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30-Jul-2015 21:41

The trees were alive about 11,200 to 12,400 years ago, at the end of the Younger Dryas event and into the early Holocene era, Griggs said.

by Emily Benson Scientists use radiocarbon dating to determine the age of everything from bone and teeth to seeds and straw.

The accuracy and precision of those dates depends on careful calibration.

radiocarbon dating blogroll trackback closed-24

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New data from logs unearthed in a small floodplain in New York’s Lake Ontario lowlands will allow scientists to refine the calibrations for a 1,200 year period that occurred about 12,000 years ago, according to Carol Griggs, a dendrochronologist at Cornell University in Ithaca, New York.

The record represents “a new independent radiocarbon series for this time period,” Griggs said at the 2015 American Geophysical Union Fall Meeting in San Francisco.

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