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geology

A person crouches with an outstretched arm atop a dried lake bed coated with white salt.
Posted inNews

Last Chance Lake Harbors the Highest Known Levels of Phosphate

Katherine Kornei, Science Writer by Katherine Kornei 29 February 202429 February 2024

Bodies of water such as this might have functioned as cradles of life, given their unique biogeochemistry.

Diagram from the study.
Posted inEditors' Highlights

Law and Order for Friction and Faults: One Law to Rule Them All

by Peter Zeitler 19 January 202418 January 2024

Faults are made of complex materials with complex behaviors, and having a single model that can predict these behaviors is an advance in understanding deformation and the earthquake cycle.

A truck is parked next to a pile of sand at a construction site.
Posted inNews

Sandy Fingerprints Trace Supply Sources

by Molly Herring 4 January 20244 January 2024

Geological forensics can trace raw materials back to their source. As global sand demand increases, a new tool could help identify illegal and informal sand mining.

An earthworm crawls atop dark brown soil.
Posted inNews

Quartz-Gobbling Worms Are Weathering Earth’s Soils

by Grace van Deelen 14 December 202314 December 2023

New research in mineral weathering shows that earthworms may be an important contributor to Earth’s weathering cycle.

On a flooded street in Lagos, a yellow vehicle’s wheels are submerged in water, and people walk around the water on a sidewalk.
Posted inNews

Sinking Cities and Rising Waters

by Leigh Dorsey 8 December 20238 December 2023

Climate-driven sea level rise combines with land subsidence in some of Africa’s fastest-growing cities.

A mound of clay in a flow tunnel is eroded by water.
Posted inNews

Did These Curious Rock Formations Inspire the Great Sphinx?

by Nathaniel Scharping 3 November 20233 November 2023

New research says it’s plausible the Great Sphinx started life as a geomorphological oddity known as a yardang.

A dark cliff next to a group of people with snowmobiles
Posted inNews

Digitally Preserving Svalbard’s Fragile Geology

by Bill Morris 18 October 202318 October 2023

A team of researchers is making the iconic rock outcrops of Svalbard available to the world through an open-source database of virtual geological models.

Black-and-white oblique view of an ancient delta on Mars’s surface taken by a satellite
Posted inResearch Spotlights

Optimizing Carbonate Classification on Mars

Sarah Derouin, Science Writer by Sarah Derouin 7 September 20237 September 2023

Combining data from several of the Perseverance rover’s spectroscopic sensors offers a more accurate means to classify carbonate minerals that may hold hints of ancient life.

An artificially colorized view of a rocky valley between two hills on Mars, with part of the Curiosity rover visible at bottom. The right portion of the image, under blue sky, represents the scene in the morning, and the left portion, under yellow sky, the afternoon.
Posted inResearch Spotlights

Mars Has Far Fewer Minerals Than Earth Does

Rachel Fritts, Science Writer by Rachel Fritts 6 September 20236 September 2023

The development of plate tectonics and life on Earth provided avenues for mineral evolution that did not occur on Mars, resulting in relatively limited mineral diversity on the Red Planet.

Small sinkholes viewable along the wall of a quarry
Posted inNews

Where the Ground Gives Way

by Danielle Beurteaux 5 September 20235 September 2023

Sinkholes are a significant hazard, but where are they most likely to happen? A new study identifies hot spots in the contiguous United States.

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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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