| 西南天山萨瓦亚尔顿金(锑)矿床成矿时代与赋矿地层时代 |
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| 引用本文：叶锦华,王立本,叶庆同,李华芹,张晓华.1999.西南天山萨瓦亚尔顿金(锑)矿床成矿时代与赋矿地层时代[J].地球学报,20(3):278-283. |
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| 基金项目:国家305项目;原地质矿产部定向基金 |
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| 中文摘要: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±10Ma） 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±42Ma） ，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）（1） 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。 |
| 中文关键词:萨瓦亚尔顿金(锑)矿床 Rb-Sr等时线年龄 成矿时代 赋矿地层时代 |
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| Metallogenic Epoch and Ore-bearing Strata Age of the Sawayaerdun Gold-Antimony Deposit in Tianshan Mountains, China |
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| Abstract: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. |
| keywords:Sawayaerdun gold-antimony deposit Rb-Sr isochron age metallogenic epoch ore-bearing strata |
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