摘要
通过对萨瓦亚尔顿金（ 锑） 矿床矿石中共生石英的流体包裹体作 Ｒｂ Ｓｒ 等时线年龄（２３１ ±１０ Ｍａ） 的研究，表明成矿时代为印支期，与南天山造山带陆内造山晚阶段一致。由于矿区主体赋矿地层的（２）（３） 岩性段中无化石，故采集其中的一组无矿石英脉作包裹体 Ｒｂ Ｓｒ 等时线年龄（３８９ ±４２ Ｍａ） ，推测赋矿地层年龄上限为志留 泥盆纪。根据近年来在赋矿岩系的（１）（２） 段所发现的动物化石年代依据，指出含矿浊积岩系东部和西部二个岩性段即（１） 和（４） 段为石炭系。
Located in the southwestern Tianshan mountains, the Sawayaerdun gold (antimony) deposit is similar to the Muruntau gold deposit of Uzbekstan in metallogenic characteristics. The Rb_Sr isochron age (231±10Ma) of fluid inclusions in quartz from the ores indicates that the metallogenic epoch is Indosinia,consistent with the intracontinental collision stage of the South Tianshan Mountains. According to Rb_Sr isochron age (389±42Ma) of fluid inclusions in quartz from bedding quartz_carbonate veins, the ages of the main ore_bearing strata (2 and 3 sections) are between Silurian and Devonian. However,the two lithologic members above and below the main ore-bearing strata belong to Carboniferous according to fossils.
基金
国家305项目
原地质矿产部定向基金
关键词
金矿床
锑矿床
成矿时代
赋矿
地层时代
Sawayaerdun gold_antimony deposit Rb_Sr isochron age metallogenic epoch ore_bearing strata
