Physical simulating model of Shiwu faulted depression structure in Songliao basin,China

In the early stage of Shiwu depression movement of Songliao basin,there was faulting and depression sedimentation,and basin reversing happened at the later stage.In this paper we simulated the formation and developing process by means of both shovel shape and linear boundary fault,which indicated that half of the graben fracture controlled by the steeper fault led to basin reversing during lateral compression.It provides a reasonable explanation for tectonic evolution of Shiwu faulted depression structure in Songliao basin,that is the normal faults formed during depression movement was compressed in laterstage reversing,which resulted in occurrence change and developed into reverse fault within sedimentary cover in depression phase.