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Biological Carbon Precursor To Diagenetic Siderite With

  • The microbially driven formation of siderite in salt marsh ...

    The microbially driven formation of siderite in salt marsh ...

    of growth. What is interesting is that if diagenetic siderite formation is the dominant pathway to form siderite concretions, then they may reflect conditions within the sediment column rather than condi-tions related to the overall ocean–atmosphere system. Hence, study of the formation of siderite in the laboratory and in the natural en-

  • Anoxic photochemical oxidation of siderite generates ...

    Anoxic photochemical oxidation of siderite generates ...

    Jun 18, 2013 Photochemical reactions of minerals are underappreciated processes that can make or break chemical bonds. We report the photooxidation of siderite (FeCO3) by UV radiation to produce hydrogen gas and iron oxides via a two-photon reaction. The calculated quantum yield for the reaction suggests photooxidation of siderite would have been a significant source of molecular hydrogen for …

  • Tiny Talk 1A

    Tiny Talk 1A

    Biological Carbon Precursor to Diagenetic Siderite With Spherical Structures in Iron Formations _ Nature Communications _ Nature Publishing Group Studiul Zacamntului de Limonit Oolitic Si de Glauconit Din Formatiunile Eocene Ale Bazinului Transilvaniei I

  • Suboxic diagenesis in banded iron formations.

    Suboxic diagenesis in banded iron formations.

    May 01, 1984 Biological carbon precursor to diagenetic siderite with spherical structures in iron formations. K hler I, Konhauser KO, Papineau D, Bekker A, Kappler A. Nat Commun, 4:1741, 01 Jan 2013 Cited by: 8 articles | PMID: 23612282

  • Evidence for early life in Earth’s oldest hydrothermal ...

    Evidence for early life in Earth’s oldest hydrothermal ...

    Mar 02, 2017 However, because non-biological decarbonation reactions and Fischer-Tropsch-type synthesis 5 can produce reduced carbon with similar isotopic compositions, non-biological interpretations are ...

  • Simulating Precambrian banded iron formation diagenesis ...

    Simulating Precambrian banded iron formation diagenesis ...

    Dec 20, 2013 After 14 days, samples with excess carbon (ratio 2.4) formed siderite and magnetite (Fig. 3A). The siderite had globular structures similar but smaller than those in electron ratio 0.6 set-ups ... Biological carbon precursor to diagenetic siderite spherulites in banded iron formations. Nature Communications, 4 (2013), p. 1741.

  • ‪Dominic Papineau‬

    ‪Dominic Papineau‬

    Biological carbon precursor to diagenetic siderite with spherical structures in iron formations. I K hler, KO Konhauser, D Papineau, A Bekker, A Kappler. Nature Communications 4 (1), 1-7, 2013. 76: 2013: High primary productivity and nitrogen cycling after the Paleoproterozoic phosphogenic event in the Aravalli Supergroup, India.

  • Chemically

    Chemically

    Diagenetic spheroids in chert that 60 contain organic matter or microfossils thus provide a reliable petrographic context to 61 search for a record of putrefaction of microbial life on the early Earth and on other 62 ancient planetary surfaces. 63 64 Keywords: phosphorite, jasper, apatite, Proterozoic, organic matter, carbon isotopes,

  • Author's personal copy

    Author's personal copy

    4), and siderite (FeIICO 3). Silica-coated ferrihydrite prepared at conservative Si:Fe ratios (as predicted for the Precambrian oceans) and mixed with glucose yielded hematite and siderite, whereas magnetite could not be identi ed microscopically. Our results show that electron transfer from organic carbon to Fe(III) minerals during

  • Photoferrotrophy, deposition of banded iron formations ...

    Photoferrotrophy, deposition of banded iron formations ...

    Nov 01, 2019 Siderite can be an abundant component in many BIF (24, 25), and an example carbon isotope mass balance suggests that 30% of the siderite in BIFs can be diagenetic, with the balance likely representing a primary precipitate (Supplementary Materials). In our benchmark scenario (Supplementary Materials), where 15% of cells are associated with ...

  • Dominic Papineau

    Dominic Papineau

    Year Citation Score; 2013: K hler I, Konhauser KO, Papineau D, Bekker A, Kappler A. Biological carbon precursor to diagenetic siderite with spherical structures in iron formations.Nature Communications. 4: 1741.PMID 23612282 DOI: 10.1038/ncomms2770 : 0.32: 2009: Papineau D, Purohit R, Goldberg T, Pi D, Shields GA, Bhu H, Steele A, Fogel ML.High primary productivity and nitrogen …

  • The microbially driven formation of siderite in salt marsh ...

