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Zircon Hf isotope signature of the depleted mantle in the Myanmar jadeitite: Implications for Mesozoic intra-oceanic subduction between the Eastern Indian Plate and the Burmese Platelet

文献类型：期刊论文

作者Shi, Guang-Hai1,2; Jiang, Neng2; Liu, Yan1; Wang, Xia1; Zhang, Zhi-Yu1; Xu, Yong-Jing1
刊名LITHOS
出版日期2009-10-01
卷号112期号:3-4页码:342-350
关键词Zircon Hf isotope Jadeitite Depleted mantle Myanmar Indo-Burman Range
ISSN号0024-4937
DOI10.1016/j.lithos.2009.03.011
文献子类Article
英文摘要This study systematically investigated the Lu-Hf isotope signatures of zircons in jadeitite from the North Myanmar, which was formed from jadeite-forming hydrothermal fluids and is always sourced in serpentinite as a mark for the subduction zone. Results show that the three group zircons have positive epsilon(Hf)(t) values. Group-I zircons (163.2 +/- 3.3 Ma) have relatively higher (LuHf)-Lu-176-Hf-/177 ratios (>0.0004) and the corresponding epsilon(Hf)(t) values range from 15.5 to 20.0 at t = 163 Ma. In contrast, Group-II zircons (146.5 +/- 3.4 Ma) exhibit highly variable Lu-176/Hf-177 ratios from 0.000027 to 0.001398, but still have epsilon(Hf)(t) values of 15.6 to 18.5 at t = 147 Ma, which resemble to those of the Group-I zircons. The Group-III zircon (122.2 +/- 4.8 Ma) has a Lu-176/Hf-177 ratio of 0.000578 and a epsilon(Hf)(t) value of 15.8 at t = 122 Ma. Such highly positive epsilon(Hf)(t) values for all jadeitite zircons indicate that they were derived from rapid reworking of the very juvenile crust. Therefore, zircon in jadeitite can be used as a valuable mineral to constrain the age of serpentinization/rodingitization, and even the age of formation of ultramafic rock within ophiolites. The results also suggest the presence of the Mesozoic intra-oceanic subduction within the Indo-Burman Range, and further suggest that the hydrothermal fluids were derived from dehydration of seawater-altered oceanic juvenile crust that had been hydrated during and/or after the formation of the oceanic crust, and additionally from serpentine minerals at greater depth. Consequently, the fluids carry the Hf isotope signature of the depleted mantle that can be later imparted to the jadeitite zircons. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词ULTRAHIGH-PRESSURE ECLOGITE ; U-PB AGE ; ITOIGAWA-OHMI DISTRICT ; MOTAGUA FAULT ZONE ; MID-ATLANTIC RIDGE ; LU-HF ; O-ISOTOPE ; NORTHWESTERN MYANMAR ; HIMALAYAN SYNTAXIS ; STANDARD ZIRCONS
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000271389800012
出版者ELSEVIER SCIENCE BV
资助机构National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Basic Research Program of China(2009CB421008) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; National Science Foundation of China(40672046) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771) ; Program for the New Century Excellent Talents in China(NCET-07-0771)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70949]  
专题中国科学院地质与地球物理研究所
通讯作者Shi, Guang-Hai
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Guang-Hai,Jiang, Neng,Liu, Yan,et al. Zircon Hf isotope signature of the depleted mantle in the Myanmar jadeitite: Implications for Mesozoic intra-oceanic subduction between the Eastern Indian Plate and the Burmese Platelet[J]. LITHOS,2009,112(3-4):342-350.
APA Shi, Guang-Hai,Jiang, Neng,Liu, Yan,Wang, Xia,Zhang, Zhi-Yu,&Xu, Yong-Jing.(2009).Zircon Hf isotope signature of the depleted mantle in the Myanmar jadeitite: Implications for Mesozoic intra-oceanic subduction between the Eastern Indian Plate and the Burmese Platelet.LITHOS,112(3-4),342-350.
MLA Shi, Guang-Hai,et al."Zircon Hf isotope signature of the depleted mantle in the Myanmar jadeitite: Implications for Mesozoic intra-oceanic subduction between the Eastern Indian Plate and the Burmese Platelet".LITHOS 112.3-4(2009):342-350.

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