SitziaBertranBahainEtAl2015

Reference

Sitzia, L., Bertran, P., Bahain, J.-J., Bateman, M.D., Hernandez, M., Garon, H., de Lafontaine, G., Mercier, N., Leroyer, C., Queffelec, A., Voinchet, P. (2015) The quaternary coversands of southwest France. Quaternary Science Reviews, 124:84-105. (Scopus )

Abstract

Detailed stratigraphic analysis and numerical dating (OSL, IRSL, ESR, 14C) of Pleistocene coversands in southwest France enable the construction of a renewed chronostratigraphic framework for sand deposition. The chronological data obtained from sandsheet units testify to the development of transgressive dunefields since at least the Middle Pleistocene (MIS 10). Three main phases of accumulation occurred during the Last Glacial. The oldest one (64-42 ka) is associated with wet sandsheet facies, histic horizons and zibar-type dune fields, which reflect deposition in a context strongly influenced by the groundwater table. The Late Pleniglacial (24-14 ka) corresponds to the main phase of coversand extension in a drier context. Silty gley horizons suggest, however, local interruptions of sand drifting during GS 2.1. Lateglacial stabilization of the coversands may not have occurred before GI-1c (Allerød), which was typified by the development of cumulic arenosols. These were covered by parabolic dunes during the Younger Dryas. The variations in extent of the emerged continental shelf during the glacial-interglacial cycles may explain the uneven geographical distribution of sand deposition through time. Because of coastline retreat up to 100km north of 45°N during the LGM lowstand, the coversands were unable to reach the northern part of the basin. Comparison with other European regions highlights stronger affinities of the French record with Portugal than with the Netherlands and Great Britain, probably because of reduced influence of permafrost. © 2015 Elsevier Ltd.

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@ARTICLE { SitziaBertranBahainEtAl2015,
    AUTHOR = { Sitzia, L. and Bertran, P. and Bahain, J.-J. and Bateman, M.D. and Hernandez, M. and Garon, H. and de Lafontaine, G. and Mercier, N. and Leroyer, C. and Queffelec, A. and Voinchet, P. },
    TITLE = { The quaternary coversands of southwest France },
    JOURNAL = { Quaternary Science Reviews },
    YEAR = { 2015 },
    VOLUME = { 124 },
    PAGES = { 84-105 },
    NOTE = { cited By 14 },
    ABSTRACT = { Detailed stratigraphic analysis and numerical dating (OSL, IRSL, ESR, 14C) of Pleistocene coversands in southwest France enable the construction of a renewed chronostratigraphic framework for sand deposition. The chronological data obtained from sandsheet units testify to the development of transgressive dunefields since at least the Middle Pleistocene (MIS 10). Three main phases of accumulation occurred during the Last Glacial. The oldest one (64-42 ka) is associated with wet sandsheet facies, histic horizons and zibar-type dune fields, which reflect deposition in a context strongly influenced by the groundwater table. The Late Pleniglacial (24-14 ka) corresponds to the main phase of coversand extension in a drier context. Silty gley horizons suggest, however, local interruptions of sand drifting during GS 2.1. Lateglacial stabilization of the coversands may not have occurred before GI-1c (Allerød), which was typified by the development of cumulic arenosols. These were covered by parabolic dunes during the Younger Dryas. The variations in extent of the emerged continental shelf during the glacial-interglacial cycles may explain the uneven geographical distribution of sand deposition through time. Because of coastline retreat up to 100km north of 45°N during the LGM lowstand, the coversands were unable to reach the northern part of the basin. Comparison with other European regions highlights stronger affinities of the French record with Portugal than with the Netherlands and Great Britain, probably because of reduced influence of permafrost. © 2015 Elsevier Ltd. },
    AFFILIATION = { Université Bordeaux, PACEA, UMR 5199, Pessac cedex, 33615, France; Inrap, 156 avenue Jean Jaurès, Pessac, 33600, France; MNHN, UMR 7194, rue René Panhard, Paris, 75013, France; Geography Department, University of Sheffield, Winter Street, Sheffield, S10 2TN, United Kingdom; Université Bordeaux, CRPAA, UMR 5060, Maison de l'Archéologie, Pessac cedex, 33607, France; Canada Research Chair in Forest and Environmental Genomics, Centre for Forest Research, Institute for Systems and Integrative Biology, Université Laval, 1030 avenue de la Medecine, Quebec, QC G1V 0A6, Canada; MCC, UMR 6566 CReAAH, Laboratoire ArchéoSciences, Campus de Beaulieu, bât. 24-25, CS 74205, Rennes cedex, 35042, France },
    AUTHOR_KEYWORDS = { Coversand; ESR; Middle and Late Pleistocene; OSL; Palaeosols; Southwest France },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.quascirev.2015.06.019 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937467960&doi=10.1016%2fj.quascirev.2015.06.019&partnerID=40&md5=11b6a515a4c24e7d2085bec872f4d813 },
}

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