L. Dep, D. Elmore, M. Lipschutz, S. Vogt, Purdue University

F.M. Phillips, M. Zreda

Nuclear Instruments and Methods 92 (1994) 301-307

A depth profile ofcosmogenic neutron-capture-produced 36Cl was measured in quartz extracted from a siliceous dolomite ejecta boulder drill core at Meteor Crater, AZ. The results show a maximum in production below the top surface of the boulder and are consistent with the depth dependence of production predicted by Monte Carlo calculations. A model is presented here that uses the special features of the profile to determine both the exposure age and steady-state erosion rate of a geomorphic surface.