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

In the early stage of Shiwu depression movement of Songliao basin, there was faulting and depression sedimentation, 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. It‘s indicated by simulating experiment that half of the graben fracture controlled by the steeper fault led to basin reversing during lateral compression. This has provides a reasonable explanation for tectonic evolution of Shiwu faulted depression structure in Songliao basin, the normal faults formed during depression movement was compressed in later-stage reversing, which resulted in occurrence change and developed into reverse fault within sedimentary cover in depression phase.