西天山阿吾拉勒一带大哈拉军山组火山岩构造环境分析  

TECTONIC SETTING OF THE DAHALAJUNSHAN FORMATION VOLCANIC ROCKS IN AWULALE OF WEST TIANSHAN

作　　者：张江苏 李注苍 

机构地区：[1]甘肃省地矿局第三地勘院,甘肃兰州730000

出　　处：《甘肃地质》2006年第2期10-14,共5页Gansu Geology

基　　金：新疆新源县托库孜库马拉克一带1:5万区域地质矿产调查(编号:XJQDW2003-07)

摘　　要：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 consist of volcano molten lava and volcano clastic rock, and it is the volcanic construction of calc - alkaline volcanic suite. The data and graphs from petrochemistry and geochemistry approve that the tectonic setting is continental margin arc. The volcanic rocks of Dahalajunshan formation recorded the important information that it was made of trench - island arc - back arc basin in subducting and colliding of the plate in early Carboniferous in Awulaleshan area of Western Tianshan.

关 键 词：陆缘弧 大哈拉军山组火山岩 地球化学 构造环境 阿吾拉勒 西天山 

分 类 号：P588.14[天文地球—岩石学]