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Implication of boron isotope geochemistry for the pedogenic environments in loess and paleosol sequences of central China
Wei, Hai-Zhen1; Lei, Fang2; Jiang, Shao-Yong1,3; Lu, Hua-Yu2; Xiao, Ying-Kai4; Zhang, Han-Zhi2; Sun, Xue-Feng2
2015
Source PublicationQUATERNARY RESEARCH
Volume83Issue:1Pages:243-255
SubtypeArticle
AbstractWe investigated the boron isotopic composition in loess-paleosol sequences in five different profiles in the Chinese Loess Plateau. Three possible boron sources are identified: atmospheric input, carbonates, and weathered silicate rocks. Variations of [Sr], [B], delta B-11 and the magnetic susceptibility correlate well with the pedogenetic intensity in three out of the five studied profiles, where pedogenesis under a cold-dry climate indicates lower delta B-11, lower [B], lower magnetic susceptibility and higher [Sr] values. Exceptions to the variations between the delta B-11 and other known proxies were observed in arenaceous soils and the Red Clay sequence: the former suggested that vertical redistribution probably occurred with the boron migration, and the latter indicated an unknown mechanism of susceptibility enhancement. A better correlation between the delta B-11 and magnetic susceptibility and the quantitative estimation of boron budget from each source confirms the influence of paleoenvironmental changes on boron geochemical cycle. Significant positive correlations in Sr/Ca vs. B/Ca and Mg/Ca vs. B/Ca reflect consistent enrichment behavior of those mobile elements into calcium carbonate. The preliminary results imply that boron isotopic compositions in soils can be a potential geochemical proxy to reconstruct the paleoenvironmental changes in loess-paleosol sequences. (C) 2014 University of Washington. Published by Elsevier Inc. All rights reserved.
KeywordBoron Isotopic Composition Loess-paleosol Sequences Pedogenesis Environment Loess Plateau China
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordMAGNETIC-SUSCEPTIBILITY ; NORTH-ATLANTIC ; PH ; FRACTIONATION ; DEPOSITS ; OCEAN ; ADSORPTION ; MONSOON ; PLATEAU ; SOILS
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000349276300020
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5744
Collection青海盐湖研究所知识仓储
Affiliation1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Sch Geog & Oceanog Sci, Jiangsu Collaborat Innovat Ctr Climate Change, Nanjing 210093, Jiangsu, Peoples R China
3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Fac Earth Resources, Wuhan 430074, Peoples R China
4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810003, Peoples R China
Recommended Citation
GB/T 7714
Wei, Hai-Zhen,Lei, Fang,Jiang, Shao-Yong,et al. Implication of boron isotope geochemistry for the pedogenic environments in loess and paleosol sequences of central China[J]. QUATERNARY RESEARCH,2015,83(1):243-255.
APA Wei, Hai-Zhen.,Lei, Fang.,Jiang, Shao-Yong.,Lu, Hua-Yu.,Xiao, Ying-Kai.,...&Sun, Xue-Feng.(2015).Implication of boron isotope geochemistry for the pedogenic environments in loess and paleosol sequences of central China.QUATERNARY RESEARCH,83(1),243-255.
MLA Wei, Hai-Zhen,et al."Implication of boron isotope geochemistry for the pedogenic environments in loess and paleosol sequences of central China".QUATERNARY RESEARCH 83.1(2015):243-255.
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