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Etude isotopique (Sr-Nd) de l'origine des depots fins holocenes du littoral atlantique (S-O France)
Provedor de dados: 5
Autores: Parra, M; Trouky, H; Jouanneau, Jm; Grousset, F; Latouche, C; Castaing, P.
The fine-grained sediments of the West Gironde mud patch derive mainly from materials supplied via the Gironde estuary. Between 1500 and 1200/1300 years BP and 300/400 years BP and the present day, the Sr isotopic and chemical compositions of the estuarine silty clay inputs are the same. In contrast, these compositions were different during the period 1200/1300 to 300/400 years BP These variations probably reflect anthropogenic activities including cultivation and agriculture, in the Garonne and Dordogne drainage basins during the medieval period. Modern silty clay sedimentation in the mud flats of the Marennes-Oleron basin and Perthuis Breton is characterised by the occurrence of important quantities (between 40 and 90 % of the total) of detritus that...
Tipo: Text
Palavras-chave: Isotope Sr-Nd; Origine; Sédiment fin holocène; Vasière littorale atlantique; Sr-Nd isotope; Origin; Holocene fine-grained deposit; Atlantic littoral mudflat.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00325/43648/43244.pdf