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Varved sediments in Sweden: a brief review

Abstract This paper gives an introduction to studies made on varved (annually laminated) sediments in Sweden. Varve studies began in the late 19th century when Gerard de Geer correlated glacial clay-varves in order to establish a geochronology over the latest deglaciation. Both the chronology and its connection to present sediment deposition has continuously been revised during this century. As well as for glacial clay-varve deposits, annual formation of sediment laminae has also been found in estuarine, marine and lacustrine environments. Varved sediments, of different origins, first mainly used for dating purposes, have today also become an important tool for detailed reconstructions of past environmental changes.