Archaeology

Lead (geology)

Physical geography

Geology

Paleontology

Phoenician

Geography

Peninsula

Ancient history

Roman Empire

Bullion

History

Proceedings of the National Academy of Sciences

Significance An 1100 BCE to 800 CE record of estimated lead emissions based on continuous, subannually resolved, and precisely dated measurements of lead pollution in deep Greenland ice and atmospheric modeling shows that European emissions closely varied with historical events, including imperial expansion, wars, and major plagues. Emissions rose coeval with Phoenician expansion and accelerated during expanded Carthaginian and Roman lead–silver mining primarily in the Iberian Peninsula. Emissions fluctuated synchronously with wars and political instability, particularly during the Roman Republic, reaching a sustained maximum during the Roman Empire before plunging in the second century coincident with the Antonine plague, and remaining low for &gt;500 years. Bullion in silver coinage declined in parallel, reflecting the importance of lead–silver mining in ancient economies.

Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity