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D. Baqué and . Ecolab, Aurélie Lanzanova and Pierre Brunet (both from Geoscience- Environnement-Toulouse, France) for their help with the preparation of the samples and the ICP-OES, ICP-MS and TIMS analyses Catherine Jeandel is thanked for her support with the set up of the Nd extraction procedureK.) are appreciated for their help on the eld. e former is also thanked for having separated the macrofossils for the radiocarbon measurements, anks to Ramiro Lopez and Veronica Pancotto (CADIC-CONICET, Ushuaia) for their help with coring and export of samples