摘要
我国冀东地区广泛分布着太古代各种花岗质岩石(英云闪长质—奥长花岗质—花岗质片麻岩,及微斜长石花岗岩)。在这些花岗质岩石中见有各种成因组构:残余岩浆组构、聚集重结晶组构、交代一熔蚀组构、分凝—共结组构及塑变—碎裂组构。运用这些标志性组构不仅可以研究该区花岗质岩石的成因而且可以追溯这些花岗质岩石的形成演化历史。
Different types of Archean grani ic rocks (tonali ic-trondhjemitic-granitic gneisses and microcline granite) are widely distribu ed in the eastern part of Hebei province, China.In the granitic rocks, different kinds of genetic fabrics have been found, i.e.relic magmatic fabric;accumulated-recrystallized fabric; metasomatic-corroded fabric; segrega ed-eutectic fabric and plastic deformed-cataclastic fabric.All of these fabrics can be used not only to distinguish the origin of granitic rocks, but can also be used to trace the evolutionary history of the granitic rocks in this area.
出处
《吉林地质》
1991年第1期50-55,T001,共7页
Jilin Geology
关键词
花岗岩
成因
成因组构
演化
太古代
Genetic fabric Origin of ganie Evolu ionary history East Hebei
