Dr. Ron Blakey's, paleogeographic reconstructions of the Colorado Plateau and environs illustrates how the environment and landscape has changed through time. This snapshot presents a model of how Arizona might have looked in the Paleoproterozoic, 2,500 million years ago.
Dr. Blakey is Emeritus Professor of Northern Arizona University, Flagstaff, Arizona. You can more of his work or publish the work of Blakey and Ranney at http://jan.ucc.nau.edu/rcb7/coloradoplateau.html .
