Evidence of Changes in Moisture Transport Efficiency Across the Scandes Mountains in Northern Sweden During the Holocene, Inferred from Oxygen Isotope Records of Lacustrine Carbonates

摘要

Oxygen isotope records were obtained on three different carbonate components in a 3 m thick lake sediment sequence sampled in a small hard water lake in northernmost Sweden. The sediments were continuously deposited beginning after the last deglaciation at c. 9000 ~(14)C a BP. Parallel trends in the individual records of delta~(18)O, representing lacustrine carbonates precipitated during different periods of the year, are interpreted as reflecting long term changes in delta~(18)O of regional precipitation propagated by groundwater recharging the open basin lake.