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Greenland
NASA Image
Younger Dryas Occurred Abruptly
December 1, 2009 | European Science Foundation

Isotopes in a mud core from Lough Monreach, Ireland, show that the Younger Dryas may have occurred very abruptly. When glacial Lake Agassiz flowed into the North Atlantic Ocean almost 13,000 years ago, the “Big Freeze” set in at once, possibly chilling the ocean within mere months. Could a rapid melting of the Greenland ice sheet in current times could produce a similar effect?


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