Abstract
The results of physiographic and historical studies of recent channeling in previously well-aggraded valleys in the Colorado Plateau Province are here presented. Discussion is given to the unconformities and alluvial terraces in the valley fills, evidences of other epicycles of erosion. Studies were made of naturally barren areas to determine if there had been a change in the gradational processes, which would be expected if climate had changed sufficiently to cause the accelerated erosion in adjacent valleys. Conclusions are that utilization of the region by man and the consequent reduction and modification in the plant cover are major factors in starting the new epicycle of erosion.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
