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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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| HAL : halsde-00517745, version 1 |
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| Quaternary Research 74, 2 (2010) 246-251 |
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| Speleothem evidence of warm episodes in northeast France during Marine Oxygen Isotope Stage 3 and implications for permafrost distribution in northern Europe |
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| Edwige Pons-Branchu 1, 2Bruno Hamelin 1 |
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| (09/2010) |
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| U–Th ages have been obtained by TIMS on the growth periods of a stalagmite from the “Grotte des Puits de Pierre-la-Treiche” (northeastern France), during the middle part of the “Weichselian glaciation” (Marine Isotope Stage 3), between 55.36 ± 0.95 and 53.34 ± 0.49 ka and around 45.85 ± 0.49 ka. These episodes are contemporaneous with abrupt climatic variations recorded in Greenland ice cores (Greenland interstadials 12, 14 and 15) that have been previously recognized in European speleothems. They also coincide with two interstadials, known as “Goulotte” and “Pile” in the Grande Pile pollen sequence (eastern France), which have been correlated with the Moershoofd complex in the Netherlands. Such evidence of speleothem deposition related to temperate episodes gives a strong indication of the absence of continuous shallow permafrost during the middle part of MIS 3 in northeastern France. |
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| 1 : | Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) |
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CNRS : UMR6635 – Institut de recherche pour le développement [IRD] – INSU – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III |
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| 2 : | Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE) |
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CNRS : UMR8212 – CEA : DSM/LSCE – Université de Versailles Saint-Quentin-en-Yvelines |
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| 3 : | Centre d'Etudes Géographiques (CEGUM) |
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Université Paul Verlaine - Metz |
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| 4 : | Environnements, Dynamiques et Territoires de la Montagne (EDYTEM) |
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CNRS : UMR5204 – Université de Savoie |
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| 5 : | Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA) |
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ANDRA |
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| domaine | : | Sciences de l'environnement/Milieux et Changements globaux |
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| Speleothems – Paleoclimate – Weichselian glaciation – Permafrost – MIS3 |
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| halsde-00517745, version 1 | |
| http://hal-sde.archives-ouvertes.fr/halsde-00517745 | |
| oai:hal-sde.archives-ouvertes.fr:halsde-00517745 | |
| Contributeur : Charlotte Foray | |
| Soumis le : Mercredi 15 Septembre 2010, 13:56:05 | |
| Dernière modification le : Mercredi 15 Septembre 2010, 13:56:05 | |
