糜棱结构(mylonitic texture)是动力变质岩石的一种结构。是在强烈的应力作用下,动力变质岩石的矿物颗粒几乎全部被破碎成微粒状(或细粒至隐晶质)的结构,常形成少量绢云母、绿泥石等新生矿物,有时可见类似流纹的条带状构造。破碎的微粒往往具明显的定向分布,其中可残留少量稍大的矿物碎块,但也常被磨圆呈眼球状。
本文在扫描电镜观测的基础上,运用气体吸附法和压汞法对郯庐断裂系南段糜棱岩和高级片麻岩的微孔隙结构参数进行了测试。
Based on SEM observance, the methods of gas adsorption and mercury pression were used to test micro hole frame parameters of mylonite and high grade gneiss in this paper.
其微孔隙结构远远优于已知的低、中、高压气藏的实际盖层,表明糜棱岩是天然气的一种优质盖层。
The micro hole structure of mylonite overmatch the covers of gas pools of sorts which indicate mylonite is a kind of high quality cover of natural gas.
宏观碎裂结构与微观糜棱状结构是断层构造岩的主要特点。
The tectonites are characterized by macroscopic cataclastic and microscopic mylonitic structures.
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