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Climate-Driven Weathering Shifts Between Highlands and Floodplains
Yu, Zhaojie1,2,3; Colin, Christophe4; Bassinot, Franck5; Wan, Shiming1,2,3; Bayon, Germain6
Corresponding AuthorYu, Zhaojie(
AbstractChemical weathering of silicate rocks on continents is thought to have played an important role in the evolution of past atmospheric carbon dioxide over geologic timescales. However, the detailed links between continental weathering and climate change over shorter timescales, and their potential impact on sediment records deposited in the ocean, remain poorly understood. Here, we present clay mineralogy and strontium-neodymium isotopic data for marine sediment records from the Northern Indian Ocean, with the aim of investigating the weathering response of large Himalayan river basins to orbital and millennial climate forcing. We show that past glaciated episodes of the late Quaternary corresponded to periods of increased physical erosion, associated with the preferential export of illite and chlorite assemblages from the Himalayan highlands having relatively radiogenic Sr isotopic signatures. In contrast, the warm periods of enhanced monsoon rainfall coincided with the transport of intensively weathered smectite-dominated soils derived from the floodplains, characterized by lower(87)Sr/Sr-86 signatures. This finding suggests that the short-term climatic variability over late Quaternary timescales was accompanied by concomitant changes between high mountain- versus floodplain-dominated weathering regimes, with possible impact on the nature of weathered rocks and, as a consequence, on the carbon cycle.
Keywordclimate change continental weathering highlands and floodplains carbon cycle Himalaya
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[91958107] ; National Natural Science Foundation of China[41806060] ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology[MGQNLM-TD201902] ; Open Fund of the State Key Laboratory of Marine Geology, Tongji University[MGK1919] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2020210] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2018KG01] ; National Research Agency L-IPSL Project[ANR-10-LABX-0018] ; National Research Agency MONOPOL Project[ANR 2011 Blanc SIMI 5-6 024 04]
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000557248500032
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYu, Zhaojie
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
4.Univ Paris Saclay, Univ Paris Sud, Lab GEOsci Paris Sud GEOPS, CNRS,UMR 8148, Orsay, France
5.Univ Paris Saclay, Lab Sci Climat & Environm LSCE IPSL, CEA CNRS UVSQ, Gif Sur Yvette, France
6.IFREMER, Marine Geosci Unit, Plouzane, France
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yu, Zhaojie,Colin, Christophe,Bassinot, Franck,et al. Climate-Driven Weathering Shifts Between Highlands and Floodplains[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2020,21(7):16.
APA Yu, Zhaojie,Colin, Christophe,Bassinot, Franck,Wan, Shiming,&Bayon, Germain.(2020).Climate-Driven Weathering Shifts Between Highlands and Floodplains.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,21(7),16.
MLA Yu, Zhaojie,et al."Climate-Driven Weathering Shifts Between Highlands and Floodplains".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 21.7(2020):16.
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