首页 | 本学科首页   官方微博 | 高级检索  
     检索      

云南泸水钨锡矿床微量钾矿物40Ar-39Ar马鞍形年龄谱的含义
引用本文:邱华宁,戴撞谟,蒲志平.云南泸水钨锡矿床微量钾矿物40Ar-39Ar马鞍形年龄谱的含义[J].矿床地质,1995,14(3):273-280.
作者姓名:邱华宁  戴撞谟  蒲志平
作者单位:中国科学院广州地球化学研究所
基金项目:国家自然科学基金资助项目
摘    要:采用40Ar-39Ar计时方法测定滇西泸水钨锡矿床的白云母、石英、电气石和绿柱石等矿物的年龄,其中微量K矿物(石英、电气石和绿柱石)均形成含过剩40Ar的马鞍形年龄谱。研究表明鞍形谱最小年龄的含义比较复杂,有些样品的最小年龄接近于成矿年龄,而有些样品的最小年龄大于甚至远大于成矿年龄。

关 键 词:氩同位素  矿床年龄  钨矿床  钾矿物

The implications of 40Ar-39Ar saddle-shaped age spectra of trace K minerals from the Lushui tungsten-tin deposit, Yunnan Province
Abstract:Ages of such minerals as muscovite, quartz, tourmaline and beryl from the Lushui tungsten-tin deposit in western Yunnan were determined by 40Ar-39Ar method. The trace K minerals (quartz, tourmaline and beryl) all form saddle-shaped age spectra of excess 40Ar. Studies show that implications of minimum ages of saddle-shaped spectra are rather complicated, with minimum ages of some samples close to metallogenic ages whereas those of other samples older than or even much older than metallogenic ages.
Keywords:40Ar-39Ar merhod  saddle-shaped age spectrum  age of ore deposit  Yunnan
本文献已被 维普 等数据库收录!
点击此处可从《矿床地质》浏览原始摘要信息
点击此处可从《矿床地质》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号