因此，它们可以重现海底扩张的过程，以及大陆和大洋盆地过去的地理位置发展过程。
They therefore permit the reconstruction of the process of seafloor spreading, and consequently of the geography of continents and of ocean basins in the past.
地貌形成与演化主要受南海新生代两次海底扩张控制。
The two seafloor spreadings of the South China Sea controlled the origin and evolvement of geomorphic types of the study area.
印度洋脊是中大洋脊的一部分，中大洋脊是地壳分离的地球板块形成的。这一形成过程被称为海底扩张。
This is part of the system of mid-ocean ridges that form as the tectonic plates of the Earth's crust move apart-a process known as sea floor spreading.
板块构造学说揭示了海底扩张和板块的水平运动现象，阐明了与板块边界相联系的岩浆活动。
The plate tectonic theory reveals the seafloor spreading and plate lateral movement, and illustrates magmatism related to plate boundaries.
他们把他们的理论叫做“海底扩张”。这个理论解释了，随着海底扩张，板块在不同的方向上被推拉。
They called their theory "sea floor spreading." the theory explains that as the sea floor spreads, the tectonic plates are pushed and pulled in different directions.
而东部次海盆深部和浅部磁异常的磁源具有同时性和相同形成机理，是通过海底扩张作用的方式形成的。
In the Eastern Sub basin the shallow and the deep magnetic sources have the same time and mechanism in formation, and are controlled by the seafloor spreading.
这两个科学家提出，大西洋海底正在从裂缝处往两边扩张。
The two scientists proposed that the floor of the Atlantic Ocean is moving away from each side of the split.
然而，在20世纪60年代，在红海发现了一种不同类型的矿床。扩张的红海海底推动着非洲大陆与阿拉伯半岛缓慢地分离。
In the 1960s, however, mineral deposits of a different kind were found in the Red sea, where the spreading seafloor impels the slow separation of Africa and Arabia.
然而，在20世纪60年代，在红海发现了一种不同类型的矿床。扩张的红海海底推动着非洲大陆与阿拉伯半岛缓慢地分离。
In the 1960s, however, mineral deposits of a different kind were found in the Red sea, where the spreading seafloor impels the slow separation of Africa and Arabia.
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