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An Ocean – Ice Coupled Response During the Last Glacial: Zooming on the Marine Isotopic Stage 3 South of the Faeroe Shetland Gateway : Volume 8, Issue 4 (01/08/2012)

By Zumaque, J.

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Book Id: WPLBN0003977686
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File Size: Pages 49
Reproduction Date: 2015

Title: An Ocean – Ice Coupled Response During the Last Glacial: Zooming on the Marine Isotopic Stage 3 South of the Faeroe Shetland Gateway : Volume 8, Issue 4 (01/08/2012)  
Author: Zumaque, J.
Volume: Vol. 8, Issue 4
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Marret, F., Zaragosi, S., Eynaud, F., Kissel, C., Billy, I., Zumaque, J.,...Malaizé, B. (2012). An Ocean – Ice Coupled Response During the Last Glacial: Zooming on the Marine Isotopic Stage 3 South of the Faeroe Shetland Gateway : Volume 8, Issue 4 (01/08/2012). Retrieved from

Description: Environnements et Paléoenvironnements Océaniques (EPOC), UMR5805, CNRS – Université Bordeaux I, Talence, France. The rapid climatic variability characterising the Marine Isotopic Stage (MIS) 3 (~ 60–30 CAL-ka BP) provides key issues to understand the atmosphere-ocean-cryosphere dynamics. Here we investigate the response of sea-surface paleoenvironments to the MIS3 climatic variability through the study of a high resolution oceanic sedimentological archive (core MD99-2281, 60°21′ N; 09°27′ W; 1197 m water depth), retrieved during the MD114-IMAGES (International Marine Global Change Study) cruise from the Southern part of the Faeroe Bank. This sector was under the proximal influence of European Ice Sheets (Fennoscandian Ice Sheet to the East, British Irish Ice Sheet to the South) and thus probably recorded their response to the MIS3 pulsed climatic changes.

We conducted a multi-proxy analysis on core MD99-2281, including magnetic properties, X-Ray Fluorescence measurements, characterisation of the coarse (> 150 μm) lithic fraction (grain concentration) and the analysis of selected biogenic proxies (assemblages and stable isotope ratio of calcareous planktonic foraminifera, dinoflagellate cyst – e.g. dinocyst – assemblages). Results presented here are focussed on the dinocyst response, this proxy providing the reconstruction of past sea-surface hydrological conditions, qualitatively as well as quantitatively (e.g. transfer function sensu lato). Our study documents a very coherent and sensitive oceanic response to the MIS3 rapid climatic variability: strong fluctuations, matching those of stadial/interstadial climatic oscillations as depicted by Greenland Ice Cores, are recorded in the MD99-2281 archive. Proxies of terrigeneous and detritical material typify increases in continental advection during Greenland Stadials (including Heinrich events), the latter corresponding also to southward migrations of polar waters. At the opposite, milder sea-surface conditions seem to develop during Greenland Interstadials. After 30 ka, reconstructed paleohydrological conditions evidence strong shifts in SST: this increasing variability seems consistent with the hypothesised coalescence of the British and Fennoscandian ice sheets at that time, which could have directly influenced sea-surface environments in the vicinity of core MD99-2281.

An Ocean – ice coupled response during the last glacial: zooming on the marine isotopic stage 3 south of the Faeroe Shetland Gateway

