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沿着南加州圣安德烈斯断层现在的迹线,出露的主要碎裂岩是由花岗质和其他晶质岩石变化而来的未固结的断层泥。这种断层内的物质基本上是一种岩粉,其矿物组合等于与断层平行排列的原岩的碎粉。Brace(1972)等的实验研究强调了断层内物质(特别是断层泥)在控制岩石的破坏特征方面的作用是随着矿物的性质、温度和围压条件而变化的。但是由于
Along the current traces of the San Andres Fault in southern California, the major exposed cataclasite is unconsolidated fault mud that has been transformed from granitoids and other crystalline rocks. The material in this fault is essentially a rock powder whose mineral assemblage equals the ground powder of the original rock parallel to the fault. The experimental study by Brace et al. (1972) emphasized that the role of the matter within the fault, especially the fault mud, in controlling the failure characteristics of the rock, varies with the nature of the mineral, the temperature and the confining pressure conditions. But due to