ArticleProceedings of the National Academy of Sciences of the United States of America2016
Cu isotopes in marine black shales record the Great Oxidation Event.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 118 citations in OpenAlex.
- Navigating Transition Metal-Dependent Cell Death: Mechanisms, Crosstalk, and Future Directions.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Review
- From Amino Acids to α-Keto Acids via β-Elimination and Transamination Initiates a Pathway to Prebiotic Reaction Networks.Angewandte Chemie (International ed. in English) · 2025Article
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- MRI guided copper deprivator activated immune responses and suppressed angiogenesis for enhanced antitumor immunotherapy.Theranostics · 2025Article
- Organic carbon cycling and black shale deposition: an Earth System Science perspective.National science review · 2023Article
- Expression Profiles of Cuproptosis-Related Genes Determine Distinct Subtypes of Pancreatic Ductal Adenocarcinoma.Current oncology (Toronto, Ont.) · 2023Article
- Heavy Metal Resistance Ability ofArchives of Razi Institute · 2022Article
- Comparisons of the Paleo-Mesoproterozoic large igneous provinces and black shales in the North China and North Australian cratons.Fundamental research · 2022Review
- Antimicrobial Activity of Metals and Metalloids.Annual review of microbiology · 2021Review
- Copper metabolism as a unique vulnerability in cancer.Biochimica et biophysica acta. Molecular cell research · 2021Review
- Recent advances in exploring the heavy metal(loid) resistant microbiome.Computational and structural biotechnology journal · 2021Review
- LipoproteinmBio · 2020Article
- The Archean atmosphere.Science advances · 2020Review
- Heavy Metal Toxicity in Armed Conflicts Potentiates AMR inFrontiers in microbiology · 2020Review
- Copper Isotope Ratio Measurements of Cu-Dominated Minerals Without Column Chromatography Using MC-ICP-MS.Frontiers in chemistry · 2020Article
- Copper-Induced Expression of a Transmissible Lipoprotein Intramolecular Transacylase Alters Lipoprotein Acylation and the Toll-Like Receptor 2 Response to Listeria monocytogenes.Journal of bacteriology · 2019Article
- Neoproterozoic copper cycling, and the rise of metazoans.Scientific reports · 2019Article
- Copper Metabolism of Newborns Is Adapted to Milk Ceruloplasmin as a Nutritive Source of Copper: Overview of the Current Data.Nutrients · 2018Review
- Nitrogen fixation sustained productivity in the wake of the Palaeoproterozoic Great Oxygenation Event.Nature communications · 2018Article
- Arsenic and high affinity phosphate uptake gene distribution in shallow submarine hydrothermal sediments.Biogeochemistry · 2018Article
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Authors and funding
9 authors at 6 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The oxygenation of the atmosphere ∼2.45-2.32 billion years ago (Ga) is one of the most significant geological events to have affected Earth's redox history. Our understanding of the timing and processes surrounding this key transition is largely dependent on the development of redox-sensitive proxies, many of which remain unexplored. Here we report a shift from negative to positive copper isotopic compositions (δ(65)CuERM-AE633) in organic carbon-rich shales spanning the period 2.66-2.08 Ga. We suggest that, before 2.3 Ga, a muted oxidative supply of weathering-derived copper enriched in (65)Cu, along with the preferential removal of (65)Cu by iron oxides, left seawater and marine biomass depleted in (65)Cu but enriched in (63)Cu. As banded iron formation deposition waned and continentally sourced Cu became more important, biomass sampled a dissolved Cu reservoir that was progressively less fractionated relative to the continental pool. This evolution toward heavy δ(65)Cu values coincides with a shift to negative sedimentary δ(56)Fe values and increased marine sulfate after the Great Oxidation Event (GOE), and is traceable through Phanerozoic shales to modern marine settings, where marine dissolved and sedimentary δ(65)Cu values are universally positive. Our finding of an important shift in sedimentary Cu isotope compositions across the GOE provides new insights into the Precambrian marine cycling of this critical micronutrient, and demonstrates the proxy potential for sedimentary Cu isotope compositions in the study of biogeochemical cycles and oceanic redox balance in the past.
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