Barium isotope evidence for pervasive sediment recycling in the upper mantle

doi:10.1126/sciadv.aas8675

IOCAS-IR

	Barium isotope evidence for pervasive sediment recycling in the upper mantle
	Nielsen, Sune G.1,2; Horner, Tristan J.1,3; Pryer, Helena V.1,3; Blusztajn, Jerzy 1,2; Shu, Yunchao 1,2,4,5; Kurz, Mark D.3; Le Roux, Veronique 2
	2018-07-01
发表期刊	SCIENCE ADVANCES
ISSN	2375-2548
卷号	4 期号:7 页码:8
通讯作者	Nielsen, Sune G.([email protected])
摘要	The upper mantle, as sampled by mid-ocean ridge basalts (MORBs), exhibits significant chemical variability unrelated to mechanisms of melt extraction at ridges. We show that barium isotope variations in global MORBs vary systematically with radiogenic isotopes and trace element ratios, which reflects mixing between depleted and enriched MORB melts. In addition, modern sediments and enriched MORBs share similar Ba isotope signatures. Using modeling, we show that addition of-0.1% by weight of sediment components into the depleted mantle in subduction zones must impart a sedimentary Ba signature to the overlying mantle and induce low-degree melting that produces the enriched MORB reservoir. Subsequently, these enriched domains convect toward mid-ocean ridges and produce radiogenic isotope variation typical of enriched MORBs. This mechanism can explain the chemical and isotopic features of enriched MORBs and provide strong evidence for pervasive sediment recycling in the upper mantle.
DOI	10.1126/sciadv.aas8675
收录类别	SCI
语种	英语
资助项目	NSF[EAR-1119373]###1289; NSF[EAR-1427310]###2205; NSF[EAR-1119373]; NSF[EAR-1427310]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000443176100036
出版者	AMER ASSOC ADVANCEMENT SCIENCE
引用统计	被引频次：59[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/160016
专题	中国科学院海洋研究所
通讯作者	Nielsen, Sune G.
作者单位	1.Woods Hole Oceanog Inst, NIRVANA Nontradit Isotope Res Adv Novel Applicat, Woods Hole, MA 02543 USA 2.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA 3.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA 4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Nielsen, Sune G.,Horner, Tristan J.,Pryer, Helena V.,et al. Barium isotope evidence for pervasive sediment recycling in the upper mantle[J]. SCIENCE ADVANCES,2018,4(7):8.
APA	Nielsen, Sune G..,Horner, Tristan J..,Pryer, Helena V..,Blusztajn, Jerzy.,Shu, Yunchao.,...&Le Roux, Veronique.(2018).Barium isotope evidence for pervasive sediment recycling in the upper mantle.SCIENCE ADVANCES,4(7),8.
MLA	Nielsen, Sune G.,et al."Barium isotope evidence for pervasive sediment recycling in the upper mantle".SCIENCE ADVANCES 4.7(2018):8.

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文件名称/大小	文献类型	版本类型	开放类型	使用许可
Barium isotope evide（1063KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览