Controlled by the distance to the terrigenous province, basement structure and main faults, these lake floor fans can be subdivided into three subfacies, i.e. inner fan, middle fan and outer fan.

• 受物源区的距离、基底构造和主干断层活动的控制，湖底扇平面上具有分带性，可划分为内扇、中扇和外扇3个亚相带。