Evidence for global cooling in the Late Cretaceous

Christian Linnert (), Stuart A. Robinson, Jackie A. Lees, Paul R. Bown, Irene Pérez-Rodríguez, Maria Rose Petrizzo, Francesca Falzoni, Kate Littler, José Antonio Arz and Ernest E. Russell
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Christian Linnert: University College London
Stuart A. Robinson: University of Oxford
Jackie A. Lees: University College London
Paul R. Bown: University College London
Irene Pérez-Rodríguez: Instituto de Investigación en Ciencias Ambientales (IUCA), Universidad de Zaragoza
Maria Rose Petrizzo: Università degli Studi di Milano
Francesca Falzoni: Università degli Studi di Milano
Kate Littler: University College London
José Antonio Arz: Instituto de Investigación en Ciencias Ambientales (IUCA), Universidad de Zaragoza
Ernest E. Russell: Mississippi State University

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract The Late Cretaceous ‘greenhouse’ world witnessed a transition from one of the warmest climates of the past 140 million years to cooler conditions, yet still without significant continental ice. Low-latitude sea surface temperature (SST) records are a vital piece of evidence required to unravel the cause of Late Cretaceous cooling, but high-quality data remain illusive. Here, using an organic geochemical palaeothermometer (TEX86), we present a record of SSTs for the Campanian–Maastrichtian interval (~83–66 Ma) from hemipelagic sediments deposited on the western North Atlantic shelf. Our record reveals that the North Atlantic at 35 °N was relatively warm in the earliest Campanian, with maximum SSTs of ~35 °C, but experienced significant cooling (~7 °C) after this to

Date: 2014
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DOI: 10.1038/ncomms5194

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