Based on the results of research work and practices of the author, three kinds of methods and techniques for determining the fold shapes in the metamorphic rock region are advanced: (ⅰ) the microschist method, (ⅱ) t...Based on the results of research work and practices of the author, three kinds of methods and techniques for determining the fold shapes in the metamorphic rock region are advanced: (ⅰ) the microschist method, (ⅱ) the hook fold method and (ⅲ) the structural lenticular method. The theoretical foundation of these methods is structural transposition. The methods and techniques are successful both in practical and theoretical senses. We have gained fairly good effects by utilizing these methods.展开更多
文摘Based on the results of research work and practices of the author, three kinds of methods and techniques for determining the fold shapes in the metamorphic rock region are advanced: (ⅰ) the microschist method, (ⅱ) the hook fold method and (ⅲ) the structural lenticular method. The theoretical foundation of these methods is structural transposition. The methods and techniques are successful both in practical and theoretical senses. We have gained fairly good effects by utilizing these methods.