新疆卡拉脚古牙锑金矿床赋矿地层时代和成矿时代  

Detemination of the Age of Ore-bearing Strata and Ore Forming Age of the Kalajiaoguya Sb-Au Ore Deposit in Tianshan Mountains of Xinjiang in China

作　　者：倪守斌[1] 满发胜[1] 胡世玲[2] 王兆荣[1] 孙啸[1] 

机构地区：[1]中国科学技术大学地球和空间科学院,合肥230026 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《中国科学技术大学学报》2004年第3期342-347,共6页JUSTC

基　　金：国家重点基础研究课题 (No .2 0 0 1CB4 0 980 6 );新疆 30 5科技攻关 (No .96 915 0 4 0 4 )资助项目

摘　　要：采用Rb Sr同位素定年方法 ,对新疆卡拉脚古牙锑金矿床赋矿地层的含炭泥质千枚岩进行测定 ,获得Rb Sr等时线年龄 379± 1 9Ma ;成矿时代采用主成矿期与锑金共生的石英 ,利用4 0 Ar- 39Ar法获得成矿时代为 1 1 8.2± 3.2Ma .研究结果表明 :卡拉脚古牙锑金矿床的赋矿地层时代为中泥盆世 。Located in the southwestern Tianshan mountains, the Kalajiaoguya Sb-Au ore deposit is meso-epithermal ore deposit in metallogenic characteristics. Using the conventional 40Ar- 39Ar age dating technique, the ore-forming age of 118.2±3.2 Ma for the Kalajiaoguya Sb-Au ore deposit is determined, to have formed at late Yanshanian. According to the Rb-Sr isochron age (379±19Ma) the ore-bearing is stratum a carboniceans shale Middle Devonian one.

关 键 词：卡拉脚古牙锑金矿 赋矿地层时代 成矿时代 新疆 

分 类 号：P597[天文地球—地球化学]