【摘要】 活断层作用产生的地震破裂，曾使地表产生破裂变形，地面建筑物遭到严重破坏，但由于第四纪松散沉积物变形方式复杂，破裂形迹往往不清晰或不显示，使得在探糟剖面上很难发现这些破裂作用的上部形迹。通过研究不同松散沉积层中断层破裂位移的形式，从宏观、细观与微观相结合的角度，初步探讨了探槽剖面上确定古地震破裂时间的标志与方法。更多还原

【Abstract】 Seismic rupture produced by active faulting made groud surface fracturing and building seriously destroying. However, the fracturing traces are usually indistinct or invisible because of complicated deformations in Quaternary unconsolidated materials, and the up-parts of fracturing traces are hard to be discovered on exploratory trench, Therefore, the paper researches the types of fault rupture and displacement in different loose deposit beds in the view of a synthetical studies of mega-, meso-and micro-scopes, and approaches distinguish signs and timing of paleoseismic rupture on exploratory trench.更多还原