A new book explores chemostratigraphy, a fascinating and relatively young branch of geoscience, presenting the latest developments and applications.
Geochemistry
Posted inResearch Spotlights
Researchers Bring Early Martian Water Chemistry to Life
Lab experiments constrain conditions necessary for a key mineral to have formed in ancient lagoons and a crater lake.
Posted inResearch Spotlights
A Novel Approach Reveals Element Cycles in the Ocean
Dissolved thorium isotopes light the way to a more thorough understanding of how different elements enter marine environments—and how long they stay there.
Posted inGeoFIZZ
A Rock Guide to Fireworks
Before a firework was red, it was a strontium salt waiting for its moment.
Posted inEditors' Vox
Multiple Choices Exist for Changing Ocean Oxygen Concentrations
Widespread declines in ocean oxygen concentrations are now being reported with authors offering quite different explanations. Which ones are correct?
Posted inResearch Spotlights
Life in the Hyporheic Zone
Defining the chemical relationships between water, sediment, and organisms that thrive beneath riverbeds.
Posted inEditors' Vox
Radiocarbon in the Oceans
Offsets in radiocarbon concentration within the ocean or between the ocean and the atmosphere are particularly useful proxies for a variety of studies.
Posted inNews
Diamond Impurities Reveal Water Deep Within the Mantle
A high-pressure form of ice, trapped within diamonds forged in the lower mantle, suggests that aqueous fluids reside deeper in Earth than we knew.
Posted inResearch Spotlights
History of Water on Mars’s Surface Is Longer Than We Thought
Curiosity’s two-step heating experiment of mudstone at Gale crater reveals minerals that formed in the presence of water less than 3 billion years ago.
Posted inResearch Spotlights
Is the Lower Crust Convecting Beneath Mid-Ocean Ridges?
The first attempt to couple models of hydrothermal circulation and magmatic convection along fast-spreading ridges may explain the spacing of hydrothermal vent fields along the East Pacific Rise.