Articles | Volume 18, issue 3
Research article
04 Mar 2022
Research article |  | 04 Mar 2022

Clumped isotope evidence for Early Jurassic extreme polar warmth and high climate sensitivity

Thomas Letulle, Guillaume Suan, Mathieu Daëron, Mikhail Rogov, Christophe Lécuyer, Arnauld Vinçon-Laugier, Bruno Reynard, Gilles Montagnac, Oleg Lutikov, and Jan Schlögl

Related authors

Multi-proxy assessment of brachiopod shell calcite as a potential archive of seawater temperature and oxygen isotope composition
Thomas Letulle, Danièle Gaspard, Mathieu Daëron, Florent Arnaud-Godet, Arnauld Vinçon-Laugier, Guillaume Suan, and Christophe Lécuyer
Biogeosciences, 20, 1381–1403,,, 2023
Short summary

Related subject area

Subject: Proxy Use-Development-Validation | Archive: Marine Archives | Timescale: Pre-Cenozoic
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
Clim. Past, 18, 1963–1982,,, 2022
Short summary
Technical note: Lithium isotopes in dolostone as a palaeo-environmental proxy – an experimental approach
Holly L. Taylor, Isaac J. Kell Duivestein, Juraj Farkas, Martin Dietzel, and Anthony Dosseto
Clim. Past, 15, 635–646,,, 2019
Short summary
An assessment of latest Cretaceous Pycnodonte vesicularis (Lamarck, 1806) shells as records for palaeoseasonality: a multi-proxy investigation
Niels J. de Winter, Johan Vellekoop, Robin Vorsselmans, Asefeh Golreihan, Jeroen Soete, Sierra V. Petersen, Kyle W. Meyer, Silvio Casadio, Robert P. Speijer, and Philippe Claeys
Clim. Past, 14, 725–749,,, 2018
Short summary
Climate variability and ocean fertility during the Aptian Stage
C. Bottini, E. Erba, D. Tiraboschi, H. C. Jenkyns, S. Schouten, and J. S. Sinninghe Damsté
Clim. Past, 11, 383–402,,, 2015
Warm Middle Jurassic–Early Cretaceous high-latitude sea-surface temperatures from the Southern Ocean
H. C. Jenkyns, L. Schouten-Huibers, S. Schouten, and J. S. Sinninghe Damsté
Clim. Past, 8, 215–226,,, 2012

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 (0.5–1100 C) using carbonate-based standardization, Geophys. Res. Lett., 38, e2020GL092069,, 2021. 
Baghli, H., Mattioli, E., Spangenberg, J. E., Bensalah, M., Arnaud-Godet, F., Pittet, B., and Suan, G.: Early Jurassic climatic trends in the south-Tethyan margin, Gondwana Res., 77, 67–81,, 2020. 
Barrick, R. E., Fischer, A. G., and Showers, W. J.: Oxygen isotopes from turtle bone; applications for terrestrial paleoclimates?, PALAIOS, 14, 186–191,, 1999. 
Bernasconi, S. M., Müller, I. A., 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,, 2018. 
Short summary
In this study, we applied geochemical tools to well-preserved ∼180-million-year-old marine mollusc shells from polar and mid-latitude seas. These results indicate that polar shells grew at temperatures of 8–18°C, while mid-latitude shells grew at temperatures of 24–28°C. These results, together with previously published data, raise concerns about the ability of climate models to predict accurate polar temperatures under reasonably high atmospheric CO2 levels.