MILLER, Zachary, Department of Geological Sciences, University of North Carolina, Chapel Hill, 104 South Rd, Mitchell Hall, Campus Box 3315, Chapel Hill, NC 27599-3315, zfmiller@live.unc.edu, PAVELSKY, Tamlin M., Department of Geological Sciences, University of North Carolina, 104 South Road, Mitchell Hall, CB# 3315, Mitchell Hall, Chapel Hill, NC 27599-3315, and ALLEN, George Henry, Geological Sciences, University of North Carolina, Chapel Hill, 104 South Road, CB #3315, Mitchell Hall, Chapel Hill, NC 27599