关于地球海陆的变迁,德国气象学家魏格纳在1910年左右提出了大陆漂移学说;到了20世纪中叶,人们发现了越来越多支持大陆漂移的证据,并在魏格纳理论的基础上进行完善,提出了板块运动学说(或称板块构造学说):地球表面是由一些巨大的板块所组成,而这些板块则是由地壳和最上部的地幔 As for the changes of land and sea on earth, German meteorologist Wegner proposed the theory of continental drift around 1910; by the middle of the 20th century, more and more evidence of continental drift was discovered and based on the theory of Wagner To improve, put forward the plate kinematics (or plate tectonics theory): the Earth’s surface is composed of a number of huge plates, and these plates are from the crust and the uppermost mantle