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

	Caledonian ore-forming event in the Laojunshan mining district, SE Yunnan Province, China: In situ LA-MC-ICP-MS U-Pb dating on cassiterite
	Shengjiang Du; Hanjie Wen; Chaojian Qin; Yongfeng Yan; Guangshu Yang; Haifeng Fan; Wenjiang Zhang; Lei Zhang; Dong Wang; Huaikun Li; Jianzhen Geng; Guangzhi Meng
	2015
发表期刊	Geochemical Journal
卷号	49 期号:1 页码:11-22
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.
关键词	Laojunshan Mining District Xinzhai Cassiterite In Situ U-pb Isotopic datIng Caledonian Metallogenic Epoch
学科领域	矿床地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5976
专题	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_期刊论文矿床地球化学国家重点实验室
推荐引用方式 GB/T 7714	Shengjiang Du,Hanjie Wen,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[J]. Geochemical Journal,2015,49(1):11-22.
APA	Shengjiang Du.,Hanjie Wen.,Chaojian Qin.,Yongfeng Yan.,Guangshu Yang.,...&Guangzhi Meng.(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	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".Geochemical Journal 49.1(2015):11-22.