Phénomènes torrentiels et transferts sédimentaires autour du massif de Tanargue, de l’âge du fer au petit âge de glace (PAG) (Cévennes vivaraises, France).

Abstract : Here we study torrential activity and hydrosedimentary flows in the Cevennes using a combination of historical and geomorphological methods. The geographical analysis of torrential phenomena shows that human occupation of the land strongly modulated slope erosion between the late eighteenth and the late nineteenth centuries. A chronicle of events shows alternating periods of high sediment delivery and periods of calm. The mapping and dating of stony deposits is used to reconstruct the morphodynamic evolution and evaluate the transfer rate of bedload at the end of the LIA. At one site a chronostratigraphic study was undertaken and provides some chronological brackets to interpret the rhythms of erosion since 3000 BP and set the LIA within a broader morphogenetic framework.
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Submitted on : Monday, May 9, 2016 - 4:22:08 PM
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  • HAL Id : hal-01313206, version 1

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Nicolas Jacob-Rousseau, Laurent Astrade. Phénomènes torrentiels et transferts sédimentaires autour du massif de Tanargue, de l’âge du fer au petit âge de glace (PAG) (Cévennes vivaraises, France).. Journal of Mediterranean Geography, 2014, Little Ice Age in the Mediterranean. ⟨hal-01313206⟩

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