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Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications
Zhao, Hui1,2; Sun, Youbin2; Qiang, Xiaoke2
2017-02-15
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
卷号468期号:2017页码:162-172
文章类型Article
摘要The middle Miocene climate optimum (MMCO, 14.3-163 Ma) was a warm climatic interval that may provide an analog for future climates in the context of ongoing global warming. In continental regions, however, reconstruction of the MMCO remains controversial due to the lack of robust proxies from continuous sedimentary sequences. In this study, we investigated the composition and relative abundance of pedogenic iron oxides in the Zhuanglang Red Clay deposits from the western Chinese Loess Plateau, using rock magnetic, color reflectance, and geochemical analyses. Our aim was to assess the climatic sensitivity of iron oxides in order to produce robust proxies for reconstructing regional temperature and moisture relationships during the MMCO. Our results indicate that the MMCO in the study region was characterized by high effective precipitation, relatively high temperature and strong pedogenesis, suggesting a strong East Asian summer monsoon (EASM). The strengthening of the EASM intensity during the MMCO is consistent with records of enhanced terrigenous chemical weathering in the South China Sea, and the occurrence of a relatively warm and humid climate on a global scale, implying the strong coupling between Asian monsoon evolution and global climate change during the middle Miocene. In addition, the magnetic susceptibility record of the Zhuanglang Red Clay demonstrates that eccentricity played the dominant role in controlling the EASM during the MMCO. (C) 2016 Elsevier B.V. All rights reserved.
关键词Middle Miocene Climate Optimum Red Clay Iron Oxides Paleoclimate
WOS标题词Science & Technology ; Physical Sciences ; Life Sciences & Biomedicine
DOI10.1016/j.palaeo.2016.12.008
关键词[WOS]TEMPERATURE-DEPENDENT SUSCEPTIBILITY ; MAGNETIC-SUSCEPTIBILITY ; TIBETAN PLATEAU ; ENVIRONMENTAL MAGNETISM ; CLIMATIC OPTIMUM ; HOLOCENE LOESS ; CENTRAL-EUROPE ; ASIAN MONSOON ; ICE-SHEET ; RECORD
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000394919000011
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5512
专题古环境研究室
作者单位1.Shaanxi Normal Univ, Dept Geog, Xian 710062, Peoples R China
2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Peoples R China
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Zhao, Hui,Sun, Youbin,Qiang, Xiaoke. Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,468(2017):162-172.
APA Zhao, Hui,Sun, Youbin,&Qiang, Xiaoke.(2017).Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,468(2017),162-172.
MLA Zhao, Hui,et al."Iron oxide characteristics of mid-Miocene Red Clay deposits on the western Chinese Loess Plateau and their paleoclimatic implications".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 468.2017(2017):162-172.
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