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  4. 岩石圈演化国家重点实验室
Tracing subducted oceanic slabs in the mantle by using potassium isotopes

文献类型：期刊论文

作者Sun, Yang2,3; Teng, Fang-Zhen1; Hu, Yan1; Chen, Xin-Yang1; Pang, Kwan-Nang2
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2020-06-01
卷号278页码:353-360
关键词Potassium isotopes Subducted oceanic slabs Enriched mantle reservoirs Continental basalts Northeast China
ISSN号0016-7037
DOI10.1016/j.gca.2019.05.013
英文摘要Substantial quantities of oceanic slabs are known to be recycled into the mantle through subduction. However, tracing their fate in the mantle through studies of mantle-derived samples is not always straightforward. As K represents an omnipresent element in subducting crustal materials, its two stable isotopes (K-39 and K-41) display outstanding potential in tracing recycled crustal materials in the mantle. Here we report the first set of K isotopic data for a suite of well-characterized continental basaltic lavas from Northeast China. The delta K-4(1) of these lavas exhibit large variation from -0.81 parts per thousand to -0.15 parts per thousand, compared with the narrow range of unaltered oceanic basalts (-0.43 +/- 0.03 parts per thousand). The isotopic variations, together with geochemical data obtained in earlier studies, cannot be ascribed to chemical weathering, crystal fractionation, crustal contamination, or partial melting, but are consistent with the presence of diverse crustal materials in magma sources. Recycled oceanic crust and sediments both have contributed to the contrasting K isotopic signature observed in these lavas. Our study here highlights the potential of using K isotopes to trace different types of recycled crustal materials in the mantle and places new constraints on the generation of enriched mantle reservoirs. (C) 2019 Elsevier Ltd. All rights reserved.
WOS关键词MC-ICP-MS ; VOLCANIC-ROCKS ; K ISOTOPES ; RIVER AREA ; CRUST ; GEOCHEMISTRY ; ORIGIN ; BASALTS ; PLUMES ; EARTH
资助项目National Natural Science Foundation of China[41703031] ; China Postdoctoral Science Foundation[2017M620899] ; Ministry of Science and Technology, Taiwan, ROC[MOST 105-2628-M-001-002-MY4]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000536445700009
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC ; Ministry of Science and Technology, Taiwan, ROC
源URL[http://ir.iggcas.ac.cn/handle/132A11/96703]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Sun, Yang; Teng, Fang-Zhen
作者单位1.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA
2.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Yang,Teng, Fang-Zhen,Hu, Yan,et al. Tracing subducted oceanic slabs in the mantle by using potassium isotopes[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2020,278:353-360.
APA Sun, Yang,Teng, Fang-Zhen,Hu, Yan,Chen, Xin-Yang,&Pang, Kwan-Nang.(2020).Tracing subducted oceanic slabs in the mantle by using potassium isotopes.GEOCHIMICA ET COSMOCHIMICA ACTA,278,353-360.
MLA Sun, Yang,et al."Tracing subducted oceanic slabs in the mantle by using potassium isotopes".GEOCHIMICA ET COSMOCHIMICA ACTA 278(2020):353-360.

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来源：地质与地球物理研究所

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