抚顺东部地区太古宙花岗质侵人体的地质特征及成因  

GEOLOGICAL FEATURES AND ORIGIN OF ARCHAEAN GRANITIC PLUTONS IN EAST FUSHUN, LIAONING

作　　者：凌贤长[1] 孙德育[1] 

机构地区：[1]长春地质学院地质系,130061

出　　处：《国土资源》1993年第4期305-321,共17页Land & Resources

摘　　要：抚顺东部地区太古宙花岗质侵入体为一套组成较复杂的大陆弧花岗岩,包括紫苏花岗岩和TTG岩系,具有奥长花岗岩及钙碱性双重演化趋势,形成于晚太古代大陆边缘或大陆弧环境中,其成因直接导源于古老的板块俯冲运动及区域变质变形作用,侵位机制属于主动型岩浆底辟作用。Archaean granitic plutons in East Fushun is a set of granites of continental arc,which inclucls charnockite and TTG with the double-evolutionary tendency of trondhjemite and calcalkalic, and formed in the environment of continental margin or continental arc during late Archaeozoic. It originated from underthrust movement of paleo-plates as well as regional metamorphic-deformational events. The emplacement mechanism is active magma diapirism.

关 键 词：太古宙 大陆弧 底辟作用 原生岩浆 残留混浆 深熔岩浆 

分 类 号：P[天文地球]