海岸砂坝-泻湖沉积体系中砂体分布及其预测

Sandbody Distribution and Prediction of Coastal Barrier-lagoon Depositional Systems

依据砂坝－泻湖体系的类型，对砂体作出预测：稳定型砂坝－泻湖体系中砂体类型多，厚度大，叠置关系复杂；海侵型砂坝－泻湖体系中砂体类型少，主要为砂坝砂体，呈席状或多列阶梯状分布；海遇型砂坝泻湖体系中砂坝砂体呈多列分布，泻湖中砂体类型多，并具有复杂的分布格局,破坝－泻湖体系中砂体的类型、组合关系、空间分布格局是海平面升降速度、沉积物供应量。

Combination of sandbody and its relationships with host rook depend on the types of coastal barrier - lagoon systems. By distinguishing types of barrier - lagoon systems, we can predict the distribution of sandbody. In stationary barrier-lagoon systems, there are a lot of types of sandbody with thick and complex relationships of superimposition,but a few of types in transgressive barrier - lagoon systems distribute in sheet or multiple rows of riser. In regressive barrier - lagoon systems, there are lots of types of lagoon sanedy with complex frameworh. The types of the sandbody, combination relationships and framework of distribution represent the relationships among rate of sea level rise and drop, amounts of sediment supply and hydrodynamic strength.