这板块构造学说的理论讲些什么？
指出新的观测资料为板块构造学说和大陆动力学提供了机遇和新的挑战。
In the end new development and challenges on plate tectonics and continent dynamics provided by the new observation are pointed out.
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.
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