A型花岗岩的研究进展及意义

被引:207
作者
贾小辉 [1 ,2 ]
王强 [1 ]
唐功建 [1 ,2 ]
机构
[1] 中国科学院广州地球化学研究所同位素年代学与地球化学重点实验室
[2] 中国科学院研究生院
关键词
A型花岗岩; 实验岩石学; 物质来源; 岩石成因; 构造环境;
D O I
10.16539/j.ddgzyckx.2009.03.012
中图分类号
P588.121 [];
学科分类号
摘要
A型花岗岩主要形成于伸展的构造背景中,是构造环境识别的重要岩石学标志之一。由于形成于特殊的构造背景和重要的地球动力学意义,A型花岗岩的研究一直得到广泛的关注,但是仍旧有许多问题(如命名、分类和成因等)在争论之中。本文从下面几个方面对A型花岗岩的研究现状进行了较系统的总结:(1)A型花岗岩的概念及特征;(2)A型花岗岩与高分异I、S型花岗岩的区别;(3)A型花岗岩的物质来源及成因模式;(4)A型花岗岩的实验岩石学成果;(5)A型花岗岩的分类;(6)A型花岗岩的构造背景及动力学意义。A型花岗岩在形成过程中斜长石、斜方辉石可能为主要的残留或分离结晶矿物相。除了传统的A1(非造山)、A2(后碰撞)分类外,"还原型"和"氧化型"的分类方案最近也受到广泛关注。
引用
收藏
页码:465 / 480
页数:16
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