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Article Dans Une Revue Quaternaire Année : 2004

Holocene fluctuations of the Rhone river in the alluvial plain of the Basses Terres (Isère, Ain, France)

Résumé

Palaeoenvironmental and archaeological investigations have been in progress since 2 years, 70 km upstream from Lyon, in the upper Rhône valley. A multi-disciplinary team (palaeogeography, palaeoecology, archaeology) is attempting to reconstruct the spatio-temporal fluctuations of the nver and their origin through the survey of meandering palaeochannels A first spatial approach allowed us to identify several meanders Phases of channel change are identified from the recent Atlantic penod until the Subatlantic penod (Modern Times). Detailed stratigraphical study of 6 palaeomeander fills is undertaken Cores have been taken from pool fills units, up to the sandy-gravel bottom (6 meters m depth on the average), for palaeoenvironmental analysis. A chronological framework has been established (14C dating, palynology). The first results provide new information on fluvial dynamics and allow us to propose a reconstruction of the Basses Terres floodplain evolution during the Holocene Some archaeological investigations have been earned out m the alluvial plain. The goal is to assess the human activities pressure on the sector and their impact on the environment.
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Dates et versions

hal-00436660 , version 1 (27-11-2009)

Identifiants

Citer

G. Salvador, J.F. Berger, Emilie Gauthier, Boris Vannière. Holocene fluctuations of the Rhone river in the alluvial plain of the Basses Terres (Isère, Ain, France). Quaternaire, 2004, 15 (1-2), pp.177-186. ⟨10.3406/quate.2004.1765⟩. ⟨hal-00436660⟩
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