摘要
阿尔巴萨依组火山岩为一套安山岩~玄武岩组合,具有富钠贫钾的特点,反映岩石蚀变强烈;Ti/Y、Zr/Y、Ta/Yb比值较高,Hf/Ta、Zr/Nb比值较低显示出明显的大陆板内特征,对其进行构造环境判别,认为阿尔巴萨依组火山岩为板内玄武岩,形成于伸展断陷环境,地层中Cu、Zn、Cr、Ni、Mo等元素异常较好,具有一定的找矿潜力。
The volcanic rocks of the Aerbasayi formation are a set of andesite-basalt assemblages, which are rich in sodium and poor in potassium and reflect the strong alteration of the rocks.Ti/Y, Zr/Y, Ta/Yb ratios are relatively high, Hf/Ta, Zr/Nb ratios are relatively low, which show obvious intraplate continental characteristics. Based on the tectonic environment discrimination, it is considered that the volcanic rocks of albaiyi formation are intraplate basalt, formed in extensional faultdepression environment, and the Cu, Zn, Cr, Ni, Mo and other elements in the formation are abnormal and have certain prospecting potential.
引文
[1]刘冬冬,郭召杰,张志诚,吴朝东.准噶尔南缘古生代晚期盆山关系:阿尔巴萨依组火山岩锆石SHRIMPU-Pb定年及岩石地球化学限定[J].岩石学报,2012,28(08):2355-2368.
[2]张涛.东天山觉罗塔格地区晚石炭世火山岩岩石成因及构造环境[D].长安大学,2014.
(1)新疆地质调查院,新疆地矿局第一区域地质调查大队.1:25万雅满苏镇幅(L45C003003)地质调查报告.2012。