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Nouvelles données sur le paysage végétal de la moyenne vallée de l’Oise au subboréal : l’étude de la séquence organique de Thourotte (Oise, France)

Abstract : The INRAP rescue excavation campaign at Thourotte «La Motte» (60), associated to the lansdcape development of the «Seine-Nord Europe» channel, revealed new archaeological and palaeoenvironmental information on the poorly-explored area of the Middle Oise valley, upstream of Compiègne. Geophysical and morpho-sedimentary survey of a palaeochannel that scraped a mound led to the implementation of a multidisciplinary approach (archaeology, sedimentology, pollen and wood analyses, dendrochronology, zooarchaeology, radiocarbon dating). While sediment analyses unveiled the evolution of the alluvial plain since the last glaciation, the other studies mainly dealt with the channel organic matter filling. This filling dates back to the Early Subboreal, between c. 3600 and 2700 cal BC. The local environment seems to be mainly composed of alder forest around which oaks tend to grow. Organic sedimentation starts during a period of forest surface recovery leading to a densification of tree cover. Around 3000 cal BC, the riverside vegetation is cleared and crops are cultivated. The presence of ruderal species indicates the practice of arable and pastoral farming. These agro-pastoral activities might originate from Late Neolithic populations, which left some scarce remains on the mound and in the channel.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01713059
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Submitted on : Tuesday, February 20, 2018 - 10:33:37 AM
Last modification on : Friday, September 18, 2020 - 2:34:54 PM

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Chantal Leroyer, Gaël Barracand, Céline Coussot, Elise Werthe, Guillaume Hulin, et al.. Nouvelles données sur le paysage végétal de la moyenne vallée de l’Oise au subboréal : l’étude de la séquence organique de Thourotte (Oise, France). Quaternaire, Centre National de la Recherche Scientifique, 2017, 28 (4), pp.471-489. ⟨10.4000/quaternaire.8469⟩. ⟨hal-01713059⟩

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