Abstract: The conceptual framework establishment of turbidite depositional system, which includes turbidite complex, turbidite system,turbidite stage and sub-stage as well as turbidite beds, facilitates temporal and physical correlation exactly among marine turbidite deposits in different areas. W hen the framework is introduced into the halfgraben-like fault lacustrine basin, the continental turbidite deposit of its side of ramp is found to be more different than the marine turbidite deposit in terms of control factors of sedimentary evolution. The turbidite system and turbidite stage of the marine deposit are mainly controlled by relative change of sea level, while those of the continental fault lacustrine basin controlled by the tectonic subsidence and the change of debris flux, respectively.

Key words: Bo'nan oifield, turbidite deposit, subsidence velocity, evolution, fault basin