Climate-Driven Weathering Shifts Between Highlands and Floodplains

doi:10.1029/2020GC008936

IOCAS-IR > 海洋地质与环境重点实验室

	Climate-Driven Weathering Shifts Between Highlands and Floodplains
	Yu, Zhaojie 1,2,3; Colin, Christophe 4; Bassinot, Franck 5; Wan, Shiming1,2,3 ; Bayon, Germain 6
	2020-07-01
发表期刊	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
卷号	21 期号:7 页码:16
通讯作者	Yu, Zhaojie([email protected])
摘要	Chemical 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.
关键词	climate change continental weathering highlands and floodplains carbon cycle Himalaya
DOI	10.1029/2020GC008936
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000557248500032
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/168142
专题	海洋地质与环境重点实验室
通讯作者	Yu, Zhaojie
作者单位	1.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
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 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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