Contribution à la connaissance du paléoenvironnement de la vallée de la Deûle (Nord, France) : approche stratigraphique

Abstract : The variations both in time and in space of river systems make it necessary to develop paleoenvironmental surveys to better account for the strategies of occupation of the valley beds by men. This is the object of this paper which deals with the Deûle valley in which we publich the first stratigraphical results obtained in the Houplin-Ancoisne stretch, just upstream from the Lille urban area. The stress is laid on identifying one of the two historical channels draining the valley bed. The stratigraphical section points to the existence of a late iceage channel whose early filling starts around 12 500 BP and ends at the end of the Dryas (after 10 200 BP). This latter is cut on its right-hand bank by a second channel which opens at the beginning of the Holocene to be slowly filled in by silt predominantly of organic origin. From the Boreal (dated 8 380 BP), the lower points of the valley get filled with peat. The right-hand bank, very clearly drawn in the topography, is on the other hand favourable to the settling of men whose presence is confirmed by several neighbouring sites from the Neolithic
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Laurent Deschodt, Pierre-Gil Salvador. Contribution à la connaissance du paléoenvironnement de la vallée de la Deûle (Nord, France) : approche stratigraphique. Revue du Nord, Association Revue du Nord, 2003, 353 (5), pp.23-33. ⟨10.3917/rdn.353.0023⟩. ⟨hal-01489306⟩

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