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It might be that the rate of subduction is much greater along the Asian boundary of the Pacific Plate than along the North American boundary. That is my poorly informed surmise. Anyone have any data on that? Or is there a good reason why the expansion should be close to equal in each direction?

"It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Fri Feb 10th, 2012 at 05:37:23 PM EST
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