FN Archimer Export Format
PT J
TI On the early fate of hydrothermal iron at deep-sea vents: A reassessment after in situ filtration
BT 
AF WAELES, Mathieu
   COTTE, Laura
   PERNET-COUDRIER, Benoit
   CHAVAGNAC, V.
   CATHALOT, Cecile
   LELEU, T.
   LAES-HUON, Agathe
   PERHIRIN, Antoine
   RISO, R. D.
   SARRADIN, Pierre-Marie
AS 1:1;2:2;3:1;4:3;5:4;6:3;7:5;8:2;9:1;10:2;
FF 1:;2:PDG-REM-EEP-LEP;3:;4:;5:PDG-REM-GM-LCG;6:;7:PDG-REM-RDT-LDCM;8:PDG-REM-EEP-LEP;9:;10:PDG-REM-EEP;
C1 Univ Bretagne Occidental, LEMAR UMR CNRS 6539, IUEM, Plouzane, France.
   IFREMER, Environm Profond DEEP REM, ZI Pointe Diable, Plouzane, France.
   Univ Toulouse, Lab Geosci Environm Toulouse, GET UMR CNRS 5563, Toulouse, France.
   IFREMER, Geochim & Metallogenie GM REM, Plouzane, France.
   IFREMER, Lab Detect Capteurs & Mesures REM RDT, Plouzane, France.
C2 UBO, FRANCE
   IFREMER, FRANCE
   UNIV TOULOUSE, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-EEP-LEP
   PDG-REM-GM-LCG
   PDG-REM-RDT-LDCM
   PDG-REM-EEP
UM LEMAR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 4.339
TC 17
UR https://archimer.ifremer.fr/doc/00388/49944/50522.pdf
   https://archimer.ifremer.fr/doc/00388/49944/50523.pdf
   https://archimer.ifremer.fr/doc/00388/49944/50524.pdf
   https://archimer.ifremer.fr/doc/00388/49944/50525.xlsx
LA English
DT Article
CR BICOSE
   MOMARSAT2014
   MOMARSAT2015
BO Pourquoi pas ?
DE ;hydrothermal;iron;sulfide;venting;filtration;precipitation
AB Deep-sea hydrothermal venting is now recognized as a major source of iron (Fe), an essential trace element that controls marine productivity. However, the reactions occurring during dispersal from buoyant plumes to neutrally buoyant hydrothermal plumes are still poorly constrained. Here we report for the first time on the dissolved-particulate partition of Fe after in situ filtration at the early stage of mixing at different hydrothermal discharges, i.e., Lucky Strike (37 degrees N), TAG (26 degrees N), and Snakepit (23 degrees N) on the Mid-Atlantic Ridge. We found that hydrothermal iron is almost completely preserved (>90%) in the dissolved fraction, arguing for low iron-bearing sulfide precipitation of iron in basalt-hosted systems with low Fe:H2S ratios. This result can only be explained by a kinetically limited formation of pyrite. The small part of Fe being precipitated as sulfides in the mixing gradient (<10%) is restricted to the inclusion of Fe in minerals of high Cu and Zn content. We also show that secondary venting is a source of Fe-depleted hydrothermal solutions. These results provide new constrains on Fe fluxes from hydrothermal venting. 
PY 2017
PD MAY
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 44
IS 9
UT 000402143700032
BP 4233
EP 4240
DI 10.1002/2017GL073315
ID 49944
ER

EF