There were three times of sea-levelfluctuation corresponding to the paleoclimate evolution, which had formed the sediments of alternative sea and river facies.
晚更新世以来的三次海平面升降变化造成了潍河下游地区海陆沉积环境交替,形成了巨厚的海陆交互相沉积层。
2
Changes in climate before that period caused severe fluctuation in sealevel, resulting in the extinction of the dinosaurs.
在此之前,气候的变化导致了海平面的剧烈波动,恐龙因此灭绝。
3
Changes in climate before the Cretaceous period caused severe fluctuation in sealevel, resulting in the extinction of the dinosaurs.