过铝花岗岩的成因类型与构造环境研究综述  

Genesis of peraluminous granitoids and their tectonic settings

作　　者：林广春[1] 马昌前[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《华南地质与矿产》2003年第1期65-70,共6页Geology and Mineral Resources of South China

基　　金：中国地质调查局"中国花岗岩重大地质问题研究"项目 ( 2 0 0 113 90 0 0 18);高等学校博士点基金 ( 2 0 0 10 4910 18)

摘　　要：概述了过铝花岗岩类的成因类型及形成的构造背景 ,特别介绍了过铝花岗岩岩浆的来源及其鉴别标志 ,指出过铝花岗岩岩浆按物质来源可分为壳源、幔源和壳幔混源三种类型 ,是地壳、地幔以及地壳物质与地幔物质相互混合和相互作用的结果 ,各种不同类型之间可能存在一种地壳源与地幔源之间的连续谱系 ,并简要介绍了 CPG和 MPG两种主要过铝花岗岩的成因机制。提出了过铝花岗岩形成环境的综合判别准则 ,指出过铝花岗岩不仅可以形成于碰撞造山过程中的挤压性构造环境 。The genesis of peraluminous granitiods and their tectonic setting are summarized, especially the genesis of peraluminous granite magma and their sign are discussed. It is concluded that peraluminous granite magma can be derived from crust, mantle or crust-mantle commixing source and there may exists continuous spectrum ranging from crust source to mantle source, resulted from interaction of crust and mantle. This paper also introduces the genesis of two main peraluminous granite (CPG and MPG), puts forward four rules to distinguish tectonic settings of peraluminous granite, and points out that peraluminous granitiods can come into being not only in compressional settings during collisional orogeny, but also in extensional backgrounds caused by the lithosphere extension.

关 键 词：过铝花岗岩 岩石成因 构造环境 地壳演化 

分 类 号：P588.12[天文地球—岩石学]