Pleistocene glacial history of the NW European continental margin

Ice sheet extension to the Celtic Sea shelf edge at the Last Glacial Maximum

“…2), noted to have ice-proximal or lodgment till textural affinities also reflected in a poor microfossil content (Scourse et al, 1990. Based on our cores, we argue these to be subglacially deformed sediments, part of a sheet of overconsolidated diamicts likely to extend across the shelf, including beneath cored glacimarine muds as suggested by Sejrup et al (2005).…”

“…1; Scourse et al, 1990Scourse et al, , 1991. The proposed grounding line has been noted to represent a minimum extent of glacial ice, given that glacimarine sediment at the base of several cores could be underlain by (un-cored) subglacial till (Sejrup et al, 2005). Ice-marginal landforms have not been recognized in the Celtic Sea, which is dominated by a system of shelfcrossing ridges interpreted as palaeo-tidal sand banks (Stride, 1963;Bouysse et al, 1976;Stride et al, 1982), overlain at one site (core 49/-09/44, Fig.…”

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

“…350 ka (McManus et al, 1999;Hiscott et al, 2001;Helmke and Bauch, 2003) and the high abundance of IRD in core MD03-2692 reinforces the idea that a massive iceberg discharge from the Northern Hemisphere ice sheets occurred during this interval. Glacigenic marine deposits in the northern North Sea and along the Norwegian margin reveal the presence of an extensive FIS, with an offshore extension considered similar to that in MIS 2, during the glacial MIS 10 ( Sejrup et al, 2000;Dahlgren et al, 2002;Nygard et al, 2005;Rise et al, 2005;Sejrup et al, 2005). This indicates that ice over Europe contributed to the global glaciation and to the attendant significant low sea level which occurred during this interval (e.g.…”

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

“…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).…”