Open AccessDeglaciation chronology and marine environments in southwestern Sweden
Author(s) -
WASTEGARD STEFAN
Publication year - 1998
Publication title -
boreas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.95
H-Index - 74
eISSN - 1502-3885
pISSN - 0300-9483
DOI - 10.1111/j.1502-3885.1998.tb00877.x
Subject(s) - deglaciation , geology , meltwater , oceanography , preboreal , arctic , moraine , pleistocene , holocene , physical geography , paleontology , younger dryas , fauna , chronology , glacial period , geography , ecology , biology
Four sites in northwestern Dalsland and southwestern VHrmland, southwestern Sweden were investigated. including studies of marine biostratigraphy and AMS datings. A marine foraminifera and mollusc fauna existed in the area between c . 10 400 and 9700 14 C years BP. Arctic assemblages dominate the lowermost layers, deposited immediately after the deglaciation. A transition to more diverse faunas affected by a higher meltwater influence and decreasing water depths is recorded higher up in the succession. Northwestern Dalsland was dcglaciated between c . 10 400 and 10 200 BP, and southwestern Viirmland between c . 10 100 and 9800 BP. A stagnation in the retreat of the ice margin is suggested at 10 300 to 10 200 BP. The subsequent rapid ice recession was probably an effect of warmer conditions at the Pleistocene‐Holocene climatic transition. A similar shift in the early Preboreal (c. 9900 BP) probably represents the dcglaciation which followed after the stagnation at the Ski moraines. Renewed glacial activity is indicated at c . 9700 BP.