The Eocene-Oligocene boundary climate transition:an Antarctic perspective
Antarctica underwent a complex evolution over the course of the Cenozoic, which influenced the history of the Earth’s climate system. The Eocene-Oligocene boundary is a divide of this history when the ice-free ‘greenhouse world’ transitioned to the ‘icehouse’ with the glaciation of Antarctica. Prior...
Main Authors: | , , , , , , , , , , , , , |
---|---|
Other Authors: | , , , |
Format: | Book Part |
Language: | unknown |
Published: |
Elsevier BV
2022
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/359725 |
id |
ftcsic:oai:digital.csic.es:10261/359725 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/359725 2024-06-23T07:47:18+00:00 The Eocene-Oligocene boundary climate transition:an Antarctic perspective Galeotti, Simone Bijl, Peter K. Brinkuis, Henk DeConto, Robert M. Escutia, Carlota Florindo, Fabio Gasson, Edward G. W. Francis, Jane Hutchinson, David Kennedy-Asser, Alan Lanci, Luca Sauermilch, Isabel Sluijs, Appy Stocchi, Paolo Ministerio de Economía, Industria y Competitividad (España) Royal Society (UK) European Research Council Australian Research Council 2022 http://hdl.handle.net/10261/359725 unknown Elsevier BV #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-89711-C2-1-P/ES/EVENTOS TECTONICOS Y OCEANOGRAFICOS EN EL DESARROLLO DE LA CORRIENTE CIRCUMPOLAR ANTARTICA (ACC) Y SU RELACION CON LA EVOLUCION PALEOCLIMATICA Y DEL CASQUETE DE HIELOS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-89711-C2-2-P/ES/PRINCIPALES PROCESOS TECTONICOS INVOLUCRADOS EN EL INICIO Y EVOLUCION DE LA CORRIENTE CIRCUMPOLAR ANTARTICA (ACC): DESARROLLO DE MARGENES CONTINENTALES Y CUENCAS OCEANICAS/ https://doi.org/10.1016/B978-0-12-819109-5.00009-8 Sí isbn: 978-0-12-819109-5 Antarctic Climate Evolution 7: 297-361 (2022) http://hdl.handle.net/10261/359725 none ocene-Oligocene boundary Antarctica Glaciation Atmospheric CO2 Ocean gateway capítulo de libro 2022 ftcsic https://doi.org/10.1016/B978-0-12-819109-5.00009-8 2024-06-11T23:56:09Z Antarctica underwent a complex evolution over the course of the Cenozoic, which influenced the history of the Earth’s climate system. The Eocene-Oligocene boundary is a divide of this history when the ice-free ‘greenhouse world’ transitioned to the ‘icehouse’ with the glaciation of Antarctica. Prior to this, Antarctica experienced warm climates, peaking during Early Eocene when tropical-like conditions existed at the margins of the continent where geological evidence is present. Climate signals in the geological record show that the climate then cooled, but not enough to allow the existence of significant ice until the latest Eocene. Glacial deposits from several areas around the continental margin indicate that ice was present by the earliest Oligocene. This matches the major oxygen isotope positive shift captured by marine records. On land, vegetation was able to persist, but the thermophylic plants of the Eocene were replaced by shrubby vegetation with the southern beech Nothofagus, mosses and ferns, which survived in tundra-like conditions. Coupled climate–ice sheet modelling indicates that changing levels of atmospheric CO2 controlled Antarctica’s climate and the onset of glaciation. Factors such as mountain uplift, vegetation changes, ocean gateway opening and orbital forcing all played a part in cooling the polar climate, but only when CO2 levels reached critical thresholds was Antarctica tipped into an icy glacial world. CE acknowledges funding by the Spanish Ministry of Economy, Industry and Competitivity (grants CTM2017-89711-C2-1/2-P), cofunded by the European Union through FEDER funds. IS was supported by the Australian Research Council Discovery Project 180102280. A.T. Kennedy Asser was supported by NERC funding (grant no. NE/L002434/1) Edward Gasson is funded by the Royal Society. EG is funded by the Royal Society. AS thanks the European Research Council for Consolidator Grant #771497 (SPANC). Book Part Antarc* Antarctic Antarctica Ice Sheet Tundra Digital.CSIC (Spanish National Research Council) Antarctic 297 361 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
ocene-Oligocene boundary Antarctica Glaciation Atmospheric CO2 Ocean gateway |
spellingShingle |
