Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 2
Articles | Volume 22, issue 2
https://doi.org/10.5194/cp-22-357-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-357-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 2
Research article
 | 
12 Feb 2026
Research article |  | 12 Feb 2026

Decoding the North Atlantic Ocean circulation breakthrough in the Aptian–Albian transition

João M. F. Ramos, Jairo F. Savian, Daniel R. Franco, Milene F. Figueiredo, Rodolfo Coccioni, and Fabrizio Frontalini

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Short summary
During the Aptian–Albian interval of the Cretaceous, Earth's climate changed significantly due to volcanism, atmospheric shifts, and reorganised ocean circulation. These changes influenced marine sediments, especially reddish Cretaceous oceanic red beds (CORBs), which reflect intervals of deep-ocean oxygenation. This study analysed sediment cores from ODP Site 1049 (North Atlantic) to determine when CORBs formed and whether similar patterns occurred in other basins, such as the Tethys.
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