1. Department of Geology, SUNYPotsdam, Potsdam, New York 13676
2. Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, Georgia 31411
3. Department of Earth Sciences, SUNYOswego, Oswego, New York 13126
4. Environmental Research Center, SUNYOswego, Oswego, New York 13126