Younger Dryas Maximum (1 gen 10900 anni a. C. – 1 gen 9700 anni a. C.)

Descrizione:

Northern ice reaches it's Glacial Maximum. A sharply colder period in what was a general rise in temperature after the end of the last Ice Age. The downturn is thought to have started abruptly ~10900 BC, reaching a depth of cold ~ 10500 BC, when average temperatures are thought to have been: mid-winter, -16 to -20degC [ at least 15C below modern values - a truly dramatic fall ] and high-summer, 8 to 12degC, about 4C below modern values.

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