1. Virginia Institute of Marine Science William & Mary P.O. Box 1346 Gloucester Point VA 23062 USA
2. U.S. Geological Survey St. Petersburg Coastal and Marine Science Center 600 4th St., S, St. Petersburg FL 33701 USA
3. Department of Geology William & Mary P.O. Box 8795 Williamsburg VA 23187 USA
4. Department of Earth and Environmental Studies Montclair State University 1 Normal Ave Montclair NJ USA