The Local Last Glacial Maximum of the southern Scandinavian Ice Sheet front: Cosmogenic nuclide dating of erratics in northern Poland

Tylmann, Karol; Rinterknecht, Vincent; Woźniak, Piotr Paweł; Bourlès, Didier; Schimmelpfennig, Irene; Guillou, Valéry; Team, Aster

doi:10.1016/j.quascirev.2019.07.004

Cited by 46 publications

(29 citation statements)

References 59 publications

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“…The concentration of ice stream activity in the Lower Odra region modelled during the local LGM (Patton et al 2016) suggests that several ice streams in western Poland must have operated simultaneously and for multi-millennia to discharge such a large ice flux. This is consistent with the Tylmann et al (2019) geochronology, which indicates that the local LGM period was between 25 and 21 ka BP after which deglaciation started at 20.7 ka BP.…”

Section: Switches In Ice-flow Behaviour and A New Deglaciation Frameworksupporting

confidence: 90%

“…Traditional reconstructions of Late Weichselian glaciation in central Europe are based on three main stillstand positions (Fig. 1): Leszno/Brandenburg (LGM, 25-21 ka), Pozna n/Frankfurt (17 ka) and Pomeranian (16 ka; Kozarski 1995;L€ uthgens & B€ ose 2012;Marks 2012;Tylmann et al 2019). Typically, these stillstands, marked by prominent moraine systems, are used as a framework for describing SIS activity along its southern sector.…”

Section: The Scandinavian Ice Sheet's Southernmost Sectormentioning

confidence: 99%

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Dynamics of the last Scandinavian Ice Sheet’s southernmost sector revealed by the pattern of ice streams

Szuman

Kalita

Ewertowski

et al. 2021

Boreas

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The Polish sectorof the last Scandinavian Ice Sheet is a key area for studying ice-sheet drainage and decay from its local Last Glacial Maximum (LGM) extent, as it is located at the terrestrial terminus of the large and dynamic Baltic Ice Stream Complex. Geomorphological mapping, based on a 0.4-m LiDAR digital elevation model, revealed about 940 streamlined bedforms, many of which are shown for the first time and consisting of mega-scale glacial lineations and drumlins. The lineation flowsets together with associated landforms were used to identify 17 ice streams, occupying 80% of the study area. We demonstrated that subtle topographic variations played an important role in influencing the ice-sheet dynamics. Variations in ice dynamicswere a response to external climatic forcing that controlled deglaciation at the ice-sheet scale as well as to internal reorganization due to the influence of topography, subglacial hydrology and glacier thermal regime. During the local LGM, the southern sector of the Scandinavian Ice Sheet in Poland was dominated by four simultaneously operating ice streams, likely active for several millennia, followed by fast active recession interrupted by three main periods of ice stream stagnation. Increased ice-flow dynamics during the period of the Young Baltic advances are suggested to be caused by variations in subglacial hydrology and the polythermal structure of the ice sheet.

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Section: Switches In Ice-flow Behaviour and A New Deglaciation Frameworksupporting

confidence: 90%

Section: The Scandinavian Ice Sheet's Southernmost Sectormentioning

confidence: 99%

Dynamics of the last Scandinavian Ice Sheet’s southernmost sector revealed by the pattern of ice streams

Szuman

Kalita

Ewertowski

et al. 2021

Boreas

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“…2). Dur ing the Late Weichselian (MIS 2) the ice-sheet mar gin, lo cated to the north of the val ley, started to melt not later than 21.8 ±1.8 ka, as sug gested by the 10 Be sur face ex po sure age of an er ratic rest ing on the Weichselian mo raine pla teau (Tylmann et al, 2019; for the po si tion of the boul der see Figs. 2 and 5).…”

Section: Regional Settingmentioning

confidence: 91%

“…Dur ing in ves ti ga tion of the tim ing and ex tent of the Scan dina vian Ice Sheet in Po land dur ing the Last Gla cial Max i mum (LGM;Tylmann et al, 2019) a new site of Late Pleis to cene fluvial de pos its was found near the LGM ice-sheet limit in central-west ern Po land (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Fluvial response to environmental conditions during MIS 4-3: a sedimentary record at the Brześnica site, central-western Poland

Moskalewicz

Tylmann

Woźniak

et al. 2020

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“…2521 kyr) in western Poland and during the Poznań Phase (ca. 22-18 kyr) in eastern Poland (Wysota et al 2009;Marks 2012;Tylmann et al 2019). After this time, the last SIS started to retreat progressively releasing fresh glacial landforms.…”

Section: Introductionmentioning

confidence: 99%

Geoheritage of Postglacial Areas in Northern Poland—Prospects for Geotourism

et al. 2020

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This study aims to identify potential geosites and show existing geosites in a young glacial landscape in northern Poland through a qualitative assessment of the local geoheritage. Three areas of diversified morphology and geology located within the extent of the last Scandinavian Ice Sheet have been selected as the research polygons: the northeastern part of the Dobrzyń Lake District, the Lower Vistula Valley and the Kashubian Lake District. Three basic abiotic components of the environment have been analysed: geology, terrain relief and hydrology. This research is based on some specific materials including maps and photographs. Methodology of this research includes the inventory, characterization and assessment of selected areas. The final results are proposals for geosites of high educational value in each of the three investigated regions. For the northeastern part of the Dobrzyń Lake District, the creation of a geopark has been proposed, and the geosites of the Lower Vistula Valley provide the potential for a geotourist footpath to be designed. The Kashubian Lake District is characterised by the occurrence of numerous glacial landforms and sediments as well as high denivelations and a concentration of erratic boulders. Therefore, this region also has the potential to be selected for valuable geosites and the designing of a geotourist footpath.

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The Local Last Glacial Maximum of the southern Scandinavian Ice Sheet front: Cosmogenic nuclide dating of erratics in northern Poland

Cited by 46 publications

References 59 publications

Dynamics of the last Scandinavian Ice Sheet’s southernmost sector revealed by the pattern of ice streams

Dynamics of the last Scandinavian Ice Sheet’s southernmost sector revealed by the pattern of ice streams

Fluvial response to environmental conditions during MIS 4-3: a sedimentary record at the Brześnica site, central-western Poland

Geoheritage of Postglacial Areas in Northern Poland—Prospects for Geotourism

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