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

• 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

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 ...