Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition
International audience Abstract. The role and climatic impact of the opening of the Drake Passage and how it affected both marine and terrestrial environments across the Eocene–Oligocene transition (EOT ∼34 Ma) period remains poorly understood. Here we present new terrestrial palynomorph data compar...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal.science/hal-03557485 https://hal.science/hal-03557485/document https://hal.science/hal-03557485/file/2022-%20Thompson%20et%20al.%20%20CP2022.pdf https://doi.org/10.5194/cp-18-209-2022 |
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ftuniversailles:oai:HAL:hal-03557485v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE]Environmental Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE]Environmental Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Thompson, Nick Salzmann, Ulrich López-Quirós, Adrián Bijl, Peter K. Hoem, Frida S. Etourneau, Johan Sicre, Marie-Alexandrine Roignant, Sabine Hocking, Emma Amoo, Michael Escutia, Carlota Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE]Environmental Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience Abstract. The role and climatic impact of the opening of the Drake Passage and how it affected both marine and terrestrial environments across the Eocene–Oligocene transition (EOT ∼34 Ma) period remains poorly understood. Here we present new terrestrial palynomorph data compared with recently compiled lipid biomarker (n-alkane) data from Ocean Drilling Program (ODP) Leg 113, Site 696, drilled on the margin of the South Orkney Microcontinent (SOM) in the Weddell Sea, to investigate changes in terrestrial environments and palaeoclimate across the late Eocene and early Oligocene (∼37.6–32.2 Ma). Early late Eocene floras and sporomorph-based climate estimates reveal Nothofagus-dominated forests growing under wet temperate conditions, with mean annual temperature (MAT) and precipitation (MAP) around 12 ∘C and 1802 mm respectively. A phase of latest Eocene terrestrial cooling at 35.5 Ma reveals a decrease in MAT by around 1.4 ∘C possibly linked to the opening of the Powell Basin. This is followed by an increase in reworked Mesozoic sporomorphs together with sedimentological evidence indicating ice expansion to coastal and shelf areas approximately 34.1 Myr ago. However, major changes to the terrestrial vegetation at Site 696 did not take place until the early Oligocene, where there is a distinct expansion of gymnosperms and cryptogams accompanied by a rapid increase in taxon diversity and a shift in terrestrial biomarkers reflecting a change from temperate forests to cool temperate forests following 33.5 Ma. This surprising expansion of gymnosperms and cryptogams is suggested to be linked to environmental disturbance caused by repeat glacial expansion and retreat, which facilitated the proliferation of conifers and ferns. The timing of glacial onset at Site 696 is linked to the global cooling at the EOT, yet the latest Eocene regional cooling cannot directly be linked to the observed vegetation changes. Therefore, our vegetation record provides further evidence that the opening of the Drake ... |
author2 |
Newcastle University Newcastle Aarhus University Aarhus Instituto Andaluz de Ciencias de la Tierra (IACT) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC)-Universidad de Granada = University of Granada (UGR) Department of Earth Sciences Utrecht Universiteit Utrecht / Utrecht University Utrecht Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) University of Northumbria at Newcastle United Kingdom |
format |
Article in Journal/Newspaper |
author |
Thompson, Nick Salzmann, Ulrich López-Quirós, Adrián Bijl, Peter K. Hoem, Frida S. Etourneau, Johan Sicre, Marie-Alexandrine Roignant, Sabine Hocking, Emma Amoo, Michael Escutia, Carlota |
author_facet |
Thompson, Nick Salzmann, Ulrich López-Quirós, Adrián Bijl, Peter K. Hoem, Frida S. Etourneau, Johan Sicre, Marie-Alexandrine Roignant, Sabine Hocking, Emma Amoo, Michael Escutia, Carlota |
author_sort |
Thompson, Nick |
title |
Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
title_short |
Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
title_full |
Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
title_fullStr |
Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
title_full_unstemmed |
Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition |
title_sort |
vegetation change across the drake passage region linked to late eocene cooling and glacial disturbance after the eocene-oligocene transition |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03557485 https://hal.science/hal-03557485/document https://hal.science/hal-03557485/file/2022-%20Thompson%20et%20al.%20%20CP2022.pdf https://doi.org/10.5194/cp-18-209-2022 |
