New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems
A comprehensive palaeogeographic reconstruction of ice sheets and related proglacial lake systems for the older Saalian glaciation in northern central Europe is presented, which is based on the integration of palaeo-ice flow data, till provenance, facies analysis, geomorphology and new luminescence...
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Amsterdam : Elsevier
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ftunivhannover:oai:www.repo.uni-hannover.de:123456789/2626 2023-07-16T03:58:22+02:00 New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems Lang, Jörg Lauer, Tobias Winsemann, Jutta 2018 http://www.repo.uni-hannover.de/handle/123456789/2626 https://doi.org/10.15488/2600 eng eng Amsterdam : Elsevier DOI:https://doi.org/10.1016/j.quascirev.2017.11.029 ISSN:02773791 http://dx.doi.org/10.15488/2600 http://www.repo.uni-hannover.de/handle/123456789/2626 CC BY-NC-ND 4.0 Unported https://creativecommons.org/licenses/by-nc-nd/4.0/ frei zugänglich Quaternary Science Reviews 180 (2018) Ice-dammed lake Lake-outburst flood Luminescence dating Middle Pleistocene Saalian glaciation Deposits Geochronology Glacial geology Glaciers Lakes Luminescence Outburst floods Ice bedrock deglaciation flood geomorphology ice flow ice margin ice sheet ice stream paleoceanography proglacial environment reconstruction Saalian Atlantic Ocean Europe Fennoscandia Lower Rhine Embayment North Sea Sweden ddc:550 ddc:551 status-type:publishedVersion doc-type:Article doc-type:Text 2018 ftunivhannover https://doi.org/10.15488/260010.1016/j.quascirev.2017.11.029 2023-06-28T10:36:26Z A comprehensive palaeogeographic reconstruction of ice sheets and related proglacial lake systems for the older Saalian glaciation in northern central Europe is presented, which is based on the integration of palaeo-ice flow data, till provenance, facies analysis, geomorphology and new luminescence ages of ice-marginal deposits. Three major ice advances with different ice-advance directions and source areas are indicated by palaeo-ice flow directions and till provenance. The first ice advance was characterised by a southwards directed ice flow and a dominance of clasts derived from southern Sweden. The second ice advance was initially characterised by an ice flow towards the southwest. Clasts are mainly derived from southern and central Sweden. The latest stage in the study area (third ice advance) was characterised by ice streaming (Hondsrug ice stream) in the west and a re-advance in the east. Clasts of this stage are mainly derived from eastern Fennoscandia. Numerical ages for the first ice advance are sparse, but may indicate a correlation with MIS 8 or early MIS 6. New pIRIR290 luminescence ages of ice-marginal deposits attributed to the second ice advance range from 175 ± 10 to 156 ± 24 ka and correlate with MIS 6. The ice sheets repeatedly blocked the main river-drainage pathways and led to the formation of extensive ice-dammed lakes. The formation of proglacial lakes was mainly controlled by ice-damming of river valleys and major bedrock spillways; therefore the lake levels and extends were very similar throughout the repeated ice advances. During deglaciation the lakes commonly increased in size and eventually drained successively towards the west and northwest into the Lower Rhine Embayment and the North Sea. Catastrophic lake-drainage events occurred when large overspill channels were suddenly opened. Ice-streaming at the end of the older Saalian glaciation was probably triggered by major lake-drainage events. Article in Journal/Newspaper Fennoscandia Ice Sheet Institutional Repository of Leibniz Universität Hannover Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) |
institution |
Open Polar |
collection |
Institutional Repository of Leibniz Universität Hannover |
op_collection_id |
ftunivhannover |
language |
English |
topic |
Ice-dammed lake Lake-outburst flood Luminescence dating Middle Pleistocene Saalian glaciation Deposits Geochronology Glacial geology Glaciers Lakes Luminescence Outburst floods Ice bedrock deglaciation flood geomorphology ice flow ice margin ice sheet ice stream paleoceanography proglacial environment reconstruction Saalian Atlantic Ocean Europe Fennoscandia Lower Rhine Embayment North Sea Sweden ddc:550 ddc:551 |
spellingShingle |
