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一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-eruptive formation and intermediate—acidic subvolcanic complex formation, widely spread in East Junggar, were formed by this continental volcanism. They have the same metallogenetie 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 mineratizing restriction. On the condition of different the 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 significance 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 important theoretical and practical significance.
出处
《桂林工学院学报》
2000年第1期1-4,共4页
Journal of Guilin University of Technology
基金
"九五"国家三O五项目专题研究部分成果
关键词
陆相火山作用
铜矿床
金矿床
矿床成矿
continental volcanism
metallogenetic magmatic formation
metallogentic specialization
series of Au-Cu deposits
Xinjiang
East Junggar
