Mineralization, Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region, Lower Yangtze Metallogenic Belt, Eastern China

doi:10.1111/1755-6724.13550

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	Mineralization, Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region, Lower Yangtze Metallogenic Belt, Eastern China
	Duan Liu'an 5,6,7; Yang Xiaoyong 7; Deng Jianghong 3,4,7; Wang Fangyue 2; Insung, Lee 1
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2018-04-01
卷号	92 期号:2 页码:706-732
关键词	zircon U-Pb dating porphyry Au deposit Lower Yangtze River metallogenic belt (LYRB) Paodaoling paleo-Pacific plate subduction
ISSN号	1000-9515
DOI	10.1111/1755-6724.13550
通讯作者	Yang Xiaoyong(xyyang555@163.com) ; Deng Jianghong()
英文摘要	The newly discovered Paodaoling porphyry Au deposit from the Guichi region, Lower Yangtze River Metallogenic Belt (LYRB), contains >35 tons of Au at an average grade of similar to 1.7 g/t. It is a porphyry 'Au-only' deposit, as revealed by current exploration in the depths, mostly above -400 m, which is quite uncommon among coeval porphyry mineralization along the LYRB. Additionally, there are also Cu-Au bearing porphyries and barren alkaline granitoids in the Paodaoling district. Zircon LA-ICP-MS U-Pb dating of the Cu-Au-bearing porphyries yield an age of 141-140 Ma, falling within the main magmatic stage of the LYRB, whereas the barren granites give an age of 125-120 Ma, coeval with the regional A-type granites. The Cu-Au-bearing porphyries are LILE-, LREE-enriched and HFSE-depleted, typical of arc magmatic affinities. The barren granites are HFSE-enriched, with lower LREE/HREE ratios and pronounced negative Eu anomalies. The Cu-Au-bearing porphyries in the Paodaoling district have high oxygen fugacities and high water content. Pyrite sulfur isotopes of the Paodaoling gold deposit indicate a magmatic-sedimentary mixed source for the ore-forming fluids. Based on the alteration and poly-metal zonation of the deepest exploration drill hole from the Paodaoling Au deposit, we propose that Cu ore bodies could lie at depth beneath the current Au ore bodies. The magmatism and associated Cu-Au mineralization of the Paodaoling district are likely to have formed in a subduction setting, during slab rollback of the paleo-Pacific plate.
资助项目	National Key R&D Program of China[2016YFC0600404] ; National Natural Science Foundation of China[41673040] ; National Natural Science Foundation of China[41611540339] ; Project of National Land Resource Science and Technology of Anhui Province[2014-K-4]
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000437257000016
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/163513]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Yang Xiaoyong; Deng Jianghong
作者单位	1.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 151742, South Korea 2.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Oceanog, Ctr Deep Sea Res, Qingdao 266071, Shandong, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Shandong, Peoples R China 5.7 Gold Geol Party Chinese Peoples Armed Police Fo, Yantai 264004, Shandong, Peoples R China 6.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 7.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Duan Liu'an,Yang Xiaoyong,Deng Jianghong,et al. Mineralization, Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region, Lower Yangtze Metallogenic Belt, Eastern China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2018,92(2):706-732.
APA	Duan Liu'an,Yang Xiaoyong,Deng Jianghong,Wang Fangyue,&Insung, Lee.(2018).Mineralization, Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region, Lower Yangtze Metallogenic Belt, Eastern China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,92(2),706-732.
MLA	Duan Liu'an,et al."Mineralization, Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region, Lower Yangtze Metallogenic Belt, Eastern China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 92.2(2018):706-732.