Cited by 180Paleontology and Stratigraphy of FossilsGeological and Geochemical AnalysisGeology and Paleoclimatology Research

Ocean redox structure across the Late Neoproterozoic Oxygenation Event: A nitrogen isotope perspective

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Ader, Magali, Sansjofre, Pierre, Halverson, Galen P., Busigny, Vincent, Trindade, Ricardo I.F., Kunzmann, Marcus, Nogueira, Afonso C.R.·2014·Earth and Planetary Science Letters

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Crossref · 10.1016/j.epsl.2014.03.042

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  • Spatial variation of δ15N values appears inconsistent with widespread N cycling in the late-Neoproterozoic ocean.

    “Spatial variation of δ15N values appears inconsistent with widespread N cycling in late-Neoproterozoic ocean25, 26.”

    From Heterogenous oceanic redox conditions through the Ediacaran-Cambrian boundary limited the metazoan zonation (2017) · cites this paper as [26]

    Section 5.2 interprets the late-Neoproterozoic δ15N distribution as evidence for a nitrogen cycle similar to the modern ocean’s, with nitrate stable throughout most of the ocean. The Conclusions likewise say the global nitrogen cycle operated similarly to today’s. The paper argues against a globally redox-stratified ocean, not against widespread nitrogen cycling. (LLM, conf=0.88)

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  • The low δ15N values in the Nangao section originated from primary producers utilizing 15N-depleted NH4+, consistent with oceanic redox structure associated with OAEs.

    “Rather, such low values have originated from primary producers utilizing 15N-depleted NH4 +, a process consistent with what is known of oceanic redox structure associated with the OAEs26, 28.”

    From Heterogenous oceanic redox conditions through the Ediacaran-Cambrian boundary limited the metazoan zonation (2017) · cites this paper as [26]

    Section 1.2 (page unavailable) says that ammonium assimilation by primary producers under a shallow redox transition zone can produce negative δ15N values, as proposed for OAE2. Section 5.2 (page unavailable) also links low δ15N values during OAEs to redox stratification. The paper does not examine the Nangao section or establish that its producers used 15N-depleted NH4+, so it supports the proposed mechanism, not that site-specific conclusion. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Assimilation of N2 into organic matter by N-fixation is accompanied by fractionation of as much as −4‰.

    “Assimilation of N2 into organic matter by N-fixation is accompanied by fractionation of as much as −4‰26.”

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1 of the 158 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [93]93. Sansofre, P., 2011. L'environnement post-marinoen (ca. 635 ma) : une étude multi-proxy de la plateforme carbonatée du Groupe d'Araras (Mato Grosso, Brésil). PhD thesis, Université Paris- Diderot, pp 287.

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Authors
Ader, M., Sansjofre, P., Halverson, G. P., Busigny, V., Trindade, R. I. F., Kunzmann, M., & Nogueira, A. C. R.
Affiliations
  • Institut de physique du globe de Paris (FR)
  • Geotop (CA)
Venue
Earth and Planetary Science Letters
Publisher
Elsevier BV
Published
2014-06
Volume
396
Pages
1-13
ISSN
0012-821X (ISSN-L)
OpenAlex
W1977990865
Cited by
180
References
158
Citations by year
2026: 11 · 2025: 18 · 2024: 28 · 2023: 11 · 2022: 15 · 2021: 20 · 2020: 12 · 2019: 15 · 2018: 13 · 2017: 12 · 2016: 10 · 2015: 13 · 2014: 1
FWCI
8.77
Type
journal article
Language
en
Open access
Locations
  • Earth and Planetary Science Letters (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Fundação de Amparo à Pesquisa do Estado de São Paulo
  • American Chemical Society Petroleum Research Fund
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
Keywords
nitrogen isotopes, ocean anoxia, atmospheric oxygenation, paleoceanography, Neoproterozoic

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