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Eos

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iron

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 202225 April 2022

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 202220 April 2022

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

Plot showing distribution of iron species at three locations
Posted inEditors' Highlights

Zero-valent Iron in the Oxidizing Atmosphere?

by Jonathan H. Jiang 26 October 20205 May 2022

A comparative study of urban, semi-urban, and rural sites reveals that the species of atmospheric iron varies depending on location.

A graph showing total conductive heat flow in the core as a function of radius for pure iron (black line) and compositional models containing Fe-Ni-S (blue line) and Fe-Ni-Si (red line)
Posted inEditors' Highlights

Thermal Convection Can Power the Geodynamo

by S. D. Jacobsen 4 November 201910 March 2022

New high-pressure experiments on fluid iron suggest thermal convection without compositional buoyancy is sufficient to drive the dynamo generating Earth’s magnetic field.

Researchers draw up sediment cores from seabed at Juan de Fuca Ridge to analyze iron and copper deposits.
Posted inNews

Iron Readings Hint That Ocean Depth Influences Seabed Volcanism

by N. Lanese 18 January 20185 May 2022

Water pressure on mid-ocean ridges may affect magma production kilometers beneath the ocean floor.

Posted inNews

Cave-Dwelling "Slime Curtains" Cycle Nitrogen and Iron

by C. Sullivan 4 November 201512 April 2022

In a cave accessible only by daredevil divers, extraordinary microbial colonies metabolize nitrogen and iron nutrients and possibly remove pollutants from water.

Posted inResearch Spotlights

The Enigmatic Core Properties of the Inner Earth

by S. Palus 28 October 20153 May 2022

A new study explores the possibility of cubic iron alloy structure at our planet's core.

Posted inResearch Spotlights

Microbial Communities Form Iron Shells in Abandoned Mines

by David Shultz 10 September 201522 February 2022

Fungi and bacteria deposit metal ions on steel objects left behind by miners. These metals form strange clam-like shells on the steel surfaces.

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