Basement structure of Yingen basin and its significance on basin evolution

To discover the relationship between basement structure and evolution of Yingen basin,the basement structure is studied with methods combining gravity,magnetic,MT and seismic data,drilling data.The results indicated the basin's dynamic relationship between basin formation and basement structures.The Yingen basin is of duplex basement composed of blocked crystal basement and layered metamorphic basement.The evolution of the basin elapsed several stages including regional uplift(AnC),paleo-rift stage(C-P),uplift stage(T-J),rift stage(K₁b-K₁s) and regional depression stage(K₂).