Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang

	Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang
	Shen Ping 1; Pan HongDi 2; Dong LianHui 1,3; Yang JunTao 4; Shen YuanChao 1; Dai HuaWu 1; Guan WeiNa 1,3; Zhao YunJiang 4
刊名	ACTA PETROLOGICA SINICA
	2012-07-01
卷号	28 期号:7 页码:1966-1980
关键词	Porphyry copper deposit Caldera complex Alteration belt Yandong Eastern Tianshan
ISSN号	1000-0569
文献子类	Article
英文摘要	Yandong large-size porphyry copper deposit is located in the Late Paleozoic Dananhu island arc in Eastern Tianshan, Xinjiang. Lower Carboniferous Qi'eshan Group occurred in the Yandong region. New results recognize a volcanic apparatus at Yandong that includes two cycles comprising five lithofacies. The first cycle consists of the effusive (basalt and andesite), explosive (auto-brecciated lava) and pyroclastic phases (tuff). The second cycle is characterized by the intermediate and felsic intrusions. The intrusions, including the diorite porphyry, aplite diorite and plagiogranite porphyry, are ore-bearing intrusions. Both diorite porphyry (including aplite diorite) and plagiogranite porphyry host the bulk of the copper mineralization at Yandong and have been overprinted by the two distinct alteration systems. Diorite porphyry has been overprinted by three alteration assemblages, including the central sericite-chlorite assemblage and chlorite-sericite assemblage and distal propylitic assemblage. Cu-Fe sulfides are closely associated with the sericite-chlorite assemblage. Plagiogranite porphyry, cutting the early-stage diorite porphyry, has undergone the central phyllic and surrounding strong and weak sericite alteration. Intense phyllic alteration produced the high-grade copper ore at Yandong. The two alteration systems at Yandong were characterized by rare potassic alteration and widespread sericite alteration.
WOS关键词	NORTHERN XINJIANG ; ORE-DEPOSITS ; CHINA ; EVOLUTION ; MINERALIZATION ; MOUNTAINS ; FLUIDS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000306631600002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84108]
专题	中国科学院地质与地球物理研究所
通讯作者	Shen Ping
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China 3.Xinjiang Bur Geol & Mineral Explorat, Uramuqi 830000, Peoples R China 4.Xinjiang Bur Geol & Mineral Explorat, Changji 831100, Peoples R China
推荐引用方式 GB/T 7714	Shen Ping,Pan HongDi,Dong LianHui,et al. Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang[J]. ACTA PETROLOGICA SINICA,2012,28(7):1966-1980.
APA	Shen Ping.,Pan HongDi.,Dong LianHui.,Yang JunTao.,Shen YuanChao.,...&Zhao YunJiang.(2012).Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang.ACTA PETROLOGICA SINICA,28(7),1966-1980.
MLA	Shen Ping,et al."Caldera complex, hosted rocks and alteration of the Yandong porphyry copper deposit in Eastern Tianshan, Xinjiang".ACTA PETROLOGICA SINICA 28.7(2012):1966-1980.