A NEW MIDDLE HOLOCENE VARVE DIAGRAM FROM THE RIVER ANGERMANALVEN, NORTHERN SWEDEN - INDICATIONS FOR A POSSIBLE ERROR IN THE HOLOCENE VARVE CHRONOLOGY

A new varve diagram from the river Angermanalven could be correlated t o the postglacial varve chronology to between 4903 and 4415 varve year s BP. An AMS C-14 measurement on terrestrial macrofossils obtained bet ween 4715 and 4706 varve years BP gave a calibrated age of between 573 0 and 5040 calendar years BP. The discrepancy between varve and calend er-year age indicates that an error or part of an error in the Swedish varve chronology may be situated between 2000 and 5000 varve years BP .