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