CompuServe Messages

Kamron: You have a great imagination, and that's a good thing! A few comments. It is really true taht rivers for the most part run along faults, although it is true that there are numerous rivers that are partly or largely controlled by fault structuring. In "highly evolved" and often in superimposed terrain, faults are often eventually left out of the picture, even if they were involved early on in controlling the hydrology of a river system. The erosional pattern seen around the Colorado River in the grand canyon is not really very inegmatic, and it is not necessary to posultate a catastrophe to explain the buttes and mesa-like formations of the canyon edge or the free-standing features. This is more typical of erosion in a relatively dry terrain, and in this case, controlled at a different level by the ever-flowing Colorodo (ever-flowing not meaning forever, but just through all seasons) which drains highlands with lots of snow and various amounts of rainfall. Cheers, GTL – Greg Laden, Written 16-Aug-1994 @ 13:18:41 Using: Windows NavCIS PRO 1.25