    The microbially driven formation of siderite in salt marsh ...

    of growth. What is interesting is that if diagenetic siderite formation is the dominant pathway to form siderite concretions, then they may reflect conditions within the sediment column rather than condi-tions related to the overall ocean–atmosphere system. Hence, study of the formation of siderite in the laboratory and in the natural en-

  • Kurt Konhauser | University of Alberta

    Kurt Konhauser | University of Alberta

    Biological carbon precursor to diagenetic siderite with spherical structures in iron formations more by Kurt Konhauser , Andreas Kappler , and Inga K hler Publication Date: 2013

  • CiteSeerX — Citation Query Extending the upper …

    CiteSeerX — Citation Query Extending the upper …

    Biological carbon precursor to diagenetic siderite with spherical structures in iron formations by Kurt O. Konhauser, Dominic Papineau, Andrey Bekker During deposition of Precambrian iron formation, the combined sedimentation of ferrihydrite and phytoplankton biomass should have facilitated Fe(III) reduction during diagenesis.

  • Chemistry Tree

    Chemistry Tree

    K hler I, Konhauser KO, Papineau D, et al. (2013) Biological carbon precursor to diagenetic siderite with spherical structures in iron formations. Nature Communications . 4: 1741 Papineau D, Purohit R, Goldberg T, et al. ( 2009 ) High primary productivity and nitrogen cycling after the Paleoproterozoic phosphogenic event in the Aravalli ...

  • Oceanic minerals: Their origin, nature of their ...

    Oceanic minerals: Their origin, nature of their ...

    Mar 30, 1999 This can cause the formation of rhodochrosite, ankerite, and/or siderite, respectively, instead of dolomite, in pore fluids with lowered Mg/Ca ( 1–2) from earlier carbonate and silicate diagenetic reactions. Because of the high Mg content in seawater siderite is less common as an authigenic oceanic mineral than in continental environments.

  • Minerals | Free Full

    Minerals | Free Full

    Banded iron formations (BIFs) are enigmatic chemical sedimentary rocks that chronicle the geochemical and microbial cycling of iron and carbon in the Precambrian. However, the formation pathways of Fe carbonate, namely siderite, remain disputed. Here, we provide photomicrographs, Fe, C and O isotope of siderite, and organic C isotope of the whole rock from the ~2.52 Ga Dagushan BIF in the ...

  • Earth and Planetary Science

    Earth and Planetary Science

    Evaluation of siderite and magnetite formation in BIFs by ... metamorphism of the precursor and diagenetic iron-rich minerals (ferrihydrite, goethite, hematite) at ... the carbon isotope composition of BIF siderite reveals enrichments of the light. 12. carbon isotope ( C) with respect to seawater-derived inorganic carbon, suggesting that C-

  • Microbial mineralization of organic matter

    Microbial mineralization of organic matter

    Diagenetic degradation of organic matter with geochemical and isotopic characteristics of diagenetic carbonates presence of Fe reaction symbol or Mn 613C mineralogy Mn(IV) reduction MnR yes -25 %o rhodocrosite Fe(III) reduction FeR yes -25 % siderite sulphate reduction SR no -25%, calcite or dolomite acetate Me yes + 15%, calcite, dolomite or ...

  • [PDF] Evaluation of siderite and magnetite formation in ...

    [PDF] Evaluation of siderite and magnetite formation in ...

    Abstract Anoxygenic phototrophic Fe(II)-oxidizing bacteria potentially contributed to the deposition of Archean banded iron formations (BIFs), before the evolution of cyanobacterially-generated molecular oxygen (O 2 ), by using sunlight to oxidize aqueous Fe(II) and precipitate Fe(III) (oxyhydr)oxides. Once deposited at the seafloor, diagenetic reduction of the Fe(III) (oxyhydr)oxides by ...

  • The microbially driven formation of siderite in salt marsh ...

    The microbially driven formation of siderite in salt marsh ...

    Dec 08, 2019 Furthermore, the nucleation pathway for siderite is unclear, for example, whether there is a less stable carbonate precursor to siderite such as amorphous calcium carbonate (ACC), amorphous iron (II) carbonate (AFC) (Dideriksen et al., 2015; Jiang & Tosca, 2019; Sel et al., 2012) or monohydrocalcite (MHC) and whether siderite (both nodular or ...

  • Dr. Inga Köhler

    Dr. Inga Köhler

    Oct 15, 2019 Biological carbon precursor to diagenetic siderite with spherical structures in iron formations. 2016 SPP Building a Habitable Earth Meeting in Cologne, Poster: DIfferent phases of carbonaceous matter in microbial mats of the Moodies Group in …