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Early Holocene history of the Baltic Sea, as reflected in coastal sediments in Blekinge, southeastern Sweden

Author:
  • Björn Berglund
  • Per Sandgren
  • Lena Barnekow
  • G Hannon
  • H Jiang
  • Göran Skog
  • Shiyong Yu
Publishing year: 2005
Language: English
Pages: 111-139
Publication/Series: Quaternary International
Volume: 130
Issue: 1
Document type: Journal article
Publisher: Pergamon

Abstract english

Integrated palaeoecological studies of two fiord sediment sequences in the province of Blekinge, SE Sweden, covering the time span 11,000-5000 cal BP, reveal the timing and the environment for the Ancylus Lake/Littorina Sea transition 9800-8500 cal BP. The first ingression of saline water into the Baltic Sea through the Danish Straits occurred earlier than formerly assumed. New evidence, particularly mineral magnetic and palaeobotanical analyses, demonstrate that on the general trend of the eustatically caused Littorina transgression several minor fluctuations of the water level can be identified between 8500 and 5000 cal years BP. A distinct regression phase around 8 100 cal BP is correlated with the Greenland ice-core cold event dated to 8200 ice-core years BP. This is described as a regional climatic catastrophe for the Baltic Sea region. The coastal stratigraphy is compared with the offshore stratigraphy earlier studied. A tentative shore displacement curve for Early and Middle Holocene is presented.

Keywords

  • Geology
  • Ancylus Lake
  • Littorina Sea
  • mineral magnetism
  • pollen
  • plant macrofossils
  • diatoms
  • southern Sweden
  • shore
  • Littorina transgressions
  • displacement
  • Holocene
  • Yoldia Sea
  • climate changes
  • eustasy

Other

Published
  • ISSN: 1873-4553
Björn E Berglund
E-mail: bjorn [dot] berglund [at] geol [dot] lu [dot] se

Professor emeritus

Quaternary Sciences

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