Deglaciation and palaeoclimate of the Andfjord-Vagsfjord area, North Norway

Vorren, Tore O.; Plassen, Liv

doi:10.1080/030094802320129926

Cited by 124 publications

(100 citation statements)

References 56 publications

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“…ca 10 kyr after its diversion towards the Bay of Biscay. The strong increase of the Fleuve Manche activity from ca 20 ka which is contemporaneous with the significant retreat of the FIS from its maximum extent (Marks, 2002;Vorren and Plassen, 2002;Dahlgren and Vorren, 2003;Nygard et al, 2004;Lekens et al, 2005;Rinterknecht et al, 2006;Knies et al, 2007;Goehring et al, 2008;Krohn et al, 2009) confirms the close relationship between the Fleuve Manche and the FIS. Moreover, it confirms the southwards flow of the Elbe-Weser system until the end of the last glacial period.…”

Section: Chronology Of the Late Pleistocene Southwards Routing Of Bismentioning

confidence: 49%

The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago

Toucanne

Zaragosi

Bourillet

et al. 2010

Earth and Planetary Science Letters

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Abstract:The Fleuve Manche (English Channel) palaeoriver represents the largest river system that drained the European continent during Pleistocene lowstands, particularly during the Elsterian (Marine Isotope Stage 12) and Saalian Drenthe (MIS 6) glaciations when extensive ice advances into the North Sea area forced the central European rivers to flow southwards to the Bay of Biscay (NE Atlantic). Numerous long piston cores and high-resolution acoustic data from the northern Bay of Biscay have been correlated using a well-constrained chronostratigraphical framework, and for the first time allow the estimation of the discharge of the Fleuve Manche palaeoriver at the end of the last glacial period (i.e. Weichselian). Our results, discussed in the light of relationships between river loads and drainage area characteristics, strongly suggest that the Bay of Biscay collected sediment-laden meltwater from the Northern European lowlands and the southern part of the Fennoscandian ice sheet at the end of the last glacial period and particularly during the paroxysmal phase of the European deglaciation ca 20-18 ka ago. This demonstrates that the Fleuve Manche drainage area at that time was equivalent to those dating from the major Elsterian and Saalian Drenthe glaciations. Based on our data, we propose a revision of the palaeogeographical and palaeoglaciological evolution of the North Sea area while showing that the British and Fennoscandian ice sheets entered the North Sea basin until ca 18 ka initiating isostatic adjustment of the basin. This allowed the North Sea fluvial system to flow southwards through the Dover Strait. Finally, we discuss the Fleuve Manche freshwater discharge during the maximum European ice sheet retreat ca 18 ka. The estimated discharge at this time appears important and sufficiently sustained to possibly contribute to the profound destabilisation of the thermohaline circulation recognised in the North Atlantic from ca 18 to 16 ka.

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Section: Chronology Of the Late Pleistocene Southwards Routing Of Bismentioning

confidence: 49%

The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago

Toucanne

Zaragosi

Bourillet

et al. 2010

Earth and Planetary Science Letters

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“…The strong increase of the 'Fleuve Manche' activity from ca. 18.3 ka occurred at time of important environmental changes in the north and north-western British ice margin (Knutz et al, 2002a;Knutz et al, 2002b;Wilson et al, 2002;Hall et al, 2006), contemporaneous with the maximum decay of the FIS (Svendsen et al, 1996;Kleiber et al, 2000;Vorren and Plassen, 2002;Dahlgren and Vorren, 2003;Nygard et al, 2004;Lekens et al, 2005;Knies et al, 2007;Rinterknetch et al, 2007;Goehring et al, 2008), reinforcing the idea that the 'Fleuve Manche' activity was strongly dependent on the surrounding ice-sheet runoff. As a result, the 'Fleuve Manche' was a glacially-fed river and the Bay of Biscay was a depocentre for the European ice sheets erosional products, whose accumulations are still widely visible all along the southern margins of the past FIS (Eissmann, 2002;Houmark-Nielsen and Kjaer, 2003; and BIIS (Eyles and McCabe, 1989;Bowen et al, 2002;Evans and O'Cofaigh, 2003).…”

Section: Resultsmentioning

confidence: 64%

Timing of massive ‘Fleuve Manche’ discharges over the last 350kyr: insights into the European ice-sheet oscillations and the European drainage network from MIS 10 to 2

Toucanne

Zaragosi

Bourillet

et al. 2009

Quaternary Science Reviews

188

234

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“…11) than postulated by Mangerud (1977Mangerud ( , 2000Mangerud ( , 2004. Other studies from Norway also suggest that the YD glacier expansion started late in the Allerød (Bergstrøm, 1999;Vorren and Plassen, 2002). The YD climates in western Norway were cold but also dry (Dahl and Nesje, 1992;Birks et al, 1994).…”

Section: Sea-level Change and Ice-sheet Fluctuationsmentioning

confidence: 82%

Calendar year age estimates of Allerød–Younger Dryas sea‐level oscillations at Os, western Norway

Lohne¹,

Bondevik²,

Mangerud³

et al. 2004

J Quaternary Science

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Abstract:A detailed shoreline displacement curve documents the Younger Dryas transgression in western Norway. The relative sea-level rise was more than 9m in an area which subsequently experienced an emergence of almost 60 m. The sea-level curve is based on the stratigraphy of six isolation basins with bedrock thresholds. Effort has been made to establish an accurate chronology using a calendar year time-scale by 14C wiggle matching and the use of time synchronic markers (the Vedde Ash Bed and the postglacial rise in Betula (birch) pollen). The sea-level curve demonstrates that the Younger Dryas transgression started close to the Allerød-Younger Dryas transition and that the high stand was reached only 200 yr before the Younger Dryas-Holocene boundary. The sea level remained at the high stand for about 300 yr and 100 yr into Holocene it started to fall rapidly. The peak of the Younger Dryas transgression occurred simultaneously with the maximum extent of the ice-sheet readvance in the area. Our results support earlier geophysical modelling concluding a causal relationship between the Younger Dryas glacier advance and Younger Dryas transgression in western Norway. We argue that the sea-level curve indicates that the Younger Dryas glacial advance started in the late Allerød or close to the Allerød-Younger Dryas transition.

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Deglaciation and palaeoclimate of the Andfjord-Vagsfjord area, North Norway

Cited by 124 publications

References 56 publications

The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago

The first estimation of Fleuve Manche palaeoriver discharge during the last deglaciation: Evidence for Fennoscandian ice sheet meltwater flow in the English Channel ca 20–18 ka ago

Timing of massive ‘Fleuve Manche’ discharges over the last 350kyr: insights into the European ice-sheet oscillations and the European drainage network from MIS 10 to 2

Calendar year age estimates of Allerød–Younger Dryas sea‐level oscillations at Os, western Norway

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