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Southern Baltic sea-level oscillations; new radiocarbon, pollen and diatom proof of the Puck Lagoon (Poland)

Szymon Uscinowicz, Joanna Zachowicz, Grazyna Miotk-Szpiganowicz and Andrzej Witkowski
Southern Baltic sea-level oscillations; new radiocarbon, pollen and diatom proof of the Puck Lagoon (Poland) (in Coastline changes; interrelation of climate and geological processes, Jan Harff (editor), William Hay (editor) and Daniel M. Tetzlaff (editor))
Special Paper - Geological Society of America (2007) 426: 143-158

Abstract

The Baltic sea-level oscillations in the Atlantic and Subboreal periods are known from sedimentary records on slightly uplifting coasts in Denmark and southern Sweden (e.g., Berglund, 1971; Digerfeldt, 1975). The periodicity of those oscillations is in close correlation with recent data on climatic cycles with a periodicity of 1500,1000, and 550 yr (e.g., Stuiver et al., 1995; Chapman and Shackleton, 2000). The effects of regional eustatic oscillations in the coastal area of the Southern Baltic are poorly known because of the slightly subsiding coast and the magnitude of barographic and storm surges, which are larger than those of eustatic oscillations. To solve these problems, sediment sequences on the western coasts of the Puck Lagoon (northwestern part of the Gulf of Gdansk) were investigated. Recent vertical movements of Earth's crust are approximately 0.0 to -0.5 mm/yr. According to (super 14) C datings, pollen and diatom analyses, the earliest marine influences occurred in the Middle Atlantic period, while at the end of the Atlantic period almost all of the area was occupied by brackish waters (Kramarska et al., 1995; Uscinowicz and Miotk-Szpiganowicz, 2003). Several sediment cores were taken along the western coast of the Puck Lagoon. Ordinates of the collected cores were geodetically determined to + or -1 cm relative to the mean sea level. Peat, plant remains, and marine shells (64 samples) were dated using the classic (super 14) C and AMS (accelerator mass spectrometry) methods. The plot showing the altitude of peat and marine mollusk shells versus their radiocarbon age shows that during the Subboreal and Subatlantic periods water levels in the Puck Lagoon were as follows: 5 ka B.P.--2.8 m, 4 ka B.P.--1.8-1.9 m, 3 ka B.P.--1.3-1.4 m, 2 ka B.P.--0.8-0.9 m, and 1 ka B.P.--0.4-0.5 m b.s.I. The rises in sea level during the Subboreal and Subatlantic periods may have been cyclical and related to climatic oscillations. The periodicity of water-level changes was ca. 1000 yr and their amplitude was approximately 0.3-0.5 m. This is also confirmed by pollen and diatom analyses.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 426
Title: Southern Baltic sea-level oscillations; new radiocarbon, pollen and diatom proof of the Puck Lagoon (Poland)
Title: Coastline changes; interrelation of climate and geological processes
Author(s): Uscinowicz, SzymonZachowicz, JoannaMiotk-Szpiganowicz, GrazynaWitkowski, Andrzej
Author(s): Harff, Janeditor
Author(s): Hay, Williameditor
Author(s): Tetzlaff, Daniel M.editor
Affiliation: Polish Geological Institute, Branch of Marine Geology, Gdansk, Poland
Affiliation: Baltic Sea Research Institute, Rostock, Federal Republic of Germany
Pages: 143-158
Published: 2007
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 978-0-8137-2426-3
Meeting name: 32nd international geological congress
Meeting location: Florence, ITA, Italy
Meeting date: 20040820Aug. 20-28, 2004
References: 39
Accession Number: 2008-044808
Categories: Quaternary geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., 1 table, sketch map
N54°30'00" - N54°30'00", E18°30'00" - E18°30'00"
Secondary Affiliation: Schlumberger Information Solutions, USA, United StatesUniversity of Szczecin, POL, Poland
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200813
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