新疆东准噶尔地区两类花岗岩与两个成矿系列 |
| |
引用本文: | 哈亨祥.新疆东准噶尔地区两类花岗岩与两个成矿系列[J].大地构造与成矿学,1998,22(2):119-127. |
| |
作者姓名: | 哈亨祥 |
| |
作者单位: | 中国科学院长沙大地构造研究所 |
| |
摘 要: | 东准噶尔地区存在与两类花岗岩有关的两个金属成矿系列:与钙碱性花岗岩类有关的铜、金成矿系列和与富碱花岗岩类有关的锡成矿系列。钙碱性花岗岩成因上属造山后陆内断裂深熔型,富碱花岗岩属A型或S型。前者主要形成于华力西中晚期、华力西晚期;后者也主要形成于华力西中晚期、华力西晚期,岩石以富含碱性暗色矿物为特征。与钙碱性花岗岩有关的铜、金成矿系列矿床类型有斑岩型、隐爆角砾岩筒型、夕卡岩型、破碎带碎裂岩型和石英脉型,与富碱花岗岩有关的锡成矿系列矿床类型有锡石-石英脉型、蚀变花岗岩型和富石英云英岩型。斑岩型、隐爆角砾岩筒型铜(金)矿及与A型花岗岩有关的锡矿等新矿床型的存在,为该区钢、金、锡等矿产资源的进一步探寻.提供了重要方向。该区存在十分有利的构造、岩浆成矿条件、广泛发育的蚀变矿化现象和多种多样的矿化类型,地质研究程度和找矿工作程度低.表明该区具有广阔的找矿前景。
|
关 键 词: | 花岗岩类 成矿系列 东准噶尔 新疆 |
THE TWO ORE-FORMING METALS SERIES CLOSELY RELATED TO THE TWO GRANITOID SERIES IN EASTERN JUNGGAR, XINJIANG |
| |
Abstract: | There are two granitoid series and two ore--forming metals series closely related to them in eastern Junggar, Xinjiang. The first is the cafe-alkaline granitoid series and the copper and gold ore--forming series closely related to it. The second is the alkali-rich granitoid series and the tin ore--forming series closely related to it. In genetic classification, the calcualkaline granitoid is post-orogenic granite, the alkali--rich granitoid is typical A-type or S-type granite. All of the granites occurred in the Middle-Late or Late Variscan Orogeny. The metals deposits closely related to cafe-alkaline granite are porphyry copper deposit, cryptoexplosion breccia copper deposit, sham or similar--sham copper deposit and cataclastic rock copper deposit as well as porphyry gold deposit and quartz vein gold deposit. The metals deposits related to alkali--rich granite are cassiterite--quartz vein tin deposit, altered granite tin deposit and quartz--rich greisen tin deposit. In the future, it is important to explore the typical copper, gold and tin deposits seriously in eastern Junggar, Xinjiang. |
| |
Keywords: | Granitoid ore--forming metals series eastern Junggar Xinjiang |
本文献已被 维普 等数据库收录! |
|