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DOI	10.1144/SP353.4
	Metamorphic evolution of the Tethyan Himalayan flysch in SE Tibet
	Dunkl, I.; Antolin, B.; Wemmer, K.; Rantitsch, G.; Kienast, M.; Montomoli, C.; Ding, L.; Carosi, R.; Appel, E.; El Bay, R.; Xu, Q.; Von Eynatten, H.
通讯作者	Dunkl, I (通讯作者)
发表日期	2011
ISSN	0305-8719
起始页码	45
结束页码	69
卷号	353
英文摘要	The metamorphic conditions and the age of thermal overprint were determined in metapelites, metaarenites and metabasites of the Tethyan Himalayan Sequence (THS) in SE Tibet using Kubler Index and vitrinite reflectance data and applying thermobarometrical (Thermocalc and PERPLEX) and geochronological methods (illite/muscovite K-Ar and zircon and apatite (U-Th)/ He chronology). The multiple folded thrust pile experienced a thermal overprint reaching locally peak conditions between the diagenetic stage (c. 170 degrees C) and the amphibolite facies (c. 600 degrees C at 10 kbar). Burial diagenesis and heating due to Early Cretaceous dyke emplacement triggered the growth of illite in the metapelites. Eocene collision-related peak metamorphic conditions have been reached at c. 44 Ma. During collision the different tectonic blocks of the THS were tectonically buried to different structural levels so that they experienced maximum greenschist to amphibolite facies metamorphism. Later, during Oligocene to Miocene times the entire THS underwent anchi- to epizonal metamorphic conditions, probably associated to continuous deformation in the flysch fold-thrust-system. This period terminated at c. 24-22 Ma. Adjacent to the north Himalayan metamorphic domes, the base of the THS was metamorphosed during Miocene times (c. 13 Ma). Post-metamorphic cooling below c. 180 degrees C lasted until Late Miocene and took place at different times.
关键词	ZANGBO SUTURE ZONE K-AR AGE SOUTHERN TIBET TECTONIC EVOLUTION STRUCTURAL EVOLUTION CENTRAL NEPAL SEDIMENTARY HISTORY THERMAL EVOLUTION PASSIVE MARGIN MAFIC ROCKS
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Geology
WOS类目	Geochemistry & Geophysics ; Geology
WOS记录号	WOS:000288487200004
来源期刊	GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257945
推荐引用方式 GB/T 7714	Dunkl, I.,Antolin, B.,Wemmer, K.,et al. Metamorphic evolution of the Tethyan Himalayan flysch in SE Tibet[J]. 中国科学院青藏高原研究所,2011,353.
APA	Dunkl, I..,Antolin, B..,Wemmer, K..,Rantitsch, G..,Kienast, M..,...&Von Eynatten, H..(2011).Metamorphic evolution of the Tethyan Himalayan flysch in SE Tibet.GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU,353.
MLA	Dunkl, I.,et al."Metamorphic evolution of the Tethyan Himalayan flysch in SE Tibet".GROWTH AND COLLAPSE OF THE TIBETAN PLATEAU 353(2011).