Eogene Seismite of Huanghua Depression

By the observation of drilling cores, the seismite is recognized in Tertiary in Huanghua Depression. Many Kinds of syn-sedimentary deformation structures have been found in seismite, including stepmicro-faults, micro-corrugated laminations, vibrational liquefaction sandstone and clay veins,loadingstructure, flamboyancy structure and so on. By the analysis of seismite of single well,seismite sequence have been put forward. The repeated emergence of seismite in strata section shows that the faulting activity has periodicity and episodicity. The research provides theoretical foundation for the tectonic evolution studies and seismite recognization in continental rift lacustrine basin, and also have certain oil—gas geology meaning.