FN Archimer Export Format
PT J
TI Increased input of circumpolar deep water-borne detritus to the glacial SE Atlantic Ocean
BT 
AF BAYON, Germain
   GERMAN, CR
   NESBITT, RW
   BERTRAND, P
   SCHNEIDER, RR
AS 1:;2:;3:;4:;5:;
FF 1:PDG-DRO-GM-GEOCHIMIE;2:;3:;4:;5:;
C1 Southampton Oceanog Ctr, Southampton SO14 3ZH, Hants, England.
   Univ Bordeaux 1, Dept Geol & Oceanog, CNRS, UMR 5805, F-33405 Talence, France.
   Univ Bremen, Fachbereich Geowissensch, D-28359 Bremen, Germany.
C2 SOUTHAMPTON OCEANOG CTR, ENGLAND
   UNIV BORDEAUX 1, FRANCE
   UNIV BREMEN, GERMANY
SI BREST
SE PDG-DRO-GM-GEOCHIMIE
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-univ-france
IF 2.623
TC 21
TU Centre national de la recherche scientifique
   Université de Bordeaux
   École pratique des hautes études
UR https://archimer.ifremer.fr/doc/00000/10190/9912.pdf
LA English
DT Article
CR NAUSICAA-IMAGES 2-MD105
BO Marion Dufresne
DE ;neodymium isotopes;detrital fractions;South Atlantic;deep water circulation;IMAGES;marine geology and geophysics : marine sediments processes and transport;oceanography : general : paleoceanography
AB [1] Analysis of radiogenic isotopes in marine sediments can provide useful information on the provenance and transport of detrital material, directly relevant to paleoceanographic investigations. Here we show that the detrital Nd isotopic composition of recent SE Atlantic marine sediments matches the complex modern-day hydrography. In these same cores, glacial-interglacial isotopic variations are consistent with previous investigations (using different paleoceanographic proxies), which have shown that the relative influence of North Atlantic Deep Water (NADW) into the South Atlantic was reduced during glacial periods. In a novel departure, however, we also calculate the mass accumulation rates of terrigenous material delivered by each of Circumpolar Deep Water (CDW) and NADW to demonstrate that the accumulation of detritus delivered by CDW was enhanced significantly in the glacial South Atlantic. This enhanced transport flux could be explained by an increased flow of CDW into the glacial South Atlantic and/or an increased concentration of suspended terrigenous material transported by glacial CDW.
PY 2003
PD MAR
SO Geochemistry Geophysics Geosystems
SN 1525-2027
PU Amer Geophysical Union
VL 4
UT 000181397000002
DI 10.1029/2002GC000371
ID 10190
ER

EF