Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation

doi:10.1029/2022GL102264

IOCAS-IR > 海洋地质与环境重点实验室

	Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation
	Guo, Pengyuan 1,2; Niu, Yaoling 2; Sun, Pu1,2 ; Chen, Shuo 1,2; Chen, Yanhong 3; Duan, Meng 1,2; Wang, Xiaohong 1,2; Gong, Hongmei 1,2
	2023-07-28
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
卷号	50 期号:14 页码:10
通讯作者	Guo, Pengyuan([email protected])
摘要	The upper mantle is heterogeneous in Fe isotope compositions, but the origin of the heterogeneity needs understanding. Recent studies on oceanic basalts demonstrate that the upper mantle Fe isotope heterogeneity results from low-degree melt metasomatism. However, whether this hypothesis is of global significance needs testing in continental settings. Here we present an Fe isotopic study on intraplate continental alkali basalts from continental China, which are shown to have derived from upper mantle containing more metasomatized lithologies. The results show first-order positive correlations of delta Fe-56 with indices of low-degree melt metasomatism (e.g., [La/Sm](N)), which, together with the so-far published mid-ocean ridge basalts data, define global trends, substantiating the global significance of low-degree melt metasomatism in causing upper mantle Fe isotope variation. We, thus, suggest that low-degree melt metasomatism is a globally effective process to preferentially concentrate heavy Fe isotopes in metasomatic lithologies at upper mantle conditions both today and in Earth's history.
关键词	mantle metasomatism upper mantle Fe isotope fractionation continental alkali basalt
DOI	10.1029/2022GL102264
收录类别	SCI
语种	英语
资助项目	We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[42076048]; We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[91958215]; We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[41776067]; National Natural Science Foundation of China
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001093766900001
出版者	AMER GEOPHYSICAL UNION
WOS关键词	OCEAN ISLAND BASALTS ; EAST PACIFIC RISE ; CENOZOIC BASALTS ; CHEMICAL-COMPOSITION ; CHINA EVIDENCE ; BENEATH ; HETEROGENEITY ; GEOCHEMISTRY ; CRUST ; MORB
引用统计	被引频次：1[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/337002/181599
专题	海洋地质与环境重点实验室
通讯作者	Guo, Pengyuan
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Laoshan Lab, Qingdao, Peoples R China 3.China Univ Geosci, Sch Ocean Sci, Beijing, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Guo, Pengyuan,Niu, Yaoling,Sun, Pu,et al. Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(14):10.
APA	Guo, Pengyuan.,Niu, Yaoling.,Sun, Pu.,Chen, Shuo.,Chen, Yanhong.,...&Gong, Hongmei.(2023).Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation.GEOPHYSICAL RESEARCH LETTERS,50(14),10.
MLA	Guo, Pengyuan,et al."Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation".GEOPHYSICAL RESEARCH LETTERS 50.14(2023):10.