Putative fossils of chemotrophic microbes preserved in seep carbonates from Vestnesa Ridge, off northwest Svalbard, Norway

The microbial key players at methane seeps are methanotrophic archaea and sulfate-reducing bacteria. They form spherical aggregates and jointly mediate the sulfate-dependent anaerobic oxidation of methane (SD-AOM: CH4 + SO42- → HCO3- + HS- + H2O), thereby inducing the precipitation of authigenic see...

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Veröffentlicht in:	Geology (Boulder) 2022-02, Vol.50 (2), p.169-173
Hauptverfasser:	Himmler, Tobias, Cremiere, Antoine, Birgel, Daniel, Wirth, Richard, Orphan, Victoria J, Kirsimae, Kalle, Knies, Jochen, Peckmann, Jörn, Lepland, Aivo
Format:	Artikel
Sprache:	eng
Schlagworte:	Aggregates Aragonite Archaea Archives Arctic Ocean Arctic region Bacteria Biomarkers C-13/C-12 Calcite Carbon Carbon sources carbonate sediments Carbonates Cenozoic chemical composition Chemical precipitation Clusters cold seeps Crystals Depletion Diameters EDS spectra Electron microscopy electron microscopy data Fossils Geochemistry Geofag: 450 Geology Geosciences: 450 isotope ratios isotopes Lipids marine environment marine sediments Matematikk og Naturvitenskap: 400 Mathematics and natural science: 400 Methane Microorganisms microstructure morphology Oxidation paleoenvironment Paleontology Pleistocene preservation Quaternary sediments Seepages SEM data spectra Spheres stable isotopes Sulfate reduction Sulfate-reducing bacteria Sulfates Sulphate reduction Svalbard TEM data Transmission electron microscopy upper Pleistocene VDP Vestnesa Ridge X-ray diffraction data X-ray spectra
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