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Thread: Meteorite caused Younger Dryas?

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    Meteorite caused Younger Dryas?



    There have been doubters because no crater large enough was ever found. That may change.


    See:
    http://blogs.discovermagazine.com/cr...r#.XYeWuyhKhPY

    "12,800 years ago, during the Pleistocene, Earth was warming up from its last Ice Age. Temperatures slowly rose while glaciers retreated, that is, until something major happened that triggered a cold snap big enough to leave its mark on the geologic record. Over the course of just decades – the blink of an eye in geological timescales – the planet cooled somewhere between 3 and 11 degrees Fahrenheit (2 to 6 degrees Celsius). The resulting period is known as the Younger Dryas, a mysterious 1000-year blip in history.Many scientists have suggested – with evidence – that the Younger Dryas was triggered by a meteorite impact. But others have held out, suggesting that volcanic eruptions or, what seems to be the leading favorite, some sort of massive freshwater flood temporarily disrupted climate cycles based out of the North Atlantic. But the main reason scientists have been slow to accept the impact hypothesis is simple: There’s just no crater.
    But research out today in the open-access journal Science Advances suggests that maybe we haven’t looked everywhere."

    "This latest study describes the evidence used to verify that the strange circular feature is, in fact, a crater caused by an asteroid. But early age estimates show that it’s at least possible that this is the 12,800-year-old crater that so many researchers have hoped to find for decades. We’ll have to wait and see."


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    they found a crater
    and they linked it to the old worn-out youngest dryas theory
    to make sure it would get an interesting media couverage

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