Articles | Volume 20, issue 11
https://doi.org/10.5194/cp-20-2629-2024
https://doi.org/10.5194/cp-20-2629-2024
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

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Cited articles

Akhmetiev, M. A., Zaporozhets, N. I., Iakovleva, A. I., Aleksandrova, G. N., Beniamovsky, V. N., Oreshkina, T. V., Gnibidenko, Z. N., and Dolya, Z. A.: Comparative analysis of marine paleogene sections and biota from West Siberia and the Arctic Region, Stratigr. Geol. Correl., 18, 635–659, https://doi.org/10.1134/S0869593810060043, 2010. a
Akhmetiev, M. A., Zaporozhets, N. I., Benyamovskiy, V. N., Aleksandrova, G. N., Iakovleva, A. I., and Oreshkina, T. V.: The Paleogene history of the Western Siberian seaway – a connection of the Peri-Tethys to the Arctic ocean, Aust. J. Earth Sci., 105, 50–67, 2012. a
Aleksandrova, G. N., Beniamovski, V. N., Zaporozhets, N. I., Zastrozhnov, A. S., Zastrozhnov, S. I., Tabachnikova, I. P., Oreshkina, T. V., and Zakrevskaya, E. Y.: Paleogene of the southwestern Volgograd region (Borehole 13, Gremyach'e Area). 1. Biostratigraphy, Stratigr. Geol. Correl., 19, 310–336, https://doi.org/10.1134/S0869593811030014, 2011. a
Amon, E. O.: Factors and conditions of accumulation of Paleogene biogenic silicates in Western Siberia, Bull. Soc. Nat. Moscou, 93, 51–67, 2018. a, b
Anagnostou, E., John, E. H., Edgar, K. M., Foster, G. L., Ridgwell, A., Inglis, G. N., Pancost, R. D., Lunt, D. J., and Pearson, P. N.: Changing atmospheric CO2 concentration was the primary driver of early Cenozoic climate, Nature, 9533, 380–384, https://doi.org/10.1038/nature17423, 2016. a
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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.
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