Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea
A new palaeoenvironmental record of the post-glacial history of the southern Baltic Sea (~14 ka to present) is presented. During this period, large water level and salinity changes occurred in the Baltic Basin due to opening and closing of connections to the North Atlantic. Previous attempts to esta...
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Department of Geology, Lund University
2007
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Online Access: | https://lup.lub.lu.se/record/548242 https://portal.research.lu.se/files/4878320/3163568.pdf |
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ftulundlup:oai:lup.lub.lu.se:305edcd3-a017-4faa-9e8a-f5f3e6b8396c 2023-05-15T17:32:56+02:00 Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea Kortekaas, Marloes 2007 application/pdf https://lup.lub.lu.se/record/548242 https://portal.research.lu.se/files/4878320/3163568.pdf eng eng Department of Geology, Lund University https://lup.lub.lu.se/record/548242 urn:isbn:978-91-86746-84-1 https://portal.research.lu.se/files/4878320/3163568.pdf info:eu-repo/semantics/openAccess Lundqua thesis; (57) (2007) ISSN: 0281-3033 Geology kartografi klimatologi Geofysik fysisk oceanografi physical oceanography meteorology Sedimentologi Stratigrafi Stratigraphy Baltic Sea geokemi Petrologi mineralogi geochemistry mineralogy Petrology greigite mineral magnetics sea-level changes Holocene Littorina transgression geomorphology pedology cartography climatology meteorologi Geophysics Sedimentology Optically Stimulated Luminescence (OSL) Fysisk geografi geomorfologi marklära Physical geography thesis/doccomp info:eu-repo/semantics/doctoralThesis text 2007 ftulundlup 2023-02-01T23:27:47Z A new palaeoenvironmental record of the post-glacial history of the southern Baltic Sea (~14 ka to present) is presented. During this period, large water level and salinity changes occurred in the Baltic Basin due to opening and closing of connections to the North Atlantic. Previous attempts to establish a detailed chronology for these palaeoenvironmental changes have been conducted mainly in coastal settings, where organic material for 14C dating is abundant. Many of these records are, however, discontinuous due to large water level fluctuations. In the relatively deep water of the Arkona Basin (45 m deep) in the southern Baltic Sea the sediment record is expected to be more or less continuous, but lack of organic material for 14C dating has impeded previous studies. Here, palaeoenvironmental change in the Arkona Basin is reconstructed on the basis of geochemical, sedimentological, mineral magnetic and palaeontological investigations. Additionally, independent physically based chronological control is, for the first time, obtained using Optically Stimulated Luminescence (OSL) dating on fine quartz sand from a ~10.86 m long sediment core. Tests of luminescence characteristics confirmed the suitability of the material for OSL dating and the ages agree well with the available AMS 14C ages on shells; in contrast, bulk sediment 14C ages are generally ~1000 years too old. Stratigraphic marker horizons in this deep basin are now absolutely dated, allowing comparison and testing of existing models of post-glacial Baltic Sea regional development. Glacial varved clay was deposited during the Baltic Ice Lake stage and a sand layer representing the Baltic Ice Lake drainage to the North Atlantic is dated to ~11.6 ka. This event is followed by a period of low water level and enhanced influence from the Oder River. A period of very rapid sedimentation occurs between ~10.9 and ~10.4 ka and is attributed to the Ancylus Lake transgression. A first anomalous slightly brackish water inflow is recorded at ~9.8 ka, but there is no ... Doctoral or Postdoctoral Thesis North Atlantic Lund University Publications (LUP) |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology kartografi klimatologi Geofysik fysisk oceanografi physical oceanography meteorology Sedimentologi Stratigrafi Stratigraphy Baltic Sea geokemi Petrologi mineralogi geochemistry mineralogy Petrology greigite mineral magnetics sea-level changes Holocene Littorina transgression geomorphology pedology cartography climatology meteorologi Geophysics Sedimentology Optically Stimulated Luminescence (OSL) Fysisk geografi geomorfologi marklära Physical geography |
spellingShingle |
Geology kartografi klimatologi Geofysik fysisk oceanografi physical oceanography meteorology Sedimentologi Stratigrafi Stratigraphy Baltic Sea geokemi Petrologi mineralogi geochemistry mineralogy Petrology greigite mineral magnetics sea-level changes Holocene Littorina transgression geomorphology pedology cartography climatology meteorologi Geophysics Sedimentology Optically Stimulated Luminescence (OSL) Fysisk geografi geomorfologi marklära Physical geography Kortekaas, Marloes Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
topic_facet |
Geology kartografi klimatologi Geofysik fysisk oceanografi physical oceanography meteorology Sedimentologi Stratigrafi Stratigraphy Baltic Sea geokemi Petrologi mineralogi geochemistry mineralogy Petrology greigite mineral magnetics sea-level changes Holocene Littorina transgression geomorphology pedology cartography climatology meteorologi Geophysics Sedimentology Optically Stimulated Luminescence (OSL) Fysisk geografi geomorfologi marklära Physical geography |
description |
A new palaeoenvironmental record of the post-glacial history of the southern Baltic Sea (~14 ka to present) is presented. During this period, large water level and salinity changes occurred in the Baltic Basin due to opening and closing of connections to the North Atlantic. Previous attempts to establish a detailed chronology for these palaeoenvironmental changes have been conducted mainly in coastal settings, where organic material for 14C dating is abundant. Many of these records are, however, discontinuous due to large water level fluctuations. In the relatively deep water of the Arkona Basin (45 m deep) in the southern Baltic Sea the sediment record is expected to be more or less continuous, but lack of organic material for 14C dating has impeded previous studies. Here, palaeoenvironmental change in the Arkona Basin is reconstructed on the basis of geochemical, sedimentological, mineral magnetic and palaeontological investigations. Additionally, independent physically based chronological control is, for the first time, obtained using Optically Stimulated Luminescence (OSL) dating on fine quartz sand from a ~10.86 m long sediment core. Tests of luminescence characteristics confirmed the suitability of the material for OSL dating and the ages agree well with the available AMS 14C ages on shells; in contrast, bulk sediment 14C ages are generally ~1000 years too old. Stratigraphic marker horizons in this deep basin are now absolutely dated, allowing comparison and testing of existing models of post-glacial Baltic Sea regional development. Glacial varved clay was deposited during the Baltic Ice Lake stage and a sand layer representing the Baltic Ice Lake drainage to the North Atlantic is dated to ~11.6 ka. This event is followed by a period of low water level and enhanced influence from the Oder River. A period of very rapid sedimentation occurs between ~10.9 and ~10.4 ka and is attributed to the Ancylus Lake transgression. A first anomalous slightly brackish water inflow is recorded at ~9.8 ka, but there is no ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Kortekaas, Marloes |
author_facet |
Kortekaas, Marloes |
author_sort |
Kortekaas, Marloes |
title |
Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
title_short |
Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
title_full |
Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
title_fullStr |
Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
title_full_unstemmed |
Post-Glacial History of Sea-Level and Environmental Change in the Southern Baltic Sea |
title_sort |
post-glacial history of sea-level and environmental change in the southern baltic sea |
publisher |
Department of Geology, Lund University |
publishDate |
2007 |
url |
https://lup.lub.lu.se/record/548242 https://portal.research.lu.se/files/4878320/3163568.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Lundqua thesis; (57) (2007) ISSN: 0281-3033 |
op_relation |
https://lup.lub.lu.se/record/548242 urn:isbn:978-91-86746-84-1 https://portal.research.lu.se/files/4878320/3163568.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766131271626391552 |