They therefore permit the reconstruction of the process of seafloorspreading, and consequently of the geography of continents and of ocean basins in the past.
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。
2
The earth's expansion may directly result in continent drift and seafloorspreading.
大陆漂移、海底扩张是地球膨胀的直接结果。
3
The plate tectonic theory reveals the seafloorspreading and plate lateral movement, and illustrates magmatism related to plate boundaries.