Allerød

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Allerød A period during the last glacial that marks a prolonged warmer oscillation or interstadial during the general phase of ice retreat in north-western Europe. Radiocarbon dating suggests it lasted from about 12000bp to 10800bp. Pollen records for the north-west European area indicate a cool temperate flora with birch (Betula species) widespread, in marked contrast to the preceding and following, colder, Dryas phases. In Britain the Allerød is not usually distinguished from the Bølling.

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