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Magnesium Isotopic Evidence for Ancient Subducted Oceanic Crust in LOMU-Like Potassium-Rich Volcanic Rocks

文献类型：期刊论文

作者Sun, Yang1,2; Teng, Fang-Zhen3; Ying, Ji-Feng2; Su, Ben-Xun2; Hu, Yan3; Fan, Qi-Cheng4; Zhou, Xin-Hua2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2017-10-01
卷号122期号:10页码:7562-7572
关键词Magnesium Isotopes Carbonated Eclogite Potassium-rich Volcanic Rocks Lomu Northeast China
ISSN号2169-9313
DOI10.1002/2017JB014560
文献子类Article
英文摘要To evaluate the role of subducted oceanic crust in the genesis of potassium-rich magmas, we report high-precision Mg isotopic data for a set of Cenozoic volcanic rocks from Northeast China. These rocks overall are lighter in Mg isotopic composition than the normal mantle and display considerable Mg isotopic variations, with Mg-26 ranging from -0.61 to -0.23. The covariation of Mg-26 with TiO2 in these rocks suggests that their light Mg isotopic compositions were derived from recycled oceanic crust in the form of carbonated eclogite in the source region. The strong correlations between Mg-26 and (Gd/Yb)(N) ratio as well as Sr-Pb isotopes further indicate a multicomponent and multistage origin of these rocks. Magnesium isotopes may thus be used as a novel tracer of recycled oceanic crust in the source region of mantle-derived magmas.
WOS关键词ULTRAPOTASSIC IGNEOUS ROCKS ; PARTIAL MELTING EXPERIMENTS ; PLASMA-MASS SPECTROMETRY ; NORTHEAST CHINA ; LITHOSPHERIC MANTLE ; NE CHINA ; CONTINENTAL BASALTS ; CENOZOIC BASALTS ; ISLAND BASALTS ; EASTERN CHINA
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000418577900004
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; 41173045) ; 41173045) ; 41173045) ; 41173045) ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; 41173045) ; 41173045) ; 41173045) ; 41173045) ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; 41173045) ; 41173045) ; 41173045) ; 41173045) ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Natural Science Foundation of China(91214203 ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; National Science Foundation(EAR-1747706) ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; 41173045) ; 41173045) ; 41173045) ; 41173045)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82330]  
专题中国科学院地质与地球物理研究所
通讯作者Sun, Yang; Teng, Fang-Zhen
作者单位1.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
3.Univ Washington, Dept Earth & Space Sci, Isotope Lab, Seattle, WA 98195 USA
4.China Earthquake Adm, Inst Geol, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Yang,Teng, Fang-Zhen,Ying, Ji-Feng,et al. Magnesium Isotopic Evidence for Ancient Subducted Oceanic Crust in LOMU-Like Potassium-Rich Volcanic Rocks[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2017,122(10):7562-7572.
APA Sun, Yang.,Teng, Fang-Zhen.,Ying, Ji-Feng.,Su, Ben-Xun.,Hu, Yan.,...&Zhou, Xin-Hua.(2017).Magnesium Isotopic Evidence for Ancient Subducted Oceanic Crust in LOMU-Like Potassium-Rich Volcanic Rocks.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,122(10),7562-7572.
MLA Sun, Yang,et al."Magnesium Isotopic Evidence for Ancient Subducted Oceanic Crust in LOMU-Like Potassium-Rich Volcanic Rocks".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 122.10(2017):7562-7572.

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来源：地质与地球物理研究所

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