Climatic ups and downs in a disturbed Jurassic world.
4 pages International audience The tropical, warm, and equable climate of the Jurassic world is regularly challenged by geoscientists, especially since oxygen isotopes ( 18O) of fossil hardparts have been used to reconstruct the paleotemperature history of seawater. By applying the innovative “SiZer...
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Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00565862 https://doi.org/10.1130/G31579.1 |
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ftccsdartic:oai:HAL:hal-00565862v1 2023-05-15T16:38:15+02:00 Climatic ups and downs in a disturbed Jurassic world. Dera, Guillaume Brigaud, Benjamin Monna, Fabrice Laffont, Rémi Pucéat, Emmanuelle Deconinck, Jean-François Pellenard, Pierre Joachimski, Michael M. Durlet, Christophe Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Biogéosciences UMR 6282 Dijon (BGS) Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Archéologie, Terre, Histoire, Sociétés Dijon (ARTeHiS) Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-Ministère de la Culture et de la Communication (MCC) GeoZentrum Nordbayern Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) 2011-03 https://hal.archives-ouvertes.fr/hal-00565862 https://doi.org/10.1130/G31579.1 en eng HAL CCSD Geological Society of America info:eu-repo/semantics/altIdentifier/doi/10.1130/G31579.1 hal-00565862 https://hal.archives-ouvertes.fr/hal-00565862 doi:10.1130/G31579.1 ISSN: 0091-7613 EISSN: 0091-7613 Geology https://hal.archives-ouvertes.fr/hal-00565862 Geology, Geological Society of America, 2011, 39 (3), pp.215-218. ⟨10.1130/G31579.1⟩ [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.1130/G31579.1 2021-12-19T03:43:12Z 4 pages International audience The tropical, warm, and equable climate of the Jurassic world is regularly challenged by geoscientists, especially since oxygen isotopes ( 18O) 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 18O database for the Jurassic, we demonstrate the occurrence of major and multiscale 18O changes mainly related to climate disturbances. For the first time, two long-term anomalies in 18O 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. Article in Journal/Newspaper Ice cap Polar Ice Cap Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Geology 39 3 215 218 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes Dera, Guillaume Brigaud, Benjamin Monna, Fabrice Laffont, Rémi Pucéat, Emmanuelle Deconinck, Jean-François Pellenard, Pierre Joachimski, Michael M. Durlet, Christophe Climatic ups and downs in a disturbed Jurassic world. |
topic_facet |
[SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE.MCG]Environmental Sciences/Global Changes |
description |
4 pages International audience The tropical, warm, and equable climate of the Jurassic world is regularly challenged by geoscientists, especially since oxygen isotopes ( 18O) 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 18O database for the Jurassic, we demonstrate the occurrence of major and multiscale 18O changes mainly related to climate disturbances. For the first time, two long-term anomalies in 18O 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. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Biogéosciences UMR 6282 Dijon (BGS) Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Archéologie, Terre, Histoire, Sociétés Dijon (ARTeHiS) Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-Ministère de la Culture et de la Communication (MCC) GeoZentrum Nordbayern Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) |
format |
Article in Journal/Newspaper |
author |
Dera, Guillaume Brigaud, Benjamin Monna, Fabrice Laffont, Rémi Pucéat, Emmanuelle Deconinck, Jean-François Pellenard, Pierre Joachimski, Michael M. Durlet, Christophe |
author_facet |
Dera, Guillaume Brigaud, Benjamin Monna, Fabrice Laffont, Rémi Pucéat, Emmanuelle Deconinck, Jean-François Pellenard, Pierre Joachimski, Michael M. Durlet, Christophe |
author_sort |
Dera, Guillaume |
title |
Climatic ups and downs in a disturbed Jurassic world. |
title_short |
Climatic ups and downs in a disturbed Jurassic world. |
title_full |
Climatic ups and downs in a disturbed Jurassic world. |
title_fullStr |
Climatic ups and downs in a disturbed Jurassic world. |
title_full_unstemmed |
Climatic ups and downs in a disturbed Jurassic world. |
title_sort |
climatic ups and downs in a disturbed jurassic world. |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.archives-ouvertes.fr/hal-00565862 https://doi.org/10.1130/G31579.1 |
genre |
Ice cap Polar Ice Cap |
genre_facet |
Ice cap Polar Ice Cap |
op_source |
ISSN: 0091-7613 EISSN: 0091-7613 Geology https://hal.archives-ouvertes.fr/hal-00565862 Geology, Geological Society of America, 2011, 39 (3), pp.215-218. ⟨10.1130/G31579.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1130/G31579.1 hal-00565862 https://hal.archives-ouvertes.fr/hal-00565862 doi:10.1130/G31579.1 |
op_doi |
https://doi.org/10.1130/G31579.1 |
container_title |
Geology |
container_volume |
39 |
container_issue |
3 |
container_start_page |
215 |
op_container_end_page |
218 |
_version_ |
1766028533441757184 |