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Innovative 'Argon-Argon' Step-Heating Methodology Refines the Chronology of the Thera Eruption to Sub-Decadal Precision

📅 April 10, 2026 📰 Scientific Reports
Innovative 'Argon-Argon' Step-Heating Methodology Refines the Chronology of the Thera Eruption to Sub-Decadal Precision

A collaborative research team from the Global Archaeological Dating Initiative has announced a refined chronology for the Minoan eruption of Thera (Santorini) using a new Argon-Argon (40Ar/39Ar) step-heating technique. This methodology, published in Scientific Reports, allows for the precise measurement of isotopic ratios in volcanic glass shards found within archaeological strata across the Eastern Mediterranean.

The findings place the catastrophic eruption within a narrow three-year window, effectively ending a long-standing debate between radiocarbon dating and tree-ring data. This high-precision dating enables historians to sync Egyptian and Minoan chronologies with unprecedented accuracy, revealing the immediate impact of the climate-altering event on Bronze Age trade networks and political stability in the Levant.

Original source: Scientific Reports