A ~4.8 Myr geomorphic record of fluvial landscape evolution in the Fortymile River basin (Alaska and Yukon)

Adrian Bender1, Richard O Lease2, Lee B Corbett3, Paul R Bierman3, Marc Caffee4 and Tammy M Rittenour5, (1)USGS Alaska Science Center, Anchorage, AK, United States, (2)U.S. Geological Survey, Anchorage, AK, United States, (3)University of Vermont, Burlington, VT, United States, (4)Purdue University, West Lafayette, IN, United States, (5)Utah State Univ, Logan, UT, United States