Articles | Volume 20, issue 2
Research article
28 Feb 2024
Research article |  | 28 Feb 2024

Astronomically paced climate and carbon cycle feedbacks in the lead-up to the Late Devonian Kellwasser Crisis

Nina M. A. Wichern, Or M. Bialik, Theresa Nohl, Lawrence M. E. Percival, R. Thomas Becker, Pim Kaskes, Philippe Claeys, and David De Vleeschouwer

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Cited articles

Ait-Itto, F.-Z., Martinez, M., Deconinck, J.-F., and Bodin, S.: Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian–Albian), Vocontian Basin, France, Cretaceous Res., 150, 105618,, 2023. 
Alekseeva, T., Kabanov, P., Alekseev, A., Kalinin, P., and Alekseeva, V.: Characteristics of early Earth's critical zone based on middle–late Devonian paleosol properties (Voronezh high, Russia), Clays Clay Miner., 64, 677–694,, 2016. 
Algeo, T. J. and Scheckler, S. E.: Terrestrial-marine teleconnections in the Devonian: links between the evolution of land plants, weathering processes, and marine anoxic events, Philos. T. R. Soc. B, 353, 113–130,, 1998. 
Algeo, T. J., Berner, R. A., Maynard, J. B., and Scheckler, S. E.: Late Devonian oceanic anoxic events and biotic crises: “rooted” in the evolution of vascular land plants?, GSA Today, 5, 45–66, 1995.  
Algeo, T. J., Scheckler, S. E., and Maynard, J. B.: 12. Effects of the Middle to Late Devonian Spread of Vascular Land Plants on Weathering Regimes, Marine Biotas, and Global Climate, in: Plants Invade the Land, edited by: Gensel, P. G. and Edwards, D., Columbia University Press, 213–236,, 2001. 
Short summary
Middle–Late Devonian sedimentary rocks are often punctuated by anoxic black shales. Due to their semi-regular nature, anoxic events may be linked to periodic changes in the Earth’s climate caused by astronomical forcing. We use portable X-ray fluorescence elemental records, measured on marine sediments from Germany, to construct an astrochronological framework for the Kellwasser ocean anoxic Crisis. Results suggest that the Upper Kellwasser event was preceded by a specific orbital configuration.