FN Archimer Export Format
PT J
TI Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary
BT 
AF ROUSSEAU, Tristan C. C.
   SONKE, Jeroen E.
   CHMELEFF, Jerome
   VAN BEEK, Pieter
   SOUHAUT, Marc
   BOAVENTURA, Geraldo
   SEYLER, Patrick
   JEANDEL, Catherine
AS 1:1;2:1;3:1;4:2;5:2;6:3;7:4;8:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Univ Toulouse, CNRS, CNES, GET,IRD, F-31400 Toulouse, France.
   Univ Toulouse, CNRS, CNES, LEGOS,IRD, F-31400 Toulouse, France.
   Univ Brasilia, UNB, LAGEQ, BR-70910900 Brasilia, DF, Brazil.
   Univ Montpellier, IRD, CNRS, Hydrosci Montpellier, F-34000 Montpellier, France.
C2 UNIV TOULOUSE, FRANCE
   UNIV TOULOUSE, FRANCE
   UNIV BRASILIA, BRAZIL
   UNIV MONTPELLIER, FRANCE
IN DOAJ
IF 11.329
TC 122
UR https://archimer.ifremer.fr/doc/00298/40952/40046.pdf
   https://archimer.ifremer.fr/doc/00298/40952/40047.pdf
LA English
DT Article
CR AMANDES
DE ;Earth sciences;Biogeochemistry;Oceanography
AB Rare earth element (REE) concentrations and neodymium isotopic composition (epsilon Nd) are tracers for ocean circulation and biogeochemistry. Although models suggest that REE release from lithogenic sediment in river discharge may dominate all other REE inputs to the oceans, the occurrence, mechanisms and magnitude of such a source are still debated. Here we present the first simultaneous observations of dissolved (< 0.45 mu m), colloidal and particulate REE and eNd in the Amazon estuary. A sharp drop in dissolved REE in the low-salinity zone is driven by coagulation of colloidal matter. At mid-salinities, total dissolved REE levels slightly increase, while epsilon Nd values are shifted from the dissolved Nd river endmember (- 8.9) to values typical of river suspended matter (- 10.6). Combining a Nd isotope mass balance with apparent radium isotope ages of estuarine waters suggests a rapid (3 weeks) and globally significant Nd release by dissolution of lithogenic suspended sediments.
PY 2015
PD JUN
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 6
IS 7592
UT 000358855900005
BP 1
EP 8
DI 10.1038/ncomms8592
ID 40952
ER

EF