COSMOGENIC NUCLIDE CONSTRAINTS ON THE GEOMORPHIC EVOLUTION OF THE COLUMBIA PLATEAU, WASHINGTON USA
LARSEN, Isaac1, LAMB, Michael P.2, FARLEY, Kenneth A.3, LEHNIGK, Karin E.1 and DAVID, Scott1, (1)Department of Geosciences, University of Massachusetts Amherst, Amherst, MA 01003, (2)Division of Geological and Planetary Sciences, California Institute of Technology, Mail Stop 100-23, Pasadena, CA 91125, (3)Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125