《A Short History of Nearly Everything》的笔记-III: A New Age Dawns. 12 The Earth Moves
- 章节名：III: A New Age Dawns. 12 The Earth Moves
- 2015-04-04 02:20:36
P222For a start, his radical notions questioned the foundations of their discipline, seldom an effective way to generate warmth in an audience. `such a challenge would have been painful enough coming from a geologist, but Wegener had no background in geology. He was a meteorologist, for goodness' sake. A weatherman -- a German weatherman. These were not remediable deficiencies.And so geologists took every pain they could to dismiss his evidence and belittle his suggestions. To get around the problems of fossil distributions, they posited ancient 'land bridges' wherever they were needed. When an ancient horse named Hipparion was found to have lived in France and Florida at the same time, a land bridge was drawn across the Atlantic...Soon maps of prehistoric seas were almost solid with hypothesised land bridges.....P227When the crust reached the end of its journey at the boundary with continents, it plunged back into the Earth in a process known as subduction. That explained where all the sediment went. it was being returned to the bowels of the Earth. It also explained why ocean floors everywhere were so comparatively youthful. None had ever been found to be older then about 175 million years, which was a puzzle because continental rocks were often billions of years old. Now Hess could see why. Ocean rocks lasted only as long as it took them to travel to shore. It was a beautiful theory that explained a great deal. Hess elaborated his arguments in an important paper, which was almost universally ignored. Sometimes the world just isn't ready for a good idea.
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III: A New Age Dawns. 12 The Earth Moves
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