中国科学院机构知识库网格系统: Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones

Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones

文献类型：期刊论文


作者	Shi, Guanghai 1,2; Jiang, Neng 2; Wang, Yuwang 1; Zhao, Xin 1; Wang, Xia 1; Li, Guowu 1; Ng, Enoch 1; Cui, Wenyuan 3
刊名	EUROPEAN JOURNAL OF MINERALOGY
出版日期	2010-03-01
卷号	22 期号:2 页码:199-214
关键词	Celsian Hyalophane Jadeitite Ba-enrichment Subduction Myanmar Cymrite
ISSN号	0935-1221
DOI	10.1127/0935-1221/2010/0022-1998
文献子类	Article
英文摘要	Barium (Ba) minerals identified in clinopyroxene rocks from the Myanmar jadeitite area include celsian, hyalophane, and hydrated barium aluminum silicate (an inferred barian zeolite). The hyalophane and hydrated barium aluminum silicate occur as interstitial phases and sometimes crosscut jadeite crystals, indicating they were formed at a later stage than jadeitite. The celsian has two modes of occurrence: (i) in association with jadeite in jadeitite; (ii) as a single-phase mineral forming part of multi-phase pseudomorphs in chromian omphacite rock (omphacitite). The latter rock type was formed predominantly during the same episode as the jadeitite under almost the same P-T conditions. Multi-phase pseudomorphs, mostly showing hexagonal form, contain celsian and kaolinite, with or without quartz, graphite and diaspore. The P-T condition constraints on celsian suggest that a precursor phase, probably cymrite, once existed under high-pressure conditions, and that celsian was formed by decomposition of the phase under decreasing pressure during uplift of the jadeitite. The frequent occurrence of Ba silicates in jadeitites worldwide reflects a Ba-enriched environment for the formation of jadeitite, which is inferred to be related to subducted barite-bearing slab sediments. Therefore, the jadeitite records metasomatism and metamorphism, as well as fluid interactions and phase changes in the BaO-Al(2)O(3)-SiO(2)-H(2)O system. In this way, jadeitite provides information on Ba phase transformations and Ba recycling within the subduction zone. Taken together with previous results, this study further suggests that jadeite-forming fluids are derived from the dehydration of the altered oceanic slab containing deep-sea sediments.
WOS关键词	ITOIGAWA-OHMI-DISTRICT ; MOTAGUA FAULT ZONE ; EASTERN HIMALAYAN SYNTAXIS ; TRACE-ELEMENT ; METAMORPHIC BELT ; HIGH-PRESSURE ; NORTHWESTERN MYANMAR ; CHEMICAL-COMPOSITION ; SURROUNDING REGIONS ; NIIGATA PREFECTURE
WOS研究方向	Mineralogy
语种	英语
WOS记录号	WOS:000276812200004
出版者	E SCHWEIZERBARTSCHE VERLAGS
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/132A11/73084]
专题	中国科学院地质与地球物理研究所
通讯作者	Shi, Guanghai
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 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Shi, Guanghai,Jiang, Neng,Wang, Yuwang,et al. Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones[J]. EUROPEAN JOURNAL OF MINERALOGY,2010,22(2):199-214.
APA	Shi, Guanghai.,Jiang, Neng.,Wang, Yuwang.,Zhao, Xin.,Wang, Xia.,...&Cui, Wenyuan.(2010).Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones.EUROPEAN JOURNAL OF MINERALOGY,22(2),199-214.
MLA	Shi, Guanghai,et al."Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones".EUROPEAN JOURNAL OF MINERALOGY 22.2(2010):199-214.

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来源：地质与地球物理研究所

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Ba minerals in clinopyroxene rocks from the Myanmar jadeitite area: implications for Ba recycling in subduction zones

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