The application of the dominant sedimentary facies analysis to the Cangfanggou Group in the Baijiahai-Wucaiwan region,eastern Junggar Basin

The dominant sedimentary facies analysis is presented in this paper to the selection of the sedimentary facies that may represent specific sedimentary records.The dominant sedimentary facies consist separately of alluvial fan,braided stream and meandering stream facies in the Upper Cangfanggou Group,while the fan-delta,littoral and shallow lake,and meandering stream facies in the Lower Cangfanggou Group.The distribution of the above-mentioned dominant sedimentary facies is dealted with in detail on the basis of seismic data and criteria for the division of dominant sedimentary facies.