摘要
大王山地区分布有不同的花岗质岩石,经研究,永宁花岗质糜棱片麻岩是大王山二长花岗岩受动力变质作用改造形成。文章分析了花岗质岩石的岩石化学特征,并根据应变测量数据计算了糜棱片麻岩形成时体积相对变化,利用Gresen公式探讨了糜棱片麻岩形成时组分变化情况。
It is known that the various granitic rocks occur in the Dawangshan area and the Yongning granitic mylonite - gneiss was formed from the Dawangshan monzonitic granite by the dynamometamorphism. This paper discusses the petrochemical characteristics of the granitic rocks. And the volume changes were calculated according to the strain analyses of feldspar and quartz, and the compositional variation is studied based on Gresens formula when the mylonite-gneiss formed.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1993年第2期179-186,共8页
Earth Science-Journal of China University of Geosciences
关键词
岩石化学
动力变质
花岗岩
体积
granitic mylonite - gneiss, petrochemistry, strain analyses, dynamometamorphism.
