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Climatic ups and downs in a disturbed Jurassic world

2011; Geological Society of America; Volume: 39; Issue: 3 Linguagem: Inglês

10.1130/g31579.1

1943-2682

Guillaume Dera, Benjamin Brigaud, Fabrice Monna, Rémi Laffont, Emmanuelle Pucéat, Jean‐François Deconinck, Pierre Pellenard, Michael M. Joachimski, Christophe Durlet,

Paleontology and Stratigraphy of Fossils

Research Article| March 01, 2011 Climatic ups and downs in a disturbed Jurassic world Guillaume Dera; Guillaume Dera * 1LSCE-IPSL (Laboratoire des Sciences du Climat et de l'Environnement–Institut Pierre Simon Laplace), CNRS-UMR 8212, CEA, F-91191 Gif-sur-Yvette, France2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France *E-mail: guillaume.dera@lsce.ipsl.fr. Search for other works by this author on: GSW Google Scholar Benjamin Brigaud; Benjamin Brigaud 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France3IDES (Interactions et Dynamique des Environnements de Surface), CNRS-UMR 8148, Université Paris Sud, F-91405 Orsay, France Search for other works by this author on: GSW Google Scholar Fabrice Monna; Fabrice Monna 4ARTeHIS (Archéologie, Terre, Histoire, Sociétés), CNRS-UMR 5594, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Rémi Laffont; Rémi Laffont 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Emmanuelle Pucéat; Emmanuelle Pucéat 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Jean-François Deconinck; Jean-François Deconinck 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Pierre Pellenard; Pierre Pellenard 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Michael M. Joachimski; Michael M. Joachimski 5GeoZentrum Nordbayern, Universität Erlangen-Nürnberg, D-91054 Erlangen, Germany Search for other works by this author on: GSW Google Scholar Christophe Durlet Christophe Durlet 2Biogéosciences, CNRS-UMR 5561, Université de Bourgogne, F-21000 Dijon, France Search for other works by this author on: GSW Google Scholar Geology (2011) 39 (3): 215–218. https://doi.org/10.1130/G31579.1 Article history received: 16 Jul 2010 rev-recd: 23 Sep 2010 accepted: 06 Oct 2010 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Guillaume Dera, Benjamin Brigaud, Fabrice Monna, Rémi Laffont, Emmanuelle Pucéat, Jean-François Deconinck, Pierre Pellenard, Michael M. Joachimski, Christophe Durlet; Climatic ups and downs in a disturbed Jurassic world. Geology 2011;; 39 (3): 215–218. doi: https://doi.org/10.1130/G31579.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The tropical, warm, and equable climate of the Jurassic world is regularly challenged by geoscientists, especially since oxygen isotopes (δ18O) of fossil hardparts have been used to reconstruct the paleotemperature history of seawater. By applying the innovative "SiZer" (significant zero crossings of the derivatives) statistical approach to a newly compiled δ18O database for the Jurassic, we demonstrate the occurrence of major and multiscale δ18O changes mainly related to climate disturbances. For the first time, two long-term anomalies in δ18O are identified during the Toarcian and the Late Jurassic, in conjunction with intensive volcanism in large igneous provinces. These results support a strong influence of repeated volcanic pulses on the modulation of pCO2, temperatures, and polar ice cap volumes over protracted periods. At shorter time scales, 13 relatively rapid (0.5–1 m.y.) and significant warming and cooling events are identified, the causes of which include transient fluctuations in greenhouse gas concentrations related to still-debated mechanisms. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.