Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Source at: http://doi.org/10.1016/j.chemgeo.2018.09.025 The exceptionally organic-rich rocks of the 1.98 Ga Zaonega Formation deposited in the Onega Basin, NW Russia, have refined our understanding of Earth System evolution during the Paleoprote...
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Online Access: | https://hdl.handle.net/10037/15115 https://doi.org/10.1016/j.chemgeo.2018.09.025 |
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ftunivtroemsoe:oai:munin.uit.no:10037/15115 2023-05-15T14:27:27+02:00 Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia Paiste, Kärt Lepland, Aivo Zerkle, A.L. Kirsimäe, Kalle Izon, G. Patel, N.K. McLean, F. Kreitsmann, T. Mänd, Kaarel Bui, T.H. Romashkin, Alexander E. Rychanchik, Dimitry V. Prave, Anthony R 2018-09-19 https://hdl.handle.net/10037/15115 https://doi.org/10.1016/j.chemgeo.2018.09.025 eng eng Elsevier Chemical Geology info:eu-repo/grantAgreement/RCN/SFF/223259/Norwat/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Paiste, K., Lepland, A., Zerkle, A., Kirsimäe, K., Izon, G., Patel, N. K., . Prave, A. R. (2018). Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia. Chemical Geology , 499, 151-164. http://doi.org/10.1016/j.chemgeo.2018.09.025 FRIDAID 1618622 doi:10.1016/j.chemgeo.2018.09.025 0009-2541 1872-6836 https://hdl.handle.net/10037/15115 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1016/j.chemgeo.2018.09.025 2021-06-25T17:56:21Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. Source at: http://doi.org/10.1016/j.chemgeo.2018.09.025 The exceptionally organic-rich rocks of the 1.98 Ga Zaonega Formation deposited in the Onega Basin, NW Russia, have refined our understanding of Earth System evolution during the Paleoproterozoic rise in atmospheric oxygen. These rocks were formed in vent- or seep influenced settings contemporaneous with voluminous mafic volcanism and contain strongly 13 C-depleted organic matter. Here we report new isotopic (δ 34 S, Δ 33 S, Δ 36 S, δ 13 C org ) and mineralogical, major element, total sulphur and organic carbon data for the upper part of the Zaonega Formation, which was deposited shortly after the termination of the Lomagundi-Jatuli positive carbon isotope excursion. The data were collected on a recently obtained 102 m drillcore section and show a δ 13 C org shift from -38‰ to -25‰. Sedimentary sulphides have δ 34 S values typically between +15‰ and +25‰ reflecting closed-system sulphur isotope behaviour driven by high rates of microbial sulphate reduction, high sulphate demand, hydrothermal activity and hydrocarbon seepage. Four intervals record δ 34 S values that exceed +30‰. We interpret these unusually 34 S-enriched sulphides to be a result of limited sulfate diffusion into pore waters due to changes in sedimentation and/or periods of basinal restriction. Additionally, there are four negative δ 34 S and positive Δ 33 S excursions that are interpreted to reflect changes in the open/closed-system behaviour of sulphate reduction or availability of reactive iron. Our findings highlight the influence of basinal processes in regulating sulphur isotope records and the need for care before interpreting such signals as reflecting global conditions. Article in Journal/Newspaper Arctic University of Tromsø: Munin Open Research Archive Onega ENVELOPE(38.100,38.100,63.900,63.900) Chemical Geology 499 151 164 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 Paiste, Kärt Lepland, Aivo Zerkle, A.L. Kirsimäe, Kalle Izon, G. Patel, N.K. McLean, F. Kreitsmann, T. Mänd, Kaarel Bui, T.H. Romashkin, Alexander E. Rychanchik, Dimitry V. Prave, Anthony R Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. Source at: http://doi.org/10.1016/j.chemgeo.2018.09.025 The exceptionally organic-rich rocks of the 1.98 Ga Zaonega Formation deposited in the Onega Basin, NW Russia, have refined our understanding of Earth System evolution during the Paleoproterozoic rise in atmospheric oxygen. These rocks were formed in vent- or seep influenced settings contemporaneous with voluminous mafic volcanism and contain strongly 13 C-depleted organic matter. Here we report new isotopic (δ 34 S, Δ 33 S, Δ 36 S, δ 13 C org ) and mineralogical, major element, total sulphur and organic carbon data for the upper part of the Zaonega Formation, which was deposited shortly after the termination of the Lomagundi-Jatuli positive carbon isotope excursion. The data were collected on a recently obtained 102 m drillcore section and show a δ 13 C org shift from -38‰ to -25‰. Sedimentary sulphides have δ 34 S values typically between +15‰ and +25‰ reflecting closed-system sulphur isotope behaviour driven by high rates of microbial sulphate reduction, high sulphate demand, hydrothermal activity and hydrocarbon seepage. Four intervals record δ 34 S values that exceed +30‰. We interpret these unusually 34 S-enriched sulphides to be a result of limited sulfate diffusion into pore waters due to changes in sedimentation and/or periods of basinal restriction. Additionally, there are four negative δ 34 S and positive Δ 33 S excursions that are interpreted to reflect changes in the open/closed-system behaviour of sulphate reduction or availability of reactive iron. Our findings highlight the influence of basinal processes in regulating sulphur isotope records and the need for care before interpreting such signals as reflecting global conditions. |
format |
Article in Journal/Newspaper |
author |
Paiste, Kärt Lepland, Aivo Zerkle, A.L. Kirsimäe, Kalle Izon, G. Patel, N.K. McLean, F. Kreitsmann, T. Mänd, Kaarel Bui, T.H. Romashkin, Alexander E. Rychanchik, Dimitry V. Prave, Anthony R |
author_facet |
Paiste, Kärt Lepland, Aivo Zerkle, A.L. Kirsimäe, Kalle Izon, G. Patel, N.K. McLean, F. Kreitsmann, T. Mänd, Kaarel Bui, T.H. Romashkin, Alexander E. Rychanchik, Dimitry V. Prave, Anthony R |
author_sort |
Paiste, Kärt |
title |
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
title_short |
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
title_full |
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
title_fullStr |
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
title_full_unstemmed |
Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia |
title_sort |
multiple sulphur isotope records tracking basinal and global processes in the 1.98 ga zaonega formation, nw russia |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/15115 https://doi.org/10.1016/j.chemgeo.2018.09.025 |
long_lat |
ENVELOPE(38.100,38.100,63.900,63.900) |
geographic |
Onega |
geographic_facet |
Onega |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Chemical Geology info:eu-repo/grantAgreement/RCN/SFF/223259/Norwat/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Paiste, K., Lepland, A., Zerkle, A., Kirsimäe, K., Izon, G., Patel, N. K., . Prave, A. R. (2018). Multiple sulphur isotope records tracking basinal and global processes in the 1.98 Ga Zaonega Formation, NW Russia. Chemical Geology , 499, 151-164. http://doi.org/10.1016/j.chemgeo.2018.09.025 FRIDAID 1618622 doi:10.1016/j.chemgeo.2018.09.025 0009-2541 1872-6836 https://hdl.handle.net/10037/15115 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.chemgeo.2018.09.025 |
container_title |
Chemical Geology |
container_volume |
499 |
container_start_page |
151 |
op_container_end_page |
164 |
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1766301195860705280 |