McQuarrie and Chase (2000) proposed three tests for their novel model. First, that it is possible to account for the elevation of the Colorado Plateau in their model by reasonable variation of crustal thickness. Second, that mechanical parameters required of their model assume reasonable values. Third, that geological evidence supports their model.


The first and second proposed tests are relatively weak because they involve returning to examine the parameters used to build their model in the first place, and because competing models would pass these tests as well. Their third proposal provides a substantive test, but one cannot apply it...

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