杨绍鸽

• 1:中煤地质集团有限公司中国煤炭地质总局特种技术勘探中心

摘要(Abstract)：

阿翁错地区多仁组火山岩是班怒带火山岩重要组成部分之一。其呈夹层状分布于多仁组中段,属于钠质低镁亚铝质钙碱性系列安山岩。具有中等Si O2含量、高Al2O3含量、低Ti O2含量、富集轻稀土元素(LREE)、亏损重稀土元素(HREE)、未见明显的负Eu异常显示、富集大离子亲石元素、亏损高场强元素等地球化学特征。研究表明,在区内形成多仁组安山岩的构造环境是与洋壳俯冲有关的岛弧环境,而间断性岛弧型火山岩浆活动则是多层状安山岩形成的直接成因。

关键词(KeyWords)： 多仁组火山岩;地球化学特征;构造环境;成因分析;阿翁错地区

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局项目《班公湖-怒江成矿带铜多金属矿产资源基地调查》(编号:DD20160026)

作者(Author): 杨绍鸽

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