Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells
19 pages International audience The first step of ice-sheet build-up on Antarctica at the Eocene-Oligocene boundary was followed by a phase of climate instability culminating during the Miocene with a warming event called the Middle Miocene Climate Optimum (MMCO), that ended with a marked cooling ph...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-02449079 https://hal.science/hal-02449079/document https://hal.science/hal-02449079/file/1-s2.0-S0031018219308272-am.pdf https://doi.org/10.1016/j.palaeo.2019.109582 |
id |
ftceafr:oai:HAL:hal-02449079v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
Hydrological cycle Middle Miocene Paleoclimate Clumped isotopes Climatic Optimum Coastal environment [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
spellingShingle |
Hydrological cycle Middle Miocene Paleoclimate Clumped isotopes Climatic Optimum Coastal environment [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy Briard, Justine Pucéat, Emmanuelle Vennin, Emmanuelle Daëron, M. Chavagnac, V. Jaillet, R. Merle, Didier de Rafélis, Marc Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
topic_facet |
Hydrological cycle Middle Miocene Paleoclimate Clumped isotopes Climatic Optimum Coastal environment [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
description |
19 pages International audience The first step of ice-sheet build-up on Antarctica at the Eocene-Oligocene boundary was followed by a phase of climate instability culminating during the Miocene with a warming event called the Middle Miocene Climate Optimum (MMCO), that ended with a marked cooling phase identified as the Middle Miocene Climate Transition (MMCT). While numerous benthic foraminifera δ18O and Mg/Ca data have been used to capture the global climate evolution during this interval of climate and ice-sheet instability, geochemical records from shallow-water carbonates still remain scarce. Yet such records are crucial to capture the diversity of regional environmental responses to global climate changes, and thus to better understand the behavior of our climate system during this critical interval. In this work, we test the potential of a multi-proxy approach (δ18O, clumped isotope (Δ47), strontium isotopes (87Sr/86Sr)) applied to bivalves recovered from the Liguro-Provencal Basin and Rhodano-Provencal basin (Northwestern of the Mediterranean Sea) to reconstruct the evolution of shallow seawater temperature and salinity in this region over the latest Oligocene to Middle Miocene interval (~10 Myrs). Our results highlight a local cooling in the northwestern Mediterranean Sea during the MMCO that contrasts with the warming observed in other regions, with seawater temperatures inferred from Δ47 analyses in the 13–18 °C range. These cool seawater temperatures recorded in the studied region during the MMCO are much cooler than those recorded in the open oceans, but are in agreement with the proliferation of bryozoan observed in the Castillon-Du-Gard area during this interval. Low bivalve δ18O values (−3.24‰ in average) are recorded during this episode are interpreted to reflect enhanced freshwater inputs, lowering local salinity and seawater δ18O. Such enhanced freshwater inputs point to a phase of enhanced hydrological cycle in the studied region, possibly linked to the global mid-Miocene warming event. ... |
author2 |
Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) 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) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)) Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) ANR-16-CE31-0020,AMOR,Reconstruction modèle-données des climats du Cénozoique(2016) |
format |
Article in Journal/Newspaper |
author |
Briard, Justine Pucéat, Emmanuelle Vennin, Emmanuelle Daëron, M. Chavagnac, V. Jaillet, R. Merle, Didier de Rafélis, Marc |
author_facet |
Briard, Justine Pucéat, Emmanuelle Vennin, Emmanuelle Daëron, M. Chavagnac, V. Jaillet, R. Merle, Didier de Rafélis, Marc |
author_sort |
Briard, Justine |
title |
Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
title_short |
Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
title_full |
Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
title_fullStr |
Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
title_full_unstemmed |
Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells |
title_sort |
seawater paleotemperature and paleosalinity evolution in neritic environments of the mediterranean margin: insights from isotope analysis of bivalve shells |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02449079 https://hal.science/hal-02449079/document https://hal.science/hal-02449079/file/1-s2.0-S0031018219308272-am.pdf https://doi.org/10.1016/j.palaeo.2019.109582 |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_source |
