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被动大陆边缘演化的构造模式预测,继裂谷作用之后,由于岩石圈的逐渐冷却及其挠曲刚性度不断增大,沉积物应当在陆缘的边沿逐渐上超基底。模拟上超的模式酷似Vail等人估算全部地质时期内海平面上升的模式,这种相似性表明,陆缘地层层序大部分可能受构造作用控制,而不是受海平面升降控制的。Vail等人使用的上超模式可能很广泛,但从几个分离很远的被动大陆边埠都同时发生断裂的情况看,它们未必是全球性的。
The tectonic model of passive continental margin evolution predicts that sediments should gradually overtake the basement at the margins of the margins due to the gradual cooling of the lithosphere and its increasing flexural rigidity following rifting. The modeled superstructure resembles that of Vail et al., Which estimates sea level rise over all geologic time periods. This similarity suggests that most of the continental sequence may be controlled by tectonics rather than controlled by sea level rise and fall. The upper modes used by Vail et al. May be quite broad, but they may not necessarily be global in the sense that they break simultaneously at several remote passive continental margins.