FN Archimer Export Format
PT J
TI Formation of carbonate chimneys in the Mediterranean Sea linked to deep-water oxygen depletion
BT 
AF BAYON, Germain
   DUPRE, Stephanie
   PONZEVERA, Emmanuel
   ETOUBLEAU, Joel
   CHERON, Sandrine
   PIERRE, Catherine
   MASCLE, Jean
   BOETIUS, Antje
   DE LANGE, Gert J.
AS 1:1;2:1;3:1;4:1;5:1;6:2;7:3;8:4;9:5;
FF 1:PDG-REM-GM-LGM;2:PDG-REM-GM-LGG;3:PDG-REM-GM-LGM;4:PDG-REM-GM-LGM;5:PDG-REM-GM-LGM;6:;7:;8:;9:;
C1 IFREMER, Unite Rech Geosci Marines, F-29280 Plouzane, France.
   Univ Paris 06, LOCEAN, UMR 7159, F-75252 Paris 5, France.
   Univ Nice Sophia Antipolis, Observ Cote Azur, Geoazur, CNRS, F-06230 Villefranche Sur Mer, France.
   Max Planck Inst Marine Microbiol, HGF MPG Joint Res Grp Deep Sea Ecol & Technol, D-28359 Bremen, Germany.
   Univ Utrecht, Fac Geosci, Dept Earth Sci Geochem, NL-3584 CD Utrecht, Netherlands.
C2 IFREMER, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV NICE, FRANCE
   INST MAX PLANCK (MARINE MICROBIOL), GERMANY
   UNIV UTRECHT, NETHERLANDS
SI BREST
SE PDG-REM-GM-LGM
   PDG-REM-GM-LGG
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 11.668
TC 93
UR https://archimer.ifremer.fr/doc/00156/26734/24854.pdf
   https://archimer.ifremer.fr/doc/00156/26734/103527.pdf
LA English
DT Article
CR MIMES
BO Pelagia
AB Marine sediments at ocean margins vent substantial amounts of methane(1,2). Microbial oxidation of the methane released can trigger the precipitation of carbonate within sediments and support a broad diversity of seafloor ecosystems(3,4). The factors controlling microbial activity and carbonate precipitation associated with the seepage of submarine fluid over geological time remain poorly constrained. Here, we characterize the petrology and geochemistry of rocks sampled from metre-size build-ups of methane-derived carbonate chimneys located at the Amon mud volcano on the Nile deep-sea fan. We find that these carbonates comprise porous structures composed of aggregated spherules of aragonite, and closely resemble microbial carbonate reefs forming at present in the anoxic bottom waters of the Black Sea(5). Using U-series dating, we show that the Amon carbonate build-ups formed between 12 and 7 thousand years ago, contemporaneous with the deposition of organic-rich sediments in the eastern Mediterranean, the so-called sapropel layer S1. We propose that the onset of deep-water suboxic or anoxic conditions associated with sapropel formation resulted in the development of intense anaerobic microbial activity at the sea floor, and thus the formation of carbonate chimneys.
PY 2013
PD SEP
SO Nature Geoscience
SN 1752-0894
PU Nature Publishing Group
VL 6
IS 9
UT 000323717500019
BP 755
EP 760
DI 10.1038/NGEO1888
ID 26734
ER

EF