Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene

H. Jiang; J. Zhang; S. Zhang; N. Zhong; S. Wan; G. I. Alsop; H. Xu; Q. Guo; Z. Yan

doi:10.1029/2021GL096832

Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene

H. Jiang^* (Corresponding Author), J. Zhang, S. Zhang, N. Zhong, S. Wan, G. I. Alsop, H. Xu, Q. Guo, Z. Yan

^*Corresponding author for this work

Geology and Geophysics

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Abstract

Abstract Palaeogene environmental evolution in East Asia remains ambiguous. Here we present integrative work including magnetostratigraphy, grain-size, geochemistry, and clay mineralalogy from a 1609-m-thick fluviolacustrine sequence in eastern China. The results reveal two periods of tectonic control alternating with three periods of climatic control on the sedimentary evolution. Tectonic activity in the study area, as revealed by particle coarsening and reduced weathering, occurred during 65.6-59 Ma and strengthened in Asia during 55-54 Ma in response to the India-Eurasia collision. Weathering gradually enhanced in East Asia during 59-55 Ma, probably caused by global warming. Continuous global warming during 54-50.5 Ma is responsible for enhanced aridification in East Asia. From 50.5 to 37.6 Ma, global cooling weakened evapotranspiration and increased westerlies-derived moisture. Both aspects increased effective moisture and chemical weathering in East Asia. These results shed light on how alternating tectonism and climate change impacted environmental evolution in Asia during the Palaeogene.

Original language	English
Article number	e2021GL096832
Number of pages	11
Journal	Geophysical Research Letters
Volume	49
Issue number	3
Early online date	24 Jan 2022
DOIs	https://doi.org/10.1029/2021GL096832
Publication status	Published - 16 Feb 2022

Bibliographical note

Acknowledgments
This work is financially supported by the National Natural Science Foundation of
China (41572346) and National Nonprofit Fundamental Research Grant of China,
Institute of Geology, China Earthquake Administration (IGCEA1906). We feel
grateful to Prof. Jin Meng, Prof. Peter D. Clift, and Dr. Jessica A. Thompson Jobe
for the valuable comments and constructive suggestions. We thank Dr. Zuolin
Chen and Ms Xue Mao for assistance in the field, and Ms Yanhao Li and Mr
Youliang Bai for help in the laboratory. We appreciate Prof. Lucy Flesch (editor)
for handling our manuscript and two anonymous reviewers for constructive reviews

Keywords

Fluviolacustrine sediments
Palaeogene
East Asia
Environmental evolution
Tectonism
Climate change

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1029/2021GL096832Licence: Unspecified

Jiang_etal_GRL_Tectonic_And_Climatic_VoR
© 2022. American Geophysical Union.All Rights Reserved. Jiang, H., Zhang, J., Zhang, S., Zhong, N., Wan, S., Alsop, G. I., et al. (2022). Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene. Geophysical Research Letters, 49, e2021GL096832. https://doi.org/10.1029/2021GL096832
Final published version, 3.36 MBLicence: Other

Cite this

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title = "Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene",

abstract = "Abstract Palaeogene environmental evolution in East Asia remains ambiguous. Here we present integrative work including magnetostratigraphy, grain-size, geochemistry, and clay mineralalogy from a 1609-m-thick fluviolacustrine sequence in eastern China. The results reveal two periods of tectonic control alternating with three periods of climatic control on the sedimentary evolution. Tectonic activity in the study area, as revealed by particle coarsening and reduced weathering, occurred during 65.6-59 Ma and strengthened in Asia during 55-54 Ma in response to the India-Eurasia collision. Weathering gradually enhanced in East Asia during 59-55 Ma, probably caused by global warming. Continuous global warming during 54-50.5 Ma is responsible for enhanced aridification in East Asia. From 50.5 to 37.6 Ma, global cooling weakened evapotranspiration and increased westerlies-derived moisture. Both aspects increased effective moisture and chemical weathering in East Asia. These results shed light on how alternating tectonism and climate change impacted environmental evolution in Asia during the Palaeogene.",

keywords = "Fluviolacustrine sediments, Palaeogene, East Asia, Environmental evolution, Tectonism, Climate change",

