Department of Geological Sciences, University of South Carolina, Columbia, SC 29208 United States ; now at ERDC, Cold Regions Research and Engineering Laboratory, Hanover, NH 03755 United States
Department of Geological Sciences, University of South Carolina, Columbia, SC 29208 United States
Center for Accelerator Mass Spectrometry, LLNL, Livermore, CA 94551 United States
Center for Accelerator Mass Spectrometry, LLNL, Livermore, CA 94551 United States