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Chronologie du second Mésolithique dans le Nord-Ouest de la France

Abstract : Several chronological systems have followed one another since the Second World War to place in time the Mesolithic sites of Brittany. The one developed by Olivier Kayser in the 1980s was the first to systematically use radiocarbon dates. Subsequently, a series of new dating by this isotopic method were carried out, both at reference sites (graves of Téviec and Hoedic, shells and charcoal in Beg-an-Dorchenn, or animal bones, charcoal and burnt fruit in Beg-er-Vil) and at newly excavated sites (Kerliézoc, Pont-Glas). Over time, many problems have arisen: too large mar-gins of error, oceanic reservoir effect, laboratory errors, stratigra-phic inaccuracies and sedimentary disturbances. They concern in particular shellfish levels, where specific problems arise, both for chemical reasons and because they are long-term habitats with a rather complex internal chronology. A critical examina-tion of these sites, combined with new dating techniques, has completely reversed the direction of the technical and stylistic evolutions of the second Mesolithic in Brittany, while dismantling certain Neolithic scenarios. At the end of this revolution, a new framework emerges for the 6th millennium in Brittany around some very solid but still too rare chronological landmarks (Beg-er-Vil and Beg-an-Dorchenn).
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Grégor Marchand, Rick Schulting. Chronologie du second Mésolithique dans le Nord-Ouest de la France. Rose-Marie Arbogast, Sylvain Griselin, Christian Jeunesse, Frédéric Séara (dir.). Le second Mésolithique, des Alpes à l’Atlantique (VII° - V° millénaire). Table ronde internationale, Strasbourg, les 3 et 4 novembre 2015, pp.109-125, 2019, Mémoire d'Archéologie du Grand-Est (MAGE 3). ⟨hal-02373524⟩

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