Discovery and significance of seismite in the eastern depression of Liaohe Basin

Core observation in the eastern depression of Liaohe Basin in 2006 had discovered many earthquake-related deformation structures in Shahejie formation, such as liquefied sandstone veins, brecciated structure, discordant rocks, liquefied curled deformation structure, and multiple minor faults. Systematic observation on Well Niu18, Niu22, Tai3, Tai10 and Long9 indicates that the distribution of seismite and the intensity of earthquake deposit were closely related to regional faulting movements. The discovery of seismite is helpful to identify the intense moving stage of basin-controlling boundary faults, and the seismite itself may also be a potential hydrocarbon reservoir. In addition, seismite study can provide more about ancient earthquake and provide evidence for present earthquake forecasting.