New analyses of oxygen isotopes reveal terrestrial and lunar rocks aren’t as similar as previously thought, potentially changing the way we think the Moon formed.
geochemistry
Posted inEditors' Highlights
Modeling Transport and Charge Effects in Heterogeneous Media
Simulation of charged species reactive transport in complex physically and electrostatically heterogeneous porous media is possible with a multiple continua approach coupled to a geochemical code.
Posted inResearch Spotlights
How to Read Atmospheric History Written in Flowstones
Oxygen isotope ratios in cave deposits reflect past climates, but interpreting these data is not straightforward. A new study explores what these ratios really tell us.
Posted inEditors' Highlights
Why Is the Red Planet Red? Chlorate May Oxidize Mars’ Surface
Laboratory experiments and geochemical model suggest that chlorate is very effective to oxidize reducing iron to reddish iron oxides on Mars when liquid water was present on the surface.
Posted inNews
Dusting Off the Arid Antiquity of the Sahara
New research on the geochemistry of Canary Islands paleosols shows that the Sahara has been an arid dust producer for at least 4.8 million years.
Posted inNews
Interstellar Interloper Borisov Looks Like a Regular Comet, for Now
A first look at the chemical composition of the interstellar comet Borisov reveals ingredients that look a lot like those found in solar system comets. That’s not likely to last very long.
Posted inNews
Leaky at the Core
New evidence from deep mantle plumes suggests that Earth’s liquid outer core might be leaking tungsten isotopes into the lower mantle.
Posted inEditors' Highlights
Hiding Deep Hydrous Melts at the Core-Mantle Boundary
Silicate melts containing H2O in the lowermost mantle are surprisingly dense and may stagnate there, trapping primordial volatiles and potentially causing some of the ultra-low velocity zones.
Posted inResearch Spotlights
How Land Use Affects Nutrient Pollution in a Changing Climate
As heavy rain falls more frequently, the land alongside a river has a greater effect on the waterway’s nutrient levels—for better or worse.
Posted inEditors' Vox
Organic Gases Released and Taken Up by Soil Lack Quantification
Soils both emit and take up different biogenic volatile organic compounds, altering the chemical composition of the atmosphere and influencing local, regional, and global climate.