Allerød

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Allerød A late glacial (i.e. late Devensian) period marking a prolonged warmer oscillation or interstadial during the general phase of ice retreat in northwestern Europe. Radiocarbon dating suggests it lasted from about 12 000 years BP to 10800 years BP. Pollen records (pollen zone) for the north-western European area indicate a cool temperate flora with birch (Betula species) widespread, in marked contrast to the preceding and following, colder, Dryas, phases.

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