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新疆阿吾拉勒山一带下石炭统大哈拉军山组主要由火山熔岩和火山碎屑岩组成,为钙碱性系列的火山岩建造。岩石化学及地球化学的各种参数和图解表明,其形成于陆缘岛弧环境。大哈拉军山组火山岩记录了阿吾拉勒地区早石炭世沟—弧—盆组成的体系和板块俯冲碰撞的重要信息。
The Lower Carboniferous Dahalajunshan Formation in the Aulailan area of Xinjiang is mainly composed of volcanic lava and volcaniclastic rocks, which are built for the calc-alkaline series of volcanic rocks. Various parameters and diagrams of petrochemistry and geochemistry indicate that it is formed in a continental margin arc environment. The volcanic rocks of the Dahalajunshan Formation record important systems of the Early Carboniferous ditch-arc-basin composition in the Awulal area and the subduction collision of the plate.