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Geochemistry

A GEOTRACES research vessel in the Arctic Ocean
Posted inResearch Spotlights

Diurnal Oxidation for Manganese Minerals in the Arctic Ocean

by Morgan Rehnberg 13 January 202213 January 2022

The relative abundance of different oxidation states for this important micronutrient varies on the basis of how much available sunlight there is.

A chat, or waste, pile near the Tar Creek Superfund site in Oklahoma.
Posted inNews

Community Input Drives Superfund Research

by Robin Donovan 14 December 20217 March 2022

Researchers identified geochemical tracers for lead and investigated Oklahomans’ concerns at the Tar Creek Superfund site.

Roman ruins in the ancient city of Volubilis, Morocco
Posted inNews

Roman-Era Millstone and Mixer Makers Knew Their Rocks

by Carolyn Wilke 18 November 202121 March 2022

The geochemistry of basalt millstones and mixers from the city of Volubilis suggests a local origin—and that rocks were picked for specific purposes, from crushing olives to mixing dough.

Sunlight reflecting off tiny, interplanetary “cosmic dust” particles
Posted inResearch Spotlights

Cosmic Dust May Be Key Source of Phosphorus for Life on Earth

by Sarah Stanley 17 November 202117 November 2021

When tiny particles enter Earth’s atmosphere, a newly described series of chemical reactions may lead to production of phosphorus-containing molecules that are essential for biological processes.

A packer installation near Ibra, Oman, in January 2019
Posted inResearch Spotlights

Shedding Light on Microbial Communities in Deep Aquifers

by Kate Wheeling 20 October 202116 May 2022

Researchers use a packer system to study the microbial communities living in waters sampled from deep, uncontaminated peridotite aquifers.

The LIBS instrument that is part of SuperCam
Posted inNews

Lasers Have the Makings of a 21st-Century Geoscience Tool

by Richard J. Sima 15 October 202120 December 2021

Laser-induced breakdown spectroscopy is a versatile geochemical tool being used in a wide range of applications, from Mars rovers to earthly rock identification.

Trays of perovskite silicon solar cells sit in a clear laboratory case.
Posted inNews

Better Together: Perovskites Boost Silicon Solar Cell Efficiency

by Mary Caperton Morton 23 September 20217 October 2021

Scientists engineer a way to layer materials to boost efficiency without interrupting manufacturing processes.

The Sun sets at Stonehenge
Posted inNews

State-of-the-Art Technology, Serendipity, and Secrets of Stonehenge

by Richard J. Sima 8 September 202121 March 2022

The first comprehensive analysis of what the sarsen stones are made of came about with new technology—and good old-fashioned luck.

Viendo hacia afuera desde el Canion del Antílope Inferior, con el cielo cerca de la parte superior de la foto. La laminación característica de la arenisca es visible.
Posted inResearch Spotlights

La primera mirada de la meteorización a escala angstrom

by Kate Wheeling 19 August 202124 February 2022

Investigadores observan cómo el vapor de agua y el líquido alteran las rocas sedimentarias a través de procesos físicos y químicos.

Part of Canberra, Australia, where scientists have been using geochemical analysis to develop a predictive soil provenancing method.
Posted inNews

Predictive Forensics Helps Determine Where Soil Samples Came From

by Tim Hornyak 16 August 202118 November 2021

Researchers deploy geochemical analyses to narrow down the search area for a soil sample’s site of origin—an approach that could prove useful to law enforcement.

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From AGU Journals

MOST SHARED
Reviews of Geophysics
“Global and Regional Trends and Drivers of Fire Under Climate Change”
By Matthew W. Jones et al.

HIGHLY CITED
Global Biogeochemical Cycles
“Emission of trace gases and aerosols from biomass burning”
By M. O. Andreae, P. Merlet

HOT ARTICLE
Geophysical Research Letters
“Relating Slip Behavior to Off-Fault Deformation Using Physical Models”
By Emily O. Ross et al.


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