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geochemistry

A man wearing a hat and a backpack takes a selfie in front of a lake inside a volcanic caldera.
Posted inFeatures

Daniel Pastor-Galán: Studying Ancient Earth, with a Little Help from His Friends

by Nathaniel Scharping 3 August 20263 August 2026

This rock lover carries his musical inspirations with him as he peers far back in geologic time.

A woman peeks through part of a blue machine, which frames her face in a rectangle. She has her hand on a surface next to a small piece of rock.
Posted inFeatures

Elizabeth Cottrell: From Collecting Rocks to Curating the National Rock Collection

by Rebecca Owen 3 August 20263 August 2026

Research geologist Elizabeth Cotrell turned a love of science into a career at one of the nation’s most important geological resources.

One large crater, containing a subcrater, and several smaller craters, speckle a portion of Mars’s surface.
Posted inResearch Spotlights

What Australian Lakes Showed Us About Martian Hydrology

by Saima May Sidik 27 July 202627 July 2026

Studying the hydrology of the Yilgarn Craton reveals how the Red Planet may have evolved.

A man wearing flip-flops, loose pants, and a turban bends over to pump water into a metal bucket. There are shrubs and greenery behind him.
Posted inResearch Spotlights

Students Enable Widespread Water Monitoring in India

by Saima May Sidik 20 July 202620 July 2026

High school students and other volunteers monitored water for pollutants just as well as professionals.

Two green tents, a pile of seven long white boxes, and a collection of other miscellaneous objects make up a field site in the middle of a snowy landscape.
Posted inNews

These “Clumped” Molecules Could Offer Clues About Earth’s Climate

by Emily Gardner 15 July 202615 July 2026

Researchers investigated concentrations of clumped methane isotopes to learn more about how levels of the potent greenhouse gas have changed over the industrial era.

Diagram from the article.
Posted inEditors' Highlights

Fluid-Driven Reactions Restore Fault Strength Between Earthquakes

by Marcos Moreno 30 June 202630 June 2026

In fault gouge, fluids drive chemical healing by cementing grains, a mechanism for seismic slip in rocks frictionally expected to creep. This cohesion matters for fault stability.

两个人,一个穿着黄色背心,一个穿着灰色长袖衬衫,正抬头看着一块岩石表面。
Posted inResearch Spotlights

6.16亿年前波罗的大陆在哪里?

by Saima May Sidik 3 June 20263 June 2026

通过解析古老岩石中的磁信号,我们得以重新认识这块古大陆在埃迪卡拉纪时期的位置。

A photograph from the surface of Mars shows two insets zoomed in on rocks. The insets show the rocks with a rough texture and blue and gray colors.
Posted inResearch Spotlights

Carbon-Rich Rocks May Have Cooled the Ancient Martian Atmosphere

by Nathaniel Scharping 28 May 202628 May 2026

Data from the Perseverance rover indicate abundant carbonates in Jezero Crater, a finding with implications for Mars’s climatic history.

The gentle green slopes of a mountain range with a small field camp nestled at the base.
Posted inNews

Mongolian Mountains Rose When the Crust Bounced Back

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 15 May 202618 May 2026

A plate folded, the lithosphere sank, and up popped a mountain range.

Two people, one wearing a yellow vest and one in a gray long-sleeved shirt, look up at a rock face.
Posted inResearch Spotlights

Where Was Baltica 616 Million Years Ago?

by Saima May Sidik 5 May 20263 June 2026

Disentangling magnetic signals in its ancient rocks gives an updated view of the paleocontinent’s position during the Ediacaran period.

Posts pagination

1 2 3 … 27 Older posts
Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

Getting to Know Uranus’s “Breathing” Bow Shock

7 August 20267 August 2026
Editors' Highlights

Late Campanian Arabia-Eastern Anatolia Collision

4 August 20264 August 2026
Editors' Vox

How Bubbles Reshape Air-Sea Gas Exchange

5 August 20265 August 2026
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