Young, R.A., 1985, Geomorphic evolution of the Colorado Plateau margin in west-central Arizona: A tectonic model to distinguish between the causes of rapid, symmetrical scarp retreat and scarp dissection, in Morisawa, M., and Hack, J.T., eds., Tectonic Geomorphology; proceedings of the 15th Annual Binghamton Geomorphology Symposium, September 1984: Boston, Allen and Unwin, p. 261-278.