西藏改则县北亭贡南部地区埃达克岩的发现

摘要

在西藏改则县北亭贡南部地区发现一套岩石组合以辉绿玢岩-细粒闪长岩一细粒石英闪长岩-安山岩-凝灰岩组成的埃达克岩，根据岩石学、岩石化学、岩石地球化学及产出构造环境与典型埃达克岩对比，其完全符合埃达克岩类型，埃达克岩的发现为研究区火成岩成因问题和铜矿的找矿方向提供新思路。%In the south Beitinggong of Gaize, Adakites which is made of allgovite, fine grained diorite, fine grained quartz diorite, andesite, tuff. By compare the Adakites with lithology, lithochemistry, lithogeo- chemistry and occurrence structural environment, it suit the Adakites completely. The discovery of Adakites affords new idea for the igneous ~enesis in the target area and conner exploration.