TY - JOUR
KW - 4901 Paleoceanography: Abrupt/rapid climate change
KW - 4926 Paleoceanography: Glacial
KW - 4944 Paleoceanography: Micropaleontology
KW - Celtic margin
KW - freshwater pulse/discharge
KW - glacial terminations
KW - ice-rafted detritus
KW - laminated sediments
KW - planktonic microfossils
AU - F. Eynaud
AU - S. Zaragosi
AU - J. Scourse
AU - M. Mojtahid
AU - J. Bourillet
AU - I. Hall
AU - A. Penaud
AU - M. Locascio
AU - A. Reijonen
AB - We have compiled results obtained from four high sedimentation rate hemipelagic sequences from the Celtic sector of the NW European margin (NE Atlantic) to investigate the paleoceanographic and paleoclimatic evolution of the area over the last few climatic cycles. We focus on periods characteristic of deglacial transitions. We adopt a multiproxy sedimentological, geochemical, and micropaleontological approach, applying a sampling resolution down to ten microns for specific intervals. The investigation demonstrates the relationships between the Bay of Biscay hydrography and the glacial/deglacial history of both the proximal British-Irish Ice Sheet (BIIS) and the western European continent. We identify recurrent phases of laminae deposition concurrent with major BIIS deglacial episodes in all the studied cores. Evidence for abrupt freshwater discharges into the open ocean highlights the influence of such events at a regional scale. We discuss their impact at a global scale considering the present and past key location of the Bay of Biscay versus the Atlantic Meridional Overturning Circulation (AMOC).
BT - Geochem. Geophys. Geosyst.
M1 - 6
N2 - We have compiled results obtained from four high sedimentation rate hemipelagic sequences from the Celtic sector of the NW European margin (NE Atlantic) to investigate the paleoceanographic and paleoclimatic evolution of the area over the last few climatic cycles. We focus on periods characteristic of deglacial transitions. We adopt a multiproxy sedimentological, geochemical, and micropaleontological approach, applying a sampling resolution down to ten microns for specific intervals. The investigation demonstrates the relationships between the Bay of Biscay hydrography and the glacial/deglacial history of both the proximal British-Irish Ice Sheet (BIIS) and the western European continent. We identify recurrent phases of laminae deposition concurrent with major BIIS deglacial episodes in all the studied cores. Evidence for abrupt freshwater discharges into the open ocean highlights the influence of such events at a regional scale. We discuss their impact at a global scale considering the present and past key location of the Bay of Biscay versus the Atlantic Meridional Overturning Circulation (AMOC).
PB - AGU
PY - 2007
SN - 1525-2027
EP - Q06019
T2 - Geochem. Geophys. Geosyst.
TI - Deglacial laminated facies on the NW European continental margin: The hydrographic significance of British-Irish Ice Sheet deglaciation and Fleuve Manche paleoriver discharges
UR - http://dx.doi.org/10.1029/2006GC001496
VL - 8
ER -