1. Department of Earth Sciences; National Cheng-Kung University; 1, University Rd. Tainan 70101 Taiwan, R.O.C.
2. China Steel Corporation; 1, Chung-Kang Rd. Kaohsiung 81233 Taiwan, R.O.C.
3. Department of Marine Biotechnology and Resources; National Sun Yat-Sen University; 70, Lien-Hai Rd. Kaohsiung 80424 Taiwan, R.O.C.
4. Department of Geology; Niigata University; 8050, Ikarashi 2-no-cho Nishi-ku Niigata 950-2181 Japan
5. Formosa Ha-Tinh Steel Corporation; 201, Tung-Hwa N. Rd. Taipei 10508 Taiwan, R.O.C.