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correlation of varves

强调
Gruzovik, 地质学 коннексия (a varve is sedimentary bed, layer, or sequence of layers deposited in a body of still water within a year's time, and usually during a season, by the melting of glaciers and is used in determining the age of geological formations and in archaeological dating, especially in northern Europe)
地质学 коннекс (a varve is sedimentary bed, layer, or sequence of layers deposited in a body of still water within a year's time, and usually during a season, by the melting of glaciers and is used in determining the age of geological formations and in archaeological dating, especially in northern Europe)