noun
Geologythe Allerød
The second climatic stage of the late-glacial period in northern Europe, between the two Dryas stages (about 12,000 to 10,800 years ago). It was an interlude of warmer weather marked by the spread of birch.
Origin
Early 20th century the name of a place near Copenhagen in Denmark where materials regarded as defining the characteristics of the Allerød period were found.
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