郯庐断裂带鲁南段新元古界石旺庄组的震积岩序列

Seismites Sequence of Shiwangzhuang Formation of Neoproterozoic in South Shandong Sector of Tancheng-Lujiang Fault Zone

在郯庐断裂带鲁南段新元古界石旺庄组碳酸盐岩地层中,鉴别出一套震积岩,其主要类型为液化方解石脉、同沉积褶曲、震碎角砾岩、海啸岩等。经过分析,这些现象是地震作用形成的震积岩—啸积岩序列,该序列为地震原地相和海啸异地相震积层组成的双层结构,两层之间被震积不整合面所分隔,因而为鲁西新元古界的地层对比增添了新的材料。

In the Neoproterozoic of south Shandong Tancheng-Lujiang fault zone, a series of seismites are found. The main types of seismitic rocks are mierite vein, syndepositional fold, autoclastic breccia, tsunamite, etc, which are all quake-begotten seismic-tsunami sequence. The seismites are of two-layer structure, that is, the in-situ seismodisturbed beds and the heterochthonous slumping seismitic beds. The two layers are comparted by the seismodisconformity surface. This discovery results provide the new materials for the study of the stratigraphic correlation of Neoproterozoic in west Shandong.