Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton
Sulfur mass-independent fractionation (S-MIF) preserved in Archean sedimentary pyrite is interpreted to reflect atmospheric chemistry. Small ranges in Δ33S that expanded into larger fractionations leading up to the Great Oxygenation Event (GOE; 2.45–2.2 Ga) are disproportionately represented by sequ...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987121001146 |
| _version_ | 1797761693917380608 |
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| author | Alice Bosco-Santos William Patrick Gilhooly III Paola de Melo-Silva Fotios Fouskas Amaury Bouyon João Gabriel Motta Mauricio Rigoni Baldim Wendell Fabricio-Silva Pascal Philippot Elson Paiva Oliveira |
| author_facet | Alice Bosco-Santos William Patrick Gilhooly III Paola de Melo-Silva Fotios Fouskas Amaury Bouyon João Gabriel Motta Mauricio Rigoni Baldim Wendell Fabricio-Silva Pascal Philippot Elson Paiva Oliveira |
| author_sort | Alice Bosco-Santos |
| collection | DOAJ |
| description | Sulfur mass-independent fractionation (S-MIF) preserved in Archean sedimentary pyrite is interpreted to reflect atmospheric chemistry. Small ranges in Δ33S that expanded into larger fractionations leading up to the Great Oxygenation Event (GOE; 2.45–2.2 Ga) are disproportionately represented by sequences from the Kaapvaal and Pilbara Cratons. These patterns of S-MIF attenuation and enhancement may differ from the timing and magnitude of minor sulfur isotope fractionations reported from other cratons, thus obscuring local for global sulfur cycling dynamics. By expanding the Δ33S record to include the relatively underrepresented São Francisco Craton in Brazil, we suggest that marine biogeochemistry affected S-MIF preservation prior to the GOE. In an early Neoarchean sequence (2763–2730 Ma) from the Rio das Velhas Greenstone Belt, we propose that low δ13Corg (<−30‰) and dampened Δ33S (0.4‰ to −0.7‰) in banded iron formation reflect the marine diagenetic process of anaerobic methane oxidation. The overlying black shale (TOC up to 7.8%) with higher δ13Corg (−33.4‰ to −19.2‰) and expanded Δ33S (2.3‰ ± 0.8‰), recorded oxidative sulfur cycling that resulted in enhance preservation of S-MIF input from atmospheric sources of elemental sulfur. The sequence culminates in a metasandstone, where concomitant changes to more uniform δ13Corg (−30‰ to −25‰), potentially associated with the RuBisCO I enzyme, and near-zero Δ33S (−0.04‰ to 0.38‰) is mainly interpreted as evidence for local oxygen production. When placed in the context of other sequences worldwide, the Rio das Velhas helps differentiate the influences of global atmospheric chemistry and local marine diagenesis in Archean biogeochemical processes. Our data suggest that prokaryotic sulfur, iron, and methane cycles might have an underestimated role in pre-GOE sulfur minor isotope records. |
| first_indexed | 2024-03-12T19:17:43Z |
| format | Article |
| id | doaj.art-2857786d745f4d108e181b45a0ab2bbe |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T19:17:43Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-2857786d745f4d108e181b45a0ab2bbe2023-08-02T05:25:04ZengElsevierGeoscience Frontiers1674-98712022-09-01135101250Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco CratonAlice Bosco-Santos0William Patrick Gilhooly III1Paola de Melo-Silva2Fotios Fouskas3Amaury Bouyon4João Gabriel Motta5Mauricio Rigoni Baldim6Wendell Fabricio-Silva7Pascal Philippot8Elson Paiva Oliveira9Department of Geology and Natural Resources, University of Campinas, Campinas, SP 13083855, Brazil; Department of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USA; Corresponding author at: Department of Geology and Natural Resources, University of Campinas, Campinas, SP 13083855, Brazil.Department of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USADepartment of Geology and Natural Resources, University of Campinas, Campinas, SP 13083855, BrazilDepartment of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USAInstitut de Physique du Globe de Paris, Université