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hematite

A view of a low cliff on Mars, showing different layers of rocks
Posted inResearch Spotlights

A New Origin Story for Mars’s Burns Formation

by Morgan Rehnberg 3 May 20233 May 2023

The Red Planet’s Grasberg and Burns formations have different compositions today, but they may have started out the same way.

Transmission electron microscope images of diverse synthetic hematite grains were used to explain key domain state and anisotropy signals in first-order reversal curve (FORC) diagrams.
Posted inEditors' Highlights

A Step Towards Understanding the Magnetic Properties in Hematite

by Agnes Kontny 26 April 20228 July 2024

Scientists present the most comprehensive available magnetic domain state and anisotropy study for synthetic and natural hematite from first-order reversal curve diagrams.

A red rock tower in front of a backdrop of cloudy sky
Posted inFeatures

Is Earth’s Core Rusting?

by Jiuhua Chen and Shanece S. Esdaille 25 April 20223 January 2023

If subduction carries hydrous minerals deep into Earth’s mantle, they may “rust” the iron outer core, forming vast sinks of oxygen that can later be returned to the atmosphere.

Inspecting mine drainage in a river
Posted inEditors' Vox

Using Hematite to Decipher Past Climates and Environments

by Zhaoxia Jiang, Qingsong Liu, Andrew Roberts, Mark J. Dekkers, Vidal Barrón, José Torrent and Sanzhong Li 7 February 20223 January 2023

The magnetic and color properties of the mineral hematite give clues to past environmental conditions and is being used for paleoclimatic reconstruction.

Red rocks of the Chinle Formation at Petrified Forest National Park
Posted inNews

Red Rocks: Using Color to Understand Climate Change

by R. Mazumdar 30 March 20213 January 2023

A recent study on hematite formation during the Triassic may help predict the effects of climate change on contemporary monsoonal environments.

Selfie taken by the Curiosity rover at the top of Vera Rubin ridge
Posted inEditors' Vox

Curiosity Solves the Mystery of Gale Crater’s Hematite Ridge

by A. Deanne Rogers, Mariek E. Schmidt and A. Fraeman 31 July 202024 April 2024

A new special issue of JGR: Planets details the water-rich history of a distinctive geomorphic feature on Mars dubbed Vera Rubin ridge, as investigated by the Curiosity rover.

A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

New Global River Map Is the First to Include River Bifurcations and Canals

15 May 202514 May 2025
Editors' Highlights

Old Forests in a New Climate

15 May 202514 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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