Increased dust deposition in the Parece Vela Basin since the mid- Pleistocene inferred from radiogenic Sr and Nd isotopes

doi:10.1016/j.gloplacha.2018.12.011

	Increased dust deposition in the Parece Vela Basin since the mid- Pleistocene inferred from radiogenic Sr and Nd isotopes
	Jiang, Fuqing 1,2; Zhu, Xiao 1,3; Li, Tiegang 2,4; Zhou, Yu 5; Xiong, Zhifang 2,4; Feng, Xuguang 1,3; Yin, Xuebo 1; Li, Anchun 1
刊名	GLOBAL AND PLANETARY CHANGE
	2019-02
卷号	173 页码:83-95
关键词	Asian dust Sr and Nd isotopes Parece Vela Basin Mid-Pleistocene transition
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2018.12.011
英文摘要	Eolian dust deposition is crucial to paleoclimate reconstructions of dust source areas and may have played an important role in the climate during the mid-Pleistocene transition (MPT). Here, we present the radiogenic Sr and Nd isotopic composition and excess barium (Ba-xs) of a sediment core that was recovered from the Parece Vela Basin (PVB) in the northwestern Pacific. The new record indicates that these detrital sediments are primarily composed of dust from western and central Chinese deserts and volcanic materials from the islands in and around the PVB. A two end-member Sr isotope model was applied to distinguish Asian dust from volcanic materials and to reconstruct the mass accumulation rates (MARs) of dust over the last 2.1 Myr. Starting at similar to 1.2 Myr, the dust MARs doubled relative to those in the Early Pleistocene, which was coupled with the frequent congruence of minimum eccentricity and low obliquity. We argue that the congruent minimum eccentricity and low obliquity may have triggered the climate change before and during the MPT and resulted in the aridity of East Asia and increased dust input. The coupling of dust MAR, Ba-xs, MAR and atmospheric CO2 concentration and their rapid increase since the MPT strongly suggest that the internal positive feedback of dust input might be another mechanism behind dust input to the PVB since the MPT.
资助项目	Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0205]
WOS关键词	TIBETAN PLATEAU UPLIFT ; MARIANA TROUGH BASALTS ; WESTERN PHILIPPINE SEA ; CHINESE LOESS PLATEAU ; LAMINATED DIATOM MATS ; NORTH PACIFIC ; DEEP-SEA ; TRACE-ELEMENT ; GRAIN-SIZE ; SUBDUCTION COMPONENTS
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457512400009
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25521]
专题	自然资源部第一海洋研究所
通讯作者	Jiang, Fuqing
作者单位	1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.State Ocean Adm, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China 5.Sichuan Inst Geol Engn Invest, Chengdu 610072, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Fuqing,Zhu, Xiao,Li, Tiegang,et al. Increased dust deposition in the Parece Vela Basin since the mid- Pleistocene inferred from radiogenic Sr and Nd isotopes[J]. GLOBAL AND PLANETARY CHANGE,2019,173:83-95.
APA	Jiang, Fuqing.,Zhu, Xiao.,Li, Tiegang.,Zhou, Yu.,Xiong, Zhifang.,...&Li, Anchun.(2019).Increased dust deposition in the Parece Vela Basin since the mid- Pleistocene inferred from radiogenic Sr and Nd isotopes.GLOBAL AND PLANETARY CHANGE,173,83-95.
MLA	Jiang, Fuqing,et al."Increased dust deposition in the Parece Vela Basin since the mid- Pleistocene inferred from radiogenic Sr and Nd isotopes".GLOBAL AND PLANETARY CHANGE 173(2019):83-95.