rheology

by Y. Bernabé 24 July 202022 September 2022

Micrometer scale investigation of the rheological properties of olivine in pressure and temperature conditions corresponding to the shallow lithosphere.

Scientists take spectrometric readings at a rock outcrop in Western Australia
Posted inFeatures

Mars 2020 Team Using Australian Rocks in Search for Life on Mars

by A. J. Brown, C. E. Viviano and T. A. Goudge 2 July 202022 September 2022

Scientists are investigating evidence of ancient terrestrial microbes preserved in Australia as well as mineral maps derived from Mars orbiter data to shed light on how to search for life on Mars.

World map showing location of permanent geomagnetic observatories and their data availability for electromagnetic source characterization.
Posted inEditors' Highlights

Globally Variable Water Content in the Mantle Transition Zone

by S. D. Jacobsen 9 June 20204 August 2023

Using electromagnetic waves originating in the ionosphere and magnetosphere, conductivity profiles reaching the deep upper mantle show surprising variability in water content.

Mantle-derived peridotite xenolith from San Carlos, Arizona, showing green olivine crystals.
Posted inScience Updates

Understanding Electrical Signals from Below Earth’s Surface

by A. Pommier and J. Roberts 19 November 20189 March 2023

A new version of a free Web application (SIGMELTS 2.0) helps Earth scientists interpret electrical anomalies in Earth’s crust and mantle and track the sources of earthquakes and volcanic eruptions.

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Features from AGU Publications

Research Spotlights

Proposed Experiment Could Clarify Origin of Martian Methane

12 May 202512 May 2025
Editors' Highlights

First Benchmarking System of Global Hydrological Models

7 May 20257 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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