ISSN: 0031-0182 EISSN: 1872-616X Palaeogeography, Palaeoclimatology, Palaeoecology https://hal.science/hal-02449079 Palaeogeography, Palaeoclimatology, Palaeoecology, 2020, 543, pp.109582. ⟨10.1016/j.palaeo.2019.109582⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2019.109582 hal-02449079 https://hal.science/hal-02449079 https://hal.science/hal-02449079/document https://hal.science/hal-02449079/file/1-s2.0-S0031018219308272-am.pdf doi:10.1016/j.palaeo.2019.109582 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2019.109582 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
543 |
container_start_page |
109582 |
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1810494655565922304 |
spelling |
ftceafr:oai:HAL:hal-02449079v1 2024-09-15T17:46:29+00:00 Seawater paleotemperature and paleosalinity evolution in neritic environments of the Mediterranean margin: insights from isotope analysis of bivalve shells Briard, Justine Pucéat, Emmanuelle Vennin, Emmanuelle Daëron, M. Chavagnac, V. Jaillet, R. Merle, Didier de Rafélis, Marc Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) 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) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)) Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) ANR-16-CE31-0020,AMOR,Reconstruction modèle-données des climats du Cénozoique(2016) 2020-04-01 https://hal.science/hal-02449079 https://hal.science/hal-02449079/document https://hal.science/hal-02449079/file/1-s2.0-S0031018219308272-am.pdf https://doi.org/10.1016/j.palaeo.2019.109582 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2019.109582 hal-02449079 https://hal.science/hal-02449079 https://hal.science/hal-02449079/document https://hal.science/hal-02449079/file/1-s2.0-S0031018219308272-am.pdf doi:10.1016/j.palaeo.2019.109582 info:eu-repo/semantics/OpenAccess ISSN: 0031-0182 EISSN: 1872-616X Palaeogeography, Palaeoclimatology, Palaeoecology https://hal.science/hal-02449079 Palaeogeography, Palaeoclimatology, Palaeoecology, 2020, 543, pp.109582. ⟨10.1016/j.palaeo.2019.109582⟩ Hydrological cycle Middle Miocene Paleoclimate Clumped isotopes Climatic Optimum Coastal environment [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy info:eu-repo/semantics/article Journal articles 2020 ftceafr https://doi.org/10.1016/j.palaeo.2019.109582 2024-07-22T13:15:01Z 19 pages International audience The first step of ice-sheet build-up on Antarctica at the Eocene-Oligocene boundary was followed by a phase of climate instability culminating during the Miocene with a warming event called the Middle Miocene Climate Optimum (MMCO), that ended with a marked cooling phase identified as the Middle Miocene Climate Transition (MMCT). While numerous benthic foraminifera δ18O and Mg/Ca data have been used to capture the global climate evolution during this interval of climate and ice-sheet instability, geochemical records from shallow-water carbonates still remain scarce. Yet such records are crucial to capture the diversity of regional environmental responses to global climate changes, and thus to better understand the behavior of our climate system during this critical interval. In this work, we test the potential of a multi-proxy approach (δ18O, clumped isotope (Δ47), strontium isotopes (87Sr/86Sr)) applied to bivalves recovered from the Liguro-Provencal Basin and Rhodano-Provencal basin (Northwestern of the Mediterranean Sea) to reconstruct the evolution of shallow seawater temperature and salinity in this region over the latest Oligocene to Middle Miocene interval (~10 Myrs). Our results highlight a local cooling in the northwestern Mediterranean Sea during the MMCO that contrasts with the warming observed in other regions, with seawater temperatures inferred from Δ47 analyses in the 13–18 °C range. These cool seawater temperatures recorded in the studied region during the MMCO are much cooler than those recorded in the open oceans, but are in agreement with the proliferation of bryozoan observed in the Castillon-Du-Gard area during this interval. Low bivalve δ18O values (−3.24‰ in average) are recorded during this episode are interpreted to reflect enhanced freshwater inputs, lowering local salinity and seawater δ18O. Such enhanced freshwater inputs point to a phase of enhanced hydrological cycle in the studied region, possibly linked to the global mid-Miocene warming event. ... Article in Journal/Newspaper Antarc* Antarctica Ice Sheet HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Palaeogeography, Palaeoclimatology, Palaeoecology 543 109582 |