Ore-forming processes and mineralization of complex tectonic system during the Mesozoic: A case from Xilamulun Cu-Mo metallogenic belt

	Ore-forming processes and mineralization of complex tectonic system during the Mesozoic: A case from Xilamulun Cu-Mo metallogenic belt
	Zhang LianChang; Wu HuaYing; Xiang Peng; Zhang XiaoJing; Chen ZinGuang; Wan Bo
刊名	ACTA PETROLOGICA SINICA
	2010-05-01
卷号	26 期号:5 页码:1351-1362
关键词	Porphyry Deposit Mineralization Specialization Mesozoic Xilamulun Metallogenic Belt Northern Margin Of North China Craton
ISSN号	1000-0569
文献子类	Article
英文摘要	The Xilamulun metallogenic belt, located between Central Asian Orogenic Belt and North China Craton, is situated at the junction between the Paleo-Asian Ocean and the west Circum-Pacific tectonic regime. The ore belt was controlled by some tectonic systems, such as post-collisional extension of the Central Asian Orogenic Belt, Mongolia-Okhosk orogen, west Circum-Pacific tectonic and lithosphere large-scale thinning. Molybdenite Re-Os and zircon U-Pb dating of the Xilamulun ore belt show three periods of mineralizations which occurred at 260 similar to 220Ma, 180 similar to 150Ma and 140 similar to 120Ma, respectively. Combined with the regional geology and geochemical study, we suggest that the mineralizations in the belt were formed during multiple geodynamic settings. The mineralization in 260 similar to 220Ma is probably related to a post-collisional extension stage with the generation of the porphyry molybdenum-copper deposits; The stage of 180 similar to 150Ma is related to a tectonic stress transformation from NS to EW; The large-scale mineralization occurred at 140 similar to 120Ma is related to the lithosphere thinning due to the upwelling of asthenosphere under the intra-continent extension. Based on geology and geochemistry of Mo-Cu deposits, authors suggest three ore-forming modes; i.e . "Chehugou","Jiguanshan" and "Aolunhua"-types. Study data show that ore-forming specialization are restricted by acid-alkali degree of host rock, magma source, oxygen fugacity of rock, evolvement fashion of magma and tectonic setting.
WOS关键词	NORTH CHINA CRATON ; INNER-MONGOLIA ; DEPOSIT ; GEOCHEMISTRY ; PETROGENESIS ; CONSTRAINTS ; ORIGIN ; MARGIN ; RANGE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000278597800003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73380]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang LianChang
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhang LianChang,Wu HuaYing,Xiang Peng,et al. Ore-forming processes and mineralization of complex tectonic system during the Mesozoic: A case from Xilamulun Cu-Mo metallogenic belt[J]. ACTA PETROLOGICA SINICA,2010,26(5):1351-1362.
APA	Zhang LianChang,Wu HuaYing,Xiang Peng,Zhang XiaoJing,Chen ZinGuang,&Wan Bo.(2010).Ore-forming processes and mineralization of complex tectonic system during the Mesozoic: A case from Xilamulun Cu-Mo metallogenic belt.ACTA PETROLOGICA SINICA,26(5),1351-1362.
MLA	Zhang LianChang,et al."Ore-forming processes and mineralization of complex tectonic system during the Mesozoic: A case from Xilamulun Cu-Mo metallogenic belt".ACTA PETROLOGICA SINICA 26.5(2010):1351-1362.