author = "H. Jiang and J. Zhang and S. Zhang and N. Zhong and S. Wan and Alsop, {G. I.} and H. Xu and Q. Guo and Z. Yan",

note = "Acknowledgments This work is financially supported by the National Natural Science Foundation of China (41572346) and National Nonprofit Fundamental Research Grant of China, Institute of Geology, China Earthquake Administration (IGCEA1906). We feel grateful to Prof. Jin Meng, Prof. Peter D. Clift, and Dr. Jessica A. Thompson Jobe for the valuable comments and constructive suggestions. We thank Dr. Zuolin Chen and Ms Xue Mao for assistance in the field, and Ms Yanhao Li and Mr Youliang Bai for help in the laboratory. We appreciate Prof. Lucy Flesch (editor) for handling our manuscript and two anonymous reviewers for constructive reviews",

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T1 - Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene

AU - Jiang, H.

AU - Zhang, J.

AU - Zhang, S.

AU - Zhong, N.

AU - Wan, S.

AU - Alsop, G. I.

AU - Xu, H.

AU - Guo, Q.

AU - Yan, Z.

N1 - Acknowledgments This work is financially supported by the National Natural Science Foundation of China (41572346) and National Nonprofit Fundamental Research Grant of China, Institute of Geology, China Earthquake Administration (IGCEA1906). We feel grateful to Prof. Jin Meng, Prof. Peter D. Clift, and Dr. Jessica A. Thompson Jobe for the valuable comments and constructive suggestions. We thank Dr. Zuolin Chen and Ms Xue Mao for assistance in the field, and Ms Yanhao Li and Mr Youliang Bai for help in the laboratory. We appreciate Prof. Lucy Flesch (editor) for handling our manuscript and two anonymous reviewers for constructive reviews

PY - 2022/2/16

Y1 - 2022/2/16

N2 - Abstract Palaeogene environmental evolution in East Asia remains ambiguous. Here we present integrative work including magnetostratigraphy, grain-size, geochemistry, and clay mineralalogy from a 1609-m-thick fluviolacustrine sequence in eastern China. The results reveal two periods of tectonic control alternating with three periods of climatic control on the sedimentary evolution. Tectonic activity in the study area, as revealed by particle coarsening and reduced weathering, occurred during 65.6-59 Ma and strengthened in Asia during 55-54 Ma in response to the India-Eurasia collision. Weathering gradually enhanced in East Asia during 59-55 Ma, probably caused by global warming. Continuous global warming during 54-50.5 Ma is responsible for enhanced aridification in East Asia. From 50.5 to 37.6 Ma, global cooling weakened evapotranspiration and increased westerlies-derived moisture. Both aspects increased effective moisture and chemical weathering in East Asia. These results shed light on how alternating tectonism and climate change impacted environmental evolution in Asia during the Palaeogene.

AB - Abstract Palaeogene environmental evolution in East Asia remains ambiguous. Here we present integrative work including magnetostratigraphy, grain-size, geochemistry, and clay mineralalogy from a 1609-m-thick fluviolacustrine sequence in eastern China. The results reveal two periods of tectonic control alternating with three periods of climatic control on the sedimentary evolution. Tectonic activity in the study area, as revealed by particle coarsening and reduced weathering, occurred during 65.6-59 Ma and strengthened in Asia during 55-54 Ma in response to the India-Eurasia collision. Weathering gradually enhanced in East Asia during 59-55 Ma, probably caused by global warming. Continuous global warming during 54-50.5 Ma is responsible for enhanced aridification in East Asia. From 50.5 to 37.6 Ma, global cooling weakened evapotranspiration and increased westerlies-derived moisture. Both aspects increased effective moisture and chemical weathering in East Asia. These results shed light on how alternating tectonism and climate change impacted environmental evolution in Asia during the Palaeogene.

KW - Fluviolacustrine sediments

KW - Palaeogene

KW - East Asia

KW - Environmental evolution

KW - Tectonism

KW - Climate change

U2 - 10.1029/2021GL096832

DO - 10.1029/2021GL096832

M3 - Article

SN - 0094-8276

VL - 49

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 3

M1 - e2021GL096832

ER -

Tectonic and climatic impacts on environmental evolution in East Asia during the Palaeogene

Abstract

Bibliographical note

Keywords

UN SDGs

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