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Nouveau protocole de prélèvement et de préparation des macro‐charbons pour une généralisation des études anthraco‐chronologiques

Abstract : Methodological developments in anthracology make it now possible to register a large diversity of taxa, whose frequencies are representative of past environments, provided that reliable field sampling and sieving are undertaken. However, other information can be obtained from charcoal, especially from larger fragments. Since the early 2000s, several research projects have used the information provided by growth rings (pattern, width, etc.) visible on archaeological charcoal in order to answer questions related to duration of site occupations, inter-dating of artisanal or dwelling structures, fuel management, etc. Nevertheless, the chronological aspect remains underexploited, if not completely unexploited, in anthracological studies. On the one hand, the brittleness of charcoal, affecting precisely the fairly large fragments (over 2 cm large), those best able to provide chronological information, makes it difficult to measure a series of ring widths. On the other hand, the methods classically used in dendrochronology on longer series of rings are difficult to apply here. The first difficulty has been solved as a recent laboratory protocol makes it possible to obtain a flat surface over the entire cross-section, suitable for growth ring width measurements along one or more radius (Brossier & Poirier, 2018). Regarding the limited number of rings present on each observed section, the implementation of a precise sampling protocol is essential in order to contextualize the deposit from which each charcoal originates. Based on these protocols, which maximize the chances of synchronizing charcoal in the laboratory, reliable growth ring chronologies can be established. This paper presents this new protocol and underlines the interest of generalising the practice of anthraco-chronology in archaeological excavations.
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Contributor : Carine Carpentier <>
Submitted on : Tuesday, December 22, 2020 - 11:09:16 AM
Last modification on : Thursday, February 4, 2021 - 8:42:51 AM

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Benoît Brossier, Philippe Poirier, Christophe Vaschalde, Isabel Figueiral, Lucie Chabal, et al.. Nouveau protocole de prélèvement et de préparation des macro‐charbons pour une généralisation des études anthraco‐chronologiques. Bioarchéologie : minimums méthodologiques, référentiels communs et nouvelles approches, Carine Carpentier; Rose-Marie Arbogast; Philippe Kuchler, Nov 2019, Sélestat, France. ⟨10.34692/dwr6-hg62⟩. ⟨hal-03085993⟩

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