东天山成矿带斑岩铜矿和其他类型矿床找矿勘查  

Prospecting of Porphyry Copper and Other Types of Ore Deposit in the Eastern Tianshan Metallogenic Zone

作　　者：王庆明 赵仁夫[2] 屈迅 程晓红[2] 袁永江 

机构地区：[1]新疆地质调查院,新疆乌鲁木齐830000 [2]西安地质矿产研究所,陕西西安710054 [3]新疆地勘局第八地质大队,新疆阿克苏843000

出　　处：《西北地质》2006年第2期57-77,共21页Northwestern Geology

基　　金：中国地质调查局国土资源大调查项目<东天山地区综合研究与区域资源潜力预测评价>(项目编号:K4.3.3.3)

摘　　要：东天山地区横跨哈萨克斯坦与塔里木两大板块,是新疆最重要的有色金属、黑色金属和贵金属矿产地之一。经历了前震旦纪基底形成→震旦-泥盆纪古亚洲洋形成、消亡→石炭纪-早二叠世后碰撞造山→晚二叠世至今的陆内造山等阶段。主要成矿期为晚古生代早期(泥盆纪-二叠纪),成矿作用复杂、类型繁多。其中,北部形成岛弧斑岩型和火山岩型铜、钼、金矿,中部形成拉张火山岩型和矽卡岩型金、铜、镍、银矿,中南部形成前寒武纪结晶基底叠加改造的层控-热液型铅、锌、银矿,南部库鲁克塔格和北山地区形成拉张铜、镍、金矿。通过研究认为,东天山地区尤以铜、镍、钼矿产资源潜力很大,优选出28个矿找矿靶区。As one of the most important minralization China, the eatern Tianshan orogen straddles between experienced formation of the Pre-Sinian basement, zones for nonferrous, ferrous and precious metals in the Kazakstan and the Tarim plates. The orogen has evolution of the paleo-Asian ocean during Sinian-Devonian, post collision orogeny during Carboniferous-early Permian and intracontinental orogeny from late Permian to now. The major ore-forming period is late Paleozoic and mineralization has been complicated. The major ore deposits in the eastern Tianshan are. porphyry copper and volcanic Cu, Mo and Au formed in an island-arc setting distributed in the northern part of the eastern Tianshan; volcanic and skarn Au, Cu, Ni and Ag in a rifting environment occurring in the central part; strata-bound and hydrothermal Pb, Zn and Ag deposit in the central-southern part and Cu, Ni and Au deposits in an extentional setting in the southern Kuruktag and Beishan. It is suggested that the eastern Tianshan has great potential for Cu, Ni and Mo deposits and 28 areas have been selected as target for further exploration.

关 键 词：东天山 成矿背景 主要类型 典型矿床 潜力评价 找矿靶区 

分 类 号：P612[天文地球—矿床学]