Radioactive Clocks in Arctic Ice Reveal Hidden Water Flow Inside Permafrost
Radium and thorium isotope measurements from Svalbard permafrost cores show that some ground ice is thousands of years old while ...
Tag: geochronology
Sunlight’s Slow Reset: Single Feldspar Grains Reveal Hidden Limits of River Sediment Dating
Single-grain measurements of potassium feldspars from Chilean rivers show that residual luminescence doses scale with natural dose rather than grain ...
Greece’s Forgotten Volcano Is Four Million Years Older Than Anyone Thought
New argon-argon dating shows Greece's Christiana volcano erupted around 2.6 million years ago, millions of years earlier than assumed, revealing ...
Tiny Mineral Clocks Rewritten by Heat Reveal No Universal Closure Temperature
Laser-based microanalysis of biotite in the contact aureole of Labrador's Makhavinekh Lake Pluton shows that rubidium–strontium ages depend on grain-scale ...
Scotland’s Ancient Boulders Put a Famous Dating Clock to the Test
New beryllium-10 measurements from glacial boulders in north-west Scotland show that the Rannoch Moor production rate gives the most accurate ...
Hidden Clocks in Crystal Tracks: New Method Pulls Multiple Ages From a Single Mineral
A new deconvolution method extracts multiple discrete ages from a single apatite fission-track length histogram, sharpening the reconstruction of burial, ...
Custom-Built Helium Machine Pushes Rock Dating to Attomole Sensitivity
Scientists at the University of Colorado Boulder have built and calibrated a custom low-volume helium analysis line, the Jimbochron, that ...
Hidden Uncertainty in Zircon Clocks Clouds the Story of Earth’s Great Unconformity
A new analysis shows that uncertainties in helium diffusion parameters in zircon can shift predicted thermochronologic ages by hundreds of ...
New dating strategy untangles ancient burial heat from mountain cooling in old sand grains
Researchers at the University of Calgary have developed a new modeling strategy that uses syn-depositional zircon grains and combined U/Pb ...
Twin Cores in the Cradle of Humankind: How Chew Bahir Drilling Rewrote the Rules of Climate Archiving
A 15-year scientific drilling campaign in Ethiopia's Chew Bahir basin produced twin sediment cores spanning 620,000 years of climate history, ...
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Mothers who receive childcare support from maternal grandparents show more parental warmth, finds NTU Singapore study
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University of Seville Breaks 120-Year-Old Mystery, Revises a Key Einstein Concept
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Bee body mass, pathogens and local climate influence heat tolerance
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Researchers record first-ever images and data of a shark experiencing a boat strike
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Groundbreaking Clinical Trial Reveals Lubiprostone Enhances Kidney Function
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