摘要
The well known geological mountain-Mantoushan is located in the mountain area of southern Jinan city. The standard (stratotype) profile from the Longwangmiao Stage to the Zhangxia Stage of the Lower middle Cambrian of the North China is established in this paper. On the basis of the distribution of palaeo-tectonic plates and seismic zones in the early Cambrian,it is considered that these seismic sedimentary traces are records of the intra-plate ancient earthquakes during the early Cambrian,and it is can be deduced that they are response to tectonic activities of the Paleo-Tanlu fault zone.