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9 Ocak 2017 Pazartesi

WHAT IS THE DRYAS ?

A series of cold climatic phases in northwestern Europe, during a time when the North Atlantic was in almost full glacial condition. Dryas I was c. 16,000–14,000 bp, Dryas II (Older Dryas) was c. 12,300– 11,800 bp, and Dryas III (Younger Dryas) was c. 11,000–10,000 bp. It is named after a tundra plant. The increasing temperature after the late Dryas period during the Pre-Boreal and the Boreal (c. 8000– 5500 bc, according to radiocarbon dating) caused a remarkable change in late glacial flora and fauna.

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