摘要
阿吾拉勒山是天山地层区伊犁小区的主要铁铜矿成矿区，但由于许多基础地质问题至今尚未解决，制约了找矿工作的突破。鉴于这种情况．本文根据野外调查及采样分析，从沉积学特征、火山岩特征和岩石地球化学特征等多方面对该区中石炭世地层──东图津河组的沉积环境进行了判别分析，证明其形成于岛弧及其周围海盆，主要是弧后盆地等滨、浅海环境。受这种特定的沉积环境和古地理环境的制约，本区的沉积型铁矿床的规模不可能很大．但却可以很富。
The Awulale mountain, which belongs to Yili district in Tianshan province, is one of the important metollogenic provinces. However, the prospecting work has not been made a break-through since many of the basic geological problems have not beem solved' The sedimentary environment is discussed in this paper and it is proved that the Dongtujinhe formation of the middle Carboniferous was formed under island arc and back-arc basin by analysing the sedimentary rocks, the volcanic rocks and geochemical characteristics. Controlled by this special sedimentary and paleogeographic environment, the scale of the sedimentary iron ore there will not be very large, but the iron ore can be quite rich.
基金
国家305项目
关键词
阿吾拉勒山
中石炭统
岛弧
含矿地层
沉积环境
Awulale mountain
middle Carboniferous
Dongtujinhe formation
island arc
back-arcbasin
