Biogeosciences
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Articles | Volume 22, issue 12
Articles | Volume 22, issue 12
https://doi.org/10.5194/bg-22-3029-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-3029-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 12
Research article
 | 
30 Jun 2025
Research article |  | 30 Jun 2025

Controls on Palaeogene deep-sea diatom-bearing sediment deposition and comparison with shallow marine environments

Cécile Figus, Johan Renaudie, Or M. Bialik, and Jakub Witkowski

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Short summary
The synthesis of Palaeogene deep-sea diatom-bearing sediment occurrences indicates that the deposition of diatom-bearing sediments is mainly controlled by nutrient availability and ocean circulation in the Atlantic, Pacific, and Indian oceans. Comparison with shallow marine diatomites suggests that the peak in the number of diatom-bearing sites in the Atlantic is indirectly related to tectonic reorganizations that caused the cessation of shallow marine diatomite deposition between ~46 and ~44 Ma.
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