Articles | Volume 18, issue 9
https://doi.org/10.5194/cp-18-1963-2022
https://doi.org/10.5194/cp-18-1963-2022
Research article
 | 
01 Sep 2022
Research article |  | 01 Sep 2022

Clumped-isotope-derived climate trends leading up to the end-Cretaceous mass extinction in northwestern Europe

Heidi E. O'Hora, Sierra V. Petersen, Johan Vellekoop, Matthew M. Jones, and Serena R. Scholz

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Cited articles

Anderson, N. T., Kelson, J. R., Kele, S., Daëron, M., Bonifacie, M., Horita, J., Mackey, T. J., John, C. M., Kluge, T., Petschnig, P., Jost, A. B., Huntington, K. W., Bernasconi, S. M., and Bergmann, K. D.: A unified clumped isotope thermometer calibration (0.5–1000 C) using carbonate-based standardization, Geophys. Res. Lett., 48, e2020GL092069, https://doi.org/10.1029/2020GL092069, 2021. 
Barnet, J. S. K., Littler, K., Westerhold, T., Kroon, D., Leng, M. J., Bailey, I., Röhl, U., and Zachos, J. C.: A High-fidelity benthic stable isotope record of Late Cretaceous–Early Eocene climate change and carbon-cycling, Paleoceanogr. Paleoclimatol., 34, 672–691, https://doi.org/10.1029/2019PA003556, 2019. 
Bernasconi, S. M., Mueller, I., Bergmann, K. D., Breitenbach, S. F. M., Fernandez, A., Hodell, D. A., Jaggi, M., Meckler, A.N., Millan, I., and Ziegler, M.,: Reducing uncertainties in carbonate clumped isotope analysis through consistent carbonate-based standardization, Geochem. Geophy. Geosy., 19, 2895–2914, https://doi.org/10.1029/2017GC007385, 2018. 
Bernasconi, S. M., Daëron, M., Bergmann, K. D., Bonifacie, M., Meckler, A. N., Affek, H. P., Anderson, N., Bajnai, D., Barkan, E., Beverly, E., and Blamart, D.: InterCarb: A community effort to improve interlaboratory standardization of the carbonate clumped isotope thermometer using carbonate standards, Geochem. Geophy. Geosy., 22, e2020GC009588, https://doi.org/10.1029/2020GC009588, 2021. 
Bless, M. J. M.: Possible causes for the change in ostracod assemblages at the Maastrichtian-Palaeocene boundary in southern Limburg, The Netherlands, Meded. Werkgr. Tert. Kwart. Geol., 25, 197–211, 1988. 
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At the end of the Cretaceous period, massive volcanism in India emitted enough carbon dioxide into the atmosphere to warm the climate globally above an already warm background state. We reconstruct late Cretaceous seawater temperatures much warmer than today using the chemistry of fossil oysters from the modern-day Netherlands and Belgium. Covariations in temperature and water chemistry indicate changing ocean circulation patterns, potentially related to fluctuating sea level in this region.
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