Stable isotope record, and abundances of ice rafted debris and Neogloboquadrina pachyderma in sediments of the Iberian margin ...

This paper documents the migration of the Polar Front (PF) over the Iberian margin during some of the cold climatic extremes of the last 45 ka. It is based on a compilation of robust and coherent paleohydrological proxies obtained from eleven cores distributed between 36 and 42°N. Planktonic delta18...

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Bibliographic Details
Main Authors: Eynaud, Frédérique, de Abreu, Lucia, Voelker, Antje H L, Schönfeld, Joachim, Salgueiro, Emilia, Turon, Jean-Louis, Penaud, Aurélie, Toucanne, Samuel, Naughton, Filipa, Sanchez Goñi, Maria Fernanda, Malaizé, Bruno, Cacho, Isabel
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2009
Subjects:
Gravity corer Kiel type
Calypso Corer
Piston corer
M39/1
MD123
MD134
MD101
MD114
CEPAG
Meteor 1986
Marion Dufresne 1995
Le Suroît
International Marine Global Change Study IMAGES
Neogloboquadrina pachyderma
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.738148
https://doi.pangaea.de/10.1594/PANGAEA.738148
Description
Summary:This paper documents the migration of the Polar Front (PF) over the Iberian margin during some of the cold climatic extremes of the last 45 ka. It is based on a compilation of robust and coherent paleohydrological proxies obtained from eleven cores distributed between 36 and 42°N. Planktonic delta18O (Globigerina bulloides), ice-rafted detritus concentrations, and the relative abundance of the polar foraminifera Neogloboquadrina pachyderma sinistral were used to track the PF position. These three data sets, compared from core to core, show a consistent evolution of the sea surface paleohydrology along the Iberian margin over the last 45 ka. We focused on five time slices representative of cold periods under distinct paleoenvironmental forcings: the 8.2 ka event and the Younger Dryas (two recent cold events occurring within high values of summer insolation), Heinrich events 1 and 4 (reflecting major episodes of massive iceberg discharges into the North Atlantic), and the Last Glacial Maximum (typifying the ... : Supplement to: Eynaud, Frédérique; de Abreu, Lucia; Voelker, Antje H L; Schönfeld, Joachim; Salgueiro, Emilia; Turon, Jean-Louis; Penaud, Aurélie; Toucanne, Samuel; Naughton, Filipa; Sanchez Goñi, Maria Fernanda; Malaizé, Bruno; Cacho, Isabel (2009): Position of the Polar Front along the western Iberian margin during key cold episodes of the last 45 ka. Geochemistry, Geophysics, Geosystems, 10(7), Q07U05 ...

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