Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China

doi:10.1017/qua.2017.77

	Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China
	Dekkers, Mark J.7; Ao, Hong 2,5; Liu, Xiaodong 2; Roberts, Andrew P.6; Rohling, Eelco J.3,6; An, Zhisheng 2; Xu, Yong 1; Chang, Hong 2; Qiang, Xiaoke 2; Jiang, Zhaoxia 4
刊名	QUATERNARY RESEARCH
	2018-05-01
卷号	89 期号:3 页码:619-628
关键词	Environmental Magnetism Chinese Loess Plateau Red Clay Paleoclimate Asian Summer Monsoon Miocene-pliocene Transition
DOI	10.1017/qua.2017.77
文献子类	Article
英文摘要	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.
WOS关键词	EAST-ASIAN MONSOON ; RED CLAY SEQUENCE ; REVERSAL CURVE DIAGRAMS ; PALEOSOL SEQUENCES ; PALEOCLIMATIC SIGNIFICANCE ; LOESS/PALEOSOL SEQUENCE ; HIMALAYAN FORELAND ; TIBETAN PLATEAU ; 7 MA ; SUSCEPTIBILITY
WOS研究方向	Physical Geography ; Geology
语种	英语
WOS记录号	WOS:000432179700002
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5130]
专题	地球环境研究所_古环境研究室
作者单位	1.China Geol Survey, Xian Ctr Geol Survey, Xian 710054, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 5.Columbia Univ, Lamont Doherty Earth Observ, New York, NY 10964 USA 6.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia 7.Univ Utrecht, Fac Geosci, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands
推荐引用方式 GB/T 7714	Dekkers, Mark J.,Ao, Hong,Liu, Xiaodong,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	Dekkers, Mark J..,Ao, Hong.,Liu, Xiaodong.,Roberts, Andrew P..,Rohling, Eelco J..,...&Jiang, Zhaoxia.(2018).Mineral magnetic record of the Miocene-Pliocene climate transition on the Chinese Loess Plateau, North China.QUATERNARY RESEARCH,89(3),619-628.
MLA	Dekkers, Mark J.,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.