write about continental drift on the origin of earth continental and oceans seas
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In 1915, Wegener proposed his continental drift theory. He said that the continents floated atop the mantle-a heavier, denser layer of rocks deep within the earth. ... This evidence led early marine geologists to deduce that the mid-ocean ridges were formed by seafloor volcanoes
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the artical is about the development of the continental drift hypothesis before 1950 . For the contemporary theory .......
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