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Évolution morpho-sédimentaire de la vallée de la Choisille (sud-ouest du Bassin parisien, France) depuis le Weichsélien. Spécificité de l'impact climatique et anthropique en Europe du Nord-Ouest.

Abstract : The spatio-temporal variability of the Choisille valley morpho-sedimentary evolution (catchment: 288 km²), a tributary of the middle Loire River in the south-western Parisian Basin (37), was studied through 78 core-drillings (8 transects), geophysical prospecting, sedimentological analyses and 14C and OSL dating. Eight phases of fluvial system evolution were defined and correlated with palynological and archaeological dataset, in order to highlight the impact of forcing factors: climate and/or human activity. From the Weichselian up to the Subatlantic, the fluvial incision or sedimentation activity has strictly evolved under climate control. Since the Allerød, this evolution was different from what has been observed on other rivers of north-western Europe, indicating regional climatic or geological specificities. Since the Bronze Ages, the river has evolved under climatic and human control; the anthropogenic impact on sedimentation was dominant, but spatio-temporaly variable in the catchment, in relationship with the agricultural potentialities of the different areas.
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https://tel.archives-ouvertes.fr/tel-00627074
Contributor : Eymeric Morin <>
Submitted on : Tuesday, September 27, 2011 - 4:41:16 PM
Last modification on : Friday, October 23, 2020 - 4:51:58 PM

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  • HAL Id : tel-00627074, version 1

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Eymeric Morin. Évolution morpho-sédimentaire de la vallée de la Choisille (sud-ouest du Bassin parisien, France) depuis le Weichsélien. Spécificité de l'impact climatique et anthropique en Europe du Nord-Ouest.. Géomorphologie. Université François Rabelais - Tours, 2011. Français. ⟨tel-00627074⟩

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