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Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China
Ao, Hong1,2; Dekkers, Mark J.3; Roberts, Andrew P.4; Rohling, Eelco J.4,5; An, Zhisheng1; Liu, Xiaodong1; Jiang, Zhaoxia6; Qiang, Xiaoke1; Xu, Yong7; Chang, Hong1
2018-05-01
发表期刊QUATERNARY RESEARCH
卷号89期号:3页码:619-628
文章类型Article
摘要Pre-Quaternary terrestrial climate variability is less well understood than that during the Quaternary. The continuous eolian Red Clay sequence underlying the well-known Quaternary loess-paleosol sequence on the Chinese Loess Plateau (CLP) provides an opportunity to study pre-Quaternary terrestrial climate variability in East Asia. Here, we present new mineral magnetic records for a recently found Red Clay succession from Shilou area on the eastern CLP, and demonstrate a marked East Asian climate shift across the Miocene-Pliocene boundary (MPB). Pedogenic fine-grained magnetite populations, ranging from superparamagnetic (SP)/single domain (SD) up to small pseudo-single domain (PSD) sizes (i.e., from <30 nm up to similar to 1000 nm), dominate the magnetic properties. Importantly, our mineral magnetic results indicate that both pedogenic formation of SP grains and transformation of SP grains to SD and small PSD grains accelerated across the MPB in the Shilou Red Clay, which are indicative of enhanced pedogenesis. We relate this enhanced pedogenesis to increased soil moisture availability on the CLP, associated with stronger Asian Summer Monsoon precipitation during an overall period of global cooling. Our study thus provides new insights into the Miocene-Pliocene climate transition in East Asia.
关键词Environmental Magnetism Chinese Loess Plateau Red Clay Paleoclimate Asian Summer Monsoon Miocene-pliocene Transition
WOS标题词Science & Technology ; Physical Sciences
DOI10.1017/qua.2017.77
关键词[WOS]EAST-ASIAN MONSOON ; RED CLAY SEQUENCE ; REVERSAL CURVE DIAGRAMS ; PALEOSOL SEQUENCES ; PALEOCLIMATIC SIGNIFICANCE ; LOESS/PALEOSOL SEQUENCE ; HIMALAYAN FORELAND ; TIBETAN PLATEAU ; 7 MA ; SUSCEPTIBILITY
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000432179700002
引用统计
被引频次:8[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/361006/5130
专题古环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.Columbia Univ, Lamont Doherty Earth Observ, New York, NY 10964 USA
3.Univ Utrecht, Fac Geosci, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
4.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia
5.Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
7.China Geol Survey, Xian Ctr Geol Survey, Xian 710054, Shaanxi, Peoples R China
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Ao, Hong,Dekkers, Mark J.,Roberts, Andrew P.,et al. Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China[J]. QUATERNARY RESEARCH,2018,89(3):619-628.
APA Ao, Hong.,Dekkers, Mark J..,Roberts, Andrew P..,Rohling, Eelco J..,An, Zhisheng.,...&Chang, Hong.(2018).Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China.QUATERNARY RESEARCH,89(3),619-628.
MLA Ao, Hong,et al."Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China".QUATERNARY RESEARCH 89.3(2018):619-628.
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