Science ❯ Earth Sciences ❯ Geochronology

Dating Methods

Uranium-Lead Dating Isotope Dating Radioactive Decay

Pliny’s 79 CE Account Recalibrates Argon‑Argon Clock for Volcanic Dating

The study tightens the argon‑argon clock by refining the K‑40→Ar‑40 decay parameter to yield more accurate dates for eruptions and linked archaeological events.

12 ARTICLES

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First Direct Date of Dinosaur Eggshells Pins Chinese Clutch to 86 Million Years

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Canadian Greenstone Belt Rocks Dated to 4.16 Billion Years, Possibly Earth’s Oldest