Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite

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	Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite
	Chaojian Qin; Hanjie Wen; Shengjiang Du; Guangzhi Meng; Jianzhen Geng; Huaikun Li; Dong Wang; Lei Zhang; Wenjiang Zhang; Haifeng Fan
刊名	Geochemical Journal
	2015
卷号	49 期号:1 页码:11-22
关键词	Laojunshan Mining District Xinzhai Cassiterite In Situ U-pb Isotopic datIng Caledonian Metallogenic Epoch
英文摘要	The Laojunshan mining district is an important part of the SE Yunnan W-Sn polymetallic mineral belt. Previous geochronologic data have shown that the main metallogenic stages in this area are Indosinian and Yanshanian in age. In this paper, we present a new dating result that differs from those published previously by using the in situ LA-MC-ICP-MS geochronologic method on a cassiterite sample from the giant Xinzhai tin deposit. Analyses of this sample yielded a U-Pb Tera Wasserburg age of 419.1 +/- 6.7 Ma. This new date identifies a Caledonian metallogenic event at the Xinzhai tin deposit and this age is also consistent with Caledonian magmatic and tectonic activity previously recognized in the Laojunshan mining district. Therefore, not only Yanshanian and Indosinian metallogenic stages but also a Caledonian mineralization event must have occurred in the study area. This new result may play an important role in ore prospecting and metallogenic study in the Laojunshan mining district and, more importantly, in all of SE Yunnan.
学科主题	矿床地球化学
语种	英语
公开日期	2017-05-11
内容类型	期刊论文
源URL	[http://ir.gyig.ac.cn:8080/handle/352002/5976]
专题	地球化学研究所_矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Chaojian Qin,Hanjie Wen,Shengjiang Du,et al. Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite[J]. Geochemical Journal,2015,49(1):11-22.
APA	Chaojian Qin.,Hanjie Wen.,Shengjiang Du.,Guangzhi Meng.,Jianzhen Geng.,...&Yongfeng Yan.(2015).Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite.Geochemical Journal,49(1),11-22.
MLA	Chaojian Qin,et al."Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite".Geochemical Journal 49.1(2015):11-22.