Scientists present a refined multi-method geomagnetic polarity time scale for the Late Cretaceous through the Eocene.
isotopes
Posted inNews
Reading Rainfall in a Snail’s Shell
The chemical record of a snail shell is allowing scientists to reconstruct a record of past storms from the recent—and maybe distant—past.
Posted inNews
These “Clumped” Molecules Could Offer Clues About Earth’s Climate
Researchers investigated concentrations of clumped methane isotopes to learn more about how levels of the potent greenhouse gas have changed over the industrial era.
Posted inEditors' Vox
Tracing Water’s Hidden Journey Through the Earth’s Living Skin
Water’s natural fingerprints reveal how it’s stored, mixed, and released through the Earth’s Critical Zone, potentially improving Earth System models in a rapidly warming world.
Posted inNews
Interstellar Comet Was Born in a Very Cold Place
3I/ATLAS’s chemistry suggests that it formed in a much colder environment than our solar system did.
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Earth’s Climate Records Are Melting
An ice core from the Weißseespitze Glacier collected in 2019 gave researchers a peek into the history of Earth’s wildfires, volcanic eruptions, and anthropogenic activity. In the years since, much of the glacier has disappeared.
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Primordial Impact May Explain Why the Moon Is Asymmetrical
Analysis of surface samples from the Chang’e-6 mission suggests that an asteroid may have vaporized parts of the lunar mantle, suppressing volcanic activity on the farside of the Moon.
Posted inEditors' Highlights
Calibrating the Clocks: Reconciling Groundwater Age from Two Isotopes
A new quantitative model corrects for tracer-based age biases from 39Ar and 14C isotopes leading to more accurate estimates of groundwater residence times.
Posted inResearch Spotlights
What Could Happen to the Ocean’s Carbon If AMOC Collapses
Mass glacier melting may have led this influential ocean current system to collapse at the end of the last ice age. A pair of modeling studies examines how such a collapse could affect dissolved inorganic carbon and carbon isotopes in Earth’s oceans.
Posted inScience Updates
Tracing Iron’s Invisible Transformations Just Beneath Our Feet
A new method that adds synthetic iron minerals to soils sheds light on hard-to-observe soil and sediment processes and may have a host of other applications in the Earth sciences and beyond.