Marine progression and regression activities in platform areas are frequently triggered by the adjacent geosynclinal areas where basin and range movements take place.

• 地台区的海进、海退,分别与相邻地槽区的造盆和造山运动伴生这一普遍现象,主要是在重力均衡作用下,上地幔流变层(软流层,异常地幔)物质侧向迁移所致。