ocene-Oligocene boundary Antarctica Glaciation Atmospheric CO2 Ocean gateway Galeotti, Simone Bijl, Peter K. Brinkuis, Henk DeConto, Robert M. Escutia, Carlota Florindo, Fabio Gasson, Edward G. W. Francis, Jane Hutchinson, David Kennedy-Asser, Alan Lanci, Luca Sauermilch, Isabel Sluijs, Appy Stocchi, Paolo The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
topic_facet |
ocene-Oligocene boundary Antarctica Glaciation Atmospheric CO2 Ocean gateway |
description |
Antarctica underwent a complex evolution over the course of the Cenozoic, which influenced the history of the Earth’s climate system. The Eocene-Oligocene boundary is a divide of this history when the ice-free ‘greenhouse world’ transitioned to the ‘icehouse’ with the glaciation of Antarctica. Prior to this, Antarctica experienced warm climates, peaking during Early Eocene when tropical-like conditions existed at the margins of the continent where geological evidence is present. Climate signals in the geological record show that the climate then cooled, but not enough to allow the existence of significant ice until the latest Eocene. Glacial deposits from several areas around the continental margin indicate that ice was present by the earliest Oligocene. This matches the major oxygen isotope positive shift captured by marine records. On land, vegetation was able to persist, but the thermophylic plants of the Eocene were replaced by shrubby vegetation with the southern beech Nothofagus, mosses and ferns, which survived in tundra-like conditions. Coupled climate–ice sheet modelling indicates that changing levels of atmospheric CO2 controlled Antarctica’s climate and the onset of glaciation. Factors such as mountain uplift, vegetation changes, ocean gateway opening and orbital forcing all played a part in cooling the polar climate, but only when CO2 levels reached critical thresholds was Antarctica tipped into an icy glacial world. CE acknowledges funding by the Spanish Ministry of Economy, Industry and Competitivity (grants CTM2017-89711-C2-1/2-P), cofunded by the European Union through FEDER funds. IS was supported by the Australian Research Council Discovery Project 180102280. A.T. Kennedy Asser was supported by NERC funding (grant no. NE/L002434/1) Edward Gasson is funded by the Royal Society. EG is funded by the Royal Society. AS thanks the European Research Council for Consolidator Grant #771497 (SPANC). |
author2 |
Ministerio de Economía, Industria y Competitividad (España) Royal Society (UK) European Research Council Australian Research Council |
format |
Book Part |
author |
Galeotti, Simone Bijl, Peter K. Brinkuis, Henk DeConto, Robert M. Escutia, Carlota Florindo, Fabio Gasson, Edward G. W. Francis, Jane Hutchinson, David Kennedy-Asser, Alan Lanci, Luca Sauermilch, Isabel Sluijs, Appy Stocchi, Paolo |
author_facet |
Galeotti, Simone Bijl, Peter K. Brinkuis, Henk DeConto, Robert M. Escutia, Carlota Florindo, Fabio Gasson, Edward G. W. Francis, Jane Hutchinson, David Kennedy-Asser, Alan Lanci, Luca Sauermilch, Isabel Sluijs, Appy Stocchi, Paolo |
author_sort |
Galeotti, Simone |
title |
The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
title_short |
The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
title_full |
The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
title_fullStr |
The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
title_full_unstemmed |
The Eocene-Oligocene boundary climate transition:an Antarctic perspective |
title_sort |
eocene-oligocene boundary climate transition:an antarctic perspective |
publisher |
Elsevier BV |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/359725 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Tundra |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Tundra |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-89711-C2-1-P/ES/EVENTOS TECTONICOS Y OCEANOGRAFICOS EN EL DESARROLLO DE LA CORRIENTE CIRCUMPOLAR ANTARTICA (ACC) Y SU RELACION CON LA EVOLUCION PALEOCLIMATICA Y DEL CASQUETE DE HIELOS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-89711-C2-2-P/ES/PRINCIPALES PROCESOS TECTONICOS INVOLUCRADOS EN EL INICIO Y EVOLUCION DE LA CORRIENTE CIRCUMPOLAR ANTARTICA (ACC): DESARROLLO DE MARGENES CONTINENTALES Y CUENCAS OCEANICAS/ https://doi.org/10.1016/B978-0-12-819109-5.00009-8 Sí isbn: 978-0-12-819109-5 Antarctic Climate Evolution 7: 297-361 (2022) http://hdl.handle.net/10261/359725 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/B978-0-12-819109-5.00009-8 |
container_start_page |
297 |
op_container_end_page |
361 |
_version_ |
1802651392414842880 |