Geochronology and geochemistry of mineralized and barren intrusive rocks in the Yemaquan polymetallic skarn deposit, northern Qinghai-Tibet Plateau: A zircon perspective

doi:10.1016/j.oregeorev.2021.104560

CORC > 海洋研究所 > 中国科学院海洋研究所

	Geochronology and geochemistry of mineralized and barren intrusive rocks in the Yemaquan polymetallic skarn deposit, northern Qinghai-Tibet Plateau: A zircon perspective
	Zhong, Shihua 2,6,7; Li, Sanzhong 2,6,7; Feng, Chengyou 3; Gao, Yongbao 4; Qu, Hongying 5; Seltmann, Reimar 8; He, Shuyue 1; Liu, Guoyan 1; Wang, Xiaohong 9; Dolgopolova, Alla 6,7,8
刊名	ORE GEOLOGY REVIEWS
	2021-12-01
卷号	139 页码:19
关键词	Fertility Zircon Skarn Qimantagh Qinghai-Tibet Plateau
ISSN号	0169-1368
DOI	10.1016/j.oregeorev.2021.104560
通讯作者	Zhong, Shihua(zhongshihua@ouc.edu.cn) ; Li, Sanzhong(sanzhong@ouc.edu.cn)
英文摘要	The Yemaquan polymetallic skarn deposit is located in the Qimantagh metallogenic belt (QMB), northern Qinghai-Tibet Plateau, China, with total ore resources of 82.7 million metric tons at 29.46 percent Fe, 0.40% Cu, 2.08% Pb and 1.77% Zn. In this study, new trace element composition of zircon in tandem with LA-ICP-MS U-Pb geochronology are provided for mineralized and barren intrusive rocks occurring within two magnetic anomaly areas (M1 and M13) at the Yemaquan deposit. These data, combined with whole rock major and trace element compositions, allow to constrain the geochronological framework and magmatic processes for different types of intrusive rocks within the district. The zircon U-Pb ages reveal that the polymetallic mineralization in the M1 and M13 anomaly areas results from two temporally distinct intrusive centers. Different to the M13 area where only the mineralized Devonian intrusions are recorded, both mineralized and barren intrusive rocks in the M1 area were emplaced in the Late Triassic. Whole rock major and trace elements indicate that both Triassic mineralized and barren rocks underwent significant fractional crystallization, with the Triassic barren rocks displaying much stronger plagioclase fractionation. In contrast, the limited whole rock silica range and high Eu/Eu* of Devonian mineralized intrusions indicate that they did not experience evident fractionation. Zircon trace elements show that the two mineralized groups at Yemaquan display similar, high zircon Ce/Ce* but distinguishable Eu/Eu* ratios, which suggest a consistent, high magmatic oxidation state but different water content. The magmatic water content of Devonian mineralized rocks higher than that of their Triassic counterparts probably suggests that the former are more Cu-fertile. This study confirms that both Devonian and Triassic intrusive activities are responsible for skarn Fe-Cu-Pb-Zn mineralization at the Yemaquan deposit. Meanwhile, in view of the general feature of Yemaquan in the context of skarn deposits from the QMB, we thus suggest that in future mineral exploration great attention should be paid to both the Triassic and Devonian intrusive rocks.
资助项目	Natural Science Foundation of Shandong Province[ZR2020QD027] ; China Postdoctoral Science Foundation[2020T130621] ; China Postdoctoral Science Foundation[20180838] ; Opening Foundation of Key Lab of Sub-marine Geosciences and Prospecting Techniques. MOE, Ocean Univer-sity of China[SGPT-2021OF-03] ; Science and Technology Project of Qinghai Province[2019-ZJ-7009] ; Natural Environment Research Council[NE/P017452/1]
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000729454300001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177464]
专题	中国科学院海洋研究所
通讯作者	Zhong, Shihua; Li, Sanzhong
作者单位	1.Third Inst Qinghai Geol Mineral Prospecting, Xining 810012, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 3.Chinese Acad Geol Sci, Inst Explorat Tech, Langfang 065000, Peoples R China 4.China Geol Survey, Key Lab Study Focused Magnetism & Giant Ore Depos, Xian Ctr, Minist Nat Resources, Xian, Peoples R China 5.Chinese Acad Geol Sci, Inst Mineral Resour, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 6.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, MOE, Qingdao 266100, Peoples R China 7.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 8.Nat Hist Museum, Dept Earth Sci, Ctr Russian & Cent EurAsian Mineral Studies, London SW7 5BD, England 9.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Shihua,Li, Sanzhong,Feng, Chengyou,et al. Geochronology and geochemistry of mineralized and barren intrusive rocks in the Yemaquan polymetallic skarn deposit, northern Qinghai-Tibet Plateau: A zircon perspective[J]. ORE GEOLOGY REVIEWS,2021,139:19.
APA	Zhong, Shihua.,Li, Sanzhong.,Feng, Chengyou.,Gao, Yongbao.,Qu, Hongying.,...&Dolgopolova, Alla.(2021).Geochronology and geochemistry of mineralized and barren intrusive rocks in the Yemaquan polymetallic skarn deposit, northern Qinghai-Tibet Plateau: A zircon perspective.ORE GEOLOGY REVIEWS,139,19.
MLA	Zhong, Shihua,et al."Geochronology and geochemistry of mineralized and barren intrusive rocks in the Yemaquan polymetallic skarn deposit, northern Qinghai-Tibet Plateau: A zircon perspective".ORE GEOLOGY REVIEWS 139(2021):19.