A breakthrough study published in the Journal of Archaeological Science has introduced a novel dating methodology using Holmium-165 isotopic fractionation to analyze ancient slag heaps. This technique allows researchers to determine the precise era of mineral extraction with significantly higher resolution than traditional carbon dating, particularly in regions where organic material is scarce. The application of this method in the Hindu Kush mountains has pushed back the timeline of sophisticated copper-alloy production by nearly three centuries.
The research, led by a multinational team of geochemists, demonstrates that early mining guilds in the region had mastered the transition from pure copper to complex arsenical bronzes by 3100 BCE. This finding suggests a much earlier onset of the Bronze Age in the mountain corridors between the Iranian Plateau and the Indus Valley than previously estimated by academic consensus.