News From the Field
6 North American Sites Hold 12,900-year-old Nanodiamond-rich Soil
January 1, 2009
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.
University of Oregon
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