genre |
Drake Passage Weddell Sea |
genre_facet |
Drake Passage Weddell Sea |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03557485 Climate of the Past, 2022, 18 (2), pp.209-232. ⟨10.5194/cp-18-209-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-209-2022 hal-03557485 https://hal.science/hal-03557485 https://hal.science/hal-03557485/document https://hal.science/hal-03557485/file/2022-%20Thompson%20et%20al.%20%20CP2022.pdf doi:10.5194/cp-18-209-2022 WOS: 000758080800001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-18-209-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
2 |
container_start_page |
209 |
op_container_end_page |
232 |
_version_ |
1799479087135195136 |
spelling |
ftuniversailles:oai:HAL:hal-03557485v1 2024-05-19T07:39:30+00:00 Vegetation change across the Drake Passage region linked to late Eocene cooling and glacial disturbance after the Eocene-Oligocene transition Thompson, Nick Salzmann, Ulrich López-Quirós, Adrián Bijl, Peter K. Hoem, Frida S. Etourneau, Johan Sicre, Marie-Alexandrine Roignant, Sabine Hocking, Emma Amoo, Michael Escutia, Carlota Newcastle University Newcastle Aarhus University Aarhus Instituto Andaluz de Ciencias de la Tierra (IACT) Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC)-Universidad de Granada = University of Granada (UGR) Department of Earth Sciences Utrecht Universiteit Utrecht / Utrecht University Utrecht Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) University of Northumbria at Newcastle United Kingdom 2022-02-04 https://hal.science/hal-03557485 https://hal.science/hal-03557485/document https://hal.science/hal-03557485/file/2022-%20Thompson%20et%20al.%20%20CP2022.pdf https://doi.org/10.5194/cp-18-209-2022 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-18-209-2022 hal-03557485 https://hal.science/hal-03557485 https://hal.science/hal-03557485/document https://hal.science/hal-03557485/file/2022-%20Thompson%20et%20al.%20%20CP2022.pdf doi:10.5194/cp-18-209-2022 WOS: 000758080800001 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03557485 Climate of the Past, 2022, 18 (2), pp.209-232. ⟨10.5194/cp-18-209-2022⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDE]Environmental Sciences [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2022 ftuniversailles https://doi.org/10.5194/cp-18-209-2022 2024-04-25T00:23:41Z International audience Abstract. The role and climatic impact of the opening of the Drake Passage and how it affected both marine and terrestrial environments across the Eocene–Oligocene transition (EOT ∼34 Ma) period remains poorly understood. Here we present new terrestrial palynomorph data compared with recently compiled lipid biomarker (n-alkane) data from Ocean Drilling Program (ODP) Leg 113, Site 696, drilled on the margin of the South Orkney Microcontinent (SOM) in the Weddell Sea, to investigate changes in terrestrial environments and palaeoclimate across the late Eocene and early Oligocene (∼37.6–32.2 Ma). Early late Eocene floras and sporomorph-based climate estimates reveal Nothofagus-dominated forests growing under wet temperate conditions, with mean annual temperature (MAT) and precipitation (MAP) around 12 ∘C and 1802 mm respectively. A phase of latest Eocene terrestrial cooling at 35.5 Ma reveals a decrease in MAT by around 1.4 ∘C possibly linked to the opening of the Powell Basin. This is followed by an increase in reworked Mesozoic sporomorphs together with sedimentological evidence indicating ice expansion to coastal and shelf areas approximately 34.1 Myr ago. However, major changes to the terrestrial vegetation at Site 696 did not take place until the early Oligocene, where there is a distinct expansion of gymnosperms and cryptogams accompanied by a rapid increase in taxon diversity and a shift in terrestrial biomarkers reflecting a change from temperate forests to cool temperate forests following 33.5 Ma. This surprising expansion of gymnosperms and cryptogams is suggested to be linked to environmental disturbance caused by repeat glacial expansion and retreat, which facilitated the proliferation of conifers and ferns. The timing of glacial onset at Site 696 is linked to the global cooling at the EOT, yet the latest Eocene regional cooling cannot directly be linked to the observed vegetation changes. Therefore, our vegetation record provides further evidence that the opening of the Drake ... Article in Journal/Newspaper Drake Passage Weddell Sea Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Climate of the Past 18 2 209 232 |