桃林韧性剪切带的地质特征

来源期刊：中南大学学报(自然科学版)1998年第3期

论文作者：喻爱南 叶柏龙 彭恩生

文章页码：4 - 7

关键词：韧性变形岩石;岩相学;剪切带;桃林

Key words：ductile deformed rock; petrography; shear zone; Taolin

摘    要：在详细的野外观察和室内研究的基础上,描述了桃林韧性剪切带中的韧性变形岩石——花岗质糜棱岩系列岩石和绢绿石英构造片岩的岩相学特征.首次对该区糜棱岩中石英内的包体进行了镜下观察和均一法测温,并对其成因进行了讨论;韧性变形过程中岩石化学成分有明显变化,岩石体积损失约40%.

Abstract: Based on the field observation and indoor investigation,the petrographic characters of ductile deformation rocks of Taolin ductile shear zone,granitic mylonite series and sericite-chlorite-quartz tectonic schist, are recounted.The inclusions in quartz of mylonite are observed by microscope and their homogenization temperature is measured for the first time, and their origin is discussed.During the process of ductile deformation,the compositions of rocks were changed,their volume reduced by about 40%.