【摘要】 通过对阿尔及利亚东北部Tafna盆地区域地质资料、地震活动规律、震源分布和震源机制分析,详细研究了该盆地的地震构造模式。由地震震源机制分析可知Tafna盆主要受到NE-SE的挤压,显示该盆地应力场主要受到欧亚板块和非洲板块的碰撞影响。这一研究结果与目前Tafna盆地区域构造格架具有很好的一致性。更多还原

【Abstract】 The study of seismotectonics of the Tafna Neogene basin is represented as deduced from main geological features,seismicity and focal mechanism data.The hypocentral distribution of shallow earthquake is analyzed.The direction of the stress distribution is inferred from the focal mechanism of selected event.A seismotectonic framework summarizing these results together with the main geological features shows that the regional stress regime corresponds to horizontal compression in a NW-SE direction,associated with the collision between Eurasia and Africa plates.更多还原