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依据关于地幔物质分解而引起的地壳的形成,以及关于水相当均匀地(在很长的时期里)进入到大洋壳里的概念,对于中生代——新生代这段地质时期内可能的世界洋面变化可以作出评价。同时估计沉积物的堆积作用,在洋底的火山产物,水下山脉的隆起等因素对洋面的影响,对于新生代却估计从已终结发育的特提斯地槽海盆的水的“倒入”以及洋底的断裂(据在珊瑚礁上的海底钻探)。洋面变化表现为如下过程:中生代开始时洋面是在-50米,白垩纪末+350米,上新世末+10米,在更新世最大冰期时-110米。中生代新生代海面下降是由于洋底强烈的拗陷,第三纪时拗陷的效果远远超过了海面上升(由地幔来的水的加入,沉积物的沉积作用,中脊的生长)的效果。中生代大陆架海非常宽广的发育说明,中生代时海底的拗陷作用要比早第三纪——晚第三纪时大大地减小。
Based on the formation of the crust caused by mantle material decomposition and the notion that water enters the oceanic crust fairly uniformly (over a long period of time), it is of great importance for the possible world ocean surface during the Mesozoic-Cenozoic geologic period Changes can be evaluated. At the same time, it is estimated that the deposition of sediments, the volcanic products in the ocean floor, the uplift of the underwater mountains and other factors have an impact on the ocean surface. For the Cenozoic, it is estimated that the water from the Tethys basin, "And the fractures of the ocean floor (based on submarine drilling over coral reefs). The ocean surface is characterized by the following processes: At the beginning of the Mesozoic, the ocean surface was at -50 meters, +350 meters at the end of the Cretaceous, +10 meters at the end of the Pliocene, and -110 meters at the time of the largest Pleistocene glacial period. The Mesozoic Cenozoic sea-level decline was due to the strong depression of the ocean floor. The effect of the depression in the Tertiary period far exceeded that of the sea surface (the addition of water from the mantle, the sedimentation of the sediments, and the growth of the mid-ridge) . The very broad development of the Mesozoic continental shelf shows that the seafloor depression during the Mesozoic was significantly less than that of the Early Tertiary-Late Tertiary.