%0 Journal Article
%T Zircon U-Pb and molybdenite Re-Os dating for the Beiya gold-polymetallic deposit in the western Yunnan Province and its geological significance<br>滇西北衙金多金属矿床锆石U-Pb和辉钼矿Re-Os年龄及其地质意义
%A HE WenYan
%A MO XuanXue
%A YU XueHui
%A HE ZhongHu
%A DONG GuoChen
%A LIU XiaoBo
%A SU Gangsheng
%A HUANG XiongFei
%A <br>和文言
%A 莫宣学
%A 喻学惠
%A 和中华
%A 董国臣
%A 刘晓波
%A 苏纲生
%A 黄雄飞
%J 岩石学报
%D 2013
%I 
%X The Beiya gold-polymetallic deposit lies in the middle of the Cenozoic Jinshajiang-Ailaoshan alkali-rich intrusion belt in the western Yunnan Province. It is a representative ore deposit in studying Himalaya epoch mineralization and shows bright future for further prospecting. The first highly precise dating of the rock-forming and mineralization in Beiya gold-polymetallic deposit is provided in this paper. The U-Pb LA-ICP-MS dating of the zircon from Hongnitang quartz syenite porphyry yields an age of 36.48±0.26Ma. Re-Os dating of molybdenite separated from the skarn ore bodies gives a model age of 36.87±0.76Ma. These ages suggest that the mineralization in the Beiya gold-polymetallic deposit is genetically associated to the quartz syenite porphyry. The Re contents of molybdenite indicate that the ore-forming materials are derived from mantle and crust. Based on the same ages of the rock-forming and mineralization in Beiya gold-polymetallic deposit and other deposits in jingshajiang-Ailaoshan metallogenic belt, it is proposed that these deposits all occurred under the background of India-Eurasia collision when the tectonic regime changing make the thickened lower crust and upper mantle melt partially.
%K Metallogenetic setting
%K Zircon U-Pb age
%K Re-Os age
%K Beiya gold-polymetallic deposit
%K Western Yunnan Province<br>成矿背景
%K 锆石U-Pb年龄
%K Re-Os同位素年龄
%K 北衙金多金属矿床
%K 滇西
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=3D77F90660D80BD8F5E5A48C0A3EFD89&yid=FF7AA908D58E97FA&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=F1F469D6A2E9D130&eid=BBED0819A2A875B8&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=51