It is believed that Wumishan cyclothems were formed in the sedimentary environment change, i. e. water depth changed from shallow to deep, then to shallow, and to be instantaneously exposed at last.

• 认为雾迷山旋回层为沉积环境的水深由较浅-较深-较浅-暴露条件下的沉积，可能代表真正的沉积旋回；