Ice-dammed lake Lake-outburst flood Luminescence dating Middle Pleistocene Saalian glaciation Deposits Geochronology Glacial geology Glaciers Lakes Luminescence Outburst floods Ice bedrock deglaciation flood geomorphology ice flow ice margin ice sheet ice stream paleoceanography proglacial environment reconstruction Saalian Atlantic Ocean Europe Fennoscandia Lower Rhine Embayment North Sea Sweden ddc:550 ddc:551 Lang, Jörg Lauer, Tobias Winsemann, Jutta New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
topic_facet |
Ice-dammed lake Lake-outburst flood Luminescence dating Middle Pleistocene Saalian glaciation Deposits Geochronology Glacial geology Glaciers Lakes Luminescence Outburst floods Ice bedrock deglaciation flood geomorphology ice flow ice margin ice sheet ice stream paleoceanography proglacial environment reconstruction Saalian Atlantic Ocean Europe Fennoscandia Lower Rhine Embayment North Sea Sweden ddc:550 ddc:551 |
description |
A comprehensive palaeogeographic reconstruction of ice sheets and related proglacial lake systems for the older Saalian glaciation in northern central Europe is presented, which is based on the integration of palaeo-ice flow data, till provenance, facies analysis, geomorphology and new luminescence ages of ice-marginal deposits. Three major ice advances with different ice-advance directions and source areas are indicated by palaeo-ice flow directions and till provenance. The first ice advance was characterised by a southwards directed ice flow and a dominance of clasts derived from southern Sweden. The second ice advance was initially characterised by an ice flow towards the southwest. Clasts are mainly derived from southern and central Sweden. The latest stage in the study area (third ice advance) was characterised by ice streaming (Hondsrug ice stream) in the west and a re-advance in the east. Clasts of this stage are mainly derived from eastern Fennoscandia. Numerical ages for the first ice advance are sparse, but may indicate a correlation with MIS 8 or early MIS 6. New pIRIR290 luminescence ages of ice-marginal deposits attributed to the second ice advance range from 175 ± 10 to 156 ± 24 ka and correlate with MIS 6. The ice sheets repeatedly blocked the main river-drainage pathways and led to the formation of extensive ice-dammed lakes. The formation of proglacial lakes was mainly controlled by ice-damming of river valleys and major bedrock spillways; therefore the lake levels and extends were very similar throughout the repeated ice advances. During deglaciation the lakes commonly increased in size and eventually drained successively towards the west and northwest into the Lower Rhine Embayment and the North Sea. Catastrophic lake-drainage events occurred when large overspill channels were suddenly opened. Ice-streaming at the end of the older Saalian glaciation was probably triggered by major lake-drainage events. |
format |
Article in Journal/Newspaper |
author |
Lang, Jörg Lauer, Tobias Winsemann, Jutta |
author_facet |
Lang, Jörg Lauer, Tobias Winsemann, Jutta |
author_sort |
Lang, Jörg |
title |
New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
title_short |
New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
title_full |
New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
title_fullStr |
New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
title_full_unstemmed |
New age constraints for the Saalian glaciation in northern central Europe: Implications for the extent of ice sheets and related proglacial lake systems |
title_sort |
new age constraints for the saalian glaciation in northern central europe: implications for the extent of ice sheets and related proglacial lake systems |
publisher |
Amsterdam : Elsevier |
publishDate |
2018 |
url |
http://www.repo.uni-hannover.de/handle/123456789/2626 https://doi.org/10.15488/2600 |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) |
geographic |
Dammed Lake |
geographic_facet |
Dammed Lake |
genre |
Fennoscandia Ice Sheet |
genre_facet |
Fennoscandia Ice Sheet |
op_source |
Quaternary Science Reviews 180 (2018) |
op_relation |
DOI:https://doi.org/10.1016/j.quascirev.2017.11.029 ISSN:02773791 http://dx.doi.org/10.15488/2600 http://www.repo.uni-hannover.de/handle/123456789/2626 |
op_rights |
CC BY-NC-ND 4.0 Unported https://creativecommons.org/licenses/by-nc-nd/4.0/ frei zugänglich |
op_doi |
https://doi.org/10.15488/260010.1016/j.quascirev.2017.11.029 |
_version_ |
1771545440407257088 |