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(一)前言六十年代中期,在我国西南地区首次开展了区域性地震地质调查,对一些在历史上有强烈地震发生的活动性断裂进行了研究。经观察发现不同断裂或同一断裂的不同地段,断裂带产物各式各样;而在同一露头上也常有不同特点的构造岩共生。从而提出了断裂带构造岩特征随断裂形成深度不同而有所差异。1972年,笔者总结了这方面的经验,作了初步讨论。1975年以后,国内外许多学者讨论了断裂带的垂直变化。Казанский(1975)提出断裂带按深度分为五带;Sibson(1977)提出断裂带的双层模式;张文佑等和舍尔曼分别提出由浅到深从脆性变形转为塑性变形;本文笔者提出划分为七个构造岩组合;1981年在美国加利福尼亚达戈城举行的糜棱岩讨论会上,归纳为三个深度带;钟大赉将
(I) Preface The mid-1960s conducted the first regional geological survey of seismicity in the southwestern region of China, and conducted a study on some active faults that have occurred in history with strong earthquakes. The observation shows that different faults or different faults of the same fault have different types of products in the fault zone, and structural rocks of different characteristics often coexist on the same outcrop. It is proposed that the characteristics of structural rocks in fault zone vary with the depth of fault formation. In 1972, the author summed up the experience in this area, made a preliminary discussion. After 1975, many scholars at home and abroad discussed the vertical variation of the fault zone. Казанский (1975) proposed that the fault zone be divided into five zones by depth; Sibson (1977) proposed the double zone mode of the fault zone; Zhang et al. And Sherman respectively proposed the transition from brittle to plastic deformation from shallow to deep. In this paper, Seven tectonic rocks; 1981 mined in the mylonite seminar held in Dago, California, USA, into three depth bands;