New study uses Pompeii eruption date to improve volcanic dating precision
Scientists from Berkeley and Padua report that calibrating argon-argon dating with the August 24, 79 CE eruption of Mount Vesuvius significantly improves volcanic dating accuracy.
Calibration improves dating methods
Researchers combined historical records from Pliny the Younger with modern argon-argon techniques to refine their measurements. This approach allows scientists to date geologic events within decades rather than broader timeframes. The method now serves as a benchmark for other dating technologies like carbon-14 and uranium-lead analysis.
Global volcanic risk assessment
Geologists can apply these precise dates to eruptions threatening cities such as Mexico City and Naples. Archaeologists will also benefit from attaching more accurate timelines to past events in the region. The improved precision helps ground-truth other methods used on billion-year-old rocks.
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