dc.contributor.author | Barnet, J | |
dc.contributor.author | Littler, K | |
dc.contributor.author | Kroon, D | |
dc.contributor.author | Leng, M | |
dc.contributor.author | Westerhold, T | |
dc.contributor.author | Röhl, U | |
dc.contributor.author | Zachos, J | |
dc.date.accessioned | 2018-01-12T15:20:13Z | |
dc.date.issued | 2017-12-12 | |
dc.description.abstract | The late Maastrichtian warming event was defined by a global temperature increase of ∼2.5–5 °C that occurred ∼150–300 k.y. before the Cretaceous-Paleogene (K-Pg) mass extinction. This transient warming event has traditionally been associated with a major pulse of Deccan Traps (west-central India) volcanism; however, large uncertainties associated with radiogenic dating methods have long hampered a definitive correlation. Here we present a new high-resolution, single species, benthic stable isotope record from the South Atlantic, calibrated to an updated orbitally tuned age model, to provide a revised chronology of the event, which we then correlate to the latest radiogenic dates of the main Deccan Traps eruption phases. Our data reveal that the initiation of deep-sea warming coincides, within uncertainty, with the onset of the main phase of Deccan volcanism, strongly suggesting a causal link. The onset of deep-sea warming is synchronous with a 405 k.y. eccentricity minimum, excluding a control by orbital forcing alone, although amplified carbon cycle sensitivity to orbital precession is evident during the greenhouse warming. A more precise understanding of Deccan-induced climate change paves the way for future work focusing on the fundamental role of these precursor climate shifts in the K-Pg mass extinction. | en_GB |
dc.description.sponsorship | Financial support for this research was provided by the Deutsche Forschungsgemeinschaft (DFG) to Ursula Röhl and Thomas Westerhold. | en_GB |
dc.identifier.citation | Published online 12 December 2017 | en_GB |
dc.identifier.doi | 10.1130/G39771.1 | |
dc.identifier.uri | http://hdl.handle.net/10871/30937 | |
dc.language.iso | en | en_GB |
dc.publisher | Geological Society of America | en_GB |
dc.rights | © 2017 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY license. | en_GB |
dc.title | A new high-resolution chronology for the late Maastrichtian warming event: Establishing robust temporal links with the onset of Deccan volcanism | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 0091-7613 | |
dc.description | This is the author accepted manuscript. The final version is available from Geological Society of America via the DOI in this record. | en_GB |
dc.identifier.journal | Geology | en_GB |