Record of glaciations off the east greenland coast over the last 400KYR : SM-ND isotopic signature of marine clays

• Main Authors: Fagel, Nathalie, Hilaire-Marcel, Claude
• Other Authors: Argiles, Géochimie et Environnement sédimentaires, Université de Liège, Centre de recherche sur la dynamique du système Terre (GEOTOP), École Polytechnique de Montréal (EPM)-McGill University = Université McGill Montréal, Canada -Université de Montréal (UdeM)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University Montreal -Université du Québec à Montréal = University of Québec in Montréal (UQAM)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2010
• Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology; [SDE.MCG]Environmental Sciences/Global Changes; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; Greenland; East Greenland; Labrador Sea
• Online Access: https://hal.univ-brest.fr/hal-00480696; https://hal.univ-brest.fr/hal-00480696/document; https://hal.univ-brest.fr/hal-00480696/file/Fagel_resume.pdf

We use Nd isotope signature of the clay-size fractions of sediments from the Southern Greenland rise to track deep current changes over the last climate cycle. Fine particle supplies to the Labrador Sea by Western Boundary UnderCurrent (WBUC) were strongly controlled by proximal ice-margin erosion and thus echoed the glacial stage intensity. In contrast, distal WBUC-controlled inputs from NE Atlantic have been less variable, except for a marked increase in surface-sediments that suggests unique modern conditions.