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Can we estimate catchment-scale biomass production from sedimentary biomarkers? An attempt with miliacin in Late Bronze Age levels from Lake le Bourget (French Alps).

Abstract : The evaluation of demography for proto- and prehistoric times remains complex due to the rareness of human remains. Here we propose an original approach based on the combination of geophysical and organic geochemical techniques applied to the Late Bronze Age sedimentary infill of Lake le Bourget. Deep sediments were mapped and their volume estimated by sub-bottom seismic profiling calibrated (accoustically and chronologically) on piston cores. Multibeam bathymetry combined to a subaquatic archaeological survey allowed to precisely identify the extension of Late Bronze Age palafittic stations in shallow waters and to determine the volume of the associated organic rich deposits.
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  • HAL Id : insu-00842947, version 1

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Jérémy Jacob, Emmanuel Chapron, Yves Billaud, Grégoire Ledoux, Patrick Lajeunesse, et al.. Can we estimate catchment-scale biomass production from sedimentary biomarkers? An attempt with miliacin in Late Bronze Age levels from Lake le Bourget (French Alps).. The 25th International Meeting on Organic Geochemistry, Sep 2011, Interlaken, Switzerland. 2p. ⟨insu-00842947⟩

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