Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism

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	Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism
	Xu, ZQ (Xu ZhiQin); Yang, JS (Yang JingSui); Li, HQ (Li HuaQi); Wang, RR (Wang RuiRui); Cai, ZH (Cai ZhiHui)
刊名	ACTA PETROLOGICA SINICA
	2012
卷号	28 期号:6 特刊 SI 页码:1697-1709
关键词	Indosinian Collision-orogenic system Mechanism
ISSN号	1000-0569
英文摘要	The closure of the large Paleo-Tethyan Ocean at the T-3-J(2) period induced collisions of many microterrains and formed huge Paleo-Tethys orogenic belts in South Asia, also known as Indosinian orogenic belts. The Indosinian orogenic belts of the Chinese continent and adjacent areas shows a "T"-shaped composite orogeny. Studies have shown that the western Indosinian "Bayan Har-North Qiangtang-South Qiangtang-Lasha" orogenic belts were formed in the Paleo-Tethys setting of multi-ocean basins, multi-terrains and multi-island arcs". Subduction and closure of Paleo-Tethyan ocean basins yielded a wide accretional orogeny in island arcs, accretionary wedges and high-pressure metamorphic belts, as well as large-scale orogenic collage due to multi-terrains collision orogeny charecterized by crustal deformations of syn-cleavage folds, thrusts and strike-slip faults. The eastern Indosinian orogenic system is the direct collision result between the North China and Yangtze blocks. The Songpan-Ganzi and South Qinling orogenic belts located above the Yangtze passive margin show large-scale deep decollement orogenic mechanism between the Upper Proterozoic metamorphic basement and Paleozoic-Triassic covers, as well as intensive shear strain of the Yangtze upper crust. The deep subduction (>100km) of the Yangtze crust and root extrusion mechanism yielded large-scale high pressure/ultra-high pressure metamorphic belts exposed in the Dabie-Sulu orogenic belt.
学科主题	构造地质学
WOS关键词	GARZE FOLD BELT ; EASTERN TIBETAN PLATEAU ; QIANGTANG METAMORPHIC BELT ; COESITE-BEARING ECLOGITES ; TECTONIC IMPLICATIONS ; NORTHERN TIBET ; DABIE MOUNTAINS ; GEOLOGICAL SIGNIFICANCE ; PALEO-TETHYS ; UHP TERRANE
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000305817000001
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39715]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Inst Geol, State Key Lab Continental Tecton & Dynam, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Xu, ZQ ,Yang, JS ,Li, HQ ,et al. Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism[J]. ACTA PETROLOGICA SINICA,2012,28(6 特刊 SI):1697-1709.
APA	Xu, ZQ ,Yang, JS ,Li, HQ ,Wang, RR ,&Cai, ZH .(2012).Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism.ACTA PETROLOGICA SINICA,28(6 特刊 SI),1697-1709.
MLA	Xu, ZQ ,et al."Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism".ACTA PETROLOGICA SINICA 28.6 特刊 SI(2012):1697-1709.