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中文摘要：
本文首次将分形法引入到对郯庐断裂浮槎山构造岩的分析上，经研究发现，郯庐断裂肥东浮槎山韧性剪切带构造岩动态重结晶石英颗粒边界具有统计意义上的自相似性和明显的分形特征。利用“周长-直径法”得出，随着样品糜棱岩化程度的增强，分维值逐渐增大，依次为1．204、1．213、1．222、1．229，动态重结晶石英颗粒粒径逐渐变小，依次相应为33．79 μm、26．00μm、22．82μm、15．01μm，利用两种不同的求算方法进行比较分析，得出应变速率值逐渐增大，依次相应为4．837×10^-13s^-1、7．688×10^-13s^-1、9．682×10^-13s^-1、2．031×10^-12s^-1。研究区的岩石变形环境达到高绿片岩-低角闪岩相，形成温度为500℃左右。Kruhl温度计适用于该地区；而Takahashi应变速率计不适合自然界较深层次形成的韧性剪切带。
英文摘要：
In this study the fractal method is for the first time used to analyze the Fuchashan tectonite in the Tanlu fault, Feidong, and the results show that the boundaries of the dynamically recrystallized quartz grains in the Fuchashan ductile shear zone in the Tanlu fault are statistically self-similar and have distinct fractal features. Using the ＂perimeter-diameter method＂, the authors conclude that, with an increase in degree of mylonitization of the samples, the fractal dimension value increases progressively from 1.204, 1.213 and 1.222 to 1.229 and the corresponding diameter of the dynamically recrystallized quartz grains is reduced from 33.79, 26.00 and 22.82 la, m to 15.01 μm. Comparison between two different calculation methods shows that the corresponding strain rate increases gradually from 4.837×10^-13s^-1, 7.688×10^-13s^-1, and 9.682×10^-13s^-1, to 2.031×10^-12s^-1 The metamorphism in the study area is generally of high greenschist to low amphibolite facies, and the metamorphic temperature is about 500℃. Comparing the results of this study with the previous conclusion, the authors conclude that the Kruhl geothermometer is suitable for the study area, while the Takahashi strain rate meter is unsuitable for the ductile shear zone formed at relatively deep crustal levels.
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