SELF-TRAIL, Jean M., U.S. Geological Survey, MS 926A, Reston, VA 20192, jstrail@usgs.gov, CHRISTOPHER, Raymond A., Clemson University (retired), 615 Laurel Lake Dr, Columbus, NC 28722, PROWELL, David C., 555 Spence Rd, Fairburn, GA 30213, HARRIS, W. Burleigh, Department of Geography and Geology, University of North Carolina–Wilmington, 601 S College Rd, Wilmington, NC 28403-3297, ALEMÁN GONZÁLEZ, Wilma B., U.S. Geological Survey, MS 926A National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, and SEEFELT, Ellen L., U.S. Geological Survey, 926A National Center, Reston, VA 20192