12,900-year-old Nanodiamond-rich Soil


Six North American Sites Hold 12,900-year-old Nanodiamond-rich Soil

Abundant tiny particles of diamond dust exist in sediments dating to 12,900 years ago at six North American sites, adding strong evidence for Earth’s impact with a rare swarm of carbon-and-water-rich comets or carbonaceous chondrites, reports a nine-member scientific team.

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