de Paris, CNRS-UMR 7154, 75005 Paris Cedex 05, FranceDepartment of Geology and Natural Resources, University of Campinas, Campinas, SP 13083855, Brazil; Vizlab - X-Reality and GeoInformatics Lab, UNISINOS, São Leopoldo, RS 93022-750, BrazilGeosciences Department, Federal University of Mato Grosso, Cuiabá, MT, BrazilGeosciences Institute, University of Brasilia, Brasília, Distrito Federal 70910-900, Brazil; Institute of Geography and Geology, University of Würzburg, 97074 Würzburg, GermanyInstitut de Physique du Globe de Paris, Université de Paris, CNRS-UMR 7154, 75005 Paris Cedex 05, France; Géosciences Montpellier, Université de Montpellier, CNRS, Université des Antilles, Montpellier, France; Institute of Astronomy, Geophysics, and Atmospheric Sciences, University of São Paulo, Rua do Matão 1226, São Paulo, BrazilDepartment of Geology and Natural Resources, University of Campinas, Campinas, SP 13083855, BrazilSulfur mass-independent fractionation (S-MIF) preserved in Archean sedimentary pyrite is interpreted to reflect atmospheric chemistry. Small ranges in Δ33S that expanded into larger fractionations leading up to the Great Oxygenation Event (GOE; 2.45–2.2 Ga) are disproportionately represented by sequences from the Kaapvaal and Pilbara Cratons. These patterns of S-MIF attenuation and enhancement may differ from the timing and magnitude of minor sulfur isotope fractionations reported from other cratons, thus obscuring local for global sulfur cycling dynamics. By expanding the Δ33S record to include the relatively underrepresented São Francisco Craton in Brazil, we suggest that marine biogeochemistry affected S-MIF preservation prior to the GOE. In an early Neoarchean sequence (2763–2730 Ma) from the Rio das Velhas Greenstone Belt, we propose that low δ13Corg (<−30‰) and dampened Δ33S (0.4‰ to −0.7‰) in banded iron formation reflect the marine diagenetic process of anaerobic methane oxidation. The overlying black shale (TOC up to 7.8%) with higher δ13Corg (−33.4‰ to −19.2‰) and expanded Δ33S (2.3‰ ± 0.8‰), recorded oxidative sulfur cycling that resulted in enhance preservation of S-MIF input from atmospheric sources of elemental sulfur. The sequence culminates in a metasandstone, where concomitant changes to more uniform δ13Corg (−30‰ to −25‰), potentially associated with the RuBisCO I enzyme, and near-zero Δ33S (−0.04‰ to 0.38‰) is mainly interpreted as evidence for local oxygen production. When placed in the context of other sequences worldwide, the Rio das Velhas helps differentiate the influences of global atmospheric chemistry and local marine diagenesis in Archean biogeochemical processes. Our data suggest that prokaryotic sulfur, iron, and methane cycles might have an underestimated role in pre-GOE sulfur minor isotope records.http://www.sciencedirect.com/science/article/pii/S1674987121001146S-MIF preservationArchean atmospheric chemistryGOESão Francisco Craton |
| spellingShingle | Alice Bosco-Santos William Patrick Gilhooly III Paola de Melo-Silva Fotios Fouskas Amaury Bouyon João Gabriel Motta Mauricio Rigoni Baldim Wendell Fabricio-Silva Pascal Philippot Elson Paiva Oliveira Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton Geoscience Frontiers S-MIF preservation Archean atmospheric chemistry GOE São Francisco Craton |
| title | Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton |
| title_full | Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton |
| title_fullStr | Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton |
| title_full_unstemmed | Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton |
| title_short | Neoarchean atmospheric chemistry and the preservation of S-MIF in sediments from the São Francisco Craton |
| title_sort | neoarchean atmospheric chemistry and the preservation of s mif in sediments from the sao francisco craton |
| topic | S-MIF preservation Archean atmospheric chemistry GOE São Francisco Craton |
| url | http://www.sciencedirect.com/science/article/pii/S1674987121001146 |
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