science1 publisher
Argon-argon dating of Vesuvius sanidine lands eight years from Pliny's eruption date
Berkeley and Padua geochronologists dated eight crystals from Vesuvius to 1,938 years, plus or minus 13, against a recorded age of 1,946 years. The same eruption date let them measure potassium-40's decay twice as precisely. Carbon-14 and uranium-lead results can now be checked against that constant.
Publishers:phys.org
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