FN Archimer Export Format
PT J
TI Glacial erosion dynamics in a small mountainous watershed (Southern French Alps): A source-to-sink approach
BT 
AF BONNEAU, Lucile
   TOUCANNE, Samuel
   BAYON, Germain
   JORRY, Stephan
   EMMANUEL, Laurent
   SILVA JACINTO, Ricardo
AS 1:1,2;2:2;3:2;4:2;5:1;6:2;
FF 1:PDG-REM-GM-LES;2:PDG-REM-GM-LGS;3:PDG-REM-GM-LGS;4:PDG-REM-GM-LGS;5:;6:PDG-REM-GM-LGS;
C1 Univ Paris 06, Lab Biomineralisat & Environm Sedimentaires, ISTeP UMR CNRS 7193, F-75252 Paris, France.
   IFREMER, Unite Rech Geosci Marines, Lab Biomineralisat & Environm Sedimentaires, F-29280 Plouzane, France.
C2 UNIV PARIS 06, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GM-LES
   PDG-REM-GM-LGS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 4.581
TC 16
UR https://archimer.ifremer.fr/doc/00358/46957/47130.pdf
LA English
DT Article
CR ESSDIV
BO Pourquoi pas ?
DE ;Var;routing system;glacial erosion;source-to-sink
AB In this study we used major element composition, neodymium isotopes ratios (εNdεNd) and concentration of REE to track and quantify the sediment routing in the Var sedimentary system from source (Southern French Alps) to sink (Ligurian Sea) over the last 50 ka. Our data reveal that changes in sediment sources over that period, associated with concomitant changes in the hyperpycnal (i.e. flood-generated turbidity currents) activity in the Var submarine canyon, were mainly driven by paleoenvironmental conditions in the upper basin and in particular by the presence of glaciers during the last glacial period. Based on this evidence, we determined when and how glacier-derived sediments were produced, then excavated and transferred to the ocean, allowing us to ultimately tune offshore sedimentary records to onshore denudation rates. In contrast to large glaciated systems, we found that sediment export from the Var River to the Mediterranean Sea directly responded to climate-induced perturbations within the basin. Finally, we estimated that sediment fluxes in the Var routing system were 2.5 times higher during the Last Glacial Maximum than today, thus confirming that glacier denudation rates exceed fluvial rates and that such a pattern also governs the interglacial–glacial sediment flux cycle in other small mountainous basins
PY 2017
PD JAN
SO Earth And Planetary Science Letters
SN 0012-821X
PU Elsevier Science Bv
VL 458
UT 000392685100035
BP 366
EP 379
DI 10.1016/j.epsl.2016.11.004
ID 46957
ER

EF