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.
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
关键词
卡拉脚古牙锑金矿
赋矿地层时代
成矿时代
新疆
Kalajiaoguya Sb-Au ore deposit
age of ore-bearing strata
ore-forming age
Xinjiang
