It is barely ten since systematic deep ocean bathymetry revealed the structure of rifts, fractures and trenches associated with sea floor spreading.
系统的深海深度测量揭示了与海底扩张有关的狭谷带、断裂带和海沟的结构。
Sea Floor Spreading
英语例句库
原声例句
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The Final Clue: Sea--Floor Spreading The ultimate proof came from the oceans themselves.
最后的线索：海底扩张 最终的证据来自海洋本身。
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These patterns showed that new crust was being formed at mid--ocean ridges and slowly moving away on either side, a process known as sea--floor spreading.
这些模式表明，新的地壳正在大洋中脊处形成，并缓慢地向两侧移动，这一过程称为海底扩张。
英语百科
Seafloor spreading
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge, tensional stress causes fractures to occur in the lithosphere. Basaltic magma rises up the fractures and cools on the ocean floor to form new sea floor. Older rocks will be found farther away from the spreading zone while younger rocks will be found nearer to the spreading zone.
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