【摘要】 地震灾变事件的直接证据是地层中留下的特殊的沉积记录——震积岩。鲁南地区新元古界石旺庄组底部发育的一套碳酸盐岩泥晶脉、液化卷曲变形构造、丘状层理、砾屑层等典型的地震-海啸震积岩序列,表明本区新元古代曾有过一个持续很长时间的地震活跃期。依据其沉积组合规律,可以识别出7个地震幕,30余次地震。造成这一地震灾变事件的主要原因是古郯庐断裂带的早期裂陷作用。更多还原

【Abstract】 The direct evidence of an earthquake hazard event is seismite—the special sedimentary record left in strata. A typical seismite-tsunamite sequence consisting of carbonate micrite veins, liquefied curl deformation structure, hummocky bedding and rudaceous layers is developed at the base of the Neoproterozoic Shiwangzhuang Formation in the southern Shandong area, which suggests that a very long-continued seismically active phase occurred in the area in the Proterozoic. According to the characteristics of its sediment associations, 7 seismic episodes and more than 30 earthquakes may be distinguished. The main cause of this earthquake hazard event was the earth rifting of the ancient Tanlu fault zone.更多还原