Denudation systematics inferred from in situ cosmogenic 10Be concentrations in fine (50–100 µm) and medium (100–250 µm) sediments of the Var River basin, southern French Alps
Apolline Mariotti,Pierre-Henri Blard,Julien Charreau,Carole Petit,Stéphane Molliex,and the ASTER Team
Aix-Marseille Université, CNRS, IRD, INRA, Coll France, UM 34 CEREGE,
Technopôle de l'Environnement Arbois-Méditerranée, BP80, 13545
Aix-en-Provence, France
A full list of authors and their affiliations appears at the end of the paper.
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This work is the first assessment of the suitability of the in situ 10Be method to determine denudation rates from fine (50–100 μm) detrital quartz at the watershed scale. This method is used worldwide to determine denudation rates from sandy sediments (250 μm-1 mm). We show that in the Var catchment fine-grained sediments (50–100 μm) are suited to the 10Be method, which is vital for future applications of 10Be in sedimentary archives such as offshore sediments.
This work is the first assessment of the suitability of the in situ 10Be method to determine...