BERTRAN, Pascal; ALLENET, Gisèle; BRENET, Michel; CHADELLE, Jean-Pierre; DIETSCH-SELLAMI, Marie-France; HEBRARD, Jean-Pierre; MADELAINE, Georges; MERCIER, Norbert; PASQUET, Vincent; PONEL, Philippe; QUEFFELEC, Alain; SIRIEIX, Colette

doi:10.1016/j.palaeo.2016.02.008

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BERTRAN, Pascal
Institut national de recherches archéologiques préventives [Inrap]

ALLENET, Gisèle
Institut national de recherches archéologiques préventives [Inrap]

BRENET, Michel
De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie [PACEA]
Institut national de recherches archéologiques préventives [Inrap]

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Palaeogeography, Palaeoclimatology, Palaeoecology. 2016, vol. 449, p. 149--165

Elsevier

Résumé en anglais

A deep sequence of Last Glacial peats and slope deposits at the foot of the Lascaux hill was investigated using a large array of methods (geology, geophysics, C-14 and OSL dating, palynology, macro-remain analysis, entomology). The peaty levels, OSL dated to between similar to 73 and 60 ka, are found Within a doline developed in a fluvial terrace of the Vezere River. These gyttja and chalky gyttja deposits covered by fen peat yielded abundant beetle and plant (seeds, pollen) remains. Palaeoecological reconstructions suggest a cool steppe with willow stands compatible with an interstadial of marine isotopic stage (MIS) 4, probably Ognon II (GI-192). Aquatic and hygrophilous plants (sedges), which reflect local vegetation, and their dependent insects are equally well represented in the record. The peats are covered by a sequence of slope deposits: a coarse-grained lower unit deposited during late MIS 4, overlain by a heavily decalcified sandy unit with a boreal soil complex correlated with early MIS 3, and finally, a coarse grained, calcareous unit formed during late MIS 3 and MIS 2 in connection with slope dynamics typical of periglacial environments. The palaeosols yielded a small Middle Palaeolithic lithic assemblage.< Réduire

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Weichselian slope deposits

Ognon II interstadial

MIS 4 peat

Southwest France

Palaeotemperatures

Palaeoecology

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Last Glacial palaeoenvironments at Lascaux, southwest France, with special emphasis on MIS 4 (Ognon II interstadial)

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