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, Samuel; Zaragosi, Sébastien; Bourillet, Jean‐François; Cremer, Michel; Eynaud, Frédérique; Vliët-Lanoé, Brigitte van; Penaud, Aurélie; Fontanier, Christophe; Turon, Jean‐Louis; Cortijo, Elsa; Gibbard, Philip L.

doi:10.1016/j.quascirev.2009.01.006

Cited by 184 publications

(256 citation statements)

References 157 publications

Supporting

Mentioning

234

Contrasting

Order By: Relevance

“…Dispersed drop clasts and pellets within the turbidite layers suggest that ice calving occurred at the same time as meltwater supply. High resolution sedimentary records from the Bay of Biscay also show a similar pattern for meltwater events, with turbidites attributed to meltwater during warm periods, and IRD beds topping the turbidites during cold periods (Zaragosi et al, 2006;Toucanne et al, 2009;Roger et al, 2013). Thus, Heinrich events appear to involve seasonal meltwater discharge and iceberg calving, similar to that seen at modern glacier outlets.…”

mentioning

confidence: 67%

See 1 more Smart Citation

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Stokes

Tarasov

Blomdin

et al. 2015

Quaternary Science Reviews

148

104

View full text Add to dashboard Cite

mentioning

confidence: 67%

“…Sedimentary records suggest that meltwater pulses started shortly after or around H4 (Lekens et al, 2006;Toucanne et al, 2009). The amount of meltwater increased toward the LGM, with a climax from 15 to 28 ka ( Figure 11) (Lekens et al, 2006;Haapaniemi et al, 2010; 26 Roger et al, 2013).…”

mentioning

confidence: 99%

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Stokes

Tarasov

Blomdin

et al. 2015

Quaternary Science Reviews

148

104

View full text Add to dashboard Cite

“…The input of ice-rafted debris (IRD) allows reconstruction of ice sheet dynamics, ice source, and iceberg-melt location (Ruddiman, 1977;Bond and Lotti, 1995;Hemming, 2004). The marine record of Eurasian glacial episodes (e.g., Spielhagen et al, 2004;Sejrup et al, 2005;Toucanne et al, 2009;Obrochta et al, 2014;L€ owemark et al, 2016) and geophysical mapping (e.g., Polyak et al, 2001Polyak et al, , 2004Jakobsson et al, 2010;Niessen et al, 2013;Dove et al, 2014), indicate differences between the LGM and PGM glaciations, with suggestions that the PGM/MIS 6 glaciation was one of the more extensive glacial episodes. Conversely, IRD from North America (Hudson Strait) does not seem to have reached the North Atlantic IRD belt during the penultimate glacial cycle (Obrochta et al, 2014), while it still occurred in the Labrador Sea, in close proximity to the eastern North American margin (Channell et al, 2012).…”

Section: Synthesis Of Pgm Ice-sheet Extents Mapping and Datingmentioning

confidence: 99%

Differences between the last two glacial maxima and implications for ice-sheet, δ18O, and sea-level reconstructions

Rohling

Hibbert

Williams

et al. 2017

Quaternary Science Reviews

115

View full text Add to dashboard Cite

Arctic ice shelf Last Interglacial Glacioisostatic adjustment a b s t r a c t Studies of past glacial cycles yield critical information about climate and sea-level (ice-volume) variability, including the sensitivity of climate to radiative change, and impacts of crustal rebound on sealevel reconstructions for past interglacials. Here we identify significant differences between the last and penultimate glacial maxima (LGM and PGM) in terms of global volume and distribution of land ice, despite similar temperatures and radiative forcing. Our analysis challenges conventional views of relationships between global ice volume, sea level, seawater oxygen isotope values, and deep-sea temperature, and supports the potential presence of large floating Arctic ice shelves during the PGM. The existence of different glacial 'modes' calls for focussed research on the complex processes behind ice-age development. We present a glacioisostatic assessment to demonstrate how a different PGM ice-sheet configuration might affect sea-level estimates for the last interglacial. Results suggest that this may alter existing last interglacial sea-level estimates, which often use an LGM-like ice configuration, by several metres (likely upward).

show abstract

“…This was achieved partially through their ability to reroute continental meltwater runoff, with resultant modification of oceanic circulation and climate, as demonstrated around the North American (Broecker et al, 1989;Clark et al, 2001) and European ice sheets (Gibbard, 1988;Mangerud et al, 2004;Toucanne et al, 2009a). Through the correlation of the European continental glaciation-derived chronology with marine records from the Bay of Biscay (NE Atlantic), recent studies demonstrate that advance of Pleistocene ice masses into the Northern European lowlands during MIS (Marine Isotope Stage) 12 (Elsterian glaciation) and MIS 6 (Saalian Drenthe Substage ice-advance) strongly modified the flow directions of central European rivers (Toucanne et al, 2009a;Toucanne et al, 2009b). These diversions induced massive southwards discharges of meltwaters through the English Channel, and hence caused significant increases in the Fleuve Manche palaeoriver runoff, particularly during subsequent deglaciation (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Sejrup et al, 2000;Clark et al, 2004;Carr et al, 2006;Bradwell et al, 2008;Sejrup et al, 2009). However, the timing of intense Fleuve Manche runoff, ca 20-17 ka (Zaragosi et al, 2001;Ménot et al, 2006;Eynaud et al, 2007;Toucanne et al, 2008;Toucanne et al, 2009a), i.e. at time of maximum decay of the BIS and FIS (e.g.…”

Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

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

Cited by 184 publications

References 157 publications

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

Differences between the last two glacial maxima and implications for ice-sheet, δ18O, and sea-level reconstructions

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

Contact Info

Product

Resources

About