利用构造恢复原理制作古构造演化图

利用构造恢复原理，提出用“构造恢复法”来研究川西地区（复杂构造地区）的构造演化，它是一种新的构造演化分析方法，其原理是模拟地层沉积演化过程的逆过程，通过“去断层恢复”、“去褶皱恢复”、“去压实恢复”等方法，将目的层构造形态逐渐恢复到刚沉积时的构造形态，从而得到不同地质时期目的层的“古构造图”。用该方法制作的古构造图成图精度有较大提高，在复杂构造地区也能较好地进行构造演化分析，并且在川西地区须家河组须二段储层构造演化分析中取得较好的应用效果。

MAPPING PALAEOSTRUCTURAL EVOLUTION WITH TECTONIC RECONSTRUCTION THEORY

Based on the tectonic reconstruction theory, the "Tectonic Reconstruction Method" is proposed for use in study of the structural evolution in West Sichuan with complex structures. It is a new method to analyze structural evolution and its principle is to simulate the reverse process of deposition and evolution. The original structural forms of the targets at the time they were deposited are progressively reconstructed through "fault-removing", "fold-removing", and "decompaction" restorations, so as to obtain the palaeostructural maps of the targets at various geologic times. The accuracies of palaeostructures mapped with this method are greatly improved, and this method also can be used to analyze the structural evolutions in areas with complex structures. It has been successfully utilized to analyze the structural evolution of the 2 nd member of Xujiahe Fm in West Sichuan.