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geochemistry

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.

A view of a low cliff on Mars, showing different layers of rocks
Posted inResearch Spotlights

A New Origin Story for Mars’s Burns Formation

by Morgan Rehnberg 3 May 20233 May 2023

The Red Planet’s Grasberg and Burns formations have different compositions today, but they may have started out the same way.

A dark image of a wildfire under hazy skies.
Posted inNews

Wildfire Smoke Destroys Ozone

by Elise Cutts 12 April 20233 June 2024

Smoke aerosols from large wildfires are the perfect reaction surface for chlorine chemicals, speeding their transformation from ozone-friendly forms to reactive ones.

Artist’s impression of a sub-Neptune or gas dwarf exoplanet
Posted inNews

Hydrogen May Push Some Exoplanets off a Cliff

by Julie Nováková 10 April 202310 April 2023

High-pressure reactions of hydrogen and iron could explain gaps in the distribution of exoplanets.

Schematic diagram showing the workflow presented in the paper.
Posted inEditors' Highlights

A New Approach to Spinning-Up Passive Tracers in Ocean Models

by Matthew Long 9 March 202317 March 2023

A new computational method enables finding steady-state distributions of tracers in ocean circulation models, opening opportunities for physical and biogeochemical insight.

Photo of a brown landscape with a waterfall in the center flowing into a turbulent pool
Posted inNews

Silicate Weathering Throttles the Global Thermostat

by Nathaniel Scharping 8 March 20238 March 2023

The natural breakdown of some rocks sucks carbon dioxide out of the atmosphere. Knowing how quickly it happens could help scientists engineer solutions to the climate crisis.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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