Occurrence of both carbonate and siliciclastic sources, active hydrodynamic regimes, alternate dry and wet climates, and the fluctuation of sea level are main factors for forming mixed sediments.

• 形成混合沉积的条件是具备碳酸盐和矽质碎屑两类物源、活跃的水动力和干湿交替的气候，此外，海平面的相对波动也会造成积极的影响。