Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows
Pyrite-δ(34)S and -δ(56)Fe isotopes represent highly sensitive diagnostic paleoenvironmental proxies that express high variability at the bed (< 10 mm) scale that has so far defied explanation by a single formative process. This study reveals for the first time the paleoenvironmental context of e...
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ftpubmed:oai:pubmedcentral.nih.gov:7679392 2023-05-15T15:41:21+02:00 Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows Harazim, Dario Virtasalo, Joonas J. Denommee, Kathryn C. Thiemeyer, Nicolas Lahaye, Yann Whitehouse, Martin J. 2020-11-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7679392/ http://www.ncbi.nlm.nih.gov/pubmed/33219284 https://doi.org/10.1038/s41598-020-76296-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7679392/ http://www.ncbi.nlm.nih.gov/pubmed/33219284 http://dx.doi.org/10.1038/s41598-020-76296-8 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-76296-8 2020-11-29T01:28:09Z Pyrite-δ(34)S and -δ(56)Fe isotopes represent highly sensitive diagnostic paleoenvironmental proxies that express high variability at the bed (< 10 mm) scale that has so far defied explanation by a single formative process. This study reveals for the first time the paleoenvironmental context of exceptionally enriched pyrite-δ(34)S and -δ(56)Fe in bioturbated, storm-reworked mudstones of an early Ordovician storm-dominated delta (Tremadocian Beach Formation, Bell Island Group, Newfoundland). Very few studies provide insight into the low-temperature sulfur and iron cycling from bioturbated muddy settings for time periods prior to the evolution of deep soil horizons on land. Secondary ion mass spectroscopy (SIMS) analyses performed on Beach Formation muddy storm event beds reveal spatially distinct δ(34)S and δ(56)Fe values in: (a) tubular biogenic structures and trails (δ(34)S ~ +40‰; δ(56)Fe ~ −0.5‰), (b) silt-filled Planolites burrows (δ(34)S ~ +40‰; δ(56)Fe ~ +0.5 to + 2.1‰), and (c) non-bioturbated mudstone (δ(34)S ~ +35‰; δ(56)Fe ~ +0.5‰). δ(34)S values of well above + 40.0‰ indicate at least some pyrite precipitation in the presence of a (34)S-depleted pore water sulfide reservoir, via closed system (Raleigh-type) fractionation. The preferential enrichment of (56)Fe in Planolites burrows is best explained via microbially-driven liberation of Fe(II) from solid iron parent phases and precipitation from a depleted (54)Fe dissolved Fe(II) reservoir. Rigorous sedimentological analysis represents a gateway to critically test the paleoenvironmental models describing the formation of a wide range of mudstones and elucidates the origins of variability in the global stable S and Fe isotope record. Text Bell Island Newfoundland PubMed Central (PMC) Bell Island ENVELOPE(-61.967,-61.967,-64.267,-64.267) Burrows ENVELOPE(163.650,163.650,-74.300,-74.300) Raleigh ENVELOPE(-55.731,-55.731,51.567,51.567) Scientific Reports 10 1 |
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Article Harazim, Dario Virtasalo, Joonas J. Denommee, Kathryn C. Thiemeyer, Nicolas Lahaye, Yann Whitehouse, Martin J. Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
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Article |
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Pyrite-δ(34)S and -δ(56)Fe isotopes represent highly sensitive diagnostic paleoenvironmental proxies that express high variability at the bed (< 10 mm) scale that has so far defied explanation by a single formative process. This study reveals for the first time the paleoenvironmental context of exceptionally enriched pyrite-δ(34)S and -δ(56)Fe in bioturbated, storm-reworked mudstones of an early Ordovician storm-dominated delta (Tremadocian Beach Formation, Bell Island Group, Newfoundland). Very few studies provide insight into the low-temperature sulfur and iron cycling from bioturbated muddy settings for time periods prior to the evolution of deep soil horizons on land. Secondary ion mass spectroscopy (SIMS) analyses performed on Beach Formation muddy storm event beds reveal spatially distinct δ(34)S and δ(56)Fe values in: (a) tubular biogenic structures and trails (δ(34)S ~ +40‰; δ(56)Fe ~ −0.5‰), (b) silt-filled Planolites burrows (δ(34)S ~ +40‰; δ(56)Fe ~ +0.5 to + 2.1‰), and (c) non-bioturbated mudstone (δ(34)S ~ +35‰; δ(56)Fe ~ +0.5‰). δ(34)S values of well above + 40.0‰ indicate at least some pyrite precipitation in the presence of a (34)S-depleted pore water sulfide reservoir, via closed system (Raleigh-type) fractionation. The preferential enrichment of (56)Fe in Planolites burrows is best explained via microbially-driven liberation of Fe(II) from solid iron parent phases and precipitation from a depleted (54)Fe dissolved Fe(II) reservoir. Rigorous sedimentological analysis represents a gateway to critically test the paleoenvironmental models describing the formation of a wide range of mudstones and elucidates the origins of variability in the global stable S and Fe isotope record. |
format |
Text |
author |
Harazim, Dario Virtasalo, Joonas J. Denommee, Kathryn C. Thiemeyer, Nicolas Lahaye, Yann Whitehouse, Martin J. |
author_facet |
Harazim, Dario Virtasalo, Joonas J. Denommee, Kathryn C. Thiemeyer, Nicolas Lahaye, Yann Whitehouse, Martin J. |
author_sort |
Harazim, Dario |
title |
Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
title_short |
Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
title_full |
Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
title_fullStr |
Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
title_full_unstemmed |
Exceptional sulfur and iron isotope enrichment in millimetre-sized, early Palaeozoic animal burrows |
title_sort |
exceptional sulfur and iron isotope enrichment in millimetre-sized, early palaeozoic animal burrows |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7679392/ http://www.ncbi.nlm.nih.gov/pubmed/33219284 https://doi.org/10.1038/s41598-020-76296-8 |
long_lat |
ENVELOPE(-61.967,-61.967,-64.267,-64.267) ENVELOPE(163.650,163.650,-74.300,-74.300) ENVELOPE(-55.731,-55.731,51.567,51.567) |
geographic |
Bell Island Burrows Raleigh |
geographic_facet |
Bell Island Burrows Raleigh |
genre |
Bell Island Newfoundland |
genre_facet |
Bell Island Newfoundland |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7679392/ http://www.ncbi.nlm.nih.gov/pubmed/33219284 http://dx.doi.org/10.1038/s41598-020-76296-8 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-76296-8 |
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