Alley, R. B., Clark, P. U., Keigwin, L. D., and Webb, R. S.: Making sense of millennial-scale climate change, in: Mechanisms of global climate change at millennial time scales, edited by: Clark, P. U., Webb, R. S., and Keigwin, L. D., Geophys. Monogr., 112, 385–394, 1999.; Alvarez-Solas, J., Charbit, S., Ramstein, G., Paillard, D., Dumas, C., Ritz, C., and Roche, D. M.: Millennial-scale oscillations in the southern ocean in response to atmospheric CO2 increase, Global Planet. Change, 76, 128–136, 2010.; Auffret, G. A., Boelaert, A., Vergnaud-Grazzini, C., Müller, C., and Kerbrat, R.: Identification of Heinrich layers in core ks 01 north-eastern Atlantic (46° N, 17° W), implications for their origin, Mar. Geol., 131, 5–20, 1996.; Austin, W. E. N. and Hibbert, F. D.: Tracing time in the ocean: A brief review of chronological constraints (60–8 kyr) on north atlantic marine event-based stratigraphies, Quaternary Sci. Rev., 36, 28–37, 2012.; Ballini, M., Kissel, C., Colin, C., and Richter, T.: Deep-water mass source and dynamic associated with rapid climatic variations during the last glacial stage in the north Atlantic: a multi-proxy investigation of the detrital fraction of deep-sea sediments, Geochem. Geophy. Geosy., 7, Q02N01, doi:10.1029/2005GC001070, 2006.; Bard, E.: Geochemical and geophysical implications of the radiocarbon calibration, Geochim. Cosmochim. Ac., 62, 2025–2038, 1998.; Bard, E., Arnold, M., Hamelin, B., Tisnerat-Laborde, N., and Cabioch, G.: Radiocarbon calibration by means of mass spectrometric 230th/234u and 14c ages of corals. An updated data base including samples from Barbados, Mururoa and Tahiti, Radiocarbon, 40, 1085–1092, 1998.; Berger, A.: Les causes astronomiques des grandes variations du climat au Quaternaire, C.R. Palevol., 5, 21–26, 2006.; Bett, B. J.: UK atlantic margin environmental survey: introduction and overview of bathyal benthic ecology, Cont. Shelf Res., 21, 917–956, 2001.; Bogus, K. A., Zonneveld, K. A. F., Fischer, D., Kasten, S., Bohrmann, G., and Versteegh, G. J. M.: The effect of meter-scale lateral oxygen gradients at the sediment-water interface on selected organic matter based alteration, productivity and temperature proxies, Biogeosciences, 9, 1553–1570, doi:10.5194/bg-9-1553-2012, 2012.; Boldreel, L. O., Andersen, M. S., and Kuijpers, A.: Neogene seismic facies and deep-water gateways in the faeroe bank area, ne atlantic, Mar. Geol., 152, 129–140, 1998.; Bond, G. and Lotti, R.: Iceberg discharges into the north Atlantic on millennial time scales during the last glaciation, Science, 267, 1005–1010, 1995.; Bond, G., Heinrich, H., Broecker, W., Labeyrie, L., McManus, J., Andrews, J., Huon, S., Jantschik, R., Clasen, S., Simet, C., Tedesco, C., Klas, M., Bonani, G., and Ivy, S.: Evidence for massive discharges of icebergs into the north Atlantic ocean during the last glacial period, Nature, 360, 246–249, 1992.; Boulay, S.: Variabilité climatique rapide en atlantique nord – un potentiel de réponses: La carotte MD99-2281 (sud des îles faeroes), MASTER Université Paris-Sud, Orsay, 2000.; Bourillet, J.-F., Reynaud, J. Y., Baltzer, A., and Zaragosi, S.: The fleuve manche: The sub-marine sedimentary features from the outer shelf to the deep-sea fans, J. Quateranry Sci., 18, 261–282, 2003.; Brachfeld, S., Kissel, C., Laj, C., and Mazaud, A.: Behavior of u-channels during acquisition and demagnetization of remanence: Implications for paleomagnetic and rock-magnetic measurements, Phys. Earth Planet. In., 145, 1–8, 2004.; Bradwell, T., Stoker, M., and Larter, R.: Geomorphological signature and flow dynamics of the minch palaeo-ice stream, northwest Scotland, J. Quaternary Sci., 22, 609–617, 2007.; Bradwell, T., Stoker, M., Golledge, N. R., Wilson, C. K., Merritt, J. W., Long, D., Everest, J. D., Hestvik, O. B., Stevenson, A. G., Hubba


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