论新疆东准噶尔陆相火山成矿作用  

CONTINENTAL VOLCANISM AND GOLD-COPPER METALLOGENESIS IN EAST JUNGGAR, XINJIANG

作　　者：刘家远[1] 

机构地区：[1]桂林工学院隐伏矿床定位预测研究所,广西桂林541004

出　　处：《大地构造与成矿学》2001年第4期434-438,共5页Geotectonica et Metallogenia

基　　金："九五"国家科技攻关基金项目(96-915)资助.

摘　　要：早石炭世晚期至早二叠世时期，东准噶尔地区陆相火山作用广为发育。近年来的研究证明，这一时期的陆相火山作用形成了两套重要的成矿岩浆建造，即安山－英安质喷溢、喷发岩建造和中性－中酸性潜火山杂岩建造，它们具有同一的成矿专属性，与金、铜、铁成矿密切相关。前者主要形成特征的浅成低温热液陆相火山岩型金矿。后者与金、铜成矿关系极为密切，其突出特征表现为受同－成矿岩浆作用的制约，在不同的外部条件下，形成不同类型的多种矿床，分别构成自成体系的金矿床系列和铜矿床系列，充分揭示了东准噶尔与陆相火山作用有关金、铜成矿的广阔前景和深远意义。Late Early Carboniferous-Early Permian continental volcanism is widely spread in East Junggar. Recently, according to our research, Au and Cu metallogenesis is closely related to late Early-Carboniferous continental volcanism. Two sets of metallogenetic magmatic formations: andesitic dacitic effusion-eryotive formation and intermediate-acidic sub-volcanic complex formation, widely spread in East Junggar,were formed by this continental volcanism. They have the same metallogenetic specialization; and have a close relation to Au, Cu, and Fe. The former is mainly formed characteristic epithermal hydrothermal continental volcanite-type ore gold deposits. The latter is very closely related to Au and Cu metallogenesis. Mineralization is rich and varied and is characterized by the same mineralizing restriction. On the condition of different external factors various ore deposits of different types were formed and constituted a complete system of Au deposits series and a complete system of Cu deposits series. This fully revealed broad prospects and profound significnce for Au and Cu deposits associated to continental volcanism in East Junggar. The former and the later formed variable and complicated Au and Cu ore deposits, widely spread in this district. This possesses an important theoretical and practical significance.

关 键 词：陆相火山作用 成矿岩浆建造 成矿专属性 金矿床 铜矿床 新疆 准噶尔盆地 成矿作用 

分 类 号：P618.51[天文地球—矿床学] P618.41[天文地球—地质学]