* *的边界发生在板块之间的边界* *。不同的边界是两个板块正在积极* *分开。不同边界的土地上创建裂谷山谷,最终在海底山脊,井从地幔热材料,冷却并形成新的地壳。例如,东非大裂谷(发散边界),是非洲板块分开,从大陆分离索马里。最终东非大裂谷将洪水,产生新分裂之间的海洋板块与东非裂谷成为大洋中脊。[![在这里输入图像描述][1]][1]* *热点,或*板块中间*构造活动,发生远离板* *之间的界限。热点就是*板块移动固定*地幔柱* *。热点负责岛屿链,比如那些在夏威夷,形成板幻灯片在羽甚至火山在陆地上,像黄石。夏威夷群岛的谎言数千公里远离太平洋板块的边界,他们坐。 A nice feature is that the Hawaiian island chain lies in a north-westerly line that matches the direction the Pacific plate is moving. [![enter image description here][2]][2] The main thing to keep in mind is that divergent boundaries occur at the boundaries of plates. Hot-spots occur in the middle of plates, often thousands of kilometres away from the boundaries of the plates. [1]: http://i.stack.imgur.com/m35YH.png [2]: http://i.stack.imgur.com/qnBI8.png