1. College of Oceanography, Oregon State University, Corvallis 97331.
2. Department of Earth and Marine Sciences, University of California, Santa Cruz 95064.
3. Department of Geological Sciences, Lehigh University, Bethlehem, PA 18015.
4. School of Oceanography, University of Washington, Seattle 98195.
5. National Oceanic and Atmospheric Administration, Marine Resources Research Division, Oregon State University, Hatfield Marine Science Center, Newport 97365.
6. National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Seattle, WA 98115.
7. Lamont-Doherty Geological Observatory, Palisades, NY 10964.
8. Chevron U.S.A., Inc., Box 599, Denver, CO 80201.