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feldspar

Schematic representation of the model presented in this study.
Posted inEditors' Highlights

What Electrons Can Tell Us About the Speed of Sand

by Harrison Gray 13 February 202328 March 2023

A new sediment tracer uses the interactions between radiation, charge, and the Sun to uncover the hidden transport histories of sand grains.

A snow-capped volcano appears against a bright blue sky and is reflected in lake water of the same bright blue. In the foreground are green shrubs and a boulder.
Posted inNews

Supervolcanoes Linger a While, Then Rush to Erupt

Damond Benningfield, Science Writer by Damond Benningfield 12 September 202212 September 2022

Geologists examined crystals in rock from four massive eruptions in the Chilean Andes.

Yangtze River
Posted inResearch Spotlights

Researchers Home in on the Age of the Yangtze River

Joshua Learn, Science Writer by Joshua Rapp Learn 10 March 202126 January 2023

Findings on the river’s age also have implications for past landscape change in Asia.

Vinícius Mendes collects a sediment sample from a former river terrace of the Parnaíba River in Brazil.
Posted inResearch Spotlights

A New Proxy for Past Precipitation

Kate Wheeling, freelance science writer by Kate Wheeling 16 September 201910 February 2023

Researchers used luminescence signals from marine sediment cores to bolster estimates of precipitation levels on land over the past 30,000 years.

Residents flee the danger zone surrounding Bali’s Mount Agung after a series of eruptions in late November 2017.
Posted inScience Updates

Forensic Probe of Bali’s Great Volcano

by F. M. Deegan, V. R. Troll and H. Geiger 12 February 201912 September 2022

Evidence from volcanic crystals sheds light on magma storage under Mount Agung and helps explain this giant volcano’s frequent eruptions.

The Washington Monument peeks out from behind a sandstone gatepost
Posted inGeoFIZZ

Self-Guided Tour of the Geology in D. C. Buildings

by L. Strelich 6 December 201813 October 2022

The architecture of the nation’s capital reveals a secret geologic history—take a walking tour to spot the interesting fossils and minerals in the stones used to build the halls of power.

View of the Grand Canyon of Yellowstone National Park
Posted inNews

Pinpointing the Trigger Behind Yellowstone's Last Supereruption

by A. Woodward 4 January 201712 September 2022

Geologists suggest that mixing of magma melt pockets could have caused the explosion a little more than 600,000 years ago.

Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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