全世界被划分为六大板块：即亚欧板块、太平洋板块、美洲板块、非洲板块、印度洋板块和南极洲板块。大陆板块指对海洋地质、海洋地貌和地球物理等资料进行分析后建立的一种新的大地构造理论。
当大陆板块停留在一个热点上时，从深层升起的物质就会形成一个广阔的圆顶。
When a continental plate come to rest over a hot spot, the material rising from deeper layer creates a broad dome.
从理论上讲，这种对流会把大陆板块带到一起，好像把它们放在传送带上一样。
Theoretically, this convection would carry the continental plates along as though they were on a conveyor belt.
海洋板块是由密度更大、更重的岩石构成的，所以它开始下沉到大陆板块之下，到地幔之中。
The oceanic plate is made of denser and heavier rock, so it begins to sink down under the continental plate and into the mantle.
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