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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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-00565862 https://doi.org/10.1130/G31579.1 |
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ftsorbonneuniv:oai:HAL:hal-00565862v1 2024-09-30T14:36:28+00:00 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) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) 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) Ministère de la Culture et de la Communication (MCC)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) GeoZentrum Nordbayern Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg (FAU) 2011-03 https://hal.science/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.science/hal-00565862 doi:10.1130/G31579.1 ISSN: 0091-7613 EISSN: 1943-2682 Geology https://hal.science/hal-00565862 Geology, 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 ftsorbonneuniv https://doi.org/10.1130/G31579.1 2024-09-06T00:03:55Z 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 HAL Sorbonne Université Geology 39 3 215 218 |
institution |
Open Polar |
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HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
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) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) 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) Ministère de la Culture et de la Communication (MCC)-Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) GeoZentrum Nordbayern Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg (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.science/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: 1943-2682 Geology https://hal.science/hal-00565862 Geology, 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.science/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_ |
1811639504887349248 |