Climatic and tectonic controls on shallow-marine and freshwater diatomite deposition throughout the Palaeogene

Figus, Cécile; Bialik, Or M.; Gladenkov, Andrey Y.; Oreshkina, Tatyana V.; Renaudie, Johan; Smirnov, Pavel; Witkowski, Jakub

doi:https://doi.org/10.5194/cp-20-2629-2024

Articles | Volume 20, issue 11

https://doi.org/10.5194/cp-20-2629-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-20-2629-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 11

Research article

|

28 Nov 2024

Research article |

| 28 Nov 2024

Climatic and tectonic controls on shallow-marine and freshwater diatomite deposition throughout the Palaeogene

Cécile Figus, Or M. Bialik, Andrey Y. Gladenkov, Tatyana V. Oreshkina, Johan Renaudie, Pavel Smirnov, and Jakub Witkowski

Supplement

https://doi.org/10.5194/cp-20-2629-2024-supplement

Data sets

Compilation of Palaeogene shallow marine and freshwater diatomites (version 2) C. Figus et al. https://doi.org/10.5281/zenodo.12623792

Short summary

A global-scale compilation of Palaeogene diatomite occurrences shows how palaeogeographic and palaeoceanographic changes impacted diatom accumulation, especially in the middle Eocene. Diatomite deposition dropped in epicontinental seas between ~ 46 and ~ 44 Ma, while diatom accumulation began around 43.5 Ma in open-ocean settings. The compilation also shows an indirect correlation between Palaeogene climate fluctuations and diatomite deposition in shallow-marine and freshwater environments.