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在历史地质学文献中,有个根深蒂固的概念,即存在着全球性的同时沉陷,世界性海平面相对于大陆而增高,海水漫淹了广阔的平原,形成了陆上盆地。这样的时期为另一种时期所交替,另一种时期是海平面相对于大陆下降了,大陆好象浮起来了,发生广泛的海退。这种海退一般地与褶皱期相联系,如加里东、华力西、阿尔卑斯,有时甚至包括老基米里期和新基米里。最大的海浸发生在大褶皱期之间。地壳发展周期性概念的拥护者,认为世界性海浸与海退具有极其重大的意义。
In the historical geology literature, there is a deep-rooted concept that there is a global simultaneous subsidence, that the world-wide sea level is higher than that of the mainland and that seawater floods vast expanses of land and forms an on-land basin. Such periods alternate for another period. The other period is that the sea level has declined relative to that of the mainland. The mainland seems to have floated and widespread regression has taken place. This regression is generally associated with folds, such as Caledonian, Varis, Alps and sometimes even Old Kimiri and Shin Kimiri. The largest sea immersion occurs between the big folds. Advocates of the cyclical concept of crustal development believe that global sea immersion and retreat are of immense significance.