摘要
辽西建平地区太古宙变质杂岩主体岩石为叶柏寿片麻岩，经历了麻粒岩相的高级变质作用，由于后期退变质作用，部分退变为角闪岩相片麻岩和绿片岩相片麻岩。叶柏寿片麻岩的原岩为中性侵入岩，为钙碱性系列的岩石，同于壳源分异花岗岩。其形成环境为构造活动带。
The Archaeozoic metamorphic complex from Jianping area was defined as the Xiao-tazigou Formation before ,which is a suit of simple monocline metamorphic layers and its pri-mary rock is igneous rock of intermediate and basic rock─sedimentary rock. But the paperconsiders that the main rock of Archaeozoic metamorphic complex in the area can be calledYiebaishou gneiss ,which underwent high metamorphism of granulite facies. Because of laterstage retrogressive metamorphism, part of it retrograded to gneiss of amphibolite and green-schist facies. So the primary rock of Yiebaishou gneiss is intermediate intrusive rock,belong-ing to the rock of calcium-alkali series,and crust source separating granite. The original envi-ronment is structure active belt.
出处
《辽宁地质》
1994年第4期342-355,共14页
关键词
片麻岩
原岩
变质作用
壳源分异
花岗岩
成因
Yiebaishou gneiss Original rock Retrogressive metamorphism Crustsource separating Granite
