Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition
The first major build-up of Antarctic glaciation occurred in two consecutive stages across the Eocene–Oligocene transition (EOT): the EOT-1 cooling event at ~34.1–33.9 Ma and the Oi-1 glaciation event at ~33.8–33.6 Ma. Detailed orbital-scale terrestrial environmental responses to these events remain...
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ftsouthampton:oai:eprints.soton.ac.uk:444771 2023-07-30T03:59:23+02:00 Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition Ao, Hong Dupont-nivet, Guillaume Rohling, Eelco J. Zhang, Peng Ladant, Jean-baptiste Roberts, Andrew P. Licht, Alexis Liu, Qingsong Liu, Zhonghui Dekkers, Mark J. Coxall, Helen K. Jin, Zhangdong Huang, Chunju Xiao, Guoqiao Poulsen, Christopher J. Barbolini, Natasha Meijer, Niels Sun, Qiang Qiang, Xiaoke Yao, Jiao An, Zhisheng 2020-12-01 text https://eprints.soton.ac.uk/444771/ https://eprints.soton.ac.uk/444771/1/s41467_020_18824_8.pdf en English eng https://eprints.soton.ac.uk/444771/1/s41467_020_18824_8.pdf Ao, Hong, Dupont-nivet, Guillaume, Rohling, Eelco J., Zhang, Peng, Ladant, Jean-baptiste, Roberts, Andrew P., Licht, Alexis, Liu, Qingsong, Liu, Zhonghui, Dekkers, Mark J., Coxall, Helen K., Jin, Zhangdong, Huang, Chunju, Xiao, Guoqiao, Poulsen, Christopher J., Barbolini, Natasha, Meijer, Niels, Sun, Qiang, Qiang, Xiaoke, Yao, Jiao and An, Zhisheng (2020) Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition. Nature Communications, 11 (1), [5249]. (doi:10.1038/s41467-020-18824-8 <http://dx.doi.org/10.1038/s41467-020-18824-8>). cc_by_4 Article PeerReviewed 2020 ftsouthampton https://doi.org/10.1038/s41467-020-18824-8 2023-07-09T22:39:19Z The first major build-up of Antarctic glaciation occurred in two consecutive stages across the Eocene–Oligocene transition (EOT): the EOT-1 cooling event at ~34.1–33.9 Ma and the Oi-1 glaciation event at ~33.8–33.6 Ma. Detailed orbital-scale terrestrial environmental responses to these events remain poorly known. Here we present magnetic and geochemical climate records from the northeastern Tibetan Plateau margin that are dated precisely from ~35.5 to 31 Ma by combined magneto- and astro-chronology. These records suggest a hydroclimate transition at ~33.7 Ma from eccentricity dominated cycles to oscillations paced by a combination of eccentricity, obliquity, and precession, and confirm that major Asian aridification and cooling occurred at Oi-1. We conclude that this terrestrial orbital response transition coincided with a similar transition in the marine benthic δ18O record for global ice volume and deep-sea temperature variations. The dramatic reorganization of the Asian climate system coincident with Oi-1 was, thus, a response to coeval atmospheric CO2 decline and continental-scale Antarctic glaciation. Article in Journal/Newspaper Antarc* Antarctic University of Southampton: e-Prints Soton Antarctic Nature Communications 11 1 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
The first major build-up of Antarctic glaciation occurred in two consecutive stages across the Eocene–Oligocene transition (EOT): the EOT-1 cooling event at ~34.1–33.9 Ma and the Oi-1 glaciation event at ~33.8–33.6 Ma. Detailed orbital-scale terrestrial environmental responses to these events remain poorly known. Here we present magnetic and geochemical climate records from the northeastern Tibetan Plateau margin that are dated precisely from ~35.5 to 31 Ma by combined magneto- and astro-chronology. These records suggest a hydroclimate transition at ~33.7 Ma from eccentricity dominated cycles to oscillations paced by a combination of eccentricity, obliquity, and precession, and confirm that major Asian aridification and cooling occurred at Oi-1. We conclude that this terrestrial orbital response transition coincided with a similar transition in the marine benthic δ18O record for global ice volume and deep-sea temperature variations. The dramatic reorganization of the Asian climate system coincident with Oi-1 was, thus, a response to coeval atmospheric CO2 decline and continental-scale Antarctic glaciation. |
format |
Article in Journal/Newspaper |
author |
Ao, Hong Dupont-nivet, Guillaume Rohling, Eelco J. Zhang, Peng Ladant, Jean-baptiste Roberts, Andrew P. Licht, Alexis Liu, Qingsong Liu, Zhonghui Dekkers, Mark J. Coxall, Helen K. Jin, Zhangdong Huang, Chunju Xiao, Guoqiao Poulsen, Christopher J. Barbolini, Natasha Meijer, Niels Sun, Qiang Qiang, Xiaoke Yao, Jiao An, Zhisheng |
spellingShingle |
Ao, Hong Dupont-nivet, Guillaume Rohling, Eelco J. Zhang, Peng Ladant, Jean-baptiste Roberts, Andrew P. Licht, Alexis Liu, Qingsong Liu, Zhonghui Dekkers, Mark J. Coxall, Helen K. Jin, Zhangdong Huang, Chunju Xiao, Guoqiao Poulsen, Christopher J. Barbolini, Natasha Meijer, Niels Sun, Qiang Qiang, Xiaoke Yao, Jiao An, Zhisheng Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
author_facet |
Ao, Hong Dupont-nivet, Guillaume Rohling, Eelco J. Zhang, Peng Ladant, Jean-baptiste Roberts, Andrew P. Licht, Alexis Liu, Qingsong Liu, Zhonghui Dekkers, Mark J. Coxall, Helen K. Jin, Zhangdong Huang, Chunju Xiao, Guoqiao Poulsen, Christopher J. Barbolini, Natasha Meijer, Niels Sun, Qiang Qiang, Xiaoke Yao, Jiao An, Zhisheng |
author_sort |
Ao, Hong |
title |
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
title_short |
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
title_full |
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
title_fullStr |
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
title_full_unstemmed |
Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition |
title_sort |
orbital climate variability on the northeastern tibetan plateau across the eocene–oligocene transition |
publishDate |
2020 |
url |
https://eprints.soton.ac.uk/444771/ https://eprints.soton.ac.uk/444771/1/s41467_020_18824_8.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://eprints.soton.ac.uk/444771/1/s41467_020_18824_8.pdf Ao, Hong, Dupont-nivet, Guillaume, Rohling, Eelco J., Zhang, Peng, Ladant, Jean-baptiste, Roberts, Andrew P., Licht, Alexis, Liu, Qingsong, Liu, Zhonghui, Dekkers, Mark J., Coxall, Helen K., Jin, Zhangdong, Huang, Chunju, Xiao, Guoqiao, Poulsen, Christopher J., Barbolini, Natasha, Meijer, Niels, Sun, Qiang, Qiang, Xiaoke, Yao, Jiao and An, Zhisheng (2020) Orbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition. Nature Communications, 11 (1), [5249]. (doi:10.1038/s41467-020-18824-8 <http://dx.doi.org/10.1038/s41467-020-18824-8>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1038/s41467-020-18824-8 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
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1772810173831708672 |