11 - A. He thought continents plowed through the oceanic...

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Tuesday 9/7 A lot of evidence supporting Wegener’s theory, but many people mocked and  ridiculed him and poked holes in a couple of aspects. Main objections:     1. The continents don’t really fit Wegener had to bend them to fit But they were using the coast line, not the edge of the continents, didn’t take into  account the drop of the level of water When you use the continental shelf the continents fit together very well 2. He didn’t propose a reasonable mechanism
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Unformatted text preview: A. He thought continents plowed through the oceanic crust If this was true, there should be huge mountains in oceanic basins There are no mountains in the ocean B. He proposed tidal forces drove the continents = INCORRECT Sir Harold Jeffries showed that if the tidal forces were strong enough to move continents, then they would stop the rotation spin of the earth within a few years 17:33 17:33 17:33...
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This note was uploaded on 10/06/2010 for the course GEOL 240Lxg at USC.

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11 - A. He thought continents plowed through the oceanic...

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