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geochemistry

Photo of the red Martian surface
Posted inNews

Ancient Mars May Have Had a Cyclical Climate

by Vijay Shankar Balakrishnan 29 September 202329 September 2023

Hexagonal structures in sediments are evidence of repeated wet and dry conditions on the Red Planet.

A silver wire mesh collects droplets of water in front of a gray background.
Posted inNews

Low-Tech, Energy-Free Tool Collects and Cleans Fog Water

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 28 September 20237 February 2024

A new fog harvester could benefit communities that lack access to clean freshwater.

Posted inNews

Ароматы в ледяном керне рассказывают о жизнедеятельности человека

by Carolyn Wilke 20 September 202320 September 2023

В ледяном керне самой высокой горной вершины Европы содержатся источающие запах молекулы, свойства которых отражают экономические взлеты и падения Советского Союза.

Une nouvelle étude a pu déterminer l’origine d’arbres abattus illégalement dans des régions comme le Kalimantan central à Bornéo, en Indonésie.
Posted inNews

Établir une carte d’identité du bois pour freiner la déforestation illégale

Rishika Pardikar, Science Writer by Rishika Pardikar 22 August 202322 August 2023

Des chercheurs ont créé un nouvel outil d’analyse pour améliorer la traçabilité du bois qui pourrait permettre d’appliquer la législation de l’Union européenne visant à lutter contre la déforestation.

A blue and white glacier over water
Posted inNews

Evidence of Earth’s Oldest Glaciers Found in South Africa

by Nathaniel Scharping 17 August 202317 August 2023

The ancient glaciers hint at an Archaean Earth that may have looked similar in some ways to our own time.

A grayscale image of the Moon’s surface shows bumps, ridges, and craters on the Moon’s farside.
Posted inNews

Rare Granite Body Discovered on Moon’s Farside

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 16 August 202316 August 2023

The granite couldn’t have formed the same way that it does on Earth—with liquid water and plate tectonics. So how did it get there?

Sunlight shines through plumes of ice crystals and dust grains jetting from a gray sphere.
Posted inNews

Essential Ingredient for Life Found on Enceladus

by Matthew R. Francis 27 July 202327 July 2023

Icy plumes from Saturn’s moon Enceladus contain phosphorus, part of the biochemistry of life—the first time the element has been found in a liquid environment beyond Earth.

Aerial view of the island of Emae, Vanuatu, surrounded by ocean
Posted inNews

Stone Chemistry Records Pacific Migration

by Caroline Hasler 6 July 20236 July 2023

Scientists used the chemistry of stone artifacts to trace human migration in the Pacific, revealing evidence of long voyages and cultural exchange.

Photo of fog-filled tropical forest
Posted inNews

Fingerprinting Wood to Curb Illegal Deforestation

Rishika Pardikar, Science Writer by Rishika Pardikar 21 June 202322 August 2023

Researchers developed a new forensic tool for tracing the origins of timber that could enable enforcement of antideforestation legislation in the European Union.

Map and graphs from the paper.
Posted inEditors' Highlights

Machine Learning Helps Constrain the Thickness of Ancient Crust

by Emily Chin 1 June 202331 May 2023

A machine learning model trained using data on the chemical composition of magmatic rocks yields comparable, if not better, results to previously developed geochemical proxies.

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Features from AGU Publications

Research Spotlights

Lab Setup Mimics Arctic Erosion

14 November 202514 November 2025
Editors' Highlights

Taking Carbon Science Out of Orbit

12 November 202512 November 2025
Editors' Vox

Announcing New AGU Journal Editors-in-Chief Starting in 2026

12 November 202513 November 2025
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