大别山南部蕲春太阳脑岩体地质特征  

Geological Characteristics of Taiyangnao Rock Mass in Southern Dabie Mountain,Qichun County

作　　者：王傲雷 刘兴平 

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]湖北省地质局第六地质大队,湖北孝感432000

出　　处：《资源环境与工程》2015年第2期140-145,共6页Resources Environment & Engineering

摘　　要：大别山南部蕲春太阳脑岩体在化学组成上以富硅、富铝为特征,属亚碱性的碱钙性系列,类似于S型花岗岩。其产出的构造背景为火山弧,属于地壳熔融—同碰撞S型花岗岩,可能形成于加里东末期,扬子板块与华北板块碰撞,边缘海闭合阶段。通过岩体和含金石英脉之间稀土、微量元素对比,讨论岩体与穿插其中的含金石英脉的关系,认为形成含金石英脉部分矿物质源于黑云二长花岗岩,特别是韧性构造发育、蚀变强烈的地段,岩体中穿插的石英脉含金量较高。Taiyangnao rock mass in southern Dabie mountain,Qichun county on the chemical composition is characterized by rich silicon,rich aluminum,belongs to sub-alkaline alkali-calcic series range. It is similar to the S type granite. Its output of tectonic background of volcanic arc,belongs to crustal melting-syn-collision with S type granite,probably formed in the late Caledonian,Yangtze plate and north China plates,marginal sea closing phase. Through comparative study of trace elements and rare earth in rock mass and gold-bearing quartz vein,the authors discusses the relationship between rock mass and gold-bearing quartz vein,thinks that part mineral of gold-bearing quartz vein originate from biotite adamellite.

关 键 词：太阳脑岩体 片麻状黑云二长花岗岩 岩石地球化学 含金石英脉 

分 类 号：P588.121[天文地球—岩石学]