Abstract：Special seismic facies results from particular geological conditions, and usually occurs in the particular location of areal structure zone or depositional system. Therefore, it reflects sedimentary environment and indicates sedimentary fades. It is known that there are probably nine major kinds of special seismic facies in the northeast Talimu basin, we analyse here the geological factors which cause these special seismic facies, the features and the distributions of different kinds of seismic facies, and the hydrocarbon exploration effect. It is obvious that the study of special seismic facies is of great importance to the discovery of subtle oil and gas traps.
