论文部分内容阅读
韧性剪切带中，由于变形分解作用的存在，岩石发生递进变形过程中，产于共轴或非共轴递进缩短带内的变斑晶不发生旋转，而变斑晶内的包裹体痕迹是递进变形过程中遗留在变斑晶内的变形变质痕迹。利用未旋转斑晶中的包裹体痕迹可以确定早期面理的取向，寻找构造演化的时间标志，确定变形变质的关系及其演化史。对北祁连托勒牧场大型走滑韧性剪切带中石榴石、黑云母等变斑晶及包裹体痕迹的研究，揭示了变斑晶的生长和包、裹体痕迹与褶劈理的演化有着重要联系以及剪切变形过程中变形变质演化史、应变速率的变化。递进变形相应地发生递增变质，但两者存在着一定的差异性。
In the ductile shear zone, due to the existence of deformation and decomposition, during the progressive deformation of the rock, the speckles produced in the coaxial or non-coaxial progressive shortening band do not rotate, whereas the inclusions in the speckle Traces are the degenerated marks left within the plaque in the progressive deformation process. Using the traces of inclusions in unspliced plaques, the orientation of the early facet can be determined, the time scale of tectonic evolution can be found and the relationship between deformation and metamorphism and its evolution history can be determined. The study on the variation of garnet and biotite porphyritic inclusions and inclusions in the large-scale strike-slip ductile shear zone in Tuolu Ranch, North Qilian, reveals the evolution of the plaque and the evolution of inclusions and fold cleavages There is an important connection as well as the evolution of deformation and metamorphism in the shear deformation process, the change of strain rate. Progressive deformation occurs correspondingly increasing metamorphism, but there is a certain difference between the two.