ArticleNature communications2021
Upper limits on the extent of seafloor anoxia during the PETM from uranium isotopes.
Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed.
- Cooling-induced intensification of ocean anoxia in the mid-Paleozoic.Science advances · 2026Article
- Changes in continental weathering regimes inhibited global marine deoxygenation during the Paleocene-Eocene thermal maximum.Nature communications · 2025Article
- Repeated occurrences of marine anoxia under high atmospheric OProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Carbonate uranium isotopes record global expansion of marine anoxia during the Toarcian Oceanic Anoxic Event.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- The evolution of Earth's surficial Mg cycle over the past 2 billion years.Science advances · 2024Article
- Enhanced phosphorus recycling during past oceanic anoxia amplified by low rates of apatite authigenesis.Science advances · 2022Article
- Marine anoxia linked to abrupt global warming during Earth's penultimate icehouse.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Isotopic filtering reveals high sensitivity of planktic calcifiers to Paleocene-Eocene thermal maximum warming and acidification.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Paleocene Eocene Thermal Maximum (PETM) represents a major carbon cycle and climate perturbation that was associated with ocean de-oxygenation, in a qualitatively similar manner to the more extensive Mesozoic Oceanic Anoxic Events. Although indicators of ocean de-oxygenation are common for the PETM, and linked to biotic turnover, the global extent and temporal progression of de-oxygenation is poorly constrained. Here we present carbonate associated uranium isotope data for the PETM. A lack of resolvable perturbation to the U-cycle during the event suggests a limited expansion of seafloor anoxia on a global scale. We use this result, in conjunction with a biogeochemical model, to set an upper limit on the extent of global seafloor de-oxygenation. The model suggests that the new U isotope data, whilst also being consistent with plausible carbon emission scenarios and observations of carbon cycle recovery, permit a maximum ~10-fold expansion of anoxia, covering <2% of seafloor area.
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Registered trials
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