Discovery of Late Cretaceous garnet two-pyroxene granulite in the southern Lhasa terrane, Tibet and its tectonic significances

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	Discovery of Late Cretaceous garnet two-pyroxene granulite in the southern Lhasa terrane, Tibet and its tectonic significances
	Wang, JL (Wang JinLi); Zhang, ZM (Zhang ZeMing); Dong, X (Dong Xin); Liu, F (Liu Feng); Yu, F (Yu Fei); Wang, W (Wang Wei); Xu, FJ (Xu FangJian); Shen, K (Shen Kun)
刊名	ACTA PETROLOGICA SINICA
	2009
卷号	25 期号:7 页码:1695-1706
关键词	Granulite Andean-type orogeny Late Cretaceous Lhasa terrane Tibetan plateau
ISSN号	1000-0569
英文摘要	The Lhasa terrane, located between the Bangonghu-Nujiang suture zone and the Indus-Yalung Tsangpo suture zone in the southern Tibetan Plateau, was considered previously as a Precambrian continental block. Mesozoic and Cenozoic tectonic evolution of the Lhasa terrane is closely related to the subduction of the Tethys ocean and the collision between the Indian and European continents; so it is one of the keys to reveal the formation and evolution of the Tibetan plateau. The garnet two-pyroxene granulite which was found at the Nyingtri rock group of the southeastern Lhasa terrene consists of garnet, clinopyroxene, orthopyroxene, labradorite, Ti-rich amphibolite and biotite, with a chemical composition of mafic rock. The metamorphic conditions were estimated to be at T = 747 similar to 834 degrees C and P = 0.90 similar to 1.35GPa, suggesting a formation depth of 45km. The zircon U-Pb dating for the garnet amphibolite and marble associated with the granulite give a metamorphic age of 85 similar to 90Ma. This granulite-facies metamorphic event together with a contemporaneous magmatism demonstrated that the southern Lhasa terrane has undergone an Andean-type orogeny at Late Mesozoic time.
学科主题	变质岩岩石学
WOS关键词	EASTERN HIMALAYAN SYNTAXIS ; HIGH-PRESSURE GRANULITES ; GANGDESE BATHOLITH ; ORTHO-PYROXENE ; NAMCHE BARWA ; VOLCANIC-ROCKS ; EVOLUTION ; GEOCHRONOLOGY ; MAGMATISM ; HISTORY
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000268971200014
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38919]
专题	中国地质调查局
作者单位	Inst Geol Sci Shangdong, Jinan 250013, Peoples R China
推荐引用方式 GB/T 7714	Wang, JL ,Zhang, ZM ,Dong, X ,et al. Discovery of Late Cretaceous garnet two-pyroxene granulite in the southern Lhasa terrane, Tibet and its tectonic significances[J]. ACTA PETROLOGICA SINICA,2009,25(7):1695-1706.
APA	Wang, JL .,Zhang, ZM .,Dong, X .,Liu, F .,Yu, F .,...&Shen, K .(2009).Discovery of Late Cretaceous garnet two-pyroxene granulite in the southern Lhasa terrane, Tibet and its tectonic significances.ACTA PETROLOGICA SINICA,25(7),1695-1706.
MLA	Wang, JL ,et al."Discovery of Late Cretaceous garnet two-pyroxene granulite in the southern Lhasa terrane, Tibet and its tectonic significances".ACTA PETROLOGICA SINICA 25.7(2009):1695-1706.