烟台北部古元古代芝罘群变形变质作用及演化

Deformation, Metamorphism and Evolution of Zhifu Palaeo-proterozoic Group in North of Yantai City

摘要:

在分析烟台北部芝罘群主要变质岩类的变质矿物共生组合、变质相系及构造岩等特征的基础上 ,对该群变形、变质作用及演化特征进行了探讨。认为该区芝罘群曾经历 1期韧性变形作用和 4期变质作用 (古元古代高角闪岩相、中元古代早期低角闪岩相、中元古代晚期高绿片岩相及新元古代低绿片岩相变质作用 )。

Abstract:

Characteristics of paragenetic association of metamorphic minerals, metamorphic-facies series and tectonites of major metamorphic rocks in Zhifu group in north of Yantai city have been analysed in this paper, and characteristics of deformation, metamorphism and evolution studied as well. It is regarded that Zhifu group has once experienced one ductile deformation period and four metamorphism period (Palaeo-proterozoic high-breccia facies metamorphism, low-breccia facies metamorphism in early period of Meso-...