Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma
International audience <jats:p>The relationship between silicate weathering, Tibetan Plateau uplift, and global cooling during the Cenozoic provides a valuable case study for understanding the interaction of tectonics and climate. The Tibetan Plateau uplift is considered to have caused Cenozoi...
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2022
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Online Access: | https://hal.science/hal-03800926 https://hal.science/hal-03800926/document https://hal.science/hal-03800926/file/feart-10-824404.pdf https://doi.org/10.3389/feart.2022.824404 |
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ftinsu:oai:HAL:hal-03800926v1 2023-10-09T21:46:55+02:00 Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma Yang, Yibo Han, Wenxia Ye, Chengcheng Galy, Albert Fang, Xiaomin Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing (CAS) Linyi University Shanghai Normal University (SHNU) Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) University of Chinese Academy of Sciences Beijing (UCAS) 2022-02-23 https://hal.science/hal-03800926 https://hal.science/hal-03800926/document https://hal.science/hal-03800926/file/feart-10-824404.pdf https://doi.org/10.3389/feart.2022.824404 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2022.824404 hal-03800926 https://hal.science/hal-03800926 https://hal.science/hal-03800926/document https://hal.science/hal-03800926/file/feart-10-824404.pdf doi:10.3389/feart.2022.824404 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-6463 Frontiers in Earth Science https://hal.science/hal-03800926 Frontiers in Earth Science, 2022, 10, pp.824404. ⟨10.3389/feart.2022.824404⟩ [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.3389/feart.2022.824404 2023-09-13T16:26:01Z International audience <jats:p>The relationship between silicate weathering, Tibetan Plateau uplift, and global cooling during the Cenozoic provides a valuable case study for understanding the interaction of tectonics and climate. The Tibetan Plateau uplift is considered to have caused Cenozoic cooling via the atmospheric CO<jats:sub>2</jats:sub> drawdown by increased silicate weathering. However, this hypothesis has been intensively debated over the past few decades due to the lack of complete silicate weathering records from the continental interior, which can directly track the effects of uplift on weathering. We provide the first complete long (past 53 Myr) continental silicate weathering record from the NE Tibetan Plateau, combined with a comprehensive analysis on its evolution pattern, critical transitions, and associated driving forces. The silicate weathering intensity in NE Tibet is characterized by a long-term Paleogene decrease, modulated by global cooling, and a Neogene increase that may be related to the East Asian summer monsoon (EASM) intensification. Three major system transitions in regional silicate weathering are identified at ∼26–23 Ma, ∼16 Ma and ∼8 Ma, which are linked to enhanced EASM forced primarily by tectonic uplift at these intervals, with some surbordinate influences from global climate at ∼16 Ma. We also capture an intensification of the 100-kyr cycle at ∼16 Ma and ∼8 Ma in the obtained silicate weathering record, which is in coincidence in time with the enhancement of the EASM. This might suggest some contribution of the Antarctic ice sheets on modulating the regional silicate weathering in the NE Tibetan Plateau on a timescale of 10<jats:sup>5</jats:sup>–10<jats:sup>6</jats:sup> years, through its influences on the EASM as proposed by previous studies.</jats:p> Article in Journal/Newspaper Antarc* Antarctic Institut national des sciences de l'Univers: HAL-INSU Antarctic The Antarctic Frontiers in Earth Science 10 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Yang, Yibo Han, Wenxia Ye, Chengcheng Galy, Albert Fang, Xiaomin Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience <jats:p>The relationship between silicate weathering, Tibetan Plateau uplift, and global cooling during the Cenozoic provides a valuable case study for understanding the interaction of tectonics and climate. The Tibetan Plateau uplift is considered to have caused Cenozoic cooling via the atmospheric CO<jats:sub>2</jats:sub> drawdown by increased silicate weathering. However, this hypothesis has been intensively debated over the past few decades due to the lack of complete silicate weathering records from the continental interior, which can directly track the effects of uplift on weathering. We provide the first complete long (past 53 Myr) continental silicate weathering record from the NE Tibetan Plateau, combined with a comprehensive analysis on its evolution pattern, critical transitions, and associated driving forces. The silicate weathering intensity in NE Tibet is characterized by a long-term Paleogene decrease, modulated by global cooling, and a Neogene increase that may be related to the East Asian summer monsoon (EASM) intensification. Three major system transitions in regional silicate weathering are identified at ∼26–23 Ma, ∼16 Ma and ∼8 Ma, which are linked to enhanced EASM forced primarily by tectonic uplift at these intervals, with some surbordinate influences from global climate at ∼16 Ma. We also capture an intensification of the 100-kyr cycle at ∼16 Ma and ∼8 Ma in the obtained silicate weathering record, which is in coincidence in time with the enhancement of the EASM. This might suggest some contribution of the Antarctic ice sheets on modulating the regional silicate weathering in the NE Tibetan Plateau on a timescale of 10<jats:sup>5</jats:sup>–10<jats:sup>6</jats:sup> years, through its influences on the EASM as proposed by previous studies.</jats:p> |
author2 |
Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing (CAS) Linyi University Shanghai Normal University (SHNU) Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) University of Chinese Academy of Sciences Beijing (UCAS) |
format |
Article in Journal/Newspaper |
author |
Yang, Yibo Han, Wenxia Ye, Chengcheng Galy, Albert Fang, Xiaomin |
author_facet |
Yang, Yibo Han, Wenxia Ye, Chengcheng Galy, Albert Fang, Xiaomin |
author_sort |
Yang, Yibo |
title |
Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
title_short |
Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
title_full |
Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
title_fullStr |
Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
title_full_unstemmed |
Trends and Transitions in Silicate Weathering in the Asian Interior (NE Tibet) Since 53 Ma |
title_sort |
trends and transitions in silicate weathering in the asian interior (ne tibet) since 53 ma |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03800926 https://hal.science/hal-03800926/document https://hal.science/hal-03800926/file/feart-10-824404.pdf https://doi.org/10.3389/feart.2022.824404 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 2296-6463 Frontiers in Earth Science https://hal.science/hal-03800926 Frontiers in Earth Science, 2022, 10, pp.824404. ⟨10.3389/feart.2022.824404⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2022.824404 hal-03800926 https://hal.science/hal-03800926 https://hal.science/hal-03800926/document https://hal.science/hal-03800926/file/feart-10-824404.pdf doi:10.3389/feart.2022.824404 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/feart.2022.824404 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1